Cheap flights from Houston George Bush Intcntl Airport to London from $247

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 11/6. 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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Multiple Airlines Logo
5:25 pm - 11:50 amIAH-LHR
36h 25m1 stop
Multiple Airlines Logo
6:50 am - 9:39 pmLHR-IAH
20h 49m2 stops
$522Multiple Airlines
Find Deal
Mon, Dec 1 - Thu, Dec 4
Virgin Atlantic Logo
12:37 pm - 9:15 amIAH-LHR
14h 38m1 stop
Virgin Atlantic Logo
6:30 am - 1:30 pmLHR-IAH
13h 00m1 stop
$534Virgin Atlantic
Find Deal
Mon, Oct 20 - Tue, Nov 4
Air Canada Logo
5:25 pm - 11:50 amIAH-LHR
36h 25m1 stop
Air Canada Logo
6:50 am - 9:39 pmLHR-IAH
19h 49m2 stops
$551Air Canada
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Sat, Mar 7 - Tue, Mar 10
Iberia Logo
9:50 pm - 12:50 pmIAH-LHR
9h 00mnonstop
Iberia Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$552Iberia
Find Deal
Sun, Nov 30 - Tue, Dec 23
Iberia Logo
9:50 pm - 12:50 pmIAH-LHR
9h 00mnonstop
Iberia Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$554Iberia
Find Deal
Sun, Nov 30 - Tue, Dec 23
Air Canada Logo
6:10 pm - 7:10 amIAH-LHR
32h 00m2 stops
Air Canada Logo
6:50 am - 9:39 pmLHR-IAH
19h 49m2 stops
$557Air Canada
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Mon, Mar 9 - Thu, Mar 12
British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$609British Airways
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Mon, Oct 20 - Tue, Nov 4
United Airlines Logo
5:25 pm - 11:50 amIAH-LHR
36h 25m1 stop
United Airlines Logo
6:35 am - 4:10 pmLHR-IAH
15h 35m1 stop
$613United Airlines
Find Deal
Tue, Nov 4 - Thu, Nov 13
United Airlines Logo
4:20 pm - 7:30 amIAH-LHR
9h 10mnonstop
United Airlines Logo
6:35 am - 5:10 pmLHR-IAH
15h 35m1 stop
$621United Airlines
Find Deal
Wed, Mar 4 - Thu, Mar 12
British Airways Logo
3:30 pm - 6:40 amIAH-LHR
9h 10mnonstop
British Airways Logo
9:35 am - 2:05 pmLHR-IAH
10h 30mnonstop
$626British Airways
Find Deal
Sun, Oct 19 - Tue, Nov 4

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

Our best Iberia deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets
Iberia
Nov 30
IAH9:50 pmHouston George Bush Intcntl
9h 00m
LHR12:50 pmLondon Heathrow
Dec 23
LHR9:35 amLondon Heathrow
10h 30m
IAH2:05 pmHouston George Bush Intcntl
Iberia
Nov 30
IAH9:50 pmHouston George Bush Intcntl
9h 00m
LHR12:50 pmLondon Heathrow
Dec 23
LHR9:35 amLondon Heathrow
10h 30m
IAH2:05 pmHouston George Bush Intcntl
Iberia
Nov 30
IAH10:43 amHouston George Bush Intcntl
14h 07m
1 stop
LHR6:50 amLondon Heathrow
Dec 23
LHR9:35 amLondon Heathrow
10h 30m
IAH2:05 pmHouston George Bush Intcntl

Austrian Airlines flights from Houston George Bush Intcntl Airport to London Heathrow Airport

Our best Austrian Airlines deals on Houston George Bush Intcntl Airport to London Heathrow Airport flight tickets
Austrian Airlines
Dec 1
IAH11:55 amHouston George Bush Intcntl
37h 15m
2 stops
LHR7:10 amLondon Heathrow
Dec 4
LHR6:00 amLondon Heathrow
21h 44m
2 stops
IAH9:44 pmHouston George Bush Intcntl
Austrian Airlines
Oct 16
IAH12:00 pmHouston George Bush Intcntl
36h 55m
2 stops
LHR6:55 amLondon Heathrow
Oct 20
LHR7:30 pmLondon Heathrow
30h 14m
2 stops
IAH7:44 pmHouston George Bush Intcntl

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 7, 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

Mon 12/1

5:25 pm-11:50 am

1 stop36h 25m

London Heathrow

Thu 12/4

6:50 am-9:39 pm

2 stops20h 49m

$522

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 10/20

12:37 pm-9:15 am

1 stop14h 38m

London Heathrow

Tue 11/4

6:30 am-1:30 pm

1 stop13h 00m

$534

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sat 3/7

5:25 pm-11:50 am

1 stop36h 25m

London Heathrow

Tue 3/10

6:50 am-9:39 pm

2 stops19h 49m

$551

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 11/30

9:50 pm-12:50 pm

Nonstop9h 00m

London Heathrow

Tue 12/23

9:35 am-2:05 pm

Nonstop10h 30m

$552

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 11/30

9:50 pm-12:50 pm

Nonstop9h 00m

London Heathrow

Tue 12/23

9:35 am-2:05 pm

Nonstop10h 30m

$554

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 3/9

6:10 pm-7:10 am

2 stops32h 00m

London Heathrow

Thu 3/12

6:50 am-9:39 pm

2 stops19h 49m

$557

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 10/20

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

Tue 11/4

9:35 am-2:05 pm

Nonstop10h 30m

$609

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 11/4

5:25 pm-11:50 am

1 stop36h 25m

London Heathrow

Thu 11/13

6:35 am-4:10 pm

1 stop15h 35m

$613

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 3/4

4:20 pm-7:30 am

Nonstop9h 10m

London Heathrow

Thu 3/12

6:35 am-5:10 pm

1 stop15h 35m

$621

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 10/19

3:30 pm-6:40 am

Nonstop9h 10m

London Heathrow

Tue 11/4

9:35 am-2:05 pm

Nonstop10h 30m

$626

Flights are sorted by cheapest round-trip 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?

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Houston George Bush Intcntl Airport, with most prices found around $668. If you’re not able to fly to London Heathrow Airport in October, then September is your next best option. Flight prices from Houston George Bush Intcntl Airport to London Heathrow Airport during September average around $677.

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 George Bush Intcntl Airport 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 $989.

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 $811 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 George Bush Intcntl Airport for as low as $700 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?

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

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

As of October 2025, prices for Houston George Bush Intcntl Airport to London Heathrow Airport flights are approximately 16% 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 round-trip 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

$461

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 $461. The best round-trip flight deal from Houston George Bush Intcntl Airport to London Heathrow Airport found on momondo in the last 72 hours is $671.
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.
  • How far is Houston George Bush Intcntl to London Heathrow by plane?

    The distance between Houston George Bush Intcntl and London Heathrow is about 4820.4 mi. 9h 00m is a normal flight duration for this route.

  • 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?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • 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
JetBluePriceFrom $101Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
British AirwaysPriceFrom $569Free CancellationRating
6.7
7,430 reviews
Search British Airways flights
American AirlinesPriceFrom $572Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
United AirlinesPriceFrom $575Free CancellationRating
7.4
8,955 reviews
Search United Airlines flights
IberiaPriceFrom $580Free CancellationRating
7.0
2,973 reviews
Search Iberia flights
FinnairPriceFrom $582Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
Virgin AtlanticPriceFrom $582Free CancellationRating
7.4
665 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $631Free CancellationRating
7.9
7,966 reviews
Search Delta flights
Austrian AirlinesPriceFrom $644Free CancellationRating
7.6
852 reviews
Search Austrian Airlines flights
Air CanadaPriceFrom $660Free CancellationRating
7.1
10,245 reviews
Search Air Canada flights
  • Finnair Flights From Houston George Bush Intcntl Airport to London Heathrow Airport

    Finnair is one of the most popular airlines flying from Houston George Bush Intcntl Airport to London Heathrow Airport, operating 6 flights/week on average for this route. A good Finnair flight deal for Houston George Bush Intcntl Airport to London Heathrow Airport starts from $582 round-trip, up to an average price of $739. Our users have rated Finnair at 7.6/10.

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

    Across 852 Austrian Airlines reviews on momondo, the average score is 7.6/10. Austrian Airlines flies from Houston George Bush Intcntl Airport to London Heathrow Airport about 14 times each week, with ticket deals ranging from $644 to $1,303. 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?

Yes. momondo allows you to filter the results for Houston to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Houston and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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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Thu 11/6
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