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Cheap flights from Houston George Bush Intcntl Airport to London Heathrow Airport from £246

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 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LHR
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Houston George Bush Intcntl to London Heathrow are usually found in September or October, booked 63 days in advance, depart on a Tuesday or Sunday and return on a Wednesday

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Cheapest flights from George Bush Intcntl to Heathrow
Explore the most affordable flight options available from George Bush Intcntl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Sun 26/1016:21IAH - LHR
1 stop11h 39mVirgin Atlantic
Tue 11/1112:30LHR - IAH
1 stop14h 41mVirgin Atlantic
Deal found 15/10£407
Sun 26/1017:25IAH - LHR
1 stop37h 25mAir Canada
Tue 11/1106:50LHR - IAH
2 stops20h 49mAir Canada
Deal found 15/10£420
Sun 26/1013:29IAH - LHR
1 stop13h 21mDelta
Tue 11/1106:20LHR - IAH
1 stop13h 35mDelta
Deal found 15/10£430
Mon 27/1022:45IAH - LHR
Nonstop9h 00mBritish Airways
Wed 19/1109:35LHR - IAH
Nonstop10h 30mBritish Airways
Deal found 16/10£430
Wed 12/1115:09IAH - LHR
1 stop11h 36mMultiple Airlines
Wed 19/1106:20LHR - IAH
1 stop13h 35mMultiple Airlines
Deal found 15/10£431
Tue 11/1111:50IAH - LHR
1 stop13h 20mMultiple Airlines
Tue 25/1106:50LHR - IAH
2 stops20h 49mMultiple Airlines
Deal found 15/10£432

Cheap flight deals from George Bush Intcntl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) to Heathrow (LHR). 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 17 October 2025.

Round-trip from

£407

One-way from

£246

Popular in

June

Cheapest in

September

Average price

£504

Good round-trip deal

£470 or less

Good one-way deal

£268 or less
Lufthansa
  • Lufthansa
  • 31/3-2/4
  • 3 total stops
  • 54h 05m total
  • Houston to London
Search Deals
23/10
  • 23/10
  • 3 total stops
  • 27h 23m total
  • Houston to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£119 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Houston George Bush Intcntl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Houston George Bush Intcntl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from George Bush Intcntl to Heathrow 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 17 October 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

George Bush Intcntl

Fly to

Heathrow

Route

Depart

Return

Price

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 12/11

15:09-08:45

1 stop11h 36m

London Heathrow

Wed 19/11

06:20-13:55

1 stop13h 35m

£433

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 19/11

12:30-06:20

1 stop11h 50m

London Heathrow

Mon 24/11

20:25-13:30

1 stop23h 05m

£434

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 4/3

12:55-10:15

1 stop15h 20m

London Heathrow

Tue 10/3

06:20-14:55

1 stop13h 35m

£439

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 30/11

16:32-10:00

1 stop11h 28m

London Heathrow

Tue 23/12

08:20-15:40

1 stop13h 20m

£439

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 12/11

17:00-11:40

1 stop12h 40m

London Heathrow

Wed 19/11

09:00-23:57

2 stops20h 57m

£441

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 19/1

07:15-07:50

1 stop18h 35m

London Heathrow

Thu 29/1

08:55-23:59

2 stops21h 04m

£446

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/2

07:15-07:50

1 stop18h 35m

London Heathrow

Mon 16/2

17:35-13:55

1 stop26h 20m

£448

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/2

07:15-07:50

1 stop18h 35m

London Heathrow

Mon 23/2

17:35-13:55

1 stop26h 20m

£449

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 1/3

16:20-07:30

Nonstop9h 10m

London Heathrow

Tue 31/3

07:25-16:35

1 stop15h 10m

£459

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 8/3

22:50-12:50

Nonstop9h 00m

London Heathrow

Thu 19/3

15:25-21:00

Nonstop10h 35m

£463

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Showing 1-10 of 22 results
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Best time to book a flight from George Bush Intcntl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from George Bush Intcntl to Heathrow. Price data was last updated on 10 October 2025.

The best time to book flights from Houston George Bush Intcntl Airport to London Heathrow Airport is 18 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London Heathrow Airport (average of £379). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of £681). 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 LHR?

Find hourly flight availability from George Bush Intcntl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

It’s typically best to fly out from Houston George Bush Intcntl Airport to London Heathrow Airport at midday. Doing so could potentially save you 30% on the flight price compared to flying in the evening, which is usually more expensive.

How much does it cost for a return flight from Houston George Bush Intcntl Airport to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 17 October 2025.
See what other customers who have flown with United Airlines, Iberia, andLufthansa from Houston George Bush Intcntl Airport to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,983 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,983 reviews
United Airlines
7.4
Good
8,983 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Iberia
7.0
Good
2,994 reviews
United Airlines
7.4
Good
8,983 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
Lufthansa
6.8
Okay
7,498 reviews
United Airlines
7.4
Good
8,983 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
British Airways
6.7
Okay
7,459 reviews
United Airlines
7.4
Good
8,983 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Tim,Sept 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Heathrow. 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 Heathrow Airport?

    For as low as £434, Virgin Atlantic can have you in London Heathrow Airport from Houston George Bush Intcntl Airport in 11h 50m. Houston George Bush Intcntl Airport and London Heathrow Airport are separated by 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 Heathrow Airport round-trip?

    Our cheapest airline available from Houston George Bush Intcntl Airport to London Heathrow Airport is United Airlines. Our recent data shows that you can find tickets from as low as £389 on this airline. Additional options worth looking into are Iberia and Lufthansa, starting at £427 and £430 round-trip. These flights start at 35% lower than the current average price 3 months from now.

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

    Consider American Airlines (88%), Aer Lingus (88%) or Finnair (88%) when booking your flight. These represent the most reliable airlines when flying from Houston George Bush Intcntl Airport to London Heathrow Airport.

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

    While on average a flight from Houston George Bush Intcntl Airport to London Heathrow Airport is generally £608, our data shows the cheapest flight currently is £182. When looking at the most popular route, (Houston George Bush Intcntl - London Heathrow), you can expect to pay £430 for that flight.

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

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

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

    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 Heathrow.

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

    Yes. Cheapflights offers flight deals from George Bush Intcntl to Heathrow 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 Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London Heathrow Airport (average of £379). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of £681). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Wembley
Deal
Ilford
Crawley
Hayes
Watford
Winchester
Swindon
Chichester
Romford
Ipswich
Brentford
Dartford

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Alternative routes for George Bush Intcntl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Heathrow flights
Hobby to Gatwick flights
George Bush Intcntl to Gatwick flights
George Bush Intcntl to Stansted flights
George Bush Intcntl to Luton flights

Top 4 airlines flying from George Bush Intcntl to Heathrow

Discover the top 4 airlines that operate flights from George Bush Intcntl to Heathrow. 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£389Average£706FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£427Average£515FlexibilityNo cancel feeOn-time77%
Search Iberia flights
LufthansaCheapest£430Average£525FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£448Average£687FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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Certainly. Search results for flights to Heathrow from George Bush Intcntl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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