What airlines fly to London Heathrow Airport?

United Airlines, British Airways and Iberia are the top three most popular airlines that fly to London Heathrow Airport from Houston George Bush Intcntl Airport according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 11 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Houston George Bush Intcntl Airport and London Heathrow Airport?

Toronto (YYZ) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

How often are flights from Houston to London delayed?

Historically, on average around 27% of flights between Houston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which layover airport has the shortest travel time from Houston George Bush Intcntl Airport to London Heathrow Airport?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 12h 28m.

Which layover airport has the shortest connection time from Houston George Bush Intcntl Airport to London Heathrow Airport?

Dallas (DFW) has the shortest average layover time for this route: 2h 21m.

What is the most punctual flight time for Houston to London flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What is the cheapest airline that flies from Houston George Bush Intcntl to London Heathrow?

British Airways, Delta, and Finnair are the most popular carriers operating from Houston George Bush Intcntl to London Heathrow

Which airline has the best punctuality record on Houston to London flights?

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 19% of their flights experiencing any sort of delay.

Which layover airport offers the lowest fares from Houston George Bush Intcntl Airport to London Heathrow Airport?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $756.

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

As of January 2026, there are 11 operators available to choose from for flights 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.

$374 Cheap Flights from Houston George Bush Intcntl Airport to London Heathrow Airport in 2026

Q: How many flights depart from Houston George Bush Intcntl Airport to London Heathrow Airport on average per week?

As of January 2026, there are 126 flights per week flying from Houston George Bush Intcntl Airport to London Heathrow Airport. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

Q: How many flights depart from Houston George Bush Intcntl Airport to London Heathrow Airport on average per day?

As of January 2026, there are 18 flights per day flying from Houston George Bush Intcntl Airport to London Heathrow Airport. The most common time of day flights depart is 4:00PM, with 58% of flights taking off in the afternoon.

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3:50 pm - 6:50 am

IAH

LHR

9h 00mnonstop

9:35 am - 2:05 pm

LHR

IAH

10h 30mnonstop

$630British Airways

Fri, Feb 13 - Wed, Feb 18

5:25 pm - 11:50 am

IAH

LHR

36h 25m1 stop

9:00 am - 9:39 pm

LHR

IAH

18h 39m2 stops

$631Air Canada

Thu, Jan 29 - Tue, Feb 3

6:53 pm - 6:25 am

IAH

LHR

30h 32m1 stop

3:20 pm - 1:35 pm

LHR

IAH

28h 15m1 stop

$632Delta

Sat, Mar 14 - Mon, Apr 6

4:20 pm - 7:30 am

IAH

LHR

9h 10mnonstop

6:00 am - 9:44 pm

LHR

IAH

21h 44m2 stops

$633Austrian Airlines

Thu, Feb 19 - Thu, Feb 26

12:10 pm - 8:35 pm

IAH

LHR

26h 25m2 stops

9:00 am - 9:39 pm

LHR

IAH

18h 39m2 stops

$634Air Canada

Thu, Feb 5 - Thu, Feb 12

5:15 pm - 12:05 pm

IAH

LHR

12h 50m1 stop

10:15 am - 10:31 pm

LHR

IAH

17h 16m1 stop

$635British Airways

Thu, Mar 5 - Tue, Mar 10

5:20 pm - 7:30 am

IAH

LHR

9h 10mnonstop

6:35 am - 5:30 pm

LHR

IAH

15h 55m1 stop

$636United Airlines

Tue, Mar 17 - Thu, Mar 19

9:05 pm - 12:25 pm

IAH

LHR

9h 20mnonstop

2:45 pm - 7:15 pm

LHR

IAH

10h 30mnonstop

$637British Airways

Fri, May 1 - Tue, May 12

3:30 pm - 6:40 am

IAH

LHR

9h 10mnonstop

9:10 am - 1:25 pm

LHR

IAH

10h 15mnonstop

$638British Airways

Mon, Mar 30 - Mon, May 4

5:25 pm - 1:20 pm

IAH

LHR

37h 55m1 stop

3:05 pm - 7:02 pm

LHR

IAH

33h 57m1 stop

$639Air Canada

Sat, Apr 25 - Wed, May 6

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

Feb 13

IAH3:50 pmHouston George Bush Intcntl

9h 00m

LHR6:50 amLondon Heathrow

Feb 18

LHR9:35 amLondon Heathrow

10h 30m

IAH2:05 pmHouston George Bush Intcntl

$630

British Airways

Jan 19

IAH9:45 pmHouston George Bush Intcntl

9h 00m

LHR12:45 pmLondon Heathrow

Jan 26

LHR3:25 pmLondon Heathrow

10h 35m

IAH8:00 pmHouston George Bush Intcntl

$631

British Airways

Jan 21

IAH4:50 pmHouston George Bush Intcntl

12h 50m

1 stop

LHR11:40 amLondon Heathrow

Jan 25

LHR1:10 pmLondon Heathrow

15h 14m

1 stop

IAH10:24 pmHouston George Bush Intcntl

$635

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

Our best United Airlines deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets

United Airlines

Jan 21

IAH9:36 amHouston George Bush Intcntl

18h 34m

1 stop

LHR10:10 amLondon Heathrow

Jan 27

LHR6:30 amLondon Heathrow

17h 45m

1 stop

IAH6:15 pmHouston George Bush Intcntl

$634

United Airlines

Mar 17

IAH5:20 pmHouston George Bush Intcntl

9h 10m

LHR7:30 amLondon Heathrow

Mar 19

LHR6:35 amLondon Heathrow

15h 55m

1 stop

IAH5:30 pmHouston George Bush Intcntl

$636

United Airlines

Apr 12

IAH8:05 pmHouston George Bush Intcntl

9h 30m

LHR11:35 amLondon Heathrow

Apr 21

LHR10:00 amLondon Heathrow

10h 25m

IAH2:25 pmHouston George Bush Intcntl

$640

momondo Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to London Heathrow Airport that are best for you.

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HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Fri 2/13

3:50 pm-6:50 am

Nonstop9h 00m

London Heathrow

Wed 2/18

9:35 am-2:05 pm

Nonstop10h 30m

$630

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 1/29

5:25 pm-11:50 am

1 stop36h 25m

London Heathrow

Tue 2/3

9:00 am-9:39 pm

2 stops18h 39m

$631

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sat 3/14

6:53 pm-6:25 am

1 stop30h 32m

London Heathrow

Mon 4/6

3:20 pm-1:35 pm

1 stop28h 15m

$632

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 2/19

4:20 pm-7:30 am

Nonstop9h 10m

London Heathrow

Thu 2/26

6:00 am-9:44 pm

2 stops21h 44m

$633

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 2/5

12:10 pm-8:35 pm

2 stops26h 25m

London Heathrow

Thu 2/12

9:00 am-9:39 pm

2 stops18h 39m

$634

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 3/5

5:15 pm-12:05 pm

1 stop12h 50m

London Heathrow

Tue 3/10

10:15 am-10:31 pm

1 stop17h 16m

$635

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 3/17

5:20 pm-7:30 am

Nonstop9h 10m

London Heathrow

Thu 3/19

6:35 am-5:30 pm

1 stop15h 55m

$636

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Fri 5/1

9:05 pm-12:25 pm

Nonstop9h 20m

London Heathrow

Tue 5/12

2:45 pm-7:15 pm

Nonstop10h 30m

$637

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 3/30

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

Mon 5/4

9:10 am-1:25 pm

Nonstop10h 15m

$638

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sat 4/25

5:25 pm-1:20 pm

1 stop37h 55m

London Heathrow

Wed 5/6

3:05 pm-7:02 pm

1 stop33h 57m

$639

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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

Prices

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Other information

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 $654. 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 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 in the afternoon. momondo users have found flights departing from Houston George Bush Intcntl Airport to London Heathrow Airport in the afternoon for as low as $925. 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 $973.

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 $818 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 $750 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 6% 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 January 2026, prices for Houston George Bush Intcntl Airport to London Heathrow Airport flights are approximately 14% more expensive 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	$376
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 $376. 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 $719.

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.

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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?
As of January 2026, there are 11 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Houston George Bush Intcntl Airport to London Heathrow Airport is Boeing 777, representing 56.77% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 13.53%, Boeing 787-8 Dreamliner at 9.57%, and Boeing 787-9 Dreamliner at 8.06%.
What is the most popular airline from Houston George Bush Intcntl Airport to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Houston George Bush Intcntl Airport to London Heathrow Airport is United Airlines, representing 37% of all bookings. The subsequent popular airlines are British Airways at 35%, Iberia at 16%, and American Airlines at 4%.

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
JetBlue	PriceFrom $101	Free Cancellation	Rating 7.2 2,896 reviews	Search JetBlue flights
Air Canada	PriceFrom $521	Free Cancellation	Rating 7.1 10,603 reviews	Search Air Canada flights
British Airways	PriceFrom $554	Free Cancellation	Rating 6.7 7,657 reviews	Search British Airways flights
United Airlines	PriceFrom $565	Free Cancellation	Rating 7.4 9,139 reviews	Search United Airlines flights
American Airlines	PriceFrom $572	Free Cancellation	Rating 7.2 11,095 reviews	Search American Airlines flights
Iberia	PriceFrom $579	Free Cancellation	Rating 7.0 3,076 reviews	Search Iberia flights
Virgin Atlantic	PriceFrom $587	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $607	Free Cancellation	Rating 7.9 8,025 reviews	Search Delta flights
Finnair	PriceFrom $613	Free Cancellation	Rating 7.6 1,346 reviews	Search Finnair flights
Lufthansa	PriceFrom $697	Free Cancellation	Rating 6.8 7,692 reviews	Search Lufthansa 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 8 flights/week on average for this route. A good Finnair flight deal for Houston George Bush Intcntl Airport to London Heathrow Airport starts from $613 round-trip, up to an average price of $725. Our users have rated Finnair at 7.6/10.
Austrian Airlines Flights From Houston George Bush Intcntl Airport to London Heathrow Airport
Across 889 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 $723 to $1,294. Price data is based on momondo searches in the last 72 hours.

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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.

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Houston George Bush Intcntl Airport flight routes

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Cheap flights from Houston George Bush Intcntl Airport to London from $374

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

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See travel insights to London from

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

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

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

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?

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 6% 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 January 2026, prices for Houston George Bush Intcntl Airport to London Heathrow Airport flights are approximately 14% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Houston George Bush Intcntl to London Heathrow?

British Airways, Delta, and Finnair are the most popular carriers operating from Houston George Bush Intcntl to London Heathrow

What airlines fly to London Heathrow Airport?

How often are flights from Houston to London delayed?

Historically, on average around 27% of flights between Houston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

What is the most punctual flight time for Houston to London flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Houston to London flights?

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 19% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Houston George Bush Intcntl Airport and London Heathrow Airport?

Toronto (YYZ) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Houston George Bush Intcntl Airport to London Heathrow Airport?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $756.

Which layover airport has the shortest travel time from Houston George Bush Intcntl Airport to London Heathrow Airport?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 12h 28m.

Which layover airport has the shortest connection time from Houston George Bush Intcntl Airport to London Heathrow Airport?

Dallas (DFW) has the shortest average layover time for this route: 2h 21m.

How many flights depart from Houston George Bush Intcntl Airport to London Heathrow Airport on average per day?

As of January 2026, there are 18 flights per day flying from Houston George Bush Intcntl Airport to London Heathrow Airport. The most common time of day flights depart is 4:00PM, with 58% of flights taking off in the afternoon.

How many flights depart from Houston George Bush Intcntl Airport to London Heathrow Airport on average per week?

As of January 2026, there are 126 flights per week flying from Houston George Bush Intcntl Airport to London Heathrow Airport. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

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

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

Fastest flight time

Direct flights

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

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

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?

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

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

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

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

Traveling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London Heathrow Airport trip