IAH - LON

£270 Find Cheap Flights from Houston George Bush Airport to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to London departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to London, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£487
Multiple Airlines
Wed 1/4Wed 2/9
IAH - LGW • 1 stop
Cheapest direct flights
£529
Typical prices: £463-£587
Finnair
Mon 10/8Thu 20/8
IAH - LHR • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Finnair's Economy Comfort offers extra legroom.
Heathrow's signage is good, but expect crowds.
Expert advice
Expert advice
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Expert advice
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Top airlines
Cheapest • from £512 (return)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Direct flights
You can fly direct with British Airways and United Airlines. Average duration is 9h 16m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top routes
Cheapest
Most popular
Insights
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Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
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Top stopover airports
Cheapest • Avg £556 (return)
Shortest trip • 10h 49m (one-way)
Insights
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Insights
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When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 37% compared to booking last minute.
Insights
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When to travel
Cheapest • 19% price drop
Most popular
Good to know
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from George Bush Intcntl to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from George Bush Intcntl to London

Wed, 1 Apr - Wed, 2 Sep
Multiple Airlines Logo
16:20 - 10:00
IAH
-
LGW
35h 40m
1 stop
Multiple Airlines Logo
14:00 - 12:41
LGW
-
IAH
28h 41m
1 stop
£487Multiple Airlines
Fri, 27 Mar - Wed, 15 Apr
Multiple Airlines Logo
07:59 - 10:00
IAH
-
LGW
21h 01m
1 stop
Multiple Airlines Logo
14:00 - 09:43
LGW
-
IAH
25h 43m
1 stop
£490Multiple Airlines
Wed, 25 Mar - Mon, 13 Apr
Multiple Airlines Logo
16:11 - 10:00
IAH
-
LGW
12h 49m
1 stop
Multiple Airlines Logo
14:00 - 08:38
LGW
-
IAH
24h 38m
1 stop
£491Multiple Airlines
Fri, 1 May - Mon, 4 May
Air Canada Logo
10:00 - 21:00
IAH
-
LHR
53h 00m
2 stops
Air Canada Logo
17:50 - 19:59
LHR
-
IAH
32h 09m
2 stops
£512Air Canada
Tue, 18 Aug - Thu, 20 Aug
United Airlines Logo
15:35 - 18:40
IAH
-
LHR
21h 05m
1 stop
United Airlines Logo
07:25 - 16:30
LHR
-
IAH
15h 05m
1 stop
£523United Airlines
Wed, 29 Apr - Tue, 19 May
Finnair Logo
21:05 - 12:25
IAH
-
LHR
9h 20mdirect
Finnair Logo
09:10 - 13:25
LHR
-
IAH
10h 15mdirect
£537Finnair
Sun, 29 Mar - Tue, 14 Apr
Air Canada Logo
11:50 - 06:30
IAH
-
LHR
12h 40m
1 stop
Air Canada Logo
08:45 - 20:29
LHR
-
IAH
17h 44m
2 stops
£544Air Canada
Mon, 4 May - Tue, 19 May
Finnair Logo
21:05 - 12:25
IAH
-
LHR
9h 20mdirect
Finnair Logo
09:10 - 13:25
LHR
-
IAH
10h 15mdirect
£550Finnair
Tue, 18 Aug - Thu, 20 Aug
Lufthansa Logo
15:35 - 17:55
IAH
-
LCY
20h 20m
1 stop
Lufthansa Logo
09:15 - 00:22
LCY
-
IAH
21h 07m
2 stops
£568Lufthansa
Wed, 26 Aug - Wed, 9 Sep
Lufthansa Logo
15:35 - 17:55
IAH
-
LCY
20h 20m
1 stop
Lufthansa Logo
09:15 - 00:22
LCY
-
IAH
21h 07m
2 stops
£587Lufthansa
Booking Insights

KAYAK’s insights & trends for George Bush Intcntl to London flights

Get data-powered insights and trends into flights from George Bush Intcntl to London to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Houston George Bush Intcntl Airport to London departing in April.

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

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Houston George Bush Intcntl Airport to London costs £308 on the route between Houston George Bush Intcntl Airport (IAH) and London Heathrow Airport (LHR). It is also the most popular route.

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

The average price of all round-trip flights from Houston George Bush Intcntl Airport to London clicked on KAYAK for each day over the last 12 months.

When flying from Houston George Bush Airport to London, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to Houston George Bush Airport, you’ll find the best rates on Thursdays and the most expensive ones on Saturdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to London, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to London is September, where tickets cost £487 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £901 and £730 respectively.

Can I save money by flying with a stopover from Houston George Bush Intcntl Airport to London?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £541 on average.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to London?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to London, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to London, you should book around 3 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from George Bush Intcntl to London

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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.

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.

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.

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.

Good to know - Cheap tickets from Houston George Bush Airport to London

Low seasonJanuary
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (16% more expensive on average)

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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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
IAH
-
LHR
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
IAH
-
LHR
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
IAH
-
LHR
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.

FAQs for booking Houston George Bush Airport to London flights

  • 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.

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

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to London was £270 for a one-way ticket and £487 for a return.

  • Which airports will I be using when flying from Houston George Bush Airport to London?

    On your way to London, you’ll fly out from Houston George Bush Intcntl. You’ll be landing in one of London’s 3 airports: London Heathrow, London Luton, or London Stansted.

  • Which airlines offer Wi-Fi service onboard planes from Houston George Bush Airport to London?

    American Airlines, Lufthansa, and United Airlines offer inflight Wi-Fi service on the Houston George Bush Airport to London flight route.

  • Which aircraft models fly most regularly from Houston George Bush Airport to London?

    The Boeing 777 is the aircraft model that flies most regularly on the Houston George Bush Airport to London flight route.

  • Which airline alliances offer flights from Houston George Bush Airport to London?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Houston George Bush Airport and London, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Houston George Bush Airport to London?

    There are direct flights from Houston George Bush Airport to London on a daily basis.

  • Which is the best airline for flights from Houston to London, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Houston to London are United Airlines and Lufthansa. With an average price for the route of £696 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of £408 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Houston George Bush Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Houston George Bush Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to London

  • Looking for a cheap flight from London to Houston George Bush Airport? 25% of our users found flights on this route for £313 or less one-way and £524 or less round-trip.
  • 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?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston George Bush Intcntl 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

Reviews of the top 3 airlines flying from George Bush Intcntl to London

 
See real verified KAYAK customer reviews for airlines flying from Houston to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9428 reviews
6.6Food
7.3Comfort
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

2.0 MediocreAnonymous, Feb 2026
IAH - GUA
Read more United Airlines reviews

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

I like flying first class, and United has a nice one

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Unbelievably poor service from flight attendants. They didn’t even do water service on a four hour flight. Just disrespectful.

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

A bit more space? Not practical, I know. I felt squished in but part of that could have been the man sitting next to me.

I liked the crews attentiveness, all food and drink items were tasty, and came out in a timely manner. The entertainment systems were not as responsive and my seat had issues with the auxiliary for the headphones. Seats were OK, and the headrest for my seat could go back only so far. Bathrooms were tight fit.

The United Airlines crew that operated this flight was subpar. They didn’t

It was my first experience in business class. It was everything I expected and more. Service was impeccable, food was delicious and I felt rested once I arrived to London

Actual flight was smooth but we were delayed 70 minutes. Were promised to make it up to us but were given no refreshments

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Everything you need to know for your flight from George Bush Intcntl to London

Information on your arrival and departure airports