$199 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 7/15. 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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Flights 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, Sep 21 - Sun, Sep 28
 Logo
2:35 pm - 6:55 amIAH-LGW
34h 20m1 stop
 Logo
10:00 am - 1:23 pmLGW-IAH
33h 23m1 stop
Sun, Sep 7 - Tue, Sep 23
 Logo
2:35 pm - 6:55 amIAH-LGW
34h 20m1 stop
 Logo
10:00 am - 1:23 pmLGW-IAH
33h 23m1 stop
Wed, Sep 24 - Fri, Sep 26
United Airlines Logo
4:20 pm - 7:40 amIAH-LHR
9h 20mnonstop
United Airlines Logo
6:50 am - 5:15 pmLHR-IAH
16h 25m2 stops
$569United Airlines
Find Deal
Tue, Sep 30 - Wed, Oct 1
British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
5:10 pm - 11:56 pmLHR-IAH
36h 46m2 stops
$576British Airways
Find Deal
Tue, Sep 30 - Wed, Oct 1
British Airways Logo
12:18 pm - 8:05 amIAH-LHR
13h 47m1 stop
British Airways Logo
5:10 pm - 11:56 pmLHR-IAH
36h 46m2 stops
$581British Airways
Find Deal
Sun, Sep 7 - Tue, Sep 23
American Airlines Logo
10:14 am - 8:35 amIAH-LGW
16h 21m2 stops
American Airlines Logo
12:20 pm - 10:32 pmLGW-IAH
16h 12m2 stops
$621American Airlines
Find Deal
Sun, Aug 17 - Wed, Aug 27
United Airlines Logo
4:20 pm - 7:40 amIAH-LHR
9h 20mnonstop
United Airlines Logo
7:25 am - 4:25 pmLHR-IAH
15h 00m1 stop
$628United Airlines
Find Deal
Sat, Nov 15 - Tue, Dec 9
Iberia Logo
2:29 pm - 6:20 amIAH-LHR
33h 51m1 stop
Iberia Logo
9:30 am - 2:10 pmLHR-IAH
10h 40mnonstop
$659Iberia
Find Deal
Sat, Aug 16 - Thu, Aug 28
Iberia Logo
6:50 pm - 6:25 amIAH-LHR
29h 35m1 stop
Iberia Logo
4:25 pm - 11:54 pmLHR-IAH
13h 29m1 stop
$664Iberia
Find Deal
Sat, Oct 4 - Sat, Oct 11
American Airlines Logo
7:00 am - 6:35 amIAH-LGW
17h 35m2 stops
American Airlines Logo
12:20 pm - 10:54 pmLGW-IAH
16h 34m2 stops
$721American Airlines
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
Useful Info

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 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 $586 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 $586.

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 Thursdays.

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 $654 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,223 and $947 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 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Cheapest flight$199
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 
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 $199 for a one-way ticket and $444 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 oneworld 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?

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
See more direct flights

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.
7.4
United AirlinesOverall score based on 8790 reviews
6.6Food
7.0Entertainment
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

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.

2.0 MediocreJane, May 2025SFO - LHR
Read more United Airlines reviews

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.

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

Fight was delayed an hour due to operational issues ,then further delayed due to ground control for a total of about 1.30 hours. Salad was completely frozen and flatware was so cold you could barely handle it. Crew was friendly and professional and the flight was smooth. The aircraft was clean and well-serviced.

In general ok, my only issue is that they had no hot items for purchase. I had very little time in my connection due to baggage/customs/TSA, thag I barely even had a chance for a stop at the washroom and buy water, to make it to my gate when they started boarding. I had nothing to eat because the trip started early, so I was ready to purchase, and they had nothing except for dry items like snacks. I had to purchase a mediocre, overpriced cheese and fruit board, instead of at least a pizza or sliders that I was planning on getting. Other than that, it was fine. But that’s typical Air Canada, to not have enough.

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

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

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.

From boarding, to attention in flight, I couldn’t fault it.

Not having to check carry on bags when plane wasn’t full. (The told us it was)

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

I had an issue with the name on my ticket vs my passport name. I was very upset that the Iberia ticket clerk had no authorization to help me and I was left to fix it. It took 19 calls of persons promising to accomplish and not doing anything before I reached someone who helped me in 10 minutes. Two of them even hung up on me. I missed my original flight because of this. Terrible customer service.

The flight was delayed twice. When the crew explained about the debris causing flat tires, I was glad they took the time to change all four.

My carry-on bag was taken from me when I boarded. It was checked through to London at no charge. It took a big of shuffling, but I was glad not to need to mind it until baggage claim.

Flight boarded three hours late for no reason other than someone made a huge error in crew scheduling. We missed our connecting flight in Madrid and got zero help from American or Iberian airlines on rebooking. We had to pay for a car to take us to the Madrid train station and pay for train tickets to Santiago. We never used our booked flight to Santiago. American claims I can submit the expenses but they are not obligated to cover them. Very frustrating.

Flight delayed Service could be better Iberia staff are not really friendly

They cancelled the flight)(they said bad weather but many other flights took off) and made us wait 5 hours in line to figure out what to do. We ended up making a new flight the next day on another airlines...I hope they honor giving us our money back

Awful. The flight wasn't actually operated by Iberia, but by American Airlines. I was unable to get my boarding pass and as a result missed my connecting flight.

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

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

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

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

Did not fly HOU to SAT as flight was cancelled.

Not good. They charged an additional $70 to check a bag we had already paid for on line with Lufstansa

Flight crew was among the best I’ve ever seen

The payment system was not working so was unable to connect wifi the entire flight

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

My flights were great and the crew on them was lovely especially the London to Barcelona flight as Al & AJ were so amazingly nice. I wish they would be my crew always as they have the best customer service. Sadly both flights were delayed the first one from Vegas was because they clearly loaded the cargo wrong the plane was off balance making us 2 hours late. This made me miss my connection and sadly it was challenging rebooking while I was on the flight. I will never use Kayak again as there was no customer service number or live chat and you rebooked me on a flight 2 days later. I had my mom call BA to change it which she did after spending an hour on hold. This should not be so difficult. My second flight was an hour delayed due to not being able to disconnect the bridge from the plane but I did finally make it home.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

A little better than outward journey but mild chaos at the boarding gate because some people with boarding cards from connecting flights had cards which weren't recognised

The BA business class cabin is excellent,very comfortable for sleeping but the service could be improved.

Surly rude flight attendants. I ordered the chicken and was given a vegetarian meal with no explanation and no opportunity to change it. I tried to order another beverage and was told by the young humorless flight attendant to “wait”. And she never came back. The seats were very uncomfortable and cramped. The last time I flew British Airways was many years ago but I remember it was amazing and the crew were very charming. This was a terrible disappointment given the cost of the flight.

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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