Cheap flights from Houston George Bush Intcntl Airport to London from £277

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LON
3 Jan — 10 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 September, booked 16 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 4 December 2025.

Mon 15/1215:50IAH - LHR
Nonstop9h 00mBritish Airways
Thu 25/1215:25LHR - IAH
Nonstop10h 35mBritish Airways
Deal found 3/12£451
Wed 10/1216:45IAH - LHR
1 stop13h 20mBritish Airways
Fri 26/1209:35LHR - IAH
Nonstop10h 30mBritish Airways
Deal found 2/12£454
Tue 30/1215:30IAH - LHR
1 stop13h 15mDelta
Thu 15/106:20LHR - IAH
1 stop13h 35mDelta
Deal found 2/12£457
Tue 30/1215:30IAH - LHR
1 stop16h 20mDelta
Fri 16/106:30LHR - IAH
1 stop13h 00mDelta
Deal found 2/12£457
Tue 30/1215:30IAH - LHR
1 stop11h 30mDelta
Tue 13/106:30LHR - IAH
1 stop13h 00mDelta
Deal found 1/12£458
Mon 15/1212:35IAH - LHR
1 stop13h 15mMultiple Airlines
Thu 25/1206:20LHR - IAH
1 stop13h 35mMultiple Airlines
Deal found 2/12£460
Sun 28/1221:50IAH - LHR
Nonstop9h 00mBritish Airways
Tue 13/109:35LHR - IAH
Nonstop10h 30mBritish Airways
Deal found 1/12£460
Tue 30/1219:05IAH - LHR
Nonstop9h 10mUnited Airlines
Wed 14/113:25LHR - IAH
1 stop14h 14mUnited Airlines
Deal found 1/12£462
Tue 30/1207:30IAH - LHR
1 stop17h 10mUnited Airlines
Fri 9/110:00LHR - IAH
Nonstop10h 45mUnited Airlines
Deal found 2/12£463
Wed 10/1214:23IAH - LHR
1 stop13h 37mIberia
Fri 26/1211:45LHR - IAH
1 stop14h 49mIberia
Deal found 2/12£465
Wed 31/1211:55IAH - LHR
1 stop12h 00mAustrian Airlines
Sat 10/112:05LHR - IAH
Nonstop10h 45mAustrian Airlines
Deal found 1/12£466
Mon 8/1215:30IAH - LCY
1 stop19h 05mVirgin Atlantic
Wed 24/1218:55LCY - IAH
1 stop24h 35mVirgin Atlantic
Deal found 1/12£476

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 4 December 2025.

Round-trip from

£450

One-way from

£277

Popular in

June

Cheapest in

October

Average price

£724

Good round-trip deal

£523 or less

Good one-way deal

£298 or less
Lufthansa
  • Lufthansa
  • 8/4-14/4
  • 2 total stops
  • 31h 20m total
  • Houston to London
Austrian Airlines
  • Austrian Airlines
  • 23/3
  • 1 total stop
  • 12h 59m total
  • Houston to London
Highest demand for flights based on searches. 22% potential increase in price (£129 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Houston George Bush Intcntl to London (LON).
Price to beat on a one-way flight from Houston George Bush Intcntl to London (LON).

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 4 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 - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/2

16:06-21:40

2 stops23h 34m

London Heathrow

Mon 23/2

10:20-23:37

2 stops19h 17m

£451

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/2

16:06-18:30

2 stops20h 24m

London Heathrow

Sun 22/2

10:20-23:37

2 stops19h 17m

£451

HoustonLondon

IAH - LTN

IAHLTN

Houston George Bush Intcntl

Wed 18/2

12:10-11:45

2 stops17h 35m

London Luton

Mon 23/2

06:15-21:39

2 stops21h 24m

£453

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 1/4

15:30-06:40

Nonstop9h 10m

London Heathrow

Thu 30/4

09:30-13:45

Nonstop10h 15m

£456

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/2

19:05-10:15

Nonstop9h 10m

London Heathrow

Mon 23/2

07:40-16:30

1 stop14h 50m

£461

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 4/2

19:05-10:15

Nonstop9h 10m

London Heathrow

Sun 8/2

06:30-18:15

1 stop17h 45m

£468

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 31/12

06:27-07:05

1 stop18h 38m

London Heathrow

Wed 7/1

20:00-11:57

1 stop21h 57m

£472

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Thu 29/1

09:54-17:40

2 stops25h 46m

London Heathrow

Tue 3/2

06:40-23:37

2 stops22h 57m

£473

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 31/12

16:20-07:30

Nonstop9h 10m

London Heathrow

Sat 10/1

10:00-14:45

Nonstop10h 45m

£476

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 20/1

16:06-17:40

2 stops19h 34m

London Heathrow

Thu 29/1

07:05-23:56

3 stops22h 51m

£476

Flights are sorted by cheapest return flights first.

Deals found on 2/12

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 28 November 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 16 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 £175). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of £688). 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 4 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 4 December 2025.

The most flights from IAH to LON are scheduled on a Monday (18 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

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 145 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 Friday 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 4 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.

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Crew

8.1

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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. Scandinavian Airlines provides one of the quickest options available for as low as £456. 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 £304. Additional return tickets that might be worth considering are offered by United Airlines and Iberia, with the lowest prices starting at £393 and £431, 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 £279. Users have also found prices from £281 and £285 on Lufthansa and Iberia, respectively.

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

  • 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 £499 for a flight from Houston George Bush Intcntl Airport to London. The cheapest flight overall is £263 while the most popular route, (Houston George Bush Intcntl - London Heathrow) is currently priced at £394.

  • 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 £175). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of £688). 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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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 4 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£304Average£494FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£393Average£735FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£431Average£521FlexibilityNo cancel feeOn-time77%
Search Iberia flights
LufthansaCheapest£435Average£523FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£453Average£741FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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