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 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.

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

British Airways, Delta, and Virgin Atlantic are the most popular carriers operating from Houston to London Heathrow

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 39% 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.

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

As of January 2026, 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 afternoon.

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 126 per week as of January 2026. The most frequent departure day is Thu, with 17% of weekly flights leaving on this day.

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.

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 January 2026, 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.

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

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 $691 to $1,133. The lowest price recently found on this route was $630.

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Cheap round-trip flights

Enter your travel dates to find the best prices.

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

11:44 am - 6:45 am

HOU

LHR

13h 01m1 stop

11:45 am - 10:44 pm

LHR

HOU

16h 59m2 stops

$630Delta

Mon, Apr 6 - Wed, Apr 15

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

6:36 pm - 12:15 pm

HOU

LHR

11h 39m1 stop

7:05 pm - 4:12 pm

LHR

HOU

27h 07m2 stops

$634British Airways

Thu, Feb 5 - Mon, Feb 9

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

10:35 am - 6:25 am

HOU

LHR

13h 50m1 stop

1:25 pm - 10:44 pm

LHR

HOU

15h 19m1 stop

$649Virgin Atlantic

Mon, Apr 20 - Sun, Apr 26

British Airways flights from Houston to London Heathrow Airport

Our best British Airways deals on Houston 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

Feb 5

HOU6:36 pmHouston Hobby

11h 39m

1 stop

LHR12:15 pmLondon Heathrow

Feb 9

LHR7:05 pmLondon Heathrow

27h 07m

2 stops

HOU4:12 pmHouston Hobby

$634

United Airlines flights from Houston to London Heathrow Airport

Our best United Airlines deals on Houston 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 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

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

HOU - LHR

HOULHR

Houston Hobby

Mon 4/6

11:44 am-6:45 am

1 stop13h 01m

London Heathrow

Wed 4/15

11:45 am-10:44 pm

2 stops16h 59m

$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

HOU - LHR

HOULHR

Houston Hobby

Thu 2/5

6:36 pm-12:15 pm

1 stop11h 39m

London Heathrow

Mon 2/9

7:05 pm-4:12 pm

2 stops27h 07m

$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

HOU - LHR

HOULHR

Houston Hobby

Mon 4/20

10:35 am-6:25 am

1 stop13h 50m

London Heathrow

Sun 4/26

1:25 pm-10:44 pm

1 stop15h 19m

$649

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

Delays

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 $645. If you’re not able to fly to London Heathrow Airport in February, then September is your next best option. Flight prices from Houston to London Heathrow Airport during September average around $663.

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 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 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 $798 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 $770 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 January 2026, 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 2,895 reviews	Search JetBlue flights
Virgin Atlantic	PriceFrom $497	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Air Canada	PriceFrom $521	Free Cancellation	Rating 7.1 10,603 reviews	Search Air Canada flights
American Airlines	PriceFrom $522	Free Cancellation	Rating 7.2 11,095 reviews	Search American Airlines flights
Finnair	PriceFrom $540	Free Cancellation	Rating 7.6 1,346 reviews	Search Finnair flights
British Airways	PriceFrom $554	Free Cancellation	Rating 6.7 7,657 reviews	Search British Airways flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,139 reviews	Search United Airlines flights
Iberia	PriceFrom $579	Free Cancellation	Rating 7.0 3,076 reviews	Search Iberia flights
Delta	PriceFrom $607	Free Cancellation	Rating 7.9 8,025 reviews	Search Delta flights
Lufthansa	PriceFrom $697	Free Cancellation	Rating 6.8 7,692 reviews	Search Lufthansa flights

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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

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Cheap flights from Houston to London from $374

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 1/22. 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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British Airways flights from Houston to London Heathrow Airport

Our best British Airways deals on Houston to London Heathrow Airport flight tickets

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Our best United Airlines 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.

See travel insights to London from

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

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 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?

British Airways, Delta, and Virgin Atlantic are the most popular carriers operating from Houston 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.

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

As of January 2026, 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 afternoon.

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 126 per week as of January 2026. The most frequent departure day is Thu, 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