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Cheap flights from Houston George Bush Intcntl Airport to London Heathrow Airport from £230

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LHR
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Houston George Bush Intcntl to London Heathrow are usually found in October or September, booked 63 days in advance, depart on a Tuesday or Monday 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 4 November 2025.

Tue 18/1112:35IAH - LHR
1 stop11h 50mVirgin Atlantic
Tue 25/1115:50LHR - IAH
1 stop14h 07mVirgin Atlantic
Deal found 4/11£425
Sun 23/1114:24IAH - LHR
1 stop12h 11mFinnair
Tue 9/1209:35LHR - IAH
Nonstop10h 30mFinnair
Deal found 2/11£426
Mon 24/1114:24IAH - LHR
1 stop13h 36mFinnair
Tue 9/1209:35LHR - IAH
Nonstop10h 30mFinnair
Deal found 3/11£428
Sun 30/1112:10IAH - LHR
1 stop14h 25mIberia
Tue 23/1209:35LHR - IAH
Nonstop10h 30mIberia
Deal found 4/11£429
Mon 24/1112:35IAH - LHR
1 stop14h 25mVirgin Atlantic
Tue 9/1206:30LHR - IAH
1 stop13h 00mVirgin Atlantic
Deal found 3/11£432
Sun 23/1107:10IAH - LHR
1 stop19h 20mAir Canada
Tue 9/1206:50LHR - IAH
2 stops20h 49mAir Canada
Deal found 2/11£433
Sun 23/1116:05IAH - LHR
1 stop15h 40mVirgin Atlantic
Tue 9/1206:30LHR - IAH
1 stop13h 00mVirgin Atlantic
Deal found 2/11£434
Sun 23/1106:45IAH - LHR
1 stop18h 20mDelta
Tue 9/1206:20LHR - IAH
1 stop13h 35mDelta
Deal found 2/11£436
Wed 5/1118:09IAH - LHR
1 stop11h 31mMultiple Airlines
Thu 13/1106:20LHR - IAH
1 stop13h 35mMultiple Airlines
Deal found 3/11£438

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 4 November 2025.

Round-trip from

£426

One-way from

£230

Popular in

June

Cheapest in

October

Average price

£558

Good round-trip deal

£520 or less

Good one-way deal

£300 or less
Finnair
  • Finnair
  • 23/11-9/12
  • 1 total stop
  • 22h 41m total
  • Houston to London
Search Deals
10/1
  • 10/1
  • 3 total stops
  • 32h 35m total
  • Houston to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 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 4 November 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

Tue 2/12

12:35-07:50

1 stop13h 15m

London Heathrow

Thu 11/12

06:30-13:30

1 stop13h 00m

£442

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sun 30/11

16:32-10:00

1 stop11h 28m

London Heathrow

Tue 23/12

09:55-17:30

1 stop13h 35m

£448

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 4/3

09:54-07:50

1 stop15h 56m

London Heathrow

Tue 10/3

06:20-14:55

1 stop13h 35m

£448

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 26/11

18:40-11:40

1 stop11h 00m

London Heathrow

Tue 2/12

08:55-17:44

1 stop14h 49m

£454

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Tue 9/12

16:00-21:40

2 stops23h 40m

London Heathrow

Mon 12/1

06:40-23:39

2 stops22h 59m

£456

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 11/2

15:03-08:45

1 stop11h 42m

London Heathrow

Mon 23/2

19:20-13:55

1 stop24h 35m

£457

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 9/2

05:25-07:50

1 stop20h 25m

London Heathrow

Mon 16/2

14:45-13:55

1 stop29h 10m

£457

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Wed 26/11

12:30-07:10

1 stop12h 40m

London Heathrow

Tue 2/12

12:05-21:39

2 stops39h 34m

£460

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Mon 1/12

12:59-10:30

2 stops15h 31m

London Heathrow

Tue 16/12

08:55-22:23

2 stops19h 28m

£464

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

Sat 22/11

18:05-06:40

1 stop30h 35m

London Heathrow

Wed 3/12

18:00-21:44

1 stop33h 44m

£480

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 21 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 31 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 £387). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of £697). 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 4 November 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 31% 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 4 November 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
8,996 reviews
Check prices

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

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
United Airlines
7.4
Good
8,996 reviews
United Airlines
7.4
Good
8,996 reviews
Check prices

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

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
Iberia
7.0
Good
3,006 reviews
United Airlines
7.4
Good
8,996 reviews
Check prices

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

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
Lufthansa
6.8
Okay
7,544 reviews
United Airlines
7.4
Good
8,996 reviews
Check prices

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

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
British Airways
6.7
Okay
7,494 reviews
United Airlines
7.4
Good
8,996 reviews
Check prices

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

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 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 £442, Delta can have you in London Heathrow Airport from Houston George Bush Intcntl Airport in 13h 15m. Houston George Bush Intcntl Airport and London Heathrow Airport are separated by a distance of 4820 mi.

  • 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 £397 on this airline. Additional options worth looking into are Iberia and Lufthansa, starting at £436 and £440 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 (85%), Aer Lingus (85%) or Finnair (85%) 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 £632, our data shows the cheapest flight currently is £255. When looking at the most popular route, (Houston George Bush Intcntl - London Heathrow), you can expect to pay £435 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 £387). Flying from Houston George Bush Intcntl Airport to London Heathrow Airport in June is currently the most expensive (average of £697). 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
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

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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 4 November 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£397Average£744FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IberiaCheapest£436Average£527FlexibilityNo cancel feeOn-time77%
Search Iberia flights
LufthansaCheapest£440Average£536FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£458Average£706FlexibilityNo 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 Heathrow?

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Why should you use Cheapflights to find cheap flight tickets from George Bush Intcntl to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from George Bush Intcntl to Heathrow.

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

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?

Not ready to book yet? You can track prices for flights from George Bush Intcntl to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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