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Cheap flights from Houston George Bush Intcntl Airport to London from £180

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 George Bush Intcntl Airport to London departing on 20/9. 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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Find the cheapest flights from Houston George Bush Intcntl Airport to London (IAH-LHR)

Cheap return flights

British Airways Logo
15:50 - 06:50IAH-LHR
9h 00mdirect
British Airways Logo
09:35 - 14:05LHR-IAH
10h 30mdirect
£385British Airways
Find Deal
Tue, 18 Nov - Wed, 26 Nov
British Airways Logo
21:00 - 12:20IAH-LHR
9h 20mdirect
British Airways Logo
09:25 - 13:45LHR-IAH
10h 20mdirect
£386British Airways
Find Deal
Tue, 7 Oct - Tue, 14 Oct
Delta Logo
11:30 - 07:15IAH-LHR
13h 45m1 stop
Delta Logo
06:15 - 13:35LHR-IAH
13h 20m1 stop
£387Delta
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Sun, 5 Oct - Tue, 14 Oct
Virgin Atlantic Logo
16:04 - 13:30IAH-LHR
15h 26m1 stop
Virgin Atlantic Logo
06:15 - 13:35LHR-IAH
13h 20m1 stop
£388Virgin Atlantic
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Tue, 2 Sep - Tue, 9 Sep
Delta Logo
11:36 - 07:15IAH-LHR
13h 39m1 stop
Delta Logo
06:30 - 13:15LHR-IAH
12h 45m1 stop
£388Delta
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Sun, 14 Sep - Fri, 26 Sep
British Airways Logo
21:00 - 12:20IAH-LHR
9h 20mdirect
British Airways Logo
14:50 - 19:15LHR-IAH
10h 25mdirect
£389British Airways
Find Deal
Tue, 2 Sep - Wed, 10 Sep
Virgin Atlantic Logo
11:05 - 06:20IAH-LHR
13h 15m2 stops
Virgin Atlantic Logo
06:15 - 13:35LHR-IAH
13h 20m1 stop
£391Virgin Atlantic
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Tue, 2 Sep - Tue, 16 Sep
Iberia Logo
10:55 - 07:20IAH-LHR
14h 25m1 stop
Iberia Logo
13:40 - 23:56LHR-IAH
16h 16m1 stop
£393Iberia
Find Deal
Mon, 1 Sep - Wed, 24 Sep
Iberia Logo
12:08 - 06:25IAH-LHR
12h 17m1 stop
Iberia Logo
09:35 - 14:05LHR-IAH
10h 30mdirect
£394Iberia
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Wed, 8 Oct - Tue, 23 Dec
Logo
16:00 - 08:55IAH-LHR
10h 55m1 stop
Logo
06:15 - 13:35LHR-IAH
13h 20m1 stop
£420
Find Deal
Thu, 4 Sep - Thu, 11 Sep

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
18 Nov
IAH15:50Houston George Bush Intcntl
9h 00m
LHR06:50London Heathrow
26 Nov
LHR09:35London Heathrow
10h 30m
IAH14:05Houston George Bush Intcntl
£385
Find similar
British Airways
7 Oct
IAH21:00Houston George Bush Intcntl
9h 20m
LHR12:20London Heathrow
14 Oct
LHR09:25London Heathrow
10h 20m
IAH13:45Houston George Bush Intcntl
£386
Find similar
British Airways
2 Sept
IAH21:00Houston George Bush Intcntl
9h 20m
LHR12:20London Heathrow
18 Sept
LHR14:50London Heathrow
10h 25m
IAH19:15Houston George Bush Intcntl
£388
Find similar

Finnair flights from Houston George Bush Intcntl Airport to London Heathrow Airport

Our best Finnair deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets
Finnair
2 Sept
IAH14:32Houston George Bush Intcntl
17h 53m
1 stop
LHR14:25London Heathrow
16 Sept
LHR08:20London Heathrow
15h 53m
1 stop
IAH18:13Houston George Bush Intcntl
£400
Find similar
Finnair
10 Nov
IAH21:45Houston George Bush Intcntl
9h 00m
LHR12:45London Heathrow
16 Nov
LHR09:35London Heathrow
10h 30m
IAH14:05Houston George Bush Intcntl
£421
Find similar
Finnair
8 Oct
IAH14:25Houston George Bush Intcntl
18h 00m
1 stop
LHR14:25London Heathrow
13 Oct
LHR09:25London Heathrow
10h 20m
IAH13:45Houston George Bush Intcntl
£424
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momondo Fare Finder

 
Customise your flight search to find flights from Houston George Bush Intcntl Airport to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 22 August 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport 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

Tue 18/11

15:50-06:50

Nonstop9h 00m

London Heathrow

Wed 26/11

09:35-14:05

Nonstop10h 30m

£385

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 7/10

21:00-12:20

Nonstop9h 20m

London Heathrow

Tue 14/10

09:25-13:45

Nonstop10h 20m

£386

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 5/10

11:30-07:15

1 stop13h 45m

London Heathrow

Tue 14/10

06:15-13:35

1 stop13h 20m

£387

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 2/9

16:04-13:30

1 stop15h 26m

London Heathrow

Tue 9/9

06:15-13:35

1 stop13h 20m

£388

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 14/9

11:36-07:15

1 stop13h 39m

London Heathrow

Fri 26/9

06:30-13:15

1 stop12h 45m

£388

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 2/9

21:00-12:20

Nonstop9h 20m

London Heathrow

Wed 10/9

14:50-19:15

Nonstop10h 25m

£389

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 2/9

11:05-06:20

2 stops13h 15m

London Heathrow

Tue 16/9

06:15-13:35

1 stop13h 20m

£391

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 1/9

10:55-07:20

1 stop14h 25m

London Heathrow

Wed 24/9

13:40-23:56

1 stop16h 16m

£393

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 8/10

12:08-06:25

1 stop12h 17m

London Heathrow

Tue 23/12

09:35-14:05

Nonstop10h 30m

£394

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 4/9

16:00-08:55

1 stop10h 55m

London Heathrow

Thu 11/9

06:15-13:35

1 stop13h 20m

£420

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

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 Heathrow Airport?

In general, October is the cheapest month to fly from Houston George Bush Intcntl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £501. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Houston George Bush Intcntl Airport averaging around £502.

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

On average, the least expensive day to fly to London Heathrow Airport from Houston George Bush Intcntl Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £498. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £859.

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 morning. momondo users have found flights departing from Houston George Bush Intcntl Airport to London Heathrow Airport in the morning for as low as £558. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £631 on average. Flights to London Heathrow Airport from Houston George Bush Intcntl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £597 when searching weeks before you fly. 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 £532 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 14% 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 August 2025, prices for Houston George Bush Intcntl Airport to London Heathrow Airport flights are approximately 35% cheaper 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 return 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

£292

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 £292. The best return flight deal from Houston George Bush Intcntl Airport to London Heathrow Airport found on momondo in the last 72 hours is £391.
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.
Search flight deals

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

    A flight from Houston George Bush Intcntl to London Heathrow will travel around 4820.4 mi. A reasonable flight in good conditions will take 9h 00m.

  • 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?

  • How old do you have to be to fly from Houston George Bush Intcntl Airport 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 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 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.

  • 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
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £301Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
United AirlinesPriceFrom £388Free CancellationRating
7.4
8,934 reviews
Search United Airlines flights
British AirwaysPriceFrom £448Free CancellationRating
6.7
7,292 reviews
Search British Airways flights
IberiaPriceFrom £452Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
LufthansaPriceFrom £454Free CancellationRating
6.8
7,350 reviews
Search Lufthansa flights

  • United Airlines Flights From Houston George Bush Intcntl Airport to London Heathrow Airport

    United Airlines operates around 14 flights from Houston George Bush Intcntl Airport to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been £910, but momondo users have found United Airlines deals from Houston George Bush Intcntl Airport to London Heathrow Airport from as low as £522 round-trip. United Airlines has been scored 7.4/10 in 8,934 reviews.

  • Iberia Flights From Houston George Bush Intcntl Airport to London Heathrow Airport

    Across 2,884 Iberia reviews on momondo, the average score is 7.0/10. Iberia flies from Houston George Bush Intcntl Airport to London Heathrow Airport about 6 times each week, with ticket deals ranging from £607 to £690. Price data is based on momondo 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?

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

All flight searches from Houston to London on momondo can be filtered to show those which offer flexible booking policies.

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.

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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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