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$362+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — LON
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Houston George Bush Intcntl to London are usually found in October or February, booked 35 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

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 abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$639
(Kiwi.com)

One-way from

$362
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$682

Good round-trip deal

$797 or less

Good one-way deal

$459 or less
Provider with most accurate pricing for Houston George Bush Intcntl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Houston George Bush Intcntl-London (LON) flights.
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From Houston George Bush Intcntl to London (LON)
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One-way flight from Houston George Bush Intcntl to London (LON)
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Highest demand for flights based on searches. 25% potential increase in price ($279 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Houston George Bush Intcntl to London (LON).
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Price to beat on a one-way flight from Houston George Bush Intcntl to London (LON).
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Find flight deals from George Bush Intcntl to London

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 abril 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/28. 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. 5/258:13 pmIAH - LGW
1 stop28h 42mMultiple Airlines
mar. 6/1710:00 amLGW - IAH
1 stop19h 39mMultiple Airlines
Deal found 4/28$639
This Gotogate deal was found by Cheapflights users on 4/29. 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. 9/210:00 amIAH - LHR
1 stop17h 35mMultiple Airlines
mié. 9/176:50 amLHR - IAH
2 stops18h 52mMultiple Airlines
Deal found 4/29$644
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/136:29 pmIAH - LHR
1 stop13h 56mIberia
mar. 5/207:10 pmLHR - IAH
2 stops31h 53mIberia
Deal found 4/29$645
This StudentUniverse deal was found by Cheapflights users on 4/29. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/52:29 pmIAH - LHR
1 stop12h 31mFinnair
mar. 8/126:10 pmLHR - IAH
2 stops29h 46mFinnair
Deal found 4/29$651
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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. 9/241:13 pmIAH - LHR
1 stop11h 37mBritish Airways
mié. 10/82:50 pmLHR - IAH
Nonstop10h 25mBritish Airways
Deal found 4/28$658
This United Airlines deal was found by Cheapflights users on 4/28. 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.
mié. 8/2710:00 amIAH - LHR
1 stop14h 30mUnited Airlines
jue. 9/47:25 amLHR - IAH
1 stop15h 10mUnited Airlines
Deal found 4/28$666
This Delta deal was found by Cheapflights users on 4/29. 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.
sáb. 9/206:25 pmIAH - LHR
1 stop32h 30mDelta
dom. 9/2810:55 amLHR - IAH
1 stop16h 41mDelta
Deal found 4/29$671
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/610:04 amIAH - LGW
2 stops16h 06mAmerican Airlines
mar. 1/2711:20 amLGW - IAH
2 stops18h 14mAmerican Airlines
Deal found 4/29$675
This lol.travel deal was found by Cheapflights users on 4/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/123:50 pmIAH - LHR
1 stop15h 55mVirgin Atlantic
mar. 5/276:15 amLHR - IAH
1 stop13h 20mVirgin Atlantic
Deal found 4/28$680
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:20 amIAH - LHR
2 stops20h 40mAir Canada
mar. 9/96:50 amLHR - IAH
2 stops17h 44mAir Canada
Deal found 4/28$683
This Flighttix deal was found by Cheapflights users on 4/28. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/128:10 pmIAH - LHR
Nonstop9h 25mLufthansa
mar. 5/277:25 amLHR - IAH
1 stop15h 00mLufthansa
Deal found 4/28$699
This Scandinavian Airlines deal was found by Cheapflights users on 4/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/164:00 pmIAH - LHR
2 stops19h 40mScandinavian Airlines
mar. 9/236:40 amLHR - IAH
2 stops22h 50mScandinavian Airlines
Deal found 4/28$705

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 abril 29, 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

dom. 5/25

8:13 pm-6:55 am

1 stop28h 42m

London Gatwick

mar. 6/17

10:00 am-11:39 pm

1 stop19h 39m

$639

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar. 9/2

10:00 am-9:35 am

1 stop17h 35m

London Heathrow

mié. 9/17

6:50 am-7:42 pm

2 stops18h 52m

$644

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar. 5/13

6:29 pm-2:25 pm

1 stop13h 56m

London Heathrow

mar. 5/20

7:10 pm-9:03 pm

2 stops31h 53m

$645

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mar. 8/5

2:29 pm-9:00 am

1 stop12h 31m

London Heathrow

mar. 8/12

6:10 pm-5:56 pm

2 stops29h 46m

$651

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 9/24

1:13 pm-6:50 am

1 stop11h 37m

London Heathrow

mié. 10/8

2:50 pm-7:15 pm

Nonstop10h 25m

$658

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 8/27

10:00 am-6:30 am

1 stop14h 30m

London Heathrow

mié. 9/3

7:25 am-4:35 pm

1 stop15h 10m

$666

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

sáb. 9/20

6:25 pm-8:55 am

1 stop32h 30m

London Heathrow

dom. 9/28

10:55 am-9:36 pm

1 stop16h 41m

$671

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun. 5/12

3:50 pm-1:45 pm

1 stop15h 55m

London Heathrow

mar. 5/27

6:15 am-1:35 pm

1 stop13h 20m

$680

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

mié. 8/27

7:20 am-10:00 am

2 stops20h 40m

London Heathrow

mar. 9/9

6:50 am-6:34 pm

2 stops17h 44m

$683

HoustonLondon

IAH - LHR

IAHLHR

Houston George Bush Intcntl

lun. 5/12

8:10 pm-11:35 am

Nonstop9h 25m

London Heathrow

mar. 5/27

7:25 am-4:25 pm

1 stop15h 00m

$699

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 55 results
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Houston George Bush Intcntl Airport-London flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Houston George Bush Intcntl Airport-London flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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
Airports
IAH

Check the IAH Depart tab on the airport website for current security wait times to plan your arrival efficiently.

Read more about IAHby Evie Carrick
LHR

The Heathrow Express is the fastest way to reach central London, connecting to Paddington Station for further travel options.

Read more about LHRby Ramsey Qubein
Our travel experts
Evie Carrick

Evie Carrick

Expert on IAH

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 April 25, 2025.

Booking 35 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, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of $661). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of $1,110). 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 abril 29, 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 18% versus a flight in the evening.

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 June 23, 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. Saturday evenings 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 abril 29, 2025.

The most flights from IAH to LON are scheduled on a Monday (22 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 abril 29, 2025.
To help decide which airline to fly from Houston to London, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    Iberia, at $645, was found to be the cheapest airline from Houston George Bush Intcntl Airport to London.Alternate airlines to your destination round-trip include Finnair and British Airways. These flights start at 20% 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 JetBlue. According to our data, you can fly for as low as $369. Users have also found prices from $393 and $394 on Air Canada and Iberia, respectively.

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

    When deciding which route to take from Houston George Bush Intcntl Airport to London consider Houston George Bush Intcntl - London Heathrow, Houston George Bush Intcntl - London Gatwick or Houston George Bush Intcntl - London City as they are the most popular.

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

    Consider American Airlines (70%), Aer Lingus (70%) or Finnair (70%) when booking your flight. These represent the most reliable airlines when flying from Houston George Bush Intcntl Airport to London.

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

    Looking at all options, your cheapest flight can be booked for $395. While the most popular route (Houston George Bush Intcntl - London Heathrow) can be booked for $642 on average our data indicates $2,495 when flying from Houston George Bush Intcntl Airport to London.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to London (average of $661). Flying from Houston George Bush Intcntl Airport to London in June is currently the most expensive (average of $1,110). 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

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Gatwick
Orpington
Watford
Croydon
Borehamwood
Folkestone
Ilford
Aylesbury
Sutton
Chelmsford
Brentwood

Browse thousands of different options on Cheapflights for your next trip

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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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$568Average$730FlexibilityNo cancel feeOn-time67%
IberiaCheapest$577Average$726FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$578Average$721FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$580Average$806FlexibilityNo cancel feeOn-time71%
FinnairCheapest$582Average$734FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$605Average$911FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$611Average$921FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$612Average$1,128FlexibilityNo cancel feeOn-time76%
DeltaCheapest$631Average$1,007FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$957Average$1,374FlexibilityNo cancel feeOn-time78%

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