IAH - LHR

$332 Find Cheap Flights from Houston George Bush Airport to London Heathrow Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Heathrow departing on 10/21. 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.
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Everything you should know

Cheapest round-trip
$836
Typical prices: $592-$862
WestJet
Fri 10/23Mon 11/2
IAH - LHR • 1 stop
Cheapest non-stop
$872
Typical prices: $603-$880
Iberia
Wed 10/21Wed 10/28
IAH - LHR • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
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
Expert advice
+1
+1
Expert advice
Expert advice
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Nonstop flights
Every day
You can fly direct with British Airways and United Airlines. Average duration is 9h 17m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
British Airways
Most punctual • 84% on-time
Night flights
Best time • Fewest delays
Insights
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Insights
Insights
Top layover airports
Atlanta (ATL)
Cheapest • Avg $679 (round-trip)
Dallas (DFW)
Shortest trip • 11h 45m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 22% price drop
July
Most popular
Good to know
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+1
+1
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We hope you love your trip to Heathrow!
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to Heathrow 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 George Bush Intcntl to Heathrow

Fri, Oct 23 - Mon, Nov 2
Multiple Airlines Logo
2:50 pm - 12:05 pm
IAH
-
LHR
15h 15m
1 stop
Multiple Airlines Logo
8:35 pm - 7:49 pm
LHR
-
IAH
53h 14m
2 stops
$836Multiple Airlines
Wed, Oct 21 - Wed, Oct 28
Multiple Airlines Logo
10:00 am - 6:30 am
IAH
-
LHR
14h 30m
1 stop
Multiple Airlines Logo
6:50 am - 9:39 pm
LHR
-
IAH
19h 49m
2 stops
$850Multiple Airlines
Tue, Oct 27 - Fri, Oct 30
United Airlines Logo
6:10 pm - 11:50 am
IAH
-
LHR
36h 40m
1 stop
United Airlines Logo
6:35 am - 5:20 pm
LHR
-
IAH
15h 45m
1 stop
$858United Airlines
Mon, Nov 23 - Thu, Nov 26
United Airlines Logo
6:10 pm - 11:50 am
IAH
-
LHR
35h 40m
1 stop
United Airlines Logo
6:35 am - 4:20 pm
LHR
-
IAH
15h 45m
1 stop
$858United Airlines
Sun, Dec 6 - Tue, Dec 22
Virgin Atlantic Logo
3:25 pm - 8:50 pm
IAH
-
LHR
23h 25m
1 stop
Virgin Atlantic Logo
6:20 am - 4:50 pm
LHR
-
IAH
16h 30m
1 stop
$865Virgin Atlantic
Wed, Nov 25 - Thu, Dec 3
Virgin Atlantic Logo
1:15 pm - 6:25 am
IAH
-
LHR
11h 10m
1 stop
Virgin Atlantic Logo
6:30 am - 1:25 pm
LHR
-
IAH
12h 55m
1 stop
$868Virgin Atlantic
Mon, Sep 21 - Tue, Oct 6
Delta Logo
4:58 pm - 11:20 am
IAH
-
LHR
12h 22m
1 stop
Delta Logo
6:30 am - 1:20 pm
LHR
-
IAH
12h 50m
1 stop
$869Delta
Wed, Sep 30 - Fri, Oct 9
Lufthansa Logo
8:15 pm - 11:35 am
IAH
-
LHR
9h 20mnonstop
Lufthansa Logo
6:55 am - 4:40 pm
LHR
-
IAH
15h 45m
1 stop
$871Lufthansa
Mon, Oct 12 - Thu, Oct 22
Delta Logo
6:00 pm - 1:05 pm
IAH
-
LHR
13h 05m
1 stop
Delta Logo
6:30 am - 1:20 pm
LHR
-
IAH
12h 50m
1 stop
$874Delta
Sun, Oct 4 - Wed, Oct 28
Lufthansa Logo
4:25 pm - 7:45 am
IAH
-
LHR
9h 20mnonstop
Lufthansa Logo
6:30 am - 3:00 pm
LHR
-
IAH
13h 30m
1 stop
$880Lufthansa
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Heathrow flights

Get data-powered insights and trends into flights from George Bush Intcntl to Heathrow to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Houston George Bush Intcntl Airport to London Heathrow Airport departing in October.

Flight prices are typical for this route right now.

Flights to London Heathrow Airport from Houston George Bush Intcntl Airport usually cost between $617 and $989 in October.
The lowest price found in the past 5 days was $836 on Multiple Airlines (Oct 23-Nov 2).

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

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

Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Wednesday and more expensive on a Friday. On your return trip to Houston George Bush Airport, you should consider flying back on a Sunday, and avoid Tuesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to London Heathrow Airport is October, where tickets cost $698 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,416 and $1,240 respectively.

Can I save money by flying with a layover from Houston George Bush Intcntl Airport to London Heathrow Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $860 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to London Heathrow Airport, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

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Expert advice

Expert advice for your flight from George Bush Intcntl to Heathrow

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
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.

Read more
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.

Read more
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.

Read more
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.

Read more

Good to know

Low season

January

Cheapest flight

$332
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Houston George Bush Airport to London Heathrow Airport

When to book flights from George Bush Intcntl to Heathrow

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Heathrow 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 George Bush Intcntl to Heathrow: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from George Bush Intcntl to Heathrow 
Learn how KAYAK collects reviews and tips from users.
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.

FAQs for booking Houston George Bush Airport to London Heathrow Airport flights

  • 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.

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

    In the last 5 days, the lowest price for a flight from Houston George Bush Intcntl Airport to London Heathrow Airport was $332 for a one-way ticket and $856 for a round-trip.

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

    Yes, you’ll need a passport to travel to London Heathrow Airport from Houston George Bush Airport.

  • Which airlines offer Wi-Fi service onboard planes from Houston George Bush Airport to London Heathrow Airport?

    Only American Airlines offers inflight Wi-Fi service on the Houston George Bush Airport to London Heathrow Airport flight route.

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

    The Boeing 777 is the aircraft model that flies most regularly on the Houston George Bush Airport to London Heathrow Airport flight route.

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

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

  • On which days can I fly direct from Houston George Bush Airport to London Heathrow Airport?

    There are nonstop flights from Houston George Bush Airport to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Houston to London, Finnair or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to London are Finnair and Austrian Airlines. With an average price for the route of $777 and an overall rating of 7.6, Finnair is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of $1,489 and an overall rating of 7.6.

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

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to London Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Houston George Bush Airport 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 George Bush Airport to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and LHR can sometimes prove cheaper using this method.

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

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $464 or less one-way and $1,007 or less round-trip.
  • 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?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston George Bush Intcntl to London Heathrow.
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

Aer Lingus,British Airways,United Airlines

Aer Lingus,British Airways, +1 more

Saturday

British Airways,United Airlines

British Airways,United Airlines

Sunday

British Airways,United Airlines

British Airways,United Airlines

See more direct flights

Everything you need to know for your flight from George Bush Intcntl to Heathrow

Information on your arrival and departure airports

Houston George Bush Airport (IAH)
Heathrow (LHR)