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Cheap flights from Houston George Bush Intcntl Airport to London from £279

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LON
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Houston George Bush Intcntl to London are usually found in October or August, booked 85 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from George Bush Intcntl to London

Enter your travel dates to find the best prices.

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 21 December 2025.

Tue 30/1211:55IAH - LHR
1 stop12h 00mLufthansa
Fri 9/107:25LHR - IAH
1 stop17h 36mLufthansa
Deal found 20/12£504
Mon 29/1218:40IAH - LHR
1 stop29h 15mMultiple Airlines
Fri 9/118:00LHR - IAH
1 stop33h 44mMultiple Airlines
Deal found 19/12£522
Tue 30/1219:05IAH - LHR
Nonstop9h 10mUnited Airlines
Fri 9/111:10LHR - IAH
1 stop16h 34mUnited Airlines
Deal found 19/12£527
Tue 30/1212:10IAH - LHR
2 stops26h 25mAir Canada
Fri 9/111:10LHR - IAH
1 stop16h 34mAir Canada
Deal found 19/12£529
Mon 29/1206:40IAH - LHR
1 stop21h 00mUnited Airlines
Fri 9/109:00LHR - IAH
2 stops18h 44mUnited Airlines
Deal found 19/12£530
Mon 29/1207:42IAH - LHR
1 stop20h 18mDelta
Fri 9/113:05LHR - IAH
2 stops16h 51mDelta
Deal found 19/12£536
Mon 29/1216:20IAH - LHR
Nonstop9h 10mAustrian Airlines
Fri 9/108:00LHR - IAH
1 stop18h 46mAustrian Airlines
Deal found 20/12£543
Mon 29/1218:40IAH - LHR
1 stop29h 15mLufthansa
Fri 9/112:50LHR - IAH
2 stops32h 41mLufthansa
Deal found 19/12£548
Mon 29/1217:05IAH - LHR
1 stop30h 50mLufthansa
Thu 8/115:30LHR - IAH
2 stops29h 10mLufthansa
Deal found 19/12£551
Mon 29/1215:55IAH - LCY
2 stops34h 50mSWISS
Thu 8/117:40LCY - IAH
2 stops27h 00mSWISS
Deal found 19/12£557
Mon 29/1215:55IAH - LGW
2 stops43h 55mSWISS
Thu 8/118:40LGW - IAH
2 stops26h 00mSWISS
Deal found 19/12£568
Wed 31/1212:20IAH - LCY
2 stops15h 05mSWISS
Thu 8/117:40LCY - IAH
2 stops27h 00mSWISS
Deal found 19/12£577

Find 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 21 December 2025.

Round-trip from

£455

One-way from

£279

Popular in

June

Cheapest in

October

Average price

£728

Good round-trip deal

£484 or less

Good one-way deal

£314 or less
Lufthansa
  • Lufthansa
  • 21/4-29/4
  • 2 total stops
  • 30h 15m total
  • Houston to London
Search Deals
17/2
  • 17/2
  • 2 total stops
  • 18h 45m total
  • Houston to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£129 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Houston George Bush Intcntl to London (LON).
Search Deals
Price to beat on a one-way flight from Houston George Bush Intcntl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 21 December 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 - LGW

IAHLGW

Houston George Bush Intcntl

Sat 17/1

05:46-10:05

2 stops22h 19m

London Gatwick

Sat 24/1

14:00-23:34

1 stop15h 34m

£457

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 11/1

05:15-08:45

1 stop21h 30m

London Heathrow

Tue 27/1

06:30-13:30

1 stop13h 00m

£465

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 4/3

19:05-10:15

Nonstop9h 10m

London Heathrow

Tue 10/3

07:30-19:15

1 stop16h 45m

£472

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 13/4

17:25-13:20

1 stop37h 55m

London Heathrow

Wed 29/4

06:55-16:35

1 stop15h 40m

£476

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 29/3

16:20-07:40

Nonstop9h 20m

London Heathrow

Tue 7/4

06:55-16:35

1 stop15h 40m

£476

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 14/1

10:33-06:25

1 stop13h 52m

London Heathrow

Mon 26/1

14:45-13:55

1 stop29h 10m

£482

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 11/1

16:50-10:00

1 stop11h 10m

London Heathrow

Tue 27/1

09:35-14:05

Nonstop10h 30m

£485

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 4/1

12:50-09:40

1 stop14h 50m

London Heathrow

Tue 20/1

10:00-14:45

Nonstop10h 45m

£485

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 22/3

17:20-07:30

Nonstop9h 10m

London Heathrow

Tue 31/3

10:00-14:25

Nonstop10h 25m

£485

HoustonLondon

IAH - LCY

IAHLCY

Houston George Bush Intcntl

Tue 10/2

16:25-17:20

2 stops18h 55m

London City

Thu 12/2

17:05-13:30

1 stop26h 25m

£486

Flights are sorted by cheapest return flights first.

Deals found on 21/12

Showing 1-10 of 60 results
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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 return 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 return flight from George Bush Intcntl to London. Price data was last updated on 12 December 2025.

The price you pay for your flight from Houston George Bush Intcntl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of £380). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of £679). 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 21 December 2025.

It’s optimal to fly from Houston George Bush Intcntl Airport to London at midday. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the evening.

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 21 December 2025.

The most flights from IAH to LON are scheduled on a Saturday (22 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

What’s the top stopover airport for flights from Houston George Bush Intcntl Airport to London?

Share of one-stop return flights from Houston George Bush Intcntl Airport to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Boston (BOS) – chosen by Cheapflights users on 75% of one-stop itineraries from Houston George Bush Intcntl Airport to London on Cheapflights.

What’s the cheapest stopover airport for flights from Houston George Bush Intcntl Airport to London?

Average return fare for one-stop flights from Houston George Bush Intcntl Airport to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £479.

What’s the fastest stopover option from Houston George Bush Intcntl Airport to London?

Shortest average travel time for one-stop one-way flights from Houston George Bush Intcntl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Boston (BOS) have the shortest average one-way travel time for one-stop routes: 12h 38m.

Which airport typically offers the quickest stopover for flights from Houston George Bush Intcntl Airport to London?

Average stopover duration for one-stop one-way flights from Houston George Bush Intcntl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Montreal (YUL) offer the fastest connection on this route, with an average stopover time of 6h 15m.

How often are flights from Houston to London delayed?

About 27% of weekly flights between Houston and London have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for Houston to London flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Houston to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 19% of flights being delayed.

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 21 December 2025.
Read through reviews of airlines operating flights from Houston George Bush Intcntl Airport to London, such as United Airlines, Iberia, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,100 reviews
Check prices

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,100 reviews
United Airlines
7.4
Good
9,100 reviews
Check prices

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Iberia
7.0
Good
3,055 reviews
United Airlines
7.4
Good
9,100 reviews
Check prices

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Lufthansa
6.8
Okay
7,639 reviews
United Airlines
7.4
Good
9,100 reviews
Check prices

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
British Airways
6.7
Okay
7,600 reviews
United Airlines
7.4
Good
9,100 reviews
Check prices

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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.

  • How long is the flight from Houston George Bush Intcntl Airport to London?

    A quick flight from Houston George Bush Intcntl Airport to London can take about 9h 10m. Delta provides one of the quickest options available for as low as £472. Airlines will cover a distance of 4820 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Flying on Virgin Atlantic is currently your cheapest option to London, with prices starting at £302. Additional return tickets that might be worth considering are offered by Iberia and United Airlines, with the lowest prices starting at £428 and £430, respectively. These flights start at 49% 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 British Airways. According to our data, you can fly for as low as £277. Users have also found prices from £279 and £283 on Lufthansa and Iberia, respectively.

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

    The most popular flight routes from Houston George Bush Intcntl Airport to London are Houston George Bush Intcntl - London Heathrow, Houston George Bush Intcntl - London Gatwick and Houston George Bush Intcntl - London City.

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

    Before booking your flight to London from Houston George Bush Intcntl Airport, check out the most reliable airlines to get you to your destination on time: American Airlines (73%), Aer Lingus (73%), Finnair( 73%).

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

    On average you can expect to pay £520 for a flight from Houston George Bush Intcntl Airport to London. The cheapest flight overall is £271 while the most popular route, (Houston George Bush Intcntl - London Heathrow) is currently priced at £414.

  • 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 holiday 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, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of £380). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of £679). 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

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Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from George Bush Intcntl to London

Discover the top 5 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 858,174 searches. Data last updated 21 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£302Average£482FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£428Average£517FlexibilityNo cancel feeOn-time77%
Search Iberia flights
United AirlinesCheapest£430Average£734FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£432Average£519FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£450Average£721FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from George Bush Intcntl to London?

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Can Cheapflights find flights from George Bush Intcntl to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from George Bush Intcntl to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from George Bush Intcntl to London become cheaper?

Yes! Start tracking prices for George Bush Intcntl to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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