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 144 minutes.

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. Sunday has historically seen more delays on average compared to the rest of the week.

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 49% of people opting to fly with this airline when travelling to London. Keep in mind that there are 5 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

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

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.

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

As of January 2026, there are 5 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.

£277 Cheap Flights from Houston George Bush Intcntl Airport to London in 2026

Q: 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 124 per week as of January 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

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15:50 - 06:50

IAH

LHR

9h 00mdirect

09:35 - 14:05

LHR

IAH

10h 30mdirect

£467British Airways

Fri, 13 Feb - Wed, 18 Feb

08:44 - 10:00

IAH

LGW

19h 16m1 stop

21:45 - 23:51

LGW

IAH

32h 06m2 stops

£467Multiple Airlines

Thu, 2 Apr - Thu, 16 Apr

22:50 - 12:50

IAH

LHR

9h 00mdirect

14:45 - 23:52

LHR

IAH

14h 07m1 stop

£468British Airways

Thu, 19 Mar - Wed, 25 Mar

11:15 - 10:00

IAH

LGW

17h 45m1 stop

14:00 - 10:18

LGW

IAH

26h 18m1 stop

£468Multiple Airlines

Fri, 27 Mar - Fri, 10 Apr

21:55 - 17:40

IAH

LCY

38h 45m2 stops

09:50 - 19:15

LCY

IAH

14h 25m1 stop

£469Lufthansa

Sat, 14 Mar - Tue, 17 Mar

18:53 - 06:25

IAH

LHR

30h 32m1 stop

15:20 - 13:35

LHR

IAH

28h 15m1 stop

£469Delta

Sat, 14 Mar - Mon, 6 Apr

16:20 - 07:30

IAH

LHR

9h 10mdirect

06:00 - 21:44

LHR

IAH

21h 44m2 stops

£469Austrian Airlines

Thu, 19 Feb - Thu, 26 Feb

19:05 - 10:15

IAH

LHR

9h 10mdirect

06:30 - 18:15

LHR

IAH

17h 45m1 stop

£470United Airlines

Wed, 21 Jan - Tue, 27 Jan

17:20 - 07:30

IAH

LHR

9h 10mdirect

06:35 - 17:30

LHR

IAH

15h 55m1 stop

£471United Airlines

Tue, 17 Mar - Thu, 19 Mar

18:55 - 17:40

IAH

LCY

16h 45m1 stop

09:50 - 19:15

LCY

IAH

14h 25m1 stop

£475Lufthansa

Wed, 4 Mar - Tue, 10 Mar

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

18 Jan

IAH12:49Houston George Bush Intcntl

14h 31m

1 stop

LHR09:20London Heathrow

3 Feb

LHR06:30London Heathrow

17h 10m

2 stops

IAH17:40Houston George Bush Intcntl

£474

Find similar

Virgin Atlantic

5 Feb

IAH15:03Houston George Bush Intcntl

11h 42m

1 stop

LHR08:45London Heathrow

9 Feb

LHR20:25London Heathrow

23h 05m

1 stop

IAH13:30Houston George Bush Intcntl

£477

Find similar

Virgin Atlantic

1 Feb

IAH15:30Houston George Bush Intcntl

19h 05m

1 stop

LCY16:35London City

16 Feb

LCY17:50London City

25h 40m

1 stop

IAH13:30Houston George Bush Intcntl

£479

Find similar

British Airways flights from Houston George Bush Intcntl Airport to London

Our best British Airways deals on Houston George Bush Intcntl Airport to London flight tickets

British Airways

13 Feb

IAH15:50Houston George Bush Intcntl

9h 00m

LHR06:50London Heathrow

18 Feb

LHR09:35London Heathrow

10h 30m

IAH14:05Houston George Bush Intcntl

£467

Find similar

British Airways

19 Mar

IAH22:50Houston George Bush Intcntl

9h 00m

LHR12:50London Heathrow

25 Mar

LHR14:45London Heathrow

14h 07m

1 stop

IAH23:52Houston George Bush Intcntl

£468

Find similar

British Airways

21 Jan

IAH15:50Houston George Bush Intcntl

9h 00m

LHR06:50London Heathrow

4 Feb

LHR09:35London Heathrow

10h 30m

IAH14:05Houston George Bush Intcntl

£469

Find similar

momondo Fare Finder

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

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Route

Depart

Return

Price

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Fri 13/2

15:50-06:50

Nonstop9h 00m

London Heathrow

Wed 18/2

09:35-14:05

Nonstop10h 30m

£467

HoustonLondon

IAH - LGW

IAHLGW

Houston George Bush Intcntl

Thu 2/4

08:44-10:00

1 stop19h 16m

London Gatwick

Thu 16/4

21:45-23:51

2 stops32h 06m

£467

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 19/3

22:50-12:50

Nonstop9h 00m

London Heathrow

Wed 25/3

14:45-23:52

1 stop14h 07m

£468

HoustonLondon

IAH - LGW

IAHLGW

Houston George Bush Intcntl

Fri 27/3

11:15-10:00

1 stop17h 45m

London Gatwick

Fri 10/4

14:00-10:18

1 stop26h 18m

£468

HoustonLondon

IAH - LCY

IAHLCY

Houston George Bush Intcntl

Sat 14/3

21:55-17:40

2 stops38h 45m

London City

Tue 17/3

09:50-19:15

1 stop14h 25m

£469

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sat 14/3

18:53-06:25

1 stop30h 32m

London Heathrow

Mon 6/4

15:20-13:35

1 stop28h 15m

£469

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 19/2

16:20-07:30

Nonstop9h 10m

London Heathrow

Thu 26/2

06:00-21:44

2 stops21h 44m

£469

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 21/1

19:05-10:15

Nonstop9h 10m

London Heathrow

Tue 27/1

06:30-18:15

1 stop17h 45m

£470

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 17/3

17:20-07:30

Nonstop9h 10m

London Heathrow

Thu 19/3

06:35-17:30

1 stop15h 55m

£471

HoustonLondon

IAH - LCY

IAHLCY

Houston George Bush Intcntl

Wed 4/3

18:55-17:40

1 stop16h 45m

London City

Tue 10/3

09:50-19:15

1 stop14h 25m

£475

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Showing 1-10 of 20 resultsSorted by cheapest first

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 £491, 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 £494.

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 £561. Flights in the evening are often more expensive, with an average ticket price of £667.

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 £606 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 £556 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 January 2026, prices for Houston George Bush Intcntl Airport to London flights are approximately 68% more expensive 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	£326
Fastest flight time	9h 00m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Houston George Bush Intcntl Airport in the past 72 hours is £326. The best return flight deal from Houston George Bush Intcntl Airport to London found on momondo in the last 72 hours is £480.

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 are 6 airports in London. From Houston George Bush Intcntl Airport there are direct flights to London Heathrow (LHR).

Search flight deals

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 January 2026, there are 5 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 56.77% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 13.53%, Boeing 787-8 Dreamliner with 9.57%, and Boeing 787-9 Dreamliner with 8.06%.
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 (44% of total bookings). The next most popular airlines are Iberia (20%), Lufthansa (20%), and United Airlines (16%).

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
Virgin Atlantic	PriceFrom £300	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Iberia	PriceFrom £425	Free Cancellation	Rating 7.0 3,076 reviews	Search Iberia flights
United Airlines	PriceFrom £426	Free Cancellation	Rating 7.4 9,138 reviews	Search United Airlines flights
Lufthansa	PriceFrom £429	Free Cancellation	Rating 6.8 7,692 reviews	Search Lufthansa flights
British Airways	PriceFrom £446	Free Cancellation	Rating 6.7 7,657 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 £426 round-trip. Over the 14 United Airlines flights for this route in a normal week, average airfare is usually £728 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 3,076 reviews) operates around 8 flights from Houston George Bush Intcntl Airport to London in any given week. The average Iberia airfare for this route is around £513, with deals from around £425 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 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?

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 £277

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Find the cheapest flights from Houston George Bush Intcntl Airport to London

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Virgin Atlantic flights from Houston George Bush Intcntl Airport to London

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Our best British Airways deals on Houston George Bush Intcntl Airport to London flight tickets

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

See travel insights to London from

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

What is the cheapest month to fly 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 £561. Flights in the evening are often more expensive, with an average ticket price of £667.

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 January 2026, prices for Houston George Bush Intcntl Airport to London flights are approximately 68% 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?

British Airways, Delta, and JetBlue 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 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 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. 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 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?

17 flights are operational daily from Houston George Bush Intcntl Airport to London as of January 2026. The most popular departure time for this route is 16:00, with 58% 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 124 per week as of January 2026. The most frequent departure day is Mon, with 18% 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

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London