LHR

$272 Find Cheap Flights from Houston to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Houston to London departing on 2/10. 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 Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to London.
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Everything you should know

Cheapest round-trip
$621
Typical prices: $648-$821
Multiple Airlines
Sun 2/15Tue 3/3
IAH - LHR • 1 stop
Cheapest non-stop
$641
Typical prices: $653-$901
British Airways
Sun 2/15Thu 3/26
IAH - LHR • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
Upgrade to Main Cabin Extra on American for drinks.
Arrive early for a smooth check-in with United.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top airlines
United Airlines
Cheapest • from $623 (round-trip)
Finnair
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAH
-
LHR
Cheapest
IAH
-
LHR
Most popular
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
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Flight Deals

Cheap Flights from Houston to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Houston 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 round-trip flight deals from Houston to London

Sun, Feb 15 - Tue, Mar 3
Multiple Airlines Logo
4:30 pm - 8:50 pm
IAH
-
LHR
22h 20m
1 stop
Multiple Airlines Logo
6:50 am - 9:39 pm
LHR
-
IAH
20h 49m
2 stops
$621Multiple Airlines
Mon, Feb 16 - Thu, Feb 26
United Airlines Logo
5:25 pm - 11:50 am
IAH
-
LHR
36h 25m
1 stop
United Airlines Logo
6:35 am - 4:30 pm
LHR
-
IAH
15h 55m
1 stop
$623United Airlines
Sun, Feb 15 - Fri, Feb 27
Air Canada Logo
5:25 pm - 11:50 am
IAH
-
LHR
36h 25m
1 stop
Air Canada Logo
6:50 am - 9:39 pm
LHR
-
IAH
20h 49m
2 stops
$626Air Canada
Tue, Mar 3 - Mon, Mar 16
Delta Logo
12:49 pm - 8:05 am
IAH
-
LHR
13h 16m
1 stop
Delta Logo
11:45 am - 2:30 pm
LHR
-
IAH
31h 45m
1 stop
$628Delta
Wed, Feb 11 - Tue, Mar 17
Air Canada Logo
12:10 pm - 7:10 am
IAH
-
LHR
13h 00m
1 stop
Air Canada Logo
6:50 am - 9:39 pm
LHR
-
IAH
19h 49m
2 stops
$629Air Canada
Sun, Feb 8 - Tue, Feb 24
Air Canada Logo
5:25 pm - 11:50 am
IAH
-
LHR
36h 25m
1 stop
Air Canada Logo
2:30 pm - 4:24 pm
LHR
-
IAH
31h 54m
1 stop
$630Air Canada
Sun, Feb 8 - Tue, Feb 24
Multiple Airlines Logo
4:30 pm - 4:50 pm
IAH
-
LHR
18h 20m
1 stop
Multiple Airlines Logo
6:50 am - 9:39 pm
LHR
-
IAH
20h 49m
2 stops
$631Multiple Airlines
Tue, Mar 10 - Mon, Mar 16
British Airways Logo
12:18 pm - 12:15 pm
HOU
-
LHR
18h 57m
1 stop
British Airways Logo
7:15 pm - 7:50 pm
LHR
-
HOU
29h 35m
2 stops
$634British Airways
Tue, Feb 24 - Tue, Mar 10
British Airways Logo
4:21 pm - 12:15 pm
HOU
-
LHR
13h 54m
1 stop
British Airways Logo
6:05 am - 7:50 pm
LHR
-
HOU
18h 45m
2 stops
$636British Airways
Sun, Feb 8 - Tue, Feb 24
Delta Logo
5:45 am - 7:50 am
HOU
-
LHR
20h 05m
1 stop
Delta Logo
8:40 am - 10:28 pm
LHR
-
HOU
19h 48m
2 stops
$638Delta
Booking Insights

KAYAK's insights & trends for Houston to London flights

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

What is the cheapest Houston to London Heathrow Airport flight route?

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

The cheapest return flight from Houston to London Heathrow Airport costs $532 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 to London Heathrow Airport?

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

For Houston to London Heathrow Airport, Wednesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from London Heathrow Airport back to Houston, the best deals are generally found on Sunday, with Friday being the most expensive.

What is the cheapest month to fly from Houston to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston to London Heathrow Airport, 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 to London Heathrow Airport is February, where tickets cost $644 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,171 and $1,003 respectively.

How far in advance should I book a flight from Houston to London Heathrow Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston to London Heathrow Airport, 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 to London Heathrow Airport, you should book around 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from Houston 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
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 on the sea, likely en route to Antarctica or the Arctic.

Duncan Madden

Duncan Madden

Expert on British Airways and LHR

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.

Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Good to know

Cheapest flight$272
Flight from Houston George Bush Airport to London Heathrow Airport

When to book flights from Houston to London

Are your dates flexible? Find out the best times to travel from Houston to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Houston to London: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Houston 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 to London Heathrow Airport flights

  • What is the cheapest flight from Houston to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Houston to London Heathrow Airport was $272 for a one-way ticket and $621 for a round-trip.

  • Do I need a passport to fly between Houston and London Heathrow Airport?

    A passport is required to fly from Houston to London Heathrow Airport.

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

    Houston is served by 2 major airports and there is only 1 main airport in London Heathrow Airport. You will leave Houston from one of these airports: Houston Hobby or Houston George Bush Intcntl. You will be arriving at London Heathrow.

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

    We unfortunately don’t have that data for this specific route.

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

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

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

    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 to London Heathrow Airport.

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

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

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

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

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

    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 Heathrow Airport from Houston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Houston to London Heathrow Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston to London Heathrow.
Find which airlines fly direct from Houston to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Houston to London Heathrow

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 Heathrow to Houston

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 5 airlines serving from Houston 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 Houston 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.
7.6
FinnairOverall score based on 1356 reviews
7.5Comfort
6.9Entertainment
7.7Boarding
8.2Crew
6.7Food
Airline reviews

Very good seat, very comfortable, good food, and good service.

10.0 ExcellentSunny, Jan 2026
HEL - DEL
Read more Finnair reviews

Very good seat, very comfortable, good food, and good service.

It was a good flight, very comfortable seats for sleeping in business class. Probably the most comfortable business class seat I've ever had (20+ times in business class on various airlines). Service was good, but the only downside is my screen didn't work and it had to be reset multiple times to get it to shut off. I had to block my eyes because the screen was white almost the entire flight and I wore an eye mask when I slept. But when eating and reading in my seat, my eyes hurt because the only way to turn the screen off was reset it and the screen would only be off for a few minutes at a time.

Everything was wonderful! AirBus seats are more comfortable to sleep in as compared to the Boeing planes.

All reviews good because...flight from BWI to London ,economy seats was miserable. I usually book 1,step up from economy but this would have added 1500 bucks 1 way. Bit the bullet and upgraded for retun flight, otherwise all ratings would have been rock bottom.

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

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.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

My flight to London from Philadelphia was cancelled due to weather.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

The trip was smooth but the crew were very abrupt, snatching things before finished and being quite snappy when asked questions.

My wife and I love to travel, so we fly a lot. We've already logged 381,075 miles and with practically every major airline. But this flight was very disappointing. It started off well, with no delays and a new plane. But when lunchtime approached, all that good impression was ruined. Instead of white tablecloths, we were offered small, dark placemats, which, as it turned out, were perfectly adequate for the food. All the food offered—and my wife and I only took fish, and the meat—was not just bad, it was downright disgusting and not heated enough. The same applies to the appetizers. This was the first time in many years of traveling that we've been offered such disgusting food.

Lost luggage stuck no clothes and no word after 2 days leaving on cruise no stuff or clothes

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

The flight was canceled 3 hours after original take off time

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

Flight was full, and would have preferred an aisle seat, but due to getting a late ticket ,the seat I had was adequate. The flight crew were very help full and hard working. Food and drink were excellent for the 11hr flight. Overall I was pleased with flight, and would recommend British Airways again.

The boarding procedure got confusing because they wanted to weigh everyone’s carry-on. Apparently mine was 3 1/2 kg over their limit. I didn’t know they had a limit. And at the check-in desk, nothing was said about this. They wanted me to check the carry-on at no charge and that would have been fine except then they told me at my connection in London I would have to go outside to baggage claim retrieve my bag, and then recheck it. In other words, they could not check it to my final destination, only to London. I told him this was unacceptable so after a few minutes of discussion, they came back and said that my bag would be OK to carry on the plane. It seems that if you have a connection then the weight is not as important. Then when I actually went to board the boarding agent said I needed a tag indicating that my bag had been weighed, even though she had just five minutes ago talked to the same person who cleared me. Lots of confusion seems like a very bad process. They need to improve this.

My flight being automatically moved messed up my travel plans, and I had to quickly find an alternative mode of transportation. I couldn’t get a refund from any of the companies involved. Kayak, Ibiza, or Vueling. I am still unsure of how to settle my concern.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

The staff was very nice and helpful. Some of the best crew I have met.

Suddenly, I don't find my flight back on the app Help Ticket 0757345716866 Hoeflich Flight back Sunday ib5333 Ib2629 Ib4268

Was all good.l including a sofdrink. AA improved significantly. There was no entertainment.

I've taken British Airways before and it has been great. On this trip to Spain and Portugal we had two BA flights. On both flights we were taken by bus from the terminal out to the plane on the tarmac. There were many older folks on these flights, and to ask people in their 70s to lug their carry-on and personal items up the long mobile staircase to the plane entrance, is very disturbing. I won't be taking British Airways in the future. Many people on these flights were very unhappy.

The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0

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.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

The cramped seats are cruel and unusual punishment and may violate the Geneva code.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

The flight was excellent in World Travellor plus. Well worth the extra money. Boarding at Phoenix was the usual poorly organized event. Very stressful.

Although business class, the seating was really cramped. The food was so so.

Everything you need to know for your flight from Houston to London

Information on your arrival and departure airports