LHR London · rules of the United Kingdom
Can I leave London Heathrow Airport on my layover?
Choose your passport and enter your layover. You get the official entry rule for the United Kingdom and a time budget that counts the queue, the trip into London and the way back.
Choose your passport to see whether you can leave London Heathrow Airport.
United States passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control, including for a layover.
- Stay airside
- No document needed to stay airside No ETA needed if you stay airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
Canada passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
United Kingdom passport
Yes, you are at home here
- Leave the airport
- With a United Kingdom passport you can enter the United Kingdom freely.
Official sources (1), checked 2026-11-01
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re a British or Irish citizen
Australia passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
New Zealand passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
EU / EEA / Switzerland passport
Yes, with an online travel authorisation
- Leave the airport
- EU/EEA and Swiss citizens need an ETA to pass border control, except Irish citizens (no ETA) and people with UK immigration status (e.g. EU Settlement Scheme).
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption).
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re a British or Irish citizen
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
India passport
Not without a visa
- Leave the airport
- Visa national: Visitor in Transit visa (GBP 74.50, up to 48 hours) or Standard Visitor visa. Landside TWOV possible with a valid AU/CA/NZ/US visa and ticket to/from that country, or certain residence permits, and a confirmed onward flight departing before 23:59 the following day.
- Stay airside
- Airport transit visa needed, unless an exemption applies India is on the DATV list. No DATV needed if holding e.g. a valid visa for Australia, Canada, New Zealand or the USA (not necessarily travelling there), an AU/NZ/CA/US permanent residence document, a valid EEA/Swiss common-format residence permit or category D visa, an Irish biometric visa, or a UK Standard Visitor visa. Airside TWOV also requires arriving and departing by air with a confirmed onward flight the same day from the same airport.
Official sources (9), checked 2026-11-01
-
Immigration Rules Appendix Visitor: Visa national list (VN 1.1) (GOV.UK):
List of nationalities requiring entry clearance prior to travel to the UK as a Visitor
-
Visa to pass through the UK in transit: Visitor in Transit visa (GOV.UK):
A Visitor in Transit visa costs £74.50.
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Visitor in Transit visa if you'll be going through UK border control but leaving the UK within 48 hours.
-
UK Visa Requirements (Carriers Liaison Section poster, August 2026), landside TWOV (Home Office):
(v) have a confirmed onward flight that departs before 23:59hrs the following day; and
-
Transit, version 9.0 (Home Office caseworker guidance, 25 March 2026), DATV section (Home Office):
An airside transit passenger who on arrival in the UK passes through to another country or territory without entering the UK requires a Direct Airside Transit Visa, if they are one of the following:
-
Transit, version 9.0, DATV: transiting without a DATV (Home Office):
valid visa for entry to Australia, Canada, New Zealand or the USA – the passenger does not have to be on their way to the country for which the visa is held
-
Visa to pass through the UK in transit: Direct Airside Transit visa (GOV.UK):
A Direct Airside Transit visa costs £41.50.
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Direct Airside Transit visa if you'll be changing flights in the UK
-
UK Visa Requirements (August 2026), airside transit (Home Office):
Airside transit passengers are those who do not need to change airports and do not need to pass through the UK border.
China (mainland) passport
Not without a visa
- Leave the airport
- Visa national: Visitor in Transit visa or Standard Visitor visa, unless landside TWOV applies (valid AU/CA/NZ/US visa etc., onward flight before 23:59 the following day).
- Stay airside
- Airport transit visa needed, unless an exemption applies People's Republic of China is on the DATV list (ordinary passports). Same exemptions as for India (valid AU/CA/NZ/US visa, EEA/Swiss residence permit, etc.). Hong Kong SAR, Macao SAR passports are not visa nationals (not covered here).
Official sources (7), checked 2026-11-01
-
Immigration Rules Appendix Visitor: Visa national list (VN 1.1) (GOV.UK):
List of nationalities requiring entry clearance prior to travel to the UK as a Visitor
-
Visa to pass through the UK in transit: Visitor in Transit visa (GOV.UK):
A Visitor in Transit visa costs £74.50.
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Visitor in Transit visa if you'll be going through UK border control but leaving the UK within 48 hours.
-
UK Visa Requirements (Carriers Liaison Section poster, August 2026), landside TWOV (Home Office):
(v) have a confirmed onward flight that departs before 23:59hrs the following day; and
-
Transit, version 9.0 (Home Office caseworker guidance, 25 March 2026), DATV section (Home Office):
An airside transit passenger who on arrival in the UK passes through to another country or territory without entering the UK requires a Direct Airside Transit Visa, if they are one of the following:
-
Transit, version 9.0, DATV: transiting without a DATV (Home Office):
valid visa for entry to Australia, Canada, New Zealand or the USA – the passenger does not have to be on their way to the country for which the visa is held
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Direct Airside Transit visa if you'll be changing flights in the UK
Brazil passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
Mexico passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
South Africa passport
Not without a visa
- Leave the airport
- Visa national: Visitor in Transit visa or Standard Visitor visa, unless landside TWOV applies.
- Stay airside
- Airport transit visa needed, unless an exemption applies South Africa is on the DATV list (only diplomatic passports exempt by nationality). Same document exemptions as for India (valid AU/CA/NZ/US visa, etc.).
Official sources (7), checked 2026-11-01
-
Immigration Rules Appendix Visitor: Visa national list (VN 1.1) (GOV.UK):
List of nationalities requiring entry clearance prior to travel to the UK as a Visitor
-
Visa to pass through the UK in transit: Visitor in Transit visa (GOV.UK):
A Visitor in Transit visa costs £74.50.
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Visitor in Transit visa if you'll be going through UK border control but leaving the UK within 48 hours.
-
UK Visa Requirements (Carriers Liaison Section poster, August 2026), landside TWOV (Home Office):
(v) have a confirmed onward flight that departs before 23:59hrs the following day; and
-
Transit, version 9.0 (Home Office caseworker guidance, 25 March 2026), DATV section (Home Office):
An airside transit passenger who on arrival in the UK passes through to another country or territory without entering the UK requires a Direct Airside Transit Visa, if they are one of the following:
-
Transit, version 9.0, DATV: transiting without a DATV (Home Office):
valid visa for entry to Australia, Canada, New Zealand or the USA – the passenger does not have to be on their way to the country for which the visa is held
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Direct Airside Transit visa if you'll be changing flights in the UK
Philippines passport
Not without a visa
- Leave the airport
- Visa national: Visitor in Transit visa or Standard Visitor visa, unless landside TWOV applies (valid AU/CA/NZ/US visa etc., onward flight before 23:59 the following day).
- Stay airside
- No document needed to stay airside The Philippines is a visa national but NOT on the DATV list, so airside transit needs no visa, provided the passenger arrives and departs by air with a confirmed onward flight the same day from the same airport and holds the documents for the destination.
Official sources (6), checked 2026-11-01
-
Immigration Rules Appendix Visitor: Visa national list (VN 1.1) (GOV.UK):
List of nationalities requiring entry clearance prior to travel to the UK as a Visitor
-
Visa to pass through the UK in transit: Visitor in Transit visa (GOV.UK):
A Visitor in Transit visa costs £74.50.
-
Visa to pass through the UK in transit: Overview (GOV.UK):
Apply for a Visitor in Transit visa if you'll be going through UK border control but leaving the UK within 48 hours.
-
UK Visa Requirements (Carriers Liaison Section poster, August 2026), landside TWOV (Home Office):
(v) have a confirmed onward flight that departs before 23:59hrs the following day; and
-
Transit, version 9.0 (Home Office caseworker guidance, 25 March 2026), DATV section (Home Office):
An airside transit passenger who on arrival in the UK passes through to another country or territory without entering the UK requires a Direct Airside Transit Visa, if they are one of the following:
-
UK Visa Requirements (August 2026), airside transit (Home Office):
Airside transit passengers are those who do not need to change airports and do not need to pass through the UK border.
Japan passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
South Korea passport
Yes, with an online travel authorisation
- Leave the airport
- ETA required to pass border control.
- Stay airside
- No document needed to stay airside No ETA needed airside (temporary exemption); not a DATV national.
Official sources (6), checked 2026-11-01
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
An ETA costs £20.
-
Get an electronic travel authorisation (ETA) to visit the UK (GOV.UK):
You need an ETA if you're passing through border control at a UK airport before continuing your onward journey.
-
Check if you can get an electronic travel authorisation (ETA) (updated 9 April 2026) (GOV.UK):
Nationalities from the following locations (including associated territories) can apply for an ETA now.
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
permits multiple journeys to the UK for stays of up to six months at a time over two years
-
Get an ETA: When you do not need an ETA (GOV.UK):
you’re transiting through a UK airport without passing through border control (airside)
-
Electronic Travel Authorisation (ETA) factsheet - April 2026 (Home Office):
Those transiting through Heathrow and Manchester airports who do not go through UK passport control
LHR Your layover
Before you go
Going into London
-
Leave your bags in London
Radical Storage
Book a luggage locker near the station or your sight, so you can walk the city light.
-
Short tours in London
Klook
Skip-the-line tickets and short guided tours that fit a few hours.
-
Fixed-price transfer from LHR
Kiwitaxi
A driver waiting at arrivals, useful when trains are not running or you travel in a group.
-
Mobile data for the layover
Saily
An eSIM you install before you fly, for maps and your airline app in town.
Staying at LHR
-
Lounge passes at LHR
Klook
Pay-per-visit lounge access where your card or ticket does not get you in.
-
Missed your connection?
AirHelp
Check whether a delay or a missed connection entitles you to compensation.
These are affiliate links: if you book, we may earn a commission at no extra cost to you. They never change what the planner tells you.
Who can leave LHR without a visa?
Heathrow has airside transit: on a single booking you stay airside, even when changing terminals (free airside shuttle bus), and do not pass UK border control. Airside transit passengers currently do not need an ETA (a temporary exemption the Home Office keeps under review), but nationals on the Direct Airside Transit Visa (DATV) list (including India, China and South Africa) need a DATV unless they hold an exempting document such as a valid US, Canadian, Australian or New Zealand visa. Leaving the airport, self-transferring on separate tickets (bag recheck) or connecting to a domestic flight means passing UK border control: ETA nationals need an ETA (GBP 20), visa nationals need a Visitor in Transit visa (up to 48 hours) or a Standard Visitor visa, unless they qualify for landside Transit Without Visa.
| Passport | Leave the airport |
|---|---|
| United States | Yes, with an online travel authorisation · 6 months |
| Canada | Yes, with an online travel authorisation · 6 months |
| United Kingdom | Yes, you are at home here |
| Australia | Yes, with an online travel authorisation · 6 months |
| New Zealand | Yes, with an online travel authorisation · 6 months |
| EU / EEA / Switzerland | Yes, with an online travel authorisation · 6 months |
| India | Not without a visa · 48 hours (Visitor in Transit visa) |
| China (mainland) | Not without a visa · 48 hours (Visitor in Transit visa) |
| Brazil | Yes, with an online travel authorisation · 6 months |
| Mexico | Yes, with an online travel authorisation · 6 months |
| South Africa | Not without a visa · 48 hours (Visitor in Transit visa) |
| Philippines | Not without a visa · 48 hours (Visitor in Transit visa) |
| Japan | Yes, with an online travel authorisation · 6 months |
| South Korea | Yes, with an online travel authorisation · 6 months |
9 of the 14 passports we cover can leave the airport without applying for a visa first (some need an online authorisation). Other passports: check the official sources linked in the planner.
Transit rules in the United Kingdom
Airside transit (Heathrow, single booking)
Who: All nationalities; DATV nationals (e.g. IN, CN, ZA) only with a DATV or an exempting document.
- Do not change airports and do not pass the UK border; no airside transit to Ireland or the Common Travel Area.
- Arrive and depart by air with a confirmed onward flight departing the same day from the same airport (TWOV conditions for visa nationals).
- Changing terminals at Heathrow stays airside via a free transfer bus; separate tickets (self-transfer) or an international-to-domestic connection require passing immigration.
- ETA not currently required airside (temporary exemption, kept under review).
Source: Home Office, GOV.UK, Home Office, Heathrow Airport, Heathrow Airport
Landside Transit Without Visa (TWOV)
Who: Visa nationals (IN, CN, ZA, PH) holding a valid visa for Australia, Canada, New Zealand or the USA (and travelling to/from that country), certain AU/CA/NZ/US permanent residence documents, a valid EEA/Swiss common-format residence permit or category D visa, or an Irish BC/BC BIVS visa.
- Arrive and depart by air.
- Confirmed onward flight that departs before 23:59 the following day.
- Correct documents for the destination; electronic visas/residence permits of other countries are not accepted for landside transit.
- Decided by an immigration officer at the UK border.
Source: Home Office
Visitor in Transit visa
Who: Visa nationals who pass through UK border control on the way to another country.
- Leave the UK within 48 hours.
- Cost GBP 74.50.
Getting from LHR into London
We measure to London Paddington station (Elizabeth line onward to Bond Street / Tottenham Court Road). Times are the operators' own figures; ≈ marks a timetable-based estimate where no official door-to-door time is published.
| Option | Time | Fare | Runs |
|---|---|---|---|
| Heathrow Express from Heathrow Central (T2 & T3) to London Paddington source | 15 min | GBP 26.00 (Standard single, walk-up); GBP 10 advance fare if booked 30+ days ahead | every 15 min |
| Elizabeth line from Heathrow (T2 & T3) to Paddington and through central London source | 28 min | – | 6 trains/hour at T2&3 (4/hour T4, 2/hour T5) |
| London Underground Piccadilly line (all terminals) to central London source | – | – | – |
| Licensed London black taxi (metered) or WeKnow fixed-rate private hire from Arrivals desks source | – | – | 24h |
Good to know: Heathrow Express: 15 min Paddington-T2&3, +6 min to T5; T4 is not on Heathrow Express (free Elizabeth line transfer from T2&3, about 4 extra min). Elizabeth line: Paddington-Heathrow 28 min; only 2 trains/hour serve T5 and 4/hour T4. Rail travel between terminals is free (Elizabeth line / Heathrow Express inter-terminal). T4 and T5 are separate from the central T2/T3 area. Leaving the airport requires UK immigration (visa/ETA rules apply); to come back you must clear security as a departing passenger and Heathrow advises arriving 3 h before long-haul or 2 h before short-haul.
If you stay in the airport
- Transit hotel
- No airside hotel listed. source
- Left luggage
- Excess Baggage Company left luggage (GBP 10 per item 0-3 h, GBP 15 for 3-24 h); terminal locations not listed on the airport page source
- Free layover tour
- None that we know of.
Questions
Do I need a visa for a layover in London?
If you stay airside, it depends on your passport: Heathrow has airside transit: on a single booking you stay airside, even when changing terminals (free airside shuttle bus), and do not pass UK border control. Airside transit passengers currently do not need an ETA (a temporary exemption the Home Office keeps under review), but nationals on the Direct Airside Transit Visa (DATV) list (including India, China and South Africa) need a DATV unless they hold an exempting document such as a valid US, Canadian, Australian or New Zealand visa. Leaving the airport, self-transferring on separate tickets (bag recheck) or connecting to a domestic flight means passing UK border control: ETA nationals need an ETA (GBP 20), visa nationals need a Visitor in Transit visa (up to 48 hours) or a Standard Visitor visa, unless they qualify for landside Transit Without Visa. Choose your passport above for the exact rule and its official source.
How long does it take to get from LHR to London?
The fastest public option, Heathrow Express from Heathrow Central (T2 & T3) to London Paddington, takes about 15 minutes to London Paddington station (Elizabeth line onward to Bond Street / Tottenham Court Road) (official figure). The planner adds 20% for waiting and delays.
How long a layover do I need to leave London Heathrow Airport?
With our cautious defaults (45 minutes to get out, 120 minutes back before departure, the transfer both ways plus 20%), you need about 5 hours for 90 minutes in the city. Below that, stay in the airport.
Rules checked against official sources on 2026-11-01; airport facts from London Heathrow Airport. Found something out of date? Tell us.