Which airlines fly to London?

British Airways, United Airlines and Lufthansa are the top three most popular airlines that fly to London from Houston George Bush Intcntl Airport according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when travelling to London. Keep in mind that there are 4 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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 departing 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?

Austrian Airlines, WestJet, and Virgin Atlantic are the most popular carriers operating from Houston George Bush Intcntl to London

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Friday 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 fewest delays on this route over the last 12 months, with about 19% of their flights experiencing any sort of delay.

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 145 minutes.

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

As of November 2025, there are 4 operators available to choose from for flights from Houston George Bush Intcntl Airport to London.

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

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 George Bush Intcntl Airport to London.

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

The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£286 Cheap Flights from Houston George Bush Intcntl Airport to London in 2025/26

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19:45 - 10:00IAH-LGW

32h 15m1 stop

14:00 - 22:41LGW-IAH

14h 41m1 stop

£476Multiple Airlines

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mer, 7 gen - sab, 10 gen

12:10 - 07:10IAH-LHR

13h 00m1 stop

09:00 - 21:44LHR-IAH

17h 44m2 stops

£477Air Canada

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mar, 17 feb - mar, 10 mar

07:10 - 06:30IAH-LHR

17h 20m1 stop

06:50 - 21:39LHR-IAH

20h 49m2 stops

£477Air Canada

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mer, 7 gen - mer, 14 gen

06:00 - 07:30IAH-LGW

19h 30m2 stops

11:20 - 23:59LGW-IAH

18h 39m2 stops

£478American Airlines

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lun, 26 gen - mar, 3 feb

10:03 - 09:20IAH-LHR

17h 17m2 stops

09:00 - 21:39LHR-IAH

18h 39m2 stops

£478Air Canada

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mer, 14 gen - mer, 21 gen

19:05 - 10:15IAH-LHR

9h 10mdirect

09:30 - 18:15LHR-IAH

14h 45m1 stop

£480United Airlines

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mer, 7 gen - mer, 14 gen

16:20 - 07:30IAH-LHR

9h 10mdirect

09:30 - 18:15LHR-IAH

14h 45m1 stop

£480United Airlines

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lun, 26 gen - mer, 4 feb

16:20 - 07:40IAH-LHR

9h 20mdirect

20:25 - 16:35LHR-IAH

26h 10m1 stop

£482Lufthansa

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mar, 28 apr - lun, 11 mag

21:45 - 12:45IAH-LHR

9h 00mdirect

09:35 - 14:05LHR-IAH

10h 30mdirect

£484Iberia

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lun, 26 gen - ven, 6 feb

18:55 - 17:40IAH-LCY

16h 45m1 stop

09:50 - 18:15LCY-IAH

14h 25m1 stop

£501Lufthansa

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mer, 14 gen - mer, 21 gen

Virgin Atlantic flights from Houston George Bush Intcntl Airport to London

Our best Virgin Atlantic deals on Houston George Bush Intcntl Airport to London flight tickets

Virgin Atlantic

14 Jan

IAH16:05Houston George Bush Intcntl

15h 40m

1 stop

LHR13:45London Heathrow

19 Jan

LHR20:25London Heathrow

23h 05m

1 stop

IAH13:30Houston George Bush Intcntl

£477

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Virgin Atlantic

2 Feb

IAH12:49Houston George Bush Intcntl

37h 21m

2 stops

LCY08:10London City

5 Feb

LCY07:45London City

35h 45m

1 stop

IAH13:30Houston George Bush Intcntl

£496

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Virgin Atlantic

13 Jan

IAH15:30Houston George Bush Intcntl

11h 20m

1 stop

LCY08:50London City

21 Jan

LCY17:05London City

26h 25m

1 stop

IAH13:30Houston George Bush Intcntl

£500

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Air Canada flights from Houston George Bush Intcntl Airport to London

Our best Air Canada deals on Houston George Bush Intcntl Airport to London flight tickets

Air Canada

7 Jan

IAH07:10Houston George Bush Intcntl

17h 20m

1 stop

LHR06:30London Heathrow

14 Jan

LHR06:50London Heathrow

20h 49m

2 stops

IAH21:39Houston George Bush Intcntl

£477

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Air Canada

14 Jan

IAH10:03Houston George Bush Intcntl

17h 17m

2 stops

LHR09:20London Heathrow

21 Jan

LHR09:00London Heathrow

18h 39m

2 stops

IAH21:39Houston George Bush Intcntl

£478

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Air Canada

13 Apr

IAH11:50Houston George Bush Intcntl

16h 10m

1 stop

LHR10:00London Heathrow

28 Apr

LHR08:45London Heathrow

17h 41m

2 stops

IAH20:26Houston George Bush Intcntl

£479

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HoustonLondon

IAH - LGW

IAHLGW

Houston George Bush Intcntl

mer 7/1

19:45-10:00

1 stop32h 15m

London Gatwick

sab 10/1

14:00-22:41

1 stop14h 41m

£476

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar 17/2

12:10-07:10

1 stop13h 00m

London Heathrow

mar 10/3

09:00-21:44

2 stops17h 44m

£477

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mer 7/1

07:10-06:30

1 stop17h 20m

London Heathrow

mer 14/1

06:50-21:39

2 stops20h 49m

£477

HoustonLondon

IAH - LGW

IAHLGW

Houston George Bush Intcntl

lun 26/1

06:00-07:30

2 stops19h 30m

London Gatwick

mar 3/2

11:20-23:59

2 stops18h 39m

£478

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mer 14/1

10:03-09:20

2 stops17h 17m

London Heathrow

mer 21/1

09:00-21:39

2 stops18h 39m

£478

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mer 7/1

19:05-10:15

Nonstop9h 10m

London Heathrow

mer 14/1

09:30-18:15

1 stop14h 45m

£480

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun 26/1

16:20-07:30

Nonstop9h 10m

London Heathrow

mer 4/2

09:30-18:15

1 stop14h 45m

£480

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar 28/4

16:20-07:40

Nonstop9h 20m

London Heathrow

lun 11/5

20:25-16:35

1 stop26h 10m

£482

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun 26/1

21:45-12:45

Nonstop9h 00m

London Heathrow

ven 6/2

09:35-14:05

Nonstop10h 30m

£484

HoustonLondon

IAH - LCY

IAHLCY

Houston George Bush Intcntl

mer 14/1

18:55-17:40

1 stop16h 45m

London City

mer 21/1

09:50-18:15

1 stop14h 25m

£501

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

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 cheapest month to fly to London?

The cheapest month to fly to London from Houston George Bush Intcntl Airport is in October. Flight prices, which tend to average around £507, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Houston George Bush Intcntl Airport averaging around £521.

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

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £549. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Houston George Bush Intcntl Airport to London for around £811.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £591. Flights at midday are often more expensive, with an average ticket price of £728.

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

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

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

You are more likely to see cheaper flights to London from Houston George Bush Intcntl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £621 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Houston George Bush Intcntl Airport for as low as £538 on momondo.

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

There are 4 cabin classes available to choose from on Houston George Bush Intcntl to London 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 flights?

No. A direct flight is the cheapest option for a flight between Houston George Bush Intcntl Airport to London.

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

As of November 2025, prices for Houston George Bush Intcntl Airport to London flights are approximately 1% cheaper when compared to flights at the same time last year.

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

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

Estimated return price

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

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

Best price found	£301
Fastest flight time	9h 00m
Direct flights	Every day
Airports in London	1 airport

The best one-way flight to London from Houston George Bush Intcntl Airport in the past 72 hours is £301. The best return flight deal from Houston George Bush Intcntl Airport to London found on momondo in the last 72 hours is £523.

The fastest flight from Houston George Bush Intcntl Airport to London takes 9h 00m

Direct flights go from Houston George Bush Intcntl Airport to London every day.

There is 1 airport near London: London Heathrow (LHR)

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How far is Houston George Bush Intcntl to London by plane?
A flight from Houston George Bush Intcntl to London will travel around 4832.8 mi. Typically, this will take 9h 00m by plane in normal conditions.
When did momondo last update prices for flights from Houston George Bush Intcntl Airport to London?
Prices for flights from Houston George Bush Intcntl Airport to London are refreshed on a daily basis.
How many operators does momondo search for flights from Houston George Bush Intcntl Airport to London?
As of November 2025, there are 4 operators available to choose from for flights from Houston George Bush Intcntl Airport to London.
How old do you have to be to fly from Houston George Bush Intcntl Airport to London?
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 George Bush Intcntl Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Houston George Bush Intcntl Airport to London?
Based on momondo bookings for flights between Houston George Bush Intcntl Airport and London, the leading plane model is Boeing 777, making up 45.09% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 19.56%, Boeing 787-10 Dreamliner with 14.09%, and Boeing 777-300ER with 8.46%.
What is the most popular airline from Houston George Bush Intcntl Airport to London?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Houston George Bush Intcntl Airport to London is British Airways (39% of total bookings). The next most popular airlines are Lufthansa (28%), Iberia (20%), and United Airlines (13%).

Best airlines flying from Houston George Bush Intcntl Airport to London

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to London with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom £400	Free Cancellation	Rating 7.4 9,028 reviews	Search United Airlines flights
Iberia	PriceFrom £439	Free Cancellation	Rating 7.0 3,027 reviews	Search Iberia flights
Lufthansa	PriceFrom £442	Free Cancellation	Rating 6.8 7,579 reviews	Search Lufthansa flights
British Airways	PriceFrom £461	Free Cancellation	Rating 6.7 7,533 reviews	Search British Airways flights

United Airlines Flights From Houston George Bush Intcntl Airport to London
United Airlines flight deals from Houston George Bush Intcntl Airport to London start from £400 round-trip. Over the 14 United Airlines flights for this route in a normal week, average airfare is usually £748 round-trip - but some users have found much cheaper deals with momondo.
Iberia Flights From Houston George Bush Intcntl Airport to London
Iberia (7.0/10 from 3,027 reviews) operates around 7 flights from Houston George Bush Intcntl Airport to London in any given week. The average Iberia airfare for this route is around £530, with deals from around £439 rare but found on momondo. Referenced prices are for round-trip Houston George Bush Intcntl Airport to London flight searches in the last 72 hours.

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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?

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?

Once all potential Houston to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Houston to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Houston George Bush Intcntl Airport to London from £286

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

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 cheapest month to fly to London?

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

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £591. Flights at midday are often more expensive, with an average ticket price of £728.

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

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

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

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

There are 4 cabin classes available to choose from on Houston George Bush Intcntl to London 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 flights?

No. A direct flight is the cheapest option for a flight between Houston George Bush Intcntl Airport to London.

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

As of November 2025, prices for Houston George Bush Intcntl Airport to London flights are approximately 1% cheaper when compared to flights at the same time last year.

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

Austrian Airlines, WestJet, and Virgin Atlantic are the most popular carriers operating from Houston George Bush Intcntl to London

Which airlines fly to London?

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 145 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 departing 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 that experiences the fewest delays on this flight route. Friday 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 fewest 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 George Bush Intcntl Airport to London on average per day?

18 flights are operational daily from Houston George Bush Intcntl Airport to London as of November 2025. The most popular departure time for this route is 16:00, with 57% of flights per day taking off in the afternoon.

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

The number of flights available between Houston George Bush Intcntl Airport and London is 129 per week as of November 2025. The most frequent departure day is Thu, with 17% of weekly flights leaving on this day.

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

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

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

Best price found

Fastest flight time

Direct flights

Airports in London

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

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

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

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

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

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

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

Best airlines flying from Houston George Bush Intcntl Airport to London

Compare and see reviews for airlines that fly from Houston George Bush Intcntl Airport to London with momondo

United Airlines Flights From Houston George Bush Intcntl Airport to London

Iberia Flights From Houston George Bush Intcntl Airport to London

Travelling 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 trip

We make it super easy to schedule, organise 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 the United Kingdom