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$361+ Cheap flights from George Bush Intcntl (IAH) to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LON
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to London are usually found in October or April, booked 33 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from George Bush Intcntl to London

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$687
(Air Canada)

One-way from

$361
(JetBlue)

Popular in

June

Cheapest in

October

Average price

$1,227

Good round-trip deal

$730 or less

Good one-way deal

$553 or less
From Houston George Bush Intcntl to London (LON)
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One-way flight from Houston George Bush Intcntl to London (LON)
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Highest demand for flights based on searches. 25% potential increase in price ($276 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Houston George Bush Intcntl to London (LON).
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Price to beat on a one-way flight from Houston George Bush Intcntl to London (LON).
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Find flight deals from George Bush Intcntl to London

Cheapest flights from George Bush Intcntl to London
Explore the most affordable flight options available from George Bush Intcntl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:20 amIAH - LHR
2 stops17h 10mAir Canada
Thu 8/148:30 amLHR - IAH
2 stops17h 06mAir Canada
Deal found 6/10$687
This Gotogate deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/112:00 pmIAH - LHR
2 stops26h 55mMultiple Airlines
Wed 9/176:50 amLHR - IAH
2 stops18h 52mMultiple Airlines
Deal found 6/9$688
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2911:02 amIAH - LHR
1 stop13h 53mBritish Airways
Fri 8/810:30 amLHR - IAH
1 stop13h 15mBritish Airways
Deal found 6/10$689
This Air France deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:15 pmIAH - LHR
1 stop11h 10mAir France
Sun 12/76:20 amLHR - IAH
1 stop13h 35mAir France
Deal found 6/10$690
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/117:15 amIAH - LGW
1 stop17h 40mMultiple Airlines
Sat 8/1610:00 amLGW - IAH
1 stop17h 00mMultiple Airlines
Deal found 6/10$690
This Cheapflightsfares deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:50 pmIAH - LHR
2 stops17h 50mLufthansa
Mon 9/157:10 pmLHR - IAH
2 stops24h 25mLufthansa
Deal found 6/10$692
This Virgin Atlantic deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/223:55 pmIAH - LHR
1 stop13h 15mVirgin Atlantic
Tue 7/2911:45 amLHR - IAH
2 stops17h 39mVirgin Atlantic
Deal found 6/10$693
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:05 pmIAH - LHR
Nonstop9h 10mUnited Airlines
Thu 12/1110:00 amLHR - IAH
Nonstop10h 45mUnited Airlines
Deal found 6/10$694
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/110:00 amIAH - STN
2 stops32h 10mMultiple Airlines
Wed 9/176:30 amSTN - IAH
2 stops19h 12mMultiple Airlines
Deal found 6/9$699
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/11:07 pmIAH - LHR
1 stop16h 03mDelta
Fri 8/226:15 amLHR - IAH
2 stops17h 19mDelta
Deal found 6/10$700
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/33:30 pmIAH - LCY
1 stop12h 00mVirgin Atlantic
Tue 8/197:05 pmLCY - IAH
1 stop24h 10mVirgin Atlantic
Deal found 6/11$705
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/63:30 pmIAH - LHR
Nonstop9h 10mAmerican Airlines
Tue 7/229:25 amLHR - IAH
Nonstop10h 15mAmerican Airlines
Deal found 6/10$706

Cheapflights Fare Finder

Customize your flight search to find flights from George Bush Intcntl to London 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to London that are best for you.

Fly from

George Bush Intcntl

Fly to

London

Route

Depart

Return

Price

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 8/5

7:20 am-6:30 am

2 stops17h 10m

London Heathrow

Thu 8/14

8:30 am-7:36 pm

2 stops17h 06m

$687

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/1

12:00 pm-8:55 pm

2 stops26h 55m

London Heathrow

Wed 9/17

6:50 am-7:42 pm

2 stops18h 52m

$688

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 7/29

11:02 am-6:55 am

1 stop13h 53m

London Heathrow

Fri 8/8

10:30 am-5:45 pm

1 stop13h 15m

$689

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/12

1:15 pm-6:25 am

1 stop11h 10m

London Heathrow

Sun 12/7

6:20 am-1:55 pm

1 stop13h 35m

$690

HoustonLondon

IAH - LGW

IAHLGW

Houston George Bush Intcntl

Mon 8/11

7:15 am-6:55 am

1 stop17h 40m

London Gatwick

Sat 8/16

10:00 am-9:00 pm

1 stop17h 00m

$690

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 9/2

6:50 pm-6:40 pm

2 stops17h 50m

London Heathrow

Mon 9/15

7:10 pm-1:35 pm

2 stops24h 25m

$692

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 7/22

3:55 pm-11:10 am

1 stop13h 15m

London Heathrow

Tue 7/29

11:45 am-11:24 pm

2 stops17h 39m

$693

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 11/13

7:05 pm-10:15 am

Nonstop9h 10m

London Heathrow

Thu 12/11

10:00 am-2:45 pm

Nonstop10h 45m

$694

HoustonLondon

IAH - STN

IAHSTN

Houston George Bush Intcntl

Mon 9/1

10:00 am-12:10 am

2 stops32h 10m

London Stansted

Wed 9/17

6:30 am-7:42 pm

2 stops19h 12m

$699

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Fri 8/1

1:07 pm-11:10 am

1 stop16h 03m

London Heathrow

Fri 8/22

6:15 am-5:34 pm

2 stops17h 19m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 59 results
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The best insider tips for Houston George Bush Intcntl Airport to London flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Houston George Bush Intcntl Airport to London trip
Airports
IAH

Check the IAH website for security wait times to ensure a smooth departure.

Read more about IAHby Evie Carrick
LHR

Take the Heathrow Express for the fastest route to central London from LHR.

Read more about LHRby Ramsey Qubein
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from George Bush Intcntl to London

Have a flexible travel schedule? Discover the best time to fly to London from George Bush Intcntl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Houston George Bush Intcntl Airport to London

How far ahead should I book a flight from Houston George Bush Intcntl Airport to London?

Use this chart to determine the optimal time to book a round-trip flight from George Bush Intcntl to London. Price data was last updated on June 9, 2025.

Booking 33 days in advance of your planned departure date is, on average, the best time to get cheap flights from Houston George Bush Intcntl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to London?

Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of $661). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of $1,108). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAH to LON?

Find hourly flight availability from George Bush Intcntl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Houston George Bush Intcntl Airport to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 13% versus a flight in the evening.

What is the cheapest day to fly from Houston George Bush Intcntl Airport to London?

Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to London. Price data was last updated on June 23, 2024.

Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to London flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Houston George Bush Intcntl Airport to London

Explore weekly flight availability from George Bush Intcntl to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from IAH to LON are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated June 12, 2025.
To help decide which airline to fly from Houston to London, see what other customers have to say about Delta, KLM and Austrian Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Houston George Bush Intcntl Airport to London round-trip?

    Air Canada, at $687, was found to be the cheapest airline from Houston George Bush Intcntl Airport to London.Alternate airlines to your destination round-trip include British Airways and Lufthansa. These flights start at 14% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Houston George Bush Intcntl Airport to London one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $361. Users have also found prices from $380 and $385 on Air Canada and British Airways, respectively.

  • What are the most popular routes from Houston George Bush Intcntl Airport to London?

    When deciding which route to take from Houston George Bush Intcntl Airport to London consider Houston George Bush Intcntl - London Heathrow, Houston George Bush Intcntl - London Gatwick or Houston George Bush Intcntl - London City as they are the most popular.

  • What are the most reliable airlines from Houston George Bush Intcntl Airport to London?

    Consider American Airlines (76%), Aer Lingus (76%) or Finnair (76%) when booking your flight. These represent the most reliable airlines when flying from Houston George Bush Intcntl Airport to London.

  • What are the cheapest flights from Houston George Bush Intcntl Airport to London?

    Looking at all options, your cheapest flight can be booked for $393. While the most popular route (Houston George Bush Intcntl - London Heathrow) can be booked for $618 on average our data indicates $3,205 when flying from Houston George Bush Intcntl Airport to London.

  • Can I find deals for flights from George Bush Intcntl to London that include hotel bookings?

    Yes. In addition to deals on George Bush Intcntl to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from George Bush Intcntl to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from George Bush Intcntl to London.

  • Can I find deals for business class flights from George Bush Intcntl to London?

    Yes. Cheapflights offers flight deals from George Bush Intcntl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to London?

    Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of $661). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of $1,108). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Sutton
Aylesbury
Chelmsford
Brentwood
Chichester
Wembley
Arundel

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Alternative routes for George Bush Intcntl to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from George Bush Intcntl to London

Discover the top 10 airlines that operate flights from George Bush Intcntl to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$574Average$735FlexibilityNo cancel feeOn-time67%
IberiaCheapest$579Average$740FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$580Average$780FlexibilityNo cancel feeOn-time71%
FinnairCheapest$582Average$739FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$582Average$819FlexibilityNo cancel feeOn-time72%
LufthansaCheapest$608Average$944FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$612Average$919FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$613Average$909FlexibilityNo cancel feeOn-time70%
DeltaCheapest$631Average$895FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$957Average$1,374FlexibilityNo cancel feeOn-time78%

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