Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Houston George Bush Intcntl Airport to London from $249

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Houston George Bush Intcntl Airport to London departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Houston George Bush Intcntl Airport to London (IAH-LHR)

Cheap round-trip flights

British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
9:25 am - 1:40 pmLHR-IAH
10h 15mnonstop
$519British Airways
Find Deal
Mon, Sep 1 - Tue, Sep 16
British Airways Logo
4:36 pm - 10:50 amIAH-LHR
12h 14m1 stop
British Airways Logo
2:50 pm - 7:15 pmLHR-IAH
10h 25mnonstop
$520British Airways
Find Deal
Mon, Sep 1 - Tue, Sep 16
Delta Logo
12:37 pm - 7:15 amIAH-LHR
12h 38m1 stop
Delta Logo
6:20 am - 1:55 pmLHR-IAH
13h 35m1 stop
$521Delta
Find Deal
Tue, Oct 7 - Thu, Dec 25
Iberia Logo
12:10 pm - 8:15 amIAH-LHR
14h 05m1 stop
Iberia Logo
11:45 am - 7:47 pmLHR-IAH
14h 02m1 stop
$527Iberia
Find Deal
Tue, Nov 25 - Wed, Dec 3
Finnair Logo
2:32 pm - 12:45 pmIAH-LHR
16h 13m1 stop
Finnair Logo
10:30 am - 6:13 pmLHR-IAH
13h 43m1 stop
$528Finnair
Find Deal
Mon, Sep 1 - Tue, Sep 16
Iberia Logo
12:08 pm - 6:25 amIAH-LHR
12h 17m1 stop
Iberia Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$529Iberia
Find Deal
Wed, Oct 8 - Tue, Dec 23
American Airlines Logo
6:29 pm - 12:45 pmIAH-LHR
12h 16m1 stop
American Airlines Logo
11:05 am - 6:09 pmLHR-IAH
13h 04m1 stop
$530American Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 16
Delta Logo
11:15 am - 7:15 amIAH-LHR
14h 00m1 stop
Delta Logo
6:15 am - 5:41 pmLHR-IAH
17h 26m2 stops
$531Delta
Find Deal
Sun, Sep 7 - Tue, Sep 23
American Airlines Logo
6:08 pm - 12:05 pmIAH-LHR
11h 57m1 stop
American Airlines Logo
8:20 am - 3:54 pmLHR-IAH
13h 34m1 stop
$541American Airlines
Find Deal
Tue, Nov 25 - Wed, Dec 10
Finnair Logo
9:45 pm - 12:45 pmIAH-LHR
9h 00mnonstop
Finnair Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$566Finnair
Find Deal
Mon, Nov 10 - Sun, Nov 16

American Airlines flights from Houston George Bush Intcntl Airport to London Heathrow Airport

Our best American Airlines deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets
American Airlines
Sep 1
IAH3:30 pmHouston George Bush Intcntl
9h 10m
LHR6:40 amLondon Heathrow
Sep 16
LHR9:25 amLondon Heathrow
10h 15m
IAH1:40 pmHouston George Bush Intcntl
$524
Find similar
American Airlines
Sep 1
IAH3:30 pmHouston George Bush Intcntl
9h 10m
LHR6:40 amLondon Heathrow
Sep 16
LHR9:25 amLondon Heathrow
10h 15m
IAH1:40 pmHouston George Bush Intcntl
$525
Find similar
American Airlines
Sep 1
IAH6:29 pmHouston George Bush Intcntl
12h 16m
1 stop
LHR12:45 pmLondon Heathrow
Sep 16
LHR3:30 pmLondon Heathrow
13h 50m
1 stop
IAH11:20 pmHouston George Bush Intcntl
$529
Find similar

British Airways flights from Houston George Bush Intcntl Airport to London Heathrow Airport

Our best British Airways deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets
British Airways
Sep 1
IAH3:30 pmHouston George Bush Intcntl
9h 10m
LHR6:40 amLondon Heathrow
Sep 16
LHR9:25 amLondon Heathrow
10h 15m
IAH1:40 pmHouston George Bush Intcntl
$519
Find similar
British Airways
Sep 1
IAH4:36 pmHouston George Bush Intcntl
12h 14m
1 stop
LHR10:50 amLondon Heathrow
Sep 16
LHR2:50 pmLondon Heathrow
10h 25m
IAH7:15 pmHouston George Bush Intcntl
$520
Find similar
British Airways
Sep 3
IAH9:00 pmHouston George Bush Intcntl
9h 20m
LHR12:20 pmLondon Heathrow
Sep 9
LHR9:25 amLondon Heathrow
10h 15m
IAH1:40 pmHouston George Bush Intcntl
$522
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Houston George Bush Intcntl Airport to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
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

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/1

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

Tue 9/16

9:25 am-1:40 pm

Nonstop10h 15m

$519

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/1

4:36 pm-10:50 am

1 stop12h 14m

London Heathrow

Tue 9/16

2:50 pm-7:15 pm

Nonstop10h 25m

$520

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 10/7

12:37 pm-7:15 am

1 stop12h 38m

London Heathrow

Thu 12/25

6:20 am-1:55 pm

1 stop13h 35m

$521

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 11/25

12:10 pm-8:15 am

1 stop14h 05m

London Heathrow

Wed 12/3

11:45 am-7:47 pm

1 stop14h 02m

$527

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/1

2:32 pm-12:45 pm

1 stop16h 13m

London Heathrow

Tue 9/16

10:30 am-6:13 pm

1 stop13h 43m

$528

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 10/8

12:08 pm-6:25 am

1 stop12h 17m

London Heathrow

Tue 12/23

9:35 am-2:05 pm

Nonstop10h 30m

$529

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/1

6:29 pm-12:45 pm

1 stop12h 16m

London Heathrow

Tue 9/16

11:05 am-6:09 pm

1 stop13h 04m

$530

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 9/7

11:15 am-7:15 am

1 stop14h 00m

London Heathrow

Tue 9/23

6:15 am-5:41 pm

2 stops17h 26m

$531

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 11/25

6:08 pm-12:05 pm

1 stop11h 57m

London Heathrow

Wed 12/10

8:20 am-3:54 pm

1 stop13h 34m

$541

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 11/10

9:45 pm-12:45 pm

Nonstop9h 00m

London Heathrow

Sun 11/16

9:35 am-2:05 pm

Nonstop10h 30m

$566

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Houston George Bush Intcntl Airport to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Houston George Bush Intcntl Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Houston George Bush Intcntl Airport, with most prices found around $673. If you’re not able to fly to London Heathrow Airport in October, then September is your next best option. Flight prices from Houston George Bush Intcntl Airport to London Heathrow Airport during September average around $675.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $781. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $954.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Houston George Bush Intcntl Airport to London Heathrow Airport at noon for as low as $886. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $978.

What is the cheapest Houston George Bush Intcntl to London Heathrow flight route?

Fly from Houston George Bush Intcntl to London Heathrow for the best Houston George Bush Intcntl - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $803 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Houston George Bush Intcntl Airport for as low as $715 on momondo.

What cabin class options are available on Houston George Bush Intcntl to London Heathrow flights?

There are 4 cabin classes available to choose from on Houston George Bush Intcntl to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Houston George Bush Intcntl Airport to London Heathrow Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a Houston George Bush Intcntl Airport to London Heathrow Airport flight.

How have Houston George Bush Intcntl Airport to London Heathrow Airport flight prices changed over time?

As of August 2025, prices for Houston George Bush Intcntl Airport to London Heathrow Airport flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Houston George Bush Intcntl Airport to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Houston George Bush Intcntl Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Houston George Bush Intcntl Airport to London Heathrow Airport (IAH to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Houston George Bush Intcntl Airport to London Heathrow Airport

Best Price Found

$439

Fastest flight time

9h 00m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Houston George Bush Intcntl Airport in the past 72 hours is $439. The best round-trip flight deal from Houston George Bush Intcntl Airport to London Heathrow Airport found on momondo in the last 72 hours is $604.
The fastest flight from Houston George Bush Intcntl Airport to London Heathrow Airport takes 9h 00m
Direct flights go from Houston George Bush Intcntl Airport to London Heathrow Airport every day.
Search flight deals

  • How far is Houston George Bush Intcntl to London Heathrow by plane?

    The distance between Houston George Bush Intcntl and London Heathrow is about 4820.4 mi. 9h 00m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

    Prices for flights from Houston George Bush Intcntl Airport to London Heathrow Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Houston George Bush Intcntl Airport to London Heathrow Airport?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport to London Heathrow Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Houston George Bush Intcntl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Houston George Bush Intcntl Airport to London Heathrow Airport?

  • What is the most popular airline from Houston George Bush Intcntl Airport to London Heathrow Airport?

Best airlines flying from Houston George Bush Intcntl Airport to London Heathrow Airport

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $101Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
DeltaPriceFrom $396Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $573Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $580Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
FinnairPriceFrom $581Free CancellationRating
7.6
1,320 reviews
Search Finnair flights
Virgin AtlanticPriceFrom $582Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $587Free CancellationRating
6.7
7,291 reviews
Search British Airways flights
United AirlinesPriceFrom $594Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
LufthansaPriceFrom $611Free CancellationRating
6.8
7,344 reviews
Search Lufthansa flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

  • Finnair Flights From Houston George Bush Intcntl Airport to London Heathrow Airport

    Finnair is one of the most popular airlines flying from Houston George Bush Intcntl Airport to London Heathrow Airport, operating 7 flights/week on average for this route. A good Finnair flight deal for Houston George Bush Intcntl Airport to London Heathrow Airport starts from $581 round-trip, up to an average price of $739. Our users have rated Finnair at 7.6/10.

  • Austrian Airlines Flights From Houston George Bush Intcntl Airport to London Heathrow Airport

    Across 832 Austrian Airlines reviews on momondo, the average score is 7.6/10. Austrian Airlines flies from Houston George Bush Intcntl Airport to London Heathrow Airport about 14 times each week, with ticket deals ranging from $644 to $1,343. Price data is based on momondo searches in the last 72 hours.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Luton
Dover
Slough
Milton Keynes
Guildford
Dartford
Crawley
Hayes
Chelmsford
Salisbury
Stansted
Brentwood
Ilford
Folkestone
Swindon
Colchester
Stratford-upon-Avon
Watford

Why use momondo?

Why should I use momondo to find a flight deal from Houston to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Houston to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Houston to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Houston to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Houston to London?

momondo helps you find the best flight between Houston and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Houston to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Houston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/26
Tue 9/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Gatwick Airportfrom $356
Flights to London City Airportfrom $460
Flights to London Stansted Airportfrom $400
Flights to London Luton Airportfrom $420
Flights to London Southend Airportfrom $446
Flights to Glasgow Intl Airportfrom $427
Flights to Belfast Intl Airportfrom $538
Flights to Belfast City Airportfrom $538