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$334+ Cheap flights from George Bush Intcntl (IAH) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LHR
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to London Heathrow are usually found in October or September, booked 89 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from George Bush Intcntl to Heathrow

Cheapest flights from George Bush Intcntl to Heathrow
Explore the most affordable flight options available from George Bush Intcntl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This Gotogate deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:00 am
IAH
-
LHR
1 stop18h 00m
Air Canada
Thu 9/246:50 am
LHR
-
IAH
2 stops21h 02m
Air Canada
Deal found 3/6$632
This Booking.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:00 pm
IAH
-
LHR
2 stops16h 00m
Air Canada
Fri 5/86:50 am
LHR
-
IAH
2 stops19h 09m
Air Canada
Deal found 3/7$635
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:05 pm
IAH
-
LHR
1 stop18h 35m
United Airlines
Fri 5/87:25 am
LHR
-
IAH
1 stop15h 10m
United Airlines
Deal found 3/7$642
This Expedia deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:17 pm
IAH
-
LHR
2 stops54h 13m
Multiple Airlines
Mon 5/117:30 pm
LHR
-
IAH
1 stop24h 05m
Multiple Airlines
Deal found 3/7$645
This Travelocity deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:00 pm
IAH
-
LHR
2 stops27h 35m
Multiple Airlines
Fri 9/112:10 pm
LHR
-
IAH
1 stop13h 42m
Multiple Airlines
Deal found 3/8$659
This KLM deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:50 pm
IAH
-
LHR
1 stop13h 15m
KLM
Thu 9/246:30 am
LHR
-
IAH
1 stop12h 45m
KLM
Deal found 3/6$671
This lol.travel deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:05 pm
IAH
-
LHR
1 stop12h 25m
Virgin Atlantic
Tue 3/315:35 pm
LHR
-
IAH
1 stop26h 00m
Virgin Atlantic
Deal found 3/9$675
This lol.travel deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2211:55 am
IAH
-
LHR
1 stop14h 15m
Air Canada
Tue 4/78:45 am
LHR
-
IAH
2 stops17h 44m
Air Canada
Deal found 3/7$676
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:45 am
IAH
-
LHR
3 stops32h 35m
Multiple Airlines
Thu 5/141:05 pm
LHR
-
IAH
2 stops16h 54m
Multiple Airlines
Deal found 3/9$682
This Booking.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/225:05 pm
IAH
-
LHR
1 stop15h 40m
Virgin Atlantic
Tue 4/76:30 am
LHR
-
IAH
1 stop12h 45m
Virgin Atlantic
Deal found 3/7$688

Find flight deals from George Bush Intcntl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$635
(Booking.com)

One-way from

$334
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$798

Good round-trip deal

$748 or less

Good one-way deal

$407 or less
Provider with most accurate pricing for Houston George Bush Intcntl-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-London Heathrow flights.
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From Houston George Bush Intcntl to London Heathrow
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One-way flight from Houston George Bush Intcntl to London Heathrow
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($223 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Houston George Bush Intcntl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Houston George Bush Intcntl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 12, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 8/18

10:00 am-10:00 am

1 stop18h 00m

London Heathrow

Wed 8/26

6:55 am-4:30 pm

1 stop15h 35m

$711

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 8/10

10:00 am-10:00 am

1 stop18h 00m

London Heathrow

Fri 8/28

6:55 am-4:30 pm

1 stop15h 35m

$711

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 4/30

4:20 pm-7:45 am

Nonstop9h 25m

London Heathrow

Tue 5/19

7:25 am-4:35 pm

1 stop15h 10m

$757

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 5/19

10:00 am-6:30 am

1 stop14h 30m

London Heathrow

Tue 5/26

6:55 am-4:30 pm

1 stop15h 35m

$771
Quickest round-trip

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 3/24

4:50 pm-6:50 am

Nonstop9h 00m

London Heathrow

Sat 4/25

2:45 pm-7:10 pm

Nonstop10h 25m

$786

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 5/13

8:05 pm-11:35 am

Nonstop9h 30m

London Heathrow

Wed 5/20

10:00 am-2:25 pm

Nonstop10h 25m

$796

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Fri 4/24

5:24 am-6:25 am

1 stop19h 01m

London Heathrow

Sun 5/3

6:30 am-1:15 pm

1 stop12h 45m

$812

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 5/20

12:00 pm-6:35 am

1 stop12h 35m

London Heathrow

Sat 6/6

1:40 pm-6:00 pm

Nonstop10h 20m

$864

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 5/14

8:05 pm-11:35 am

Nonstop9h 30m

London Heathrow

Sun 5/17

10:00 am-2:25 pm

Nonstop10h 25m

$926

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 8/17

1:15 pm-4:25 pm

3 stops21h 10m

London Heathrow

Mon 8/24

7:05 am-11:51 pm

3 stops22h 46m

$938

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

Showing 1-10 of 22 resultsSorted by cheapest first
1
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3

Compare providers for flights from George Bush Intcntl to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to Heathrow in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JetabroadPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Houston George Bush Intcntl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from George Bush Intcntl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from George Bush Intcntl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to London Heathrow Airport

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

Use this chart to determine the optimal time to book a round-trip flight from George Bush Intcntl to Heathrow. Price data was last updated on March 6, 2026.

The best time to book flights from Houston George Bush Intcntl Airport to London Heathrow Airport is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to London Heathrow Airport?

Currently, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London Heathrow Airport (average of $508). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of $907). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAH to LHR?

Find hourly flight availability from George Bush Intcntl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 12, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Houston George Bush Intcntl Airport to London Heathrow Airport as you normally would.

The best insider tips for Houston George Bush Intcntl Airport to London Heathrow Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston George Bush Intcntl Airport to London Heathrow Airport trip
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated March 12, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andIberia from Houston George Bush Intcntl Airport to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,418 reviews
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,433 reviews
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,133 reviews
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,846 reviews
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,784 reviews
United Airlines
7.4
Good
9,418 reviews

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    United Airlines and British Airways can get you from Houston George Bush Intcntl Airport to London Heathrow Airport in just under 9h. Your travel time can differ by up to 9h. Houston George Bush Intcntl Airport and London Heathrow Airport are separated by a distance of 4820 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to London Heathrow Airport round-trip?

    Currently priced at $101, JetBlue will fly you from Houston George Bush Intcntl Airport to London Heathrow Airport and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and British Airways - these airlines can fly you to your destination from $521 and $546, respectively. These flights start at 87% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Houston George Bush Intcntl Airport to London Heathrow Airport one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $393. Users have also found prices from $395 and $396 on Iberia and British Airways, respectively.

  • What are the most reliable airlines from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Before booking your flight to London Heathrow Airport from Houston George Bush Intcntl Airport, check out the most reliable airlines to get you to your destination on time: Air Canada (76%), Austrian Airlines (76%), Brussels Airlines( 76%).

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

    On average you can expect to pay $2,272 for a flight from Houston George Bush Intcntl Airport to London Heathrow Airport. The cheapest flight overall is $301 while the most popular route, (Houston George Bush Intcntl - London Heathrow) is currently priced at $691.

  • Can I find deals for flights from George Bush Intcntl to Heathrow that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to Heathrow.

  • Can I find deals for business class flights from George Bush Intcntl to Heathrow?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London Heathrow Airport (average of $508). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of $907). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for George Bush Intcntl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Heathrow flights
George Bush Intcntl to Gatwick flights

Top 10 airlines flying from George Bush Intcntl to Heathrow

Discover the top 10 airlines that operate flights from George Bush Intcntl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$101Average$268FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$521Average$892FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$546Average$845FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$549Average$899FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$572Average$741FlexibilityNo cancel feeOn-time71%
IberiaCheapest$583Average$826FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$587Average$668FlexibilityNo cancel feeOn-time72%
DeltaCheapest$607Average$1,049FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$613Average$762FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$697Average$903FlexibilityNo cancel feeOn-time76%

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