$184 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 10/19. 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

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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

Mon, Sep 8 - Sun, Sep 14
 Logo
5:48 pm - 10:00 amIAH-LGW
34h 12m1 stop
 Logo
2:00 pm - 8:24 amLGW-IAH
24h 24m1 stop
Sat, Aug 16 - Sat, Aug 30
 Logo
6:59 pm - 6:55 amIAH-LGW
29h 56m1 stop
 Logo
10:00 am - 9:50 pmLGW-IAH
17h 50m1 stop
Sun, Aug 17 - Thu, Aug 28
American Airlines Logo
10:14 am - 8:35 amHOU-LGW
16h 21m2 stops
American Airlines Logo
10:40 am - 10:12 pmLGW-HOU
17h 32m2 stops
$499American Airlines
Find Deal
Sun, Aug 17 - Thu, Aug 28
American Airlines Logo
9:01 am - 8:35 amIAH-LGW
17h 34m2 stops
American Airlines Logo
10:40 am - 12:23 amLGW-IAH
19h 43m2 stops
$499American Airlines
Find Deal
Mon, Sep 22 - Wed, Oct 1
British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
9:25 am - 1:45 pmLHR-IAH
10h 20mnonstop
$500British Airways
Find Deal
Wed, Oct 1 - Tue, Oct 7
British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
9:25 am - 1:45 pmLHR-IAH
10h 20mnonstop
$501British Airways
Find Deal
Tue, Aug 12 - Fri, Aug 29
United Airlines Logo
10:00 am - 10:00 amIAH-LHR
18h 00m1 stop
United Airlines Logo
7:25 am - 4:25 pmLHR-IAH
15h 00m1 stop
$507United Airlines
Find Deal
Mon, Aug 18 - Tue, Aug 26
United Airlines Logo
8:15 pm - 11:35 amIAH-LHR
9h 20mnonstop
United Airlines Logo
7:25 am - 4:25 pmLHR-IAH
15h 00m1 stop
$508United Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
Iberia Logo
2:33 pm - 10:50 amHOU-LHR
14h 17m1 stop
Iberia Logo
9:15 am - 8:11 pmLHR-HOU
40h 56m2 stops
$522Iberia
Find Deal
Sun, Aug 31 - Thu, Sep 11
Iberia Logo
4:36 pm - 9:00 amIAH-LHR
34h 24m1 stop
Iberia Logo
9:25 am - 1:40 pmLHR-IAH
10h 15mnonstop
$538Iberia
Find Deal
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?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Houston to London.

Our data shows that the cheapest route for a return flight from Houston to London cost $522 and was between Houston George Bush Intcntl Airport (IAH) and London Heathrow Airport (LHR). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $522.

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 Tuesdays and the most expensive ones on Mondays.

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 October, where tickets cost $650 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,212 and $907 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 20% 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$184
Flight from Houston George Bush Airport to London Gatwick 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 $184 for a one-way ticket and $430 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?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Houston and London, with SkyTeam 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 1317 reviews
6.7Food
6.9Entertainment
8.1Crew
7.6Boarding
7.4Comfort
Airline reviews

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

6.0 GoodAnonymous, Jul 2025HEL - DFW
Read more Finnair reviews

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.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

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.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

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.

British Airways staff are very polite and willing to help.

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

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.

BEWARE!!! Iberia changes your seats at random. I paid for a window seat and they changed it to one in the middle aisle resting against the bathroom- can’t lean back + hear every flush. This on a 11 hour flight.. There were families that were broken up with separate seats all over the plane. Lots of upset passengers showing their seat confirmation to the besieged and helpless airline steward. Also, the gluten free meal was tasteless.

Chair is very high. Your feet cannot touch the ground for 8 hours flight. It was a nightmare. Food was bad.

ground crew and check-in was pathetic - insisted on charging me for luggage even though the ticket said it was already included. They also accidentally sent my luggage through without a luggage tag and had to retrieve it. Generally, it was like a bad movie.

Moved the flight an hour later, were not reliable about confirmation, website didn't work, no gate information, boarding was a mad house. Flight itself was fine and short. Organization needs work.

The app on phone and the online check in is not good, it would not give me the option of Spain or Madrid City in the drop down menu and I couldn't move forward with online check in.

Flight was delayed. Though I checked in with BA live chat three times, our special meals were not provided.

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

Old tired plane, Uncomfortable business class seat. Breakfast dreadful and meagre. At least flight was on time!

The crew is very friendly and helpful. The food is good for airplane food. The flight is long and hard to sleep. The leg space is great. The plane arrived in plenty of time.

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

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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