IAH - LHR

$329 Find Cheap Flights from Houston George Bush Airport to London Heathrow Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$795
Typical prices: $771-$1,249
JetBlue
Fri 11/9Thu 11/15
IAH - LHR • 1 stop
Cheapest non-stop
$901
Typical prices: $800-$1,275
Finnair
Fri 11/23Sat 12/8
IAH - LHR • Non-stop
Advice from real travelers
For this long-haul route, Premium Economy adds legroom on United, BA, AA, and Iberia.
On BA, plane type may vary; at IAH, arrive early and confirm your terminal.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with United Airlines and British Airways. Average duration is 9h 08m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 21 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $559 (round-trip)
Shortest trip • 12h 46m (one-way)
Insights
Insights
Start a new search
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We hope you love your trip to London Heathrow Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to London

Mon, Nov 9 - Sun, Nov 15
JetBlue Logo
12:08 pm - 9:40 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
27h 32m1 stop New York John F Kennedy Intl
JetBlue Logo
7:45 am - 11:16 amLHR  London Heathrow-IAH Houston George Bush Intcntl
33h 31m1 stop New York John F Kennedy Intl
$795JetBlue
Mon, Jan 25 - Fri, Jan 29
Air Canada Logo
6:10 pm - 7:10 amIAH  Houston George Bush Intcntl-LHR London Heathrow
55h 00m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 am - 9:34 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
21h 34m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
$804Air Canada
Sun, Jan 10 - Wed, Feb 10
JetBlue Logo
5:40 pm - 9:40 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
22h 00m1 stop New York John F Kennedy Intl
JetBlue Logo
12:20 pm - 11:23 amLHR  London Heathrow-IAH Houston George Bush Intcntl
29h 03m1 stop New York John F Kennedy Intl
$809JetBlue
Mon, Feb 15 - Wed, Feb 17
Air Canada Logo
11:55 am - 7:10 amIAH  Houston George Bush Intcntl-LHR London Heathrow
13h 15m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
6:00 am - 9:34 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
21h 34m2 stops Zurich Montreal Pierre Elliott Trudeau Intl
$809Air Canada
Fri, Dec 4 - Fri, Dec 11
Multiple Airlines Logo
9:24 pm - 2:35 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
35h 11m3 stops Atlanta Hartsfield-Jackson Newark Oslo Gardermoen
Multiple Airlines Logo
6:40 am - 8:45 amLHR  London Heathrow-IAH Houston George Bush Intcntl
32h 05m3 stops Stockholm Arlanda Newark Atlanta Hartsfield-Jackson
$828Multiple Airlines
Wed, Jan 27 - Fri, Jan 29
Lufthansa Logo
4:10 pm - 12:50 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
14h 40m1 stop Frankfurt am Main
Lufthansa Logo
8:45 am - 10:52 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
20h 07m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$839Lufthansa
Mon, Jan 25 - Wed, Jan 27
Lufthansa Logo
4:10 pm - 12:50 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
14h 40m1 stop Frankfurt am Main
Lufthansa Logo
6:35 am - 10:52 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
22h 17m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl
$839Lufthansa
Thu, Nov 12 - Mon, Nov 23
Multiple Airlines Logo
6:00 am - 2:20 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
26h 20m3 stops Atlanta Hartsfield-Jackson Miami Paris Orly
Multiple Airlines Logo
6:40 am - 12:25 amLHR  London Heathrow-IAH Houston George Bush Intcntl
23h 45m3 stops Stockholm Arlanda Reykjavik Keflavik Intl Orlando
$840Multiple Airlines
Sun, Apr 11 - Wed, Apr 14
United Airlines Logo
6:10 pm - 1:20 pmIAH  Houston George Bush Intcntl-LHR London Heathrow
37h 10m1 stop Vancouver Intl
United Airlines Logo
7:25 am - 4:35 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
15h 10m1 stop Munich Franz Josef Strauss
$872United Airlines
Mon, Feb 15 - Wed, Feb 17
United Airlines Logo
7:00 pm - 10:15 amIAH  Houston George Bush Intcntl-LHR London Heathrow
9h 15mnonstop
United Airlines Logo
9:30 am - 6:15 pmLHR  London Heathrow-IAH Houston George Bush Intcntl
14h 45m1 stop Frankfurt am Main
$881United Airlines
Booking Insights

Price, demand and travel trends for Houston George Bush Intcntl Airport to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Houston George Bush Intcntl Airport to London Heathrow Airport?

Round-trip flights from Houston George Bush Intcntl Airport to London Heathrow Airport typically range from $771 to $1,249. The lowest price found in the past 5 days was $795, on JetBlue.

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

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Houston George Bush Intcntl Airport to London Heathrow Airport. It’s 7% cheaper than the average day, while Monday is the most expensive, with prices 9% higher.

What’s the cheapest month to fly from Houston George Bush Intcntl Airport to London Heathrow Airport?

•January is the cheapest month to fly from Houston George Bush Intcntl Airport to London Heathrow Airport at $702 round-trip.
•June ($1,377) and July ($1,208) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 96% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Houston George Bush Intcntl Airport to London Heathrow Airport the cheapest?

Flights from Houston George Bush Intcntl Airport to London Heathrow Airport are cheapest 21 weeks before departure. Booking in this window typically costs about 20% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from George Bush Intcntl to London

 
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.

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.

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.

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.

Key details for Houston George Bush Intcntl Airport to London Heathrow Airport flights

Low season

January

Cheapest flight

$329
Beat the crowds with an average 32% drop in travelers.
The most popular month to fly with an average 48% increase in travelers.
One-way flight from Houston George Bush Intcntl Airport to London Heathrow Airport

When to book flights from George Bush Intcntl to London

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from George Bush Intcntl to London: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from George Bush Intcntl to London 
AndrewFlew with United AirlinesJul 2025
United really looked after me, just make sure you arrive good and early to ensure an unpressurised check in
Verified travelerFlew with British AirwaysMay 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 AirlinesApr 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.

Your Houston George Bush Intcntl Airport to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    These are the earliest and latest flight times available from Houston George Bush Intcntl Airport to London Heathrow Airport:

    • Earliest: departs at 3:50 pm and lands at 12:58 am
    • Latest: departs at 10:40 pm and lands at 7:48 am.

    The flight takes about 9h 08m.

  • What cabin classes can I book on flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Four cabin classes are available on flights from Houston George Bush Intcntl Airport to London Heathrow Airport:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Houston George Bush Intcntl Airport to London Heathrow Airport?

    A nonstop flight from Houston George Bush Intcntl Airport to London Heathrow Airport takes 9h 08m, covering 4,820 miles.

  • Do I need a passport to fly from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Houston George Bush Intcntl Airport to London Heathrow Airport flight?

    Round-trip flights from Houston George Bush Intcntl Airport to London Heathrow Airport range from $771 to $1,249, with an average of $976 over the past 12 months. Anything below $771 counts as a good deal.

  • How expensive are last-minute Houston George Bush Intcntl Airport to London Heathrow Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 19% above the $976 route average. Book 21 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Houston George Bush Intcntl Airport to London Heathrow Airport?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $559 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $1,004 for nonstop.

  • What is the standard checked-bag allowance on flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $36–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    The Boeing 777 family is used most often on this route, operated mainly by United Airlines and Lufthansa. Other aircraft seen on the route include Boeing 787-10 Dreamliner variants.

  • How are flight departures from Houston George Bush Intcntl Airport to London Heathrow Airport spread across the day?

    Afternoon is the busiest departure period on Houston George Bush Intcntl Airport to London Heathrow Airport flights, with 50% of flights leaving in that window. Evening departures account for 25%, night flights for 25%, and morning flights for 0%.

  • Which airlines offer Wi-Fi on Houston George Bush Intcntl Airport to London Heathrow Airport flights?

    American Airlines is the only airline on the Houston George Bush Intcntl Airport to London Heathrow Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Houston George Bush Intcntl Airport to London Heathrow Airport looking right now?

    One-way fares from Houston George Bush Intcntl Airport to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about $343, which is 38% below the typical average for this route.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates starting from around $7 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Flights from Houston George Bush Intcntl Airport to London Heathrow Airport usually depart from Houston George Bush Intcntl (IAH) and arrive at London Heathrow (LHR).

  • What time of day has the fewest delays on flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Night flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from Houston George Bush Intcntl Airport to London Heathrow Airport?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Houston George Bush Intcntl Airport to London Heathrow Airport route, 20% of flights were delayed in the past 3 months, with delays averaging 2h 33m.

  • Which airports do connecting flights from Houston George Bush Intcntl Airport to London Heathrow Airport pass through?

    One-stop flights from Houston George Bush Intcntl Airport to London Heathrow Airport most commonly connect through:

    • Istanbul (IST) - 31% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 25% of one-stop connections
    • Amsterdam Schiphol (AMS) - 8% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 8% of one-stop connections

  • Can I save money by using flexible dates for flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Yes. Flexible dates can save you up to 15% on flights from Houston George Bush Intcntl Airport to London Heathrow Airport. Wednesday is the cheapest departure day at $912 round-trip on average, while Monday is the most expensive at $1,069, a difference of $157.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Houston George Bush Intcntl Airport to London Heathrow Airport?

    2 airlines operate flights between Houston George Bush Intcntl Airport and London Heathrow Airport. The airlines offering nonstop flights on this route include:

    • United Airlines
    • British Airways

  • How much time can I save by choosing a different layover airport from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Flying via Washington, D.C. Dulles Intl (IAD) gives the shortest average 1-stop total travel time at 12h 46m, compared with 12h 47m via Dallas/Fort Worth (DFW) and 12h 53m via Boston Logan Intl (BOS).

  • What is the time difference between Houston George Bush Intcntl Airport and London Heathrow Airport?

    London Heathrow Airport is 5 hours ahead of Houston George Bush Intcntl Airport (British Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Houston George Bush Intcntl Airport to London Heathrow Airport flights?

    Among airlines operating Houston George Bush Intcntl Airport to London Heathrow Airport flights:

    • British Airways: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • American Airlines: offers free seat selection
    • Iberia: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Houston George Bush Intcntl Airport to London Heathrow Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • British Airways: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class
    • American Airlines: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What can I do at IAH while waiting to board my flight?

    There are so many things that you can do at IAH while you await your flight. The airport features classical and jazz musicians four days a week. The concerts are usually in Terminals A and D of the airport. Alternatively, you can explore the airport’s art exhibits which host Texas's largest art collections, or you can have a 5min chair massage session.

  • How is parking at IAH?

    There are several parking options that the Houston Airport System offers to passengers who wish to leave their cars at the airport. Those who wish to park at the airport for more than 24h can utilize the long-term parking lot at Surepark Parking, Ecopark, and Valet parking programs. Alternatively, if you are going on a short trip and wish to leave your car at the airport, you can use the terminal parking garages, which include Corporate parking. The airport also offers a shuttle service, picking up and dropping off passengers at the parking terminals.

  • Where can I spend the night at LHR?

    Airport sleepers can stay at LHR with ease. If you plan to spend the night at Heathrow Airport, be aware that the comfort levels and sleeping arrangements vary among the terminals. There is a lot of seating in T2 that is conducive to napping. An eye mask is useful because there aren't many places that are both secluded and dimly lit. There are dedicated rest areas in T3 that have couches and lounges. The greatest sleeping choices in T4 are on the landside, and it appears that the airside area will close at night.

  • Is LHR family-friendly?

    Yes, the airport is family-friendly. It features an exceptionally colorful and interactive kids’ play area equipped with climbing toys and slides. The play areas are located on the airside. Furthermore, it offers a Kid’s Eat Free program that allows kids to eat at restaurants for free.

Your guide to booking Houston George Bush Intcntl Airport to London Heathrow Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $912, about $157 less than Monday fares (15% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 21 weeks before you fly. On this route, that window historically saves about 20% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Houston George Bush Intcntl Airport to London Heathrow Airport trip for January. Fares historically average $702 round-trip in that month - typically $675 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with British Airways. Over the past three months, 85% of British Airways flights from Houston George Bush Intcntl Airport to London Heathrow Airport arrived on time, slightly above the route average of 80%. When flights on this route arrive late, they're delayed by an average of 2h 33m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Atlanta Hartsfield-Jackson Airport (ATL) can be cheaper than flying direct. The cheapest layover option averages $559 round-trip on this route - about $445 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport
  • Houston George Bush Intercontinental Airport (IAH) is Houston's major airport. It is located approximately 22 miles from downtown Houston and serves as the hub of United Airlines. It is also the focus city for Spirit Airlines.
  • Nursing mothers traveling through IAH have many nursing lounges at their disposal that they can utilize at no extra charge. The airport features four lactation suites that are equipped with comfortable seats, rockers, soft lighting, electrical power sockets, and sinks. They are located in Terminal A near gate A17 and between the Breakfast Klub and Gate A2 and Terminal C opposite gate C4.
  • The London Airport T5 train is the quickest way to travel from Heathrow Airport (LHR) to London. The train takes approximately 15min to get to London compared to taxis which take 26min. However, if you want the freedom of moving around the city, you can hire car rentals such as Avis, Enterprise, and Budget. They are located near the baggage claim area.
  • There are no designated pet relief areas inside LHR terminals because animals are not permitted in the airport. However, you can use an escort to bring your furry companion outside. Nonetheless, those with service animals have options at LHR and need to be on a leash.
  • Both the departure and arrival airports feature multiple exceptional lounges that passengers flying through the airports can take advantage of. These lounges are mostly airline-operated and offer exceptional services, including meals, drinks, and showers. Moreover, they provide an excellent place to refresh, unwind, and indulge while waiting for airport shuttle transfers or to take off.

Prefer to fly direct from Houston George Bush Airport to London Heathrow Airport?

 
Find which airlines fly direct from Houston George Bush Intcntl Airport to London Heathrow Airport, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl 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 George Bush Intcntl

Monday

British Airways,United Airlines

British Airways,United Airlines

Tuesday

British Airways,United Airlines

British Airways,United Airlines

Wednesday

British Airways,United Airlines

British Airways,United Airlines

Thursday

British Airways,United Airlines

British Airways,United Airlines

Friday

British Airways,United Airlines

British Airways,United Airlines

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

More options for your flight from George Bush Intcntl to London

Complete your trip to London with a hotel stay or car rental