IAH - LON

£243 Find Cheap Flights from Houston George Bush Airport to London – Compare and Save

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Everything you should know

Cheapest return flight
£582
Typical prices: £523-£894
United Airlines
Tue 2/10Sun 7/10
IAH - LHR • Direct
Cheapest direct flights
£582
Typical prices: £536-£915
British Airways
Tue 2/10Sun 7/10
IAH - LHR • Direct
Advice from real travellers
For United, arrive early at Houston George Bush for a smoother check-in.
At Heathrow, signage is mixed; allow extra time for arrival and finding exits.
Expert advice
+1
Expert advice
+1
Direct flights
You can fly direct with United Airlines and British Airways. Average duration is 9h 13m
Direct flights
+1
Direct flights
+1
Top routes
Cheapest • 22% average savings
Most popular
Insights
Insights
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 19% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg £421 (return)
Shortest trip • 12h 48m (one-way)
Insights
Insights
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We hope you enjoy your trip to London!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from George Bush Intcntl to London (IAH-LON)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from George Bush Intcntl to London

Fri, 2 Oct - Wed, 7 Oct
United Airlines Logo
16:35 - 07:55IAH  Houston George Bush Intcntl-LHR London Heathrow
9h 20mdirect
United Airlines Logo
06:55 - 16:40LHR  London Heathrow-IAH Houston George Bush Intcntl
15h 45m1 stop Munich Franz Josef Strauss
£582United Airlines
Fri, 2 Oct - Wed, 7 Oct
British Airways Logo
21:10 - 12:25IAH  Houston George Bush Intcntl-LHR London Heathrow
9h 15mdirect
British Airways Logo
09:10 - 13:25LHR  London Heathrow-IAH Houston George Bush Intcntl
10h 15mdirect
£582British Airways
Fri, 2 Oct - Wed, 7 Oct
Air Canada Logo
10:00 - 10:00IAH  Houston George Bush Intcntl-LHR London Heathrow
18h 00m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
08:40 - 19:52LHR  London Heathrow-IAH Houston George Bush Intcntl
17h 12m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
£583Air Canada
Fri, 2 Oct - Wed, 7 Oct
United Airlines Logo
12:02 - 05:55IAH  Houston George Bush Intcntl-LHR London Heathrow
11h 53m1 stop Newark
United Airlines Logo
07:25 - 16:40LHR  London Heathrow-IAH Houston George Bush Intcntl
15h 15m1 stop Munich Franz Josef Strauss
£585United Airlines
Fri, 2 Oct - Wed, 7 Oct
Air Canada Logo
10:00 - 08:35IAH  Houston George Bush Intcntl-LHR London Heathrow
16h 35m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
08:40 - 19:52LHR  London Heathrow-IAH Houston George Bush Intcntl
17h 12m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
£589Air Canada
Tue, 24 Nov - Mon, 30 Nov
Virgin Atlantic Logo
12:30 - 06:25IAH  Houston George Bush Intcntl-LHR London Heathrow
11h 55m1 stop Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
20:25 - 13:05LHR  London Heathrow-IAH Houston George Bush Intcntl
22h 40m1 stop Amsterdam Schiphol
£597Virgin Atlantic
Mon, 7 Dec - Mon, 21 Dec
British Airways Logo
21:40 - 12:40IAH  Houston George Bush Intcntl-LHR London Heathrow
9h 00mdirect
British Airways Logo
15:25 - 19:55LHR  London Heathrow-IAH Houston George Bush Intcntl
10h 30mdirect
£599British Airways
Mon, 7 Dec - Mon, 21 Dec
British Airways Logo
12:46 - 07:50IAH  Houston George Bush Intcntl-LHR London Heathrow
13h 04m1 stop Philadelphia
British Airways Logo
09:35 - 14:05LHR  London Heathrow-IAH Houston George Bush Intcntl
10h 30mdirect
£603British Airways
Mon, 7 Dec - Mon, 21 Dec
Virgin Atlantic Logo
12:30 - 07:50IAH  Houston George Bush Intcntl-LHR London Heathrow
13h 20m1 stop Atlanta Hartsfield-Jackson
Virgin Atlantic Logo
13:20 - 23:59LHR  London Heathrow-IAH Houston George Bush Intcntl
16h 39m2 stops Washington, D.C. Dulles Intl Atlanta Hartsfield-Jackson
£606Virgin Atlantic
Thu, 26 Nov - Tue, 1 Dec
United Airlines Logo
16:25 - 07:40IAH  Houston George Bush Intcntl-LHR London Heathrow
9h 15mdirect
United Airlines Logo
12:05 - 16:40LHR  London Heathrow-IAH Houston George Bush Intcntl
10h 35mdirect
£636United Airlines
Booking Insights

Price, demand, and travel trends for Houston George Bush Intcntl Airport to London flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Houston George Bush Intcntl Airport to London with more confidence.

How much is a return flight from Houston George Bush Intcntl Airport to London?

Return flights from Houston George Bush Intcntl Airport to London start at £582. Prices are typical for this route right now, with typical return fares ranging from £523 to £894. The lowest price found in the past 5 days was £582 on United Airlines.

What is the cheapest Houston George Bush Intcntl Airport to London flight route?

Houston George Bush Intcntl Airport (IAH) to London Gatwick Airport (LGW) is the cheapest Houston George Bush Intcntl Airport to London route, averaging £624 return. Other Houston George Bush Intcntl Airport to London routes average £843, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Houston George Bush Intcntl Airport to London?

Wednesday is the cheapest day of the week to fly from Houston George Bush Intcntl Airport to London and is 7% cheaper than the average day. Monday is the most expensive day with flight prices 8% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to London?

  • February is the cheapest month to fly from Houston George Bush Intcntl Airport to London at £512 return.
  • June (£1,010) and July (£883) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 97% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Houston George Bush Intcntl Airport to London the cheapest?

Flights from Houston George Bush Intcntl Airport to London are cheapest 4 weeks before departure. Booking in this window typically costs about 19% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from George Bush Intcntl to London

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Tara Craig

Tara Craig

Expert on Austrian Airlines

Tara Craig has been a journalist for 17 years, focusing on aviation for more than a decade. She has covered everything from how airports accommodate disabled passengers to the emergence of electric air taxis. Tara is constantly travelling and finds it hard to stop noticing things – good and bad – about the air travel experience.

Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Jessica Macdonald

Jessica Macdonald

Expert on Lufthansa

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has travelled to more than 50 countries across six continents.

Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Key details for Houston George Bush Intcntl Airport to London flights

Low season

February

Cheapest flight

£243
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly (29% more expensive on average)
Flights from Houston George Bush Intcntl Airport to London Heathrow Airport

When to book flights from George Bush Intcntl to London

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights from George Bush Intcntl to London: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from George Bush Intcntl to London 
AndrewFlew with United Airlines-Jul 2025
United really looked after me, just make sure you arrive good and early to ensure an unpressurised check in
Verified travelerFlew with British Airways-May 2025
Heathrow has good signage. There are lots of people going to the same terminal waiting for the train. Be patient and when you have connecting flights choose a 2-hour layover.
JamesFlew with American Airlines-Apr 2025
Try to avoid Heathrow! Not the most convenient to get into London unless you have a driver. Also, Heathrow needs better signs on where to go to exit and better wifi for foreign travelers.

Your Houston George Bush Intcntl Airport to London flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which London airport should I fly into?

    Gatwick is the overall most convenient option. It has better accessibility, it's easy to navigate, and it features budget and regular airlines. Still, Heathrow stands as an excellent option if you want to catch an international flight from there. If you’re traveling for business, London City is the closest to Downtown London and has a business-oriented vibe, while the rest of the airports are better for budget airlines.

  • What is the quickest travel mode from London Heathrow (LHR) to Central London?

    The Heathrow Express train is the quickest mode of transport from LHR to the London city center. You’ll board from Terminal 2, 3, or 5 and take about 15min to the city. You can also use the underground train accessible from Terminals 2 and 3 between the pedestrian subway and Terminals 4 and 5 through the lift or escalators.

  • Does George Bush International Airport offer any services for families?

    If you’re traveling with kids, George Bush International Airport offers several nursing rooms and nurseries in different terminals. With older kids, you can rise the Skyway inter-terminal train as you wait for your flight. Alternatively, you can go check out the airport’s art collection that includes sculptures to photographs placed throughout the airport's terminals, including Terminal A, B, C, D, and E.

  • What services are available for passengers with limited mobility at London Gatwick (LGW)?

    LGW has several services for people with reduced mobility, including wider access paths, ramps, wheelchairs, buggies, assistance lanes, and special toilet facilities.

  • Which airlines offer extra legroom and free seat selection on Houston George Bush Intcntl Airport to London flights?

    Among airlines operating Houston George Bush Intcntl Airport to London flights:

    • United Airlines: offers extra legroom; offers free seat selection
    • British Airways: offers extra legroom; offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection
    • Iberia: offers free seat selection
    • Finnair: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines are available on the route from Houston George Bush Intcntl Airport to London?

    2 airlines operate flights between Houston George Bush Intcntl Airport and London. The airlines offering direct flights on this route include:

    • United Airlines
    • British Airways

  • Which airports can I use when flying from Houston George Bush Intcntl Airport to London?

    Flights from Houston George Bush Intcntl Airport to London usually depart from Houston George Bush Intcntl (IAH) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

  • Which airlines include bags at no extra cost on Houston George Bush Intcntl Airport to London flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • United Airlines: a cabin bag and a checked bag in Economy class
    • British Airways: a cabin bag and a checked bag in Economy class
    • American Airlines: a cabin bag and a checked bag in Economy class

    Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

  • Which cabin classes can I book on flights from Houston George Bush Intcntl Airport to London?

    Three cabin classes are available on flights from Houston George Bush Intcntl Airport to London:

    • Economy class
    • Premium Economy Class
    • Business Class

  • How much can I save by having a stopover when flying from Houston George Bush Intcntl Airport to London?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average £421 return via Atlanta Hartsfield-Jackson (ATL), compared with £701 for direct.

  • What is the standard checked bag allowance on flights from Houston George Bush Intcntl Airport to London?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £27–£74 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which airports do connecting flights from Houston George Bush Intcntl Airport to London pass through?

    One-stop flights from Houston George Bush Intcntl Airport to London most commonly connect through:

    • Istanbul (IST) – 27% of one-stop connections
    • Orlando (MCO) – 13% of one-stop connections
    • Toronto Pearson Intl (YYZ) – 10% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 9% of one-stop connections

    Istanbul (IST) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Houston George Bush Intcntl Airport to London?

    Yes. Being flexible with your travel dates can save you up to 14% on the Houston George Bush Intcntl Airport to London route. Wednesday is the cheapest departure day at £639 return on average, while Monday is the most expensive at £738, a difference of £99. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed on the route from Houston George Bush Intcntl Airport to London?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Houston George Bush Intcntl Airport to London route, 20% of flights were delayed in the past 3 months, with delays averaging 2 hours 29 minutes.

  • How are flight departures from Houston George Bush Intcntl Airport to London spread across the day?

    Afternoon is the busiest departure period on Houston George Bush Intcntl Airport to London flights, with 50% leaving in that window. Evening departures account for 25%, Night flights for 25%, and Morning flights for 0%.

  • What popular places can I visit in London?

    Some of the most popular sights in London are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London on KAYAK.

  • What are the earliest and latest flights from Houston George Bush Intcntl Airport to London?

    These are the earliest and latest flight times available from Houston George Bush Intcntl Airport to London:

    • Earliest: departs at 15:30 and lands at 00:43
    • Latest: departs at 22:40 and lands at 07:53.

    The flight takes about 9h 13m.

  • How expensive are last-minute Houston George Bush Intcntl Airport to London flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 12% above the route average of £682. Book 4 weeks before departure for the lowest fares.

  • How long is a flight from Houston George Bush Intcntl Airport to London?

    A direct flight from Houston George Bush Intcntl Airport to London takes 9h 13m, covering 4,833 miles.

  • Do I need a passport to fly from Houston George Bush Intcntl Airport to London?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Houston George Bush Intcntl Airport to London looking right now?

    One-way fares from Houston George Bush Intcntl Airport to London are currently lower than usual. Average one-way flight prices are about £256, which is 34% below the typical average for this route.

  • How do delay rates compare for morning and evening flights from Houston George Bush Intcntl Airport to London?

    Night flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • How much time can I save by choosing a different stopover airport from Houston George Bush Intcntl Airport to London?

    Flying via Dallas/Fort Worth (DFW) gives the shortest average 1-stop total travel time of 12h 48m, compared to 12h 59m via Atlanta Hartsfield-Jackson (ATL) and 13h 18m via Amsterdam Schiphol (AMS).

  • What is the time difference between Houston George Bush Intcntl Airport and London?

    London is 6 hours ahead of Houston George Bush Intcntl Airport (British Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car hire options are available in London?

    Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around £5:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around £6:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) – daily rates from around £8:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Luton Airport (LTN) – daily rates from around £8:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) – daily rates from around £7:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

  • How much should I expect to pay for a Houston George Bush Intcntl Airport to London flight?

    Return flights from Houston George Bush Intcntl Airport to London range from £523 to £894, with an average of £682 over the past 12 months. Anything below £523 counts as a good deal.

  • Which airlines offer Wi-Fi on Houston George Bush Intcntl Airport to London flights?

    American Airlines is the only airline on the Houston George Bush Intcntl Airport to London route offering in-flight Wi-Fi. Pricing depends on fare class.

Your guide to booking Houston George Bush Intcntl Airport to London flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Monday. On this route, Wednesday flights average £639 – about £99 less than Monday (13% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 4 weeks before you fly. On this route, that window historically saves about 19% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston George Bush Intcntl Airport to London trip for February. Fares historically average £512 return in that month – typically £498 less than the most expensive month, which is June (based on the last 12 months).
  • If arriving on time is high on your priority list, British Airways is the strongest pick on this route. 85% of British Airways flights from Houston George Bush Intcntl Airport to London arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 80%. When flights on this route do arrive late, the average delay is 2 hours29 minutes, so choosing an airline with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Atlanta Hartsfield-Jackson Airport (ATL) can be cheaper than flying direct. The cheapest stopover option averages £421 return on this route – about £280 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    · Aloft London Excel
    · Good Hotel London
    · Crowne Plaza London Docklands By IHG

    Near London Heathrow Airport

    · Hilton London Heathrow Airport

    Near London Gatwick Airport

    · Premier Inn London Gatwick Airport
  • If you're arranging a flight from Houston, Texas, to London, book your flight from the George Bush International Airport (IAH). If you drive yourself there, you can park your car at all five terminals on Terminal Road for about $15 per day. You'll also find cheaper rates at EcoPark parking lots outside the airport on John F. Kennedy Blvd.
  • London has five major airports you can fly to, London Heathrow (LHR), London City (LCY), London Gatwick (LGW), London Luton (LTN), and London Stansted (STN). LHR is about 16 miles from Downtown London, and LCY is about 8 miles away, the closest airport to the city. LGW is about 38 miles, STN about 30 miles, and LTN about 34 miles. If you're looking for the shortest trip, fly into London Heathrow or London City Airport. Both airports have more flight options that make only one layover.
  • If you’re looking to fly from Houston to London non-stop, you’ll find multiple flights by Lufthansa and Delta at George Bush International Airport (IAH). Other airlines that offer flights to London from IAH include United Airlines, KLM, Lufthansa, JetBlue, and Alaska Airlines.
  • George Bush International Airport is a hub for United Airlines and a focus city for Spirit Airlines. London Heathrow is a hub for British Airways and a base for Virgin Atlantic. London Stansted a hub for RyanAir, and London Gatwick a hub for British Airways.
  • If you arrive late in London, Heathrow has several on-site hotels, including Hilton, Aerotel, Yotel, and Sofitel. Gatwick also has several hotels connected to the terminals, namely, Hampton by Hilton, Hilton, Sofitel, Premier Inn North, and Courtyard by Marriott.
  • If you’re looking to relax and get a drink as you wait for your flight at George Bush International Airport, American Airlines, KLM, Air France, and United Airlines all have lounges at the airport. There’s also a Centurion Lounge where you'll find extra complimentary services like a premium bar, snacks, and a family room.

Prefer to fly direct from Houston George Bush Airport to London?

 
Find which airlines fly direct from Houston George Bush Intcntl Airport to London, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl to London

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

Direct returns

London to Houston George Bush Intcntl

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

More options for your flight from George Bush Intcntl to London

Complete your trip to London with a hotel stay or car hire