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Cheap flights from London to Houston from $378

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Houston departing on 9/21. 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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Cheap round-trip flights

Multiple Airlines Logo
7:40 am - 9:17 pmLGW-IAH
43h 37m3 stops
Multiple Airlines Logo
9:02 am - 10:00 amIAH-LGW
18h 58m2 stops
$769Multiple Airlines
Find Deal
mié., oct. 8 - vie., oct. 10
Multiple Airlines Logo
1:30 pm - 1:39 pmLCY-IAH
30h 09m3 stops
Multiple Airlines Logo
6:00 am - 5:05 pmIAH-LCY
29h 05m2 stops
$769Multiple Airlines
Find Deal
mié., nov. 19 - mié., nov. 26
Scandinavian Airlines Logo
6:40 am - 11:56 pmLHR-IAH
23h 16m2 stops
Scandinavian Airlines Logo
4:00 pm - 5:40 pmIAH-LHR
19h 40m2 stops
$769Scandinavian Airlines
Find Deal
jue., nov. 20 - mié., dic. 10
Icelandair Logo
8:25 am - 1:40 pmLHR-IAH
35h 15m1 stop
Icelandair Logo
2:45 pm - 9:30 amIAH-LHR
36h 45m2 stops
$774Icelandair
Find Deal
vie., oct. 3 - mié., oct. 22
Icelandair Logo
8:25 am - 1:40 pmLHR-IAH
35h 15m1 stop
Icelandair Logo
2:45 pm - 9:30 amIAH-LHR
36h 45m2 stops
$775Icelandair
Find Deal
vie., oct. 3 - mié., oct. 22
Scandinavian Airlines Logo
6:40 am - 11:56 pmLHR-IAH
23h 16m2 stops
Scandinavian Airlines Logo
4:00 pm - 9:35 pmIAH-LHR
23h 35m3 stops
$809Scandinavian Airlines
Find Deal
jue., nov. 20 - mié., dic. 10
British Airways Logo
9:25 am - 1:40 pmLHR-IAH
10h 15mnonstop
British Airways Logo
9:00 pm - 12:20 pmIAH-LHR
9h 20mnonstop
$815British Airways
Find Deal
mar., sep. 30 - mar., oct. 14
British Airways Logo
9:20 am - 1:40 pmLHR-IAH
10h 20mnonstop
British Airways Logo
9:50 pm - 12:50 pmIAH-LHR
9h 00mnonstop
$816British Airways
Find Deal
sáb., oct. 4 - sáb., dic. 6
United Airlines Logo
6:35 am - 4:10 pmLHR-IAH
15h 35m1 stop
United Airlines Logo
5:05 pm - 10:50 amIAH-LHR
12h 45m1 stop
$824United Airlines
Find Deal
vie., mar. 6 - jue., mar. 12
United Airlines Logo
9:30 am - 5:50 pmLHR-IAH
14h 20m1 stop
United Airlines Logo
10:00 am - 6:30 amIAH-LHR
14h 30m1 stop
$825United Airlines
Find Deal
mié., oct. 8 - mié., oct. 22

Scandinavian Airlines flights from London to Houston George Bush Intcntl Airport

Our best Scandinavian Airlines deals on London to Houston George Bush Intcntl Airport flight tickets
Scandinavian Airlines
Nov 20
LHR6:40 amLondon Heathrow
23h 16m
2 stops
IAH11:56 pmHouston George Bush Intcntl
Dec 10
IAH4:00 pmHouston George Bush Intcntl
19h 40m
2 stops
LHR5:40 pmLondon Heathrow
$769
Find similar
Scandinavian Airlines
Nov 20
LHR6:40 amLondon Heathrow
23h 16m
2 stops
IAH11:56 pmHouston George Bush Intcntl
Dec 10
IAH4:00 pmHouston George Bush Intcntl
23h 35m
3 stops
LHR9:35 pmLondon Heathrow
$809
Find similar
Scandinavian Airlines
Nov 20
LHR7:05 amLondon Heathrow
22h 51m
3 stops
IAH11:56 pmHouston George Bush Intcntl
Dec 10
IAH4:00 pmHouston George Bush Intcntl
23h 35m
3 stops
LHR9:35 pmLondon Heathrow
$812
Find similar

Icelandair flights from London to Houston George Bush Intcntl Airport

Our best Icelandair deals on London to Houston George Bush Intcntl Airport flight tickets
Icelandair
Oct 3
LHR8:25 amLondon Heathrow
35h 15m
1 stop
IAH1:40 pmHouston George Bush Intcntl
Oct 22
IAH2:45 pmHouston George Bush Intcntl
36h 45m
2 stops
LHR9:30 amLondon Heathrow
$774
Find similar
Icelandair
Oct 3
LHR8:25 amLondon Heathrow
35h 15m
1 stop
IAH1:40 pmHouston George Bush Intcntl
Oct 22
IAH2:45 pmHouston George Bush Intcntl
36h 45m
2 stops
LHR9:30 amLondon Heathrow
$775
Find similar
Icelandair
Sep 30
LHR8:25 amLondon Heathrow
35h 15m
1 stop
IAH1:40 pmHouston George Bush Intcntl
Oct 14
IAH2:45 pmHouston George Bush Intcntl
33h 45m
1 stop
LHR6:30 amLondon Heathrow
$777
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London to Houston George Bush Intcntl 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 septiembre 16, 2025.
Use the filters below to find and compare flights from London to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonHouston

LGW - IAH

LGWIAH

London Gatwick

mié. 10/8

7:40 am-9:17 pm

3 stops43h 37m

Houston George Bush Intcntl

vie. 10/10

9:02 am-10:00 am

2 stops18h 58m

$769

LondonHouston

LCY - IAH

LCYIAH

London City

mié. 11/19

1:30 pm-1:39 pm

3 stops30h 09m

Houston George Bush Intcntl

mié. 11/26

6:00 am-5:05 pm

2 stops29h 05m

$769

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

jue. 11/20

6:40 am-11:56 pm

2 stops23h 16m

Houston George Bush Intcntl

mié. 12/10

4:00 pm-5:40 pm

2 stops19h 40m

$769

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

vie. 10/3

8:25 am-1:40 pm

1 stop35h 15m

Houston George Bush Intcntl

mié. 10/22

2:45 pm-9:30 am

2 stops36h 45m

$774

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

vie. 10/3

8:25 am-1:40 pm

1 stop35h 15m

Houston George Bush Intcntl

mié. 10/22

2:45 pm-9:30 am

2 stops36h 45m

$775

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

jue. 11/20

6:40 am-11:56 pm

2 stops23h 16m

Houston George Bush Intcntl

mié. 12/10

4:00 pm-9:35 pm

3 stops23h 35m

$809

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

mar. 9/30

9:25 am-1:40 pm

Nonstop10h 15m

Houston George Bush Intcntl

mar. 10/14

9:00 pm-12:20 pm

Nonstop9h 20m

$815

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

sáb. 10/4

9:20 am-1:40 pm

Nonstop10h 20m

Houston George Bush Intcntl

sáb. 12/6

9:50 pm-12:50 pm

Nonstop9h 00m

$816

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

vie. 3/6

6:35 am-4:10 pm

1 stop15h 35m

Houston George Bush Intcntl

jue. 3/12

5:05 pm-10:50 am

1 stop12h 45m

$824

LondonHouston

LHR - IAH

LHRIAH

London Heathrow

mié. 10/8

9:30 am-5:50 pm

1 stop14h 20m

Houston George Bush Intcntl

mié. 10/22

10:00 am-6:30 am

1 stop14h 30m

$825

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 Houston from

How to get the cheapest flight ticket from London to Houston George Bush Intcntl 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 typical price of a round-trip flight between London and Houston George Bush Intcntl Airport?

What is the cheapest month to fly to Houston George Bush Intcntl Airport?

The month of March is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from London, with most prices found around $817. If you are unable to visit Houston George Bush Intcntl Airport during the month of March, then departing from London during the month January is also very affordable. Most momondo users find prices during this month for around $822.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from London to Houston George Bush Intcntl Airport is on a Sunday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Sunday will often find tickets for as low as $950. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Friday is $1,078.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest London to Houston George Bush Intcntl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Houston George Bush Intcntl Airport in the afternoon for as low as $785. Try not to purchase tickets at noon because they tend to be around $1,011. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Houston George Bush Intcntl Airport?

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around $984 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from London for as low as $873 on momondo.

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

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

You could potentially save up to 15% on your flight if you consider stops on a London to Houston George Bush Intcntl Airport flight.

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

As of September 2025, prices for London to Houston George Bush Intcntl Airport flights are approximately 61% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$806

Fastest flight time

10h 15m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from London in the past 72 hours is $806. The best round-trip flight deal from London to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $912.
The fastest flight from London to Houston George Bush Intcntl Airport takes 10h 15m
Direct flights go from London to Houston George Bush Intcntl Airport every day.
Search flight deals

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

    The straight-line distance from London to Houston George Bush Intcntl is 4832.8 mi. Typically, this will take 10h 15m by plane in normal conditions.

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

    Prices for flights from London to Houston George Bush Intcntl Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The travel and health documents you'll need for your trip to Houston George Bush Intcntl 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 Houston George Bush Intcntl 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 London to Houston George Bush Intcntl Airport?

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

Best airlines flying from London to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from London to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $759Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
British AirwaysPriceFrom $768Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
Austrian AirlinesPriceFrom $803Free CancellationRating
7.6
850 reviews
Search Austrian Airlines flights
LufthansaPriceFrom $830Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
IberiaPriceFrom $982Free CancellationRating
7.0
2,924 reviews
Search Iberia flights

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

    Across 14 Austrian Airlines flights from London to Houston George Bush Intcntl Airport this week, the average price was $1,274, with the best Austrian Airlines deals starting from $803 round-trip. 850 users have rated Austrian Airlines on momondo, with an average score of 7.6/10.

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

    Another popular option for London to Houston George Bush Intcntl Airport flights is United Airlines (7.4/10, 8,924 ratings). United Airlines flies from London to Houston George Bush Intcntl Airport around 14 times per week, with deals starting from $759 round-trip and rising to an average price of around $1,165.

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
The Woodlands
Katy
Conroe
Humble
Cypress
Spring
Montgomery
Tomball
Livingston
Jersey Village

Why use momondo?

Why should I use momondo to find a flight deal from London to Houston?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Houston from London.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Houston from London.

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

Yes. momondo can track prices for London to Houston 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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