$285 Find Cheap Flights from Houston 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 Houston to London departing on 11/19. 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

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.
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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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, Mar 15 - Mon, Mar 23
British Airways Logo
10:50 pm - 12:50 pmIAH-LHR
9h 00mnonstop
British Airways Logo
10:20 am - 1:35 pmLHR-IAH
56h 15m2 stops
$511British Airways
Find Deal
Tue, Oct 14 - Tue, Oct 21
Air Canada Logo
12:05 pm - 9:35 amIAH-LHR
15h 30m2 stops
Air Canada Logo
6:50 am - 10:14 pmLHR-IAH
21h 24m2 stops
$512Air Canada
Find Deal
Wed, Oct 15 - Thu, Oct 30
United Airlines Logo
8:15 pm - 11:35 amIAH-LHR
9h 20mnonstop
United Airlines Logo
6:35 am - 5:10 pmLHR-IAH
15h 35m1 stop
$515United Airlines
Find Deal
Sat, Nov 22 - Wed, Dec 3
United Airlines Logo
6:13 pm - 6:40 amIAH-LHR
30h 27m1 stop
United Airlines Logo
12:05 pm - 4:50 pmLHR-IAH
10h 45mnonstop
$525United Airlines
Find Deal
Wed, Feb 11 - Mon, Feb 23
Lufthansa Logo
5:00 pm - 7:35 pmIAH-LHR
20h 35m2 stops
Lufthansa Logo
8:15 pm - 2:10 pmLHR-IAH
23h 55m2 stops
$561Lufthansa
Find Deal
Wed, Mar 4 - Tue, Mar 10
Lufthansa Logo
4:30 pm - 1:00 pmIAH-LHR
14h 30m2 stops
Lufthansa Logo
11:10 am - 12:12 amLHR-IAH
18h 02m2 stops
$567Lufthansa
Find Deal
Fri, Sep 26 - Fri, Oct 3
American Airlines Logo
6:44 pm - 2:25 pmHOU-LHR
13h 41m1 stop
American Airlines Logo
10:30 am - 6:10 pmLHR-HOU
13h 40m1 stop
$589American Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Iberia Logo
2:26 pm - 8:35 amHOU-LHR
13h 09m1 stop
Iberia Logo
10:05 am - 7:50 pmLHR-HOU
15h 45m1 stop
$590Iberia
Find Deal
Sat, Oct 4 - Sat, Oct 11
American Airlines Logo
11:00 am - 8:35 amIAH-LGW
15h 35m2 stops
American Airlines Logo
12:20 pm - 12:35 amLGW-IAH
18h 15m2 stops
$601American Airlines
Find Deal
Sun, Dec 7 - Mon, Jan 12
Iberia Logo
10:13 am - 10:50 amHOU-LGW
18h 37m2 stops
Iberia Logo
7:40 pm - 8:05 pmLGW-HOU
30h 25m2 stops
$767Iberia
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts and KAYAK users
BA Premium Economy offers extra legroom and priority boarding.
Arrive early at IAH for a smooth check-in experience.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Top airlines
British Airways
Cheapest • from $511 (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 22% compared to booking last minute.
Insights
Insights
Insights
Insights
Cheapest round-trip
$511
Overall average: $721
British Airways
Sun 3/15Mon 3/23
IAH - LHR • Non-stop
Cheapest non-stop
$519
Typical prices: $622-807
British Airways
Wed 10/22Thu 10/30
IAH - LHR • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Expert advice

Expert advice for your flight from Houston to London

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United Polaris offers lie-flat seats with aisle access, ideal for long-haul comfort.


United's Wi-Fi varies; check coverage map before purchasing for reliable connectivity.

British Airways

BA Premium Economy provides extra legroom and priority boarding for added comfort.


BA's Club World offers business class with enhanced comfort and service.

Iberia

Iberia Business class offers all-aisle access and comfortable bedding for restful flights.


Iberia Premium Economy features 37-inch seat pitch and USB power outlets.

Read more about Iberiaby Marisa Garcia
American Airlines

American Airlines offers Flagship Lounges with upgraded meals and shower suites.


AA's Premium Economy includes amenity kits and complimentary meals on international flights.

Airports
IAH

IAH's security lines can vary, so check wait times online. Consider using other terminals if lines exceed 20-30 minutes.

Read more about IAHby John Walton
LHR

For a quick trip to central London, the Heathrow Express takes 15 minutes to Paddington, but it's pricey. Consider the Elizabeth Line for a cheaper option.

Read more about LHRby Duncan Madden
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways and LHR

Duncan Madden

Duncan Madden

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.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa Garcia

Marisa Garcia

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

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.

Read more
John Walton

John Walton

Expert on IAH

John Walton

John Walton

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.

Read more
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.

How much is a round-trip flight from Houston to London?

What is the cheapest Houston to London flight route?

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

The cheapest return flight from Houston to London costs $522 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?

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston 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 to London is September, where tickets cost $644 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,191 and $910 respectively.

How far in advance should I book a flight from Houston 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 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 to London, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Cheapest flight$285
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 AirlinesIAH-LHRJul 2025
United really looked after me, just make sure you arrive good and early to ensure an unpressurised check in
Verified travelerFlew with British AirwaysIAH-LHRMay 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 AirlinesIAH-LHRApr 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 flights from Houston to London

  • What is the cheapest flight from Houston to London?

    In the last 3 days, the lowest price for a flight from Houston to London was $285 for a one-way ticket and $511 for a round-trip.

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

    A passport is required to fly from Houston to London.

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

    There are 2 airports in Houston (Houston Hobby and Houston George Bush Intcntl) and 3 airports in London (London Gatwick, London Heathrow, and London Luton). The cheapest flights are generally found on the Houston George Bush Airport to London Heathrow Airport flight route.

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

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

  • Which airline alliances offer flights from Houston to London?

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

  • How does KAYAK find such low prices on flights from Houston 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 to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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?

    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 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?

    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 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?

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

Direct departures

Houston 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

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 1323 reviews
6.7Food
7.5Comfort
6.9Entertainment
7.6Boarding
8.1Crew
Airline reviews

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

10.0 ExcellentSarah, Aug 2025CPH - HEL
Read more Finnair reviews

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.

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.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

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.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

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.

More choices on menu. Seemed only thing offered was Scottish, and while that’s good for the Scot’s it doesn’t help the Americans who don’t like that food. And I really hate it when, during sleep time the attendants have a very loud conversation right over you. Lastly, I paid 5000 dollars for business class, and having to pay more to choose my seat early is really an insult. Seems greedy

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

Again flight was awesome except British Airways lost both gate checked luggage’s. Still missing

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew was great and responsive. Entertainment quit working with about 4 hours remaining on the flight. My seat cushion was broken.

Not very good , the stewardess were unfriendly and they don't like to be bothered. Cos was a night flight and they need to sleep.

It was fortunate that the flight arrived in London in accordance with schedule, and the luggage was promptly transferred to the luggage carousel. However, I find it concerning that even minor issues in economy cabins are prevalent within the industry. American Airlines, in particular, appears to have the least legroom and feels more crowded due to the proximity of neighboring passengers. Additionally, the crew’s adherence to protocol is inconsistent. While they may enforce certain rules set by the FAA on a select few individuals, they often overlook numerous violations, such as failing to reset seat recline during landing.

Easy and organized getting in and out of the flight

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

I described my experience in the previous window. I didn't realize that there would be another opportunity for this flight. Please look at my response in the previous window.

Boarding was 2 1/2 late no explanation Captain said he did not know why, but he rested at home for an extra couple of hours. Food was edible, Nothing more.

I liked the comfort of the plane. It was unexpected from past experiences.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Very caring crew on board. Didn’t have dinner as I was sleeping. Was seating in the emergency row so I had comfortable leg room

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

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

Cabin class types available on flights from Houston to London

Cabin classes available on flights from Houston to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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