Check the IAH website for security wait times to ensure a smooth departure.
$371+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LON
dic. 31 — ene. 71
1 adult, Economy
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Find cheap flights from George Bush Intcntl to London with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 Wednesday or Sunday and return on a Thursday
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 diciembre 1, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $604 (Air Canada) |
One-way from | $371 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $962 |
Good round-trip deal | $690 or less |
Good one-way deal | $401 or less |
Find flight deals from George Bush Intcntl to London
Cheapest flights from George Bush Intcntl to LondonExplore 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 diciembre 1, 2025.
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 diciembre 1, 2025.
This Delta deal was found by Cheapflights users on 12/1. 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.
mar. 12/303:30 pmIAH - LHR
1 stop11h 30mDelta
mié. 1/1411:45 amLHR - IAH
1 stop31h 45mDelta
Deal found 12/1![Delta logo]()
$609
This British Airways deal was found by Cheapflights users on 12/1. 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.
dom. 12/289:50 pmIAH - LHR
Nonstop9h 00mBritish Airways
mar. 1/139:35 amLHR - IAH
Nonstop10h 30mBritish Airways
Deal found 12/1![British Airways logo]()
$612
This United Airlines deal was found by Cheapflights users on 12/1. 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.
mar. 12/307:05 pmIAH - LHR
Nonstop9h 10mUnited Airlines
mar. 1/131:25 pmLHR - IAH
1 stop14h 14mUnited Airlines
Deal found 12/1![United Airlines logo]()
$614
This United Airlines deal was found by Cheapflights users on 12/1. 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.
mar. 12/307:05 pmIAH - LHR
Nonstop9h 10mUnited Airlines
vie. 1/911:10 amLHR - IAH
1 stop16h 34mUnited Airlines
Deal found 12/1![United Airlines logo]()
$618
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
mié. 12/3111:55 amIAH - LHR
1 stop12h 00mAustrian Airlines
sáb. 1/1012:05 pmLHR - IAH
Nonstop10h 45mAustrian Airlines
Deal found 12/1![Austrian Airlines logo]()
$619
This Gotogate deal was found by Cheapflights users on 11/30. 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.
mar. 12/912:10 pmIAH - LHR
1 stop13h 00mMultiple Airlines
dom. 12/141:25 pmLHR - IAH
1 stop14h 14mMultiple Airlines
Deal found 11/30![Multiple Airlines logo]()
$621
This United Airlines deal was found by Cheapflights users on 11/30. 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.
lun. 12/87:05 pmIAH - LHR
Nonstop9h 10mUnited Airlines
mar. 12/2312:05 pmLHR - IAH
Nonstop10h 45mUnited Airlines
Deal found 11/30![United Airlines logo]()
$622
This Kiwi.com deal was found by Cheapflights users on 11/30. 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.
dom. 12/148:01 amIAH - LGW
1 stop19h 59mMultiple Airlines
vie. 1/92:00 pmLGW - IAH
1 stop26h 01mMultiple Airlines
Deal found 11/30![Multiple Airlines logo]()
$622
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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.
dom. 12/75:59 pmIAH - LHR
1 stop11h 41mBritish Airways
dom. 1/189:35 amLHR - IAH
Nonstop10h 30mBritish Airways
Deal found 11/30![British Airways logo]()
$623
This Mytrip deal was found by Cheapflights users on 11/30. 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.
lun. 12/812:10 pmIAH - STN
2 stops26h 45mMultiple Airlines
mié. 12/177:40 amSTN - IAH
2 stops19h 59mMultiple Airlines
Deal found 11/30![Multiple Airlines logo]()
$623
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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.
mié. 12/101:28 pmIAH - LHR
1 stop12h 22mBritish Airways
lun. 12/153:25 pmLHR - IAH
Nonstop10h 35mBritish Airways
Deal found 11/30![British Airways logo]()
$624
This Cheapflightsfares deal was found by Cheapflights users on 11/30. 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.
mar. 12/303:50 pmIAH - LHR
Nonstop9h 00mBritish Airways
vie. 1/239:35 amLHR - IAH
Nonstop10h 30mBritish Airways
Deal found 11/30![British Airways logo]()
$625
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 diciembre 1, 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
dom. 3/1
4:20 pm-7:30 am
Nonstop9h 10m
London Heathrow
dom. 3/8
7:30 am-6:15 pm
1 stop16h 45m
$622
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
dom. 2/15
4:20 pm-7:30 am
Nonstop9h 10m
London Heathrow
sáb. 2/21
4:40 pm-4:30 pm
1 stop29h 50m
$623
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
lun. 1/26
9:54 am-4:25 pm
3 stops24h 31m
London Heathrow
mar. 2/3
6:40 am-11:37 pm
2 stops22h 57m
$633
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
mar. 2/3
4:06 pm-9:35 pm
3 stops23h 29m
London Heathrow
mié. 2/11
6:40 am-11:37 pm
2 stops22h 57m
$633
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
mié. 2/11
4:06 pm-9:35 pm
3 stops23h 29m
London Heathrow
dom. 2/22
10:20 am-11:37 pm
2 stops19h 17m
$633
HoustonLondon
IAH - LTN
IAHLTN
Houston George Bush Intcntl
dom. 3/8
7:10 am-7:55 pm
3 stops31h 45m
London Luton
dom. 3/15
8:50 pm-3:10 pm
2 stops23h 20m
$639
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
jue. 1/8
6:36 am-7:05 am
1 stop18h 29m
London Heathrow
lun. 1/12
8:25 pm-1:30 pm
1 stop23h 05m
$639
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
mié. 1/21
3:50 pm-6:50 am
Nonstop9h 00m
London Heathrow
lun. 1/26
3:25 pm-8:00 pm
Nonstop10h 35m
$640
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
vie. 1/30
3:50 pm-6:50 am
Nonstop9h 00m
London Heathrow
vie. 2/6
9:35 am-2:05 pm
Nonstop10h 30m
$640
HoustonLondon
IAH - LHR
IAHLHR
Houston George Bush Intcntl
mié. 1/21
3:50 pm-6:50 am
Nonstop9h 00m
London Heathrow
sáb. 1/31
9:35 am-2:05 pm
Nonstop10h 30m
$640
Showing 1-10 of 60 results
Compare providers for flights from George Bush Intcntl to London
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from George Bush Intcntl to London in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-London flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Houston George Bush Intcntl Airport-London flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Houston George Bush Intcntl Airport-London flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Houston George Bush Intcntl Airport-London flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Houston George Bush Intcntl Airport-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 November 28, 2025.
Booking 16 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, October is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of $233). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of $914). 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 diciembre 1, 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 23% versus a flight in the afternoon.
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 December 16, 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. Sunday at noon 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 diciembre 1, 2025.
The most flights from IAH to LON are scheduled on a Monday (22 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).
What’s the top layover airport for flights from Houston George Bush Intcntl Airport to London?
Share of 1-stop round-trip flights from Houston George Bush Intcntl Airport to London chosen by Cheapflights users in the past 12 months, using the same layover each way.
Miami (MIA) – chosen by Cheapflights users on 33% of 1-stop itineraries from Houston George Bush Intcntl Airport to London on Cheapflights.
What’s the cheapest layover airport for flights from Houston George Bush Intcntl Airport to London?
Average round-trip fare for 1-stop flights from Houston George Bush Intcntl Airport to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Miami (MIA) is the most affordable 1-stop option, with an average round-trip price of $765.
What’s the fastest layover option from Houston George Bush Intcntl Airport to London?
Shortest average travel time for 1-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 layover airport.
Flights via Miami (MIA) have the shortest average one-way travel time for 1-stop routes: 12h 22m.
Which airport typically offers the quickest layover for flights from Houston George Bush Intcntl Airport to London?
Average layover duration for 1-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 Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 8h 58m.
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 last year, British Airways have had the lowest number of delays on this route, with just 19% of flights being delayed.
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
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 diciembre 1, 2025.
Read reviews from past customers who have flown Finnair, United Airlines, and American Airlines from Houston George Bush Intcntl Airport to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
Comfort
7.4
Food
6.7
Crew
8.1
Entertainment
6.9
Boarding
7.6
Overall
7.6
Reviews
1 / 20
2.0
MediocreRowland,Dec 2024
HEL - HKG
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.
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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.
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 diciembre 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$783 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$521 | Average$741 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$551 | Average$739 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$559 | Average$883 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$567 | Average$903 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$579 | Average$782 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$582 | Average$744 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$587 | Average$874 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$607 | Average$895 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$722 | Average$994 | FlexibilityNo cancel fee | On-time76% |