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

WestJet, Air Canada, and British Airways are the most popular carriers operating from Houston to London Heathrow

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

As of August 2025, there are 18 flights per day flying from Houston to London Heathrow Airport. The most common time of day flights depart is 4:00PM, with 58% of flights taking off in the evening.

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

The number of flights available between Houston and London Heathrow Airport is 130 per week as of August 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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 according to our data. United Airlines is the first choice among our users, with 38% 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.

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

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

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

As of August 2025, there are 11 operators available to choose from for flights from Houston to London Heathrow Airport.

How old do you have to be to fly from Houston to London Heathrow Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to London Heathrow Airport.

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

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$239 Cheap Flights from Houston to London Heathrow Airport in 2025

Q: What is the typical price of a round-trip flight between Houston and London Heathrow Airport?

Prices are currently low for flights on this route. Typical prices usually range from $655 to $834. The lowest price recently found on this route was $519.

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:30 pm - 6:40 amIAH-LHR

9h 10mnonstop

9:25 am - 1:40 pmLHR-IAH

10h 15mnonstop

$519British Airways

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lun., sep. 1 - mar., sep. 16

4:36 pm - 10:50 amIAH-LHR

12h 14m1 stop

2:50 pm - 7:15 pmLHR-IAH

10h 25mnonstop

$520British Airways

Find Deal

lun., sep. 1 - mar., sep. 16

12:10 pm - 6:50 amIAH-LHR

12h 40m1 stop

9:35 am - 2:05 pmLHR-IAH

10h 30mnonstop

$521Iberia

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mar., nov. 25 - mié., dic. 3

2:32 pm - 9:00 amIAH-LHR

12h 28m1 stop

10:30 am - 6:13 pmLHR-IAH

13h 43m1 stop

$525Finnair

Find Deal

lun., sep. 1 - mar., sep. 16

3:30 pm - 6:40 amIAH-LHR

9h 10mnonstop

9:35 am - 3:05 pmLHR-IAH

10h 30mnonstop

$527American Airlines

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mié., oct. 8 - mié., oct. 29

4:47 pm - 10:50 amIAH-LHR

12h 03m1 stop

9:25 am - 1:45 pmLHR-IAH

10h 20mnonstop

$529Iberia

Find Deal

mié., oct. 8 - mié., oct. 15

6:08 pm - 12:05 pmIAH-LHR

11h 57m1 stop

8:20 am - 3:54 pmLHR-IAH

13h 34m1 stop

$541American Airlines

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mar., nov. 25 - mié., dic. 10

2:27 pm - 2:25 pmIAH-LHR

17h 58m1 stop

2:50 pm - 7:15 pmLHR-IAH

10h 25mnonstop

$571Finnair

Find Deal

mié., oct. 1 - dom., oct. 5

1:07 pm - 1:30 pmIAH-LHR

18h 23m1 stop

6:15 am - 5:41 pmLHR-IAH

17h 26m2 stops

$593Delta

Find Deal

lun., sep. 1 - mar., sep. 16

6:34 pm - 1:30 pmHOU-LHR

12h 56m1 stop

6:15 am - 5:40 pmLHR-HOU

17h 25m2 stops

$593Delta

Find Deal

lun., sep. 1 - mar., sep. 16

Virgin Atlantic flights from Houston to London Heathrow Airport

Our best Virgin Atlantic deals on Houston to London Heathrow Airport flight tickets

Virgin Atlantic

Sep 1

IAH6:00 pmHouston George Bush Intcntl

13h 30m

1 stop

LHR1:30 pmLondon Heathrow

Sep 16

LHR6:30 amLondon Heathrow

12h 45m

1 stop

IAH1:15 pmHouston George Bush Intcntl

$523

Find similar

Virgin Atlantic

Sep 3

IAH11:05 amHouston George Bush Intcntl

13h 15m

2 stops

LHR6:20 amLondon Heathrow

Sep 18

LHR6:15 amLondon Heathrow

13h 20m

1 stop

IAH1:35 pmHouston George Bush Intcntl

$588

Find similar

Virgin Atlantic

Aug 27

IAH11:05 amHouston George Bush Intcntl

13h 15m

2 stops

LHR6:20 amLondon Heathrow

Sep 1

LHR8:55 pmLondon Heathrow

22h 20m

1 stop

IAH1:15 pmHouston George Bush Intcntl

$589

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Delta flights from Houston to London Heathrow Airport

Our best Delta deals on Houston to London Heathrow Airport flight tickets

Delta

Sep 1

IAH1:07 pmHouston George Bush Intcntl

18h 23m

1 stop

LHR1:30 pmLondon Heathrow

Sep 16

LHR6:15 amLondon Heathrow

17h 26m

2 stops

IAH5:41 pmHouston George Bush Intcntl

$593

Find similar

Delta

Nov 25

HOU6:00 amHouston Hobby

21h 00m

1 stop

LHR9:00 amLondon Heathrow

Dec 10

LHR11:45 amLondon Heathrow

27h 38m

2 stops

HOU9:23 amHouston Hobby

$594

Find similar

Delta

Sep 2

HOU9:57 amHouston Hobby

18h 03m

2 stops

LHR10:00 amLondon Heathrow

Sep 12

LHR11:30 amLondon Heathrow

17h 07m

2 stops

HOU10:37 pmHouston Hobby

$597

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Houston 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

lun. 9/1

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

mar. 9/16

9:25 am-1:40 pm

Nonstop10h 15m

$519

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun. 9/1

4:36 pm-10:50 am

1 stop12h 14m

London Heathrow

mar. 9/16

2:50 pm-7:15 pm

Nonstop10h 25m

$520

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar. 11/25

12:10 pm-6:50 am

1 stop12h 40m

London Heathrow

mié. 12/3

9:35 am-2:05 pm

Nonstop10h 30m

$521

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun. 9/1

2:32 pm-9:00 am

1 stop12h 28m

London Heathrow

mar. 9/16

10:30 am-6:13 pm

1 stop13h 43m

$525

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 10/8

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

mié. 10/29

9:35 am-3:05 pm

Nonstop10h 30m

$527

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 10/8

4:47 pm-10:50 am

1 stop12h 03m

London Heathrow

mié. 10/15

9:25 am-1:45 pm

Nonstop10h 20m

$529

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar. 11/25

6:08 pm-12:05 pm

1 stop11h 57m

London Heathrow

mié. 12/10

8:20 am-3:54 pm

1 stop13h 34m

$541

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 10/1

2:27 pm-2:25 pm

1 stop17h 58m

London Heathrow

dom. 10/5

2:50 pm-7:15 pm

Nonstop10h 25m

$571

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun. 9/1

1:07 pm-1:30 pm

1 stop18h 23m

London Heathrow

mar. 9/16

6:15 am-5:41 pm

2 stops17h 26m

$593

HoustonLondon

HOU - LHR

HOULHR

Houston Hobby

lun. 9/1

6:34 pm-1:30 pm

1 stop12h 56m

London Heathrow

mar. 9/16

6:15 am-5:40 pm

2 stops17h 25m

$593

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Houston 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

Airlines

Other information

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

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

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Houston, with most prices found around $648. If you’re not able to fly to London Heathrow Airport in February, then October is your next best option. Flight prices from Houston to London Heathrow Airport during October average around $664.

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 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 to London Heathrow flight route?

Fly from Houston George Bush Intcntl to London Heathrow for the best Houston - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $820 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 for as low as $697 on momondo.

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

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

Cheap Houston to London Heathrow Airport flight deals and tips

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

Fastest flight time	9h 00m
Direct flights	Every day

The fastest flight from Houston to London Heathrow Airport takes 9h 00m

Direct flights go from Houston to London Heathrow Airport every day.

Search flight deals

How far is Houston to London Heathrow by plane?
Houston and London Heathrow are 4833.3 mi apart from one another. 9h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Houston to London Heathrow Airport?
Prices for flights from Houston to London Heathrow Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Houston to London Heathrow Airport?
As of August 2025, there are 11 operators available to choose from for flights from Houston to London Heathrow Airport.
How old do you have to be to fly from Houston to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Houston to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Houston to London Heathrow Airport

Compare and see reviews for airlines that fly from Houston to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $101	Free Cancellation	Rating 7.2 2,916 reviews	Search JetBlue flights
Delta	PriceFrom $396	Free Cancellation	Rating 7.9 7,982 reviews	Search Delta flights
American Airlines	PriceFrom $522	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Iberia	PriceFrom $562	Free Cancellation	Rating 7.0 2,887 reviews	Search Iberia flights
Finnair	PriceFrom $581	Free Cancellation	Rating 7.6 1,320 reviews	Search Finnair flights
Virgin Atlantic	PriceFrom $582	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $587	Free Cancellation	Rating 6.7 7,289 reviews	Search British Airways flights
United Airlines	PriceFrom $594	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Lufthansa	PriceFrom $611	Free Cancellation	Rating 6.8 7,337 reviews	Search Lufthansa flights
Air Canada	PriceFrom $635	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights

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Watford

Why use momondo?

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

It is quick and easy to find Houston to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

momondo does allow users to show only those flights to London from Houston which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Houston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Houston and alert you when they change.

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.

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Cheap flights from Houston to London from $239

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 to London departing on 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Virgin Atlantic flights from Houston to London Heathrow Airport

Our best Virgin Atlantic deals on Houston to London Heathrow Airport flight tickets

Delta flights from Houston to London Heathrow Airport

Our best Delta deals on Houston to London Heathrow Airport flight tickets

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

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How to get the cheapest flight ticket from Houston 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 and London Heathrow Airport?

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

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?

What is the cheapest Houston to London Heathrow flight route?

Fly from Houston George Bush Intcntl to London Heathrow for the best Houston - 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 to London Heathrow flights?

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

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

WestJet, Air Canada, and British Airways are the most popular carriers operating from Houston to London Heathrow

What airlines fly to London Heathrow Airport?

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

As of August 2025, there are 18 flights per day flying from Houston to London Heathrow Airport. The most common time of day flights depart is 4:00PM, with 58% of flights taking off in the evening.

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

The number of flights available between Houston and London Heathrow Airport is 130 per week as of August 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

Cheap Houston to London Heathrow Airport flight deals and tips

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

Fastest flight time

Direct flights

How far is Houston to London Heathrow by plane?

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

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

How old do you have to be to fly from Houston to London Heathrow Airport?

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

Best airlines flying from Houston to London Heathrow Airport

Compare and see reviews for airlines that fly from Houston to London Heathrow Airport with momondo

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

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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