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$586+ Cheap flights from London (LON) to Chicago (CHI)

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 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CHI
Jul 20 — Jul 271
Mon 7/20
Mon 7/27
1 adult, Economy
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Find cheap flights from London to Chicago with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from London to Chicago are usually found in February or November, booked 42 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from London to Chicago

Cheapest flights from London to Chicago
Explore the most affordable flight options available from London to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.

This Expedia deal was found by Cheapflights users on 6/18. 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.
Thu 6/256:30 am
LHR
-
ORD
1 stop12h 25m
Lufthansa
Sat 9/122:32 pm
ORD
-
LHR
1 stop13h 08m
Lufthansa
Deal found 6/18$758
This Mytrip deal was found by Cheapflights users on 6/15. 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.
Fri 9/258:30 am
LTN
-
ORD
2 stops18h 55m
Multiple Airlines
Sun 9/2710:25 pm
ORD
-
LTN
2 stops17h 55m
Multiple Airlines
Deal found 6/15$758
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Sat 9/512:00 pm
STN
-
ORD
2 stops35h 50m
Multiple Airlines
Fri 9/253:45 pm
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Deal found 6/20$758
This Mytrip deal was found by Cheapflights users on 6/20. 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.
Sat 9/125:00 pm
LGW
-
ORD
2 stops34h 20m
Multiple Airlines
Thu 9/177:25 pm
ORD
-
LGW
1 stop13h 15m
Multiple Airlines
Deal found 6/20$759
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Wed 9/237:30 am
LHR
-
ORD
1 stop13h 25m
United Airlines
Wed 9/306:05 pm
ORD
-
LHR
Nonstop8h 25m
United Airlines
Deal found 6/16$759
This Mytrip deal was found by Cheapflights users on 6/16. 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.
Tue 7/219:40 am
LTN
-
ORD
2 stops18h 25m
Multiple Airlines
Mon 9/217:25 pm
ORD
-
LTN
2 stops15h 45m
Multiple Airlines
Deal found 6/16$759
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Thu 10/86:55 pm
STN
-
ORD
2 stops28h 55m
Multiple Airlines
Tue 10/133:45 pm
ORD
-
STN
1 stop10h 05m
Multiple Airlines
Deal found 6/20$759
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Mon 9/288:40 am
LGW
-
ORD
2 stops18h 55m
Multiple Airlines
Fri 10/210:25 pm
ORD
-
LGW
1 stop10h 15m
Multiple Airlines
Deal found 6/17$760
This The Travel House deal was found by Cheapflights users on 6/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:05 pm
LHR
-
ORD
1 stop14h 20m
Icelandair
Wed 7/87:25 pm
ORD
-
LHR
1 stop10h 30m
Icelandair
Deal found 6/19$760
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Sat 9/59:00 am
LCY
-
ORD
1 stop12h 55m
SWISS
Sat 9/197:05 pm
ORD
-
LCY
1 stop16h 20m
SWISS
Deal found 6/20$761
This SWISS deal was found by Cheapflights users on 6/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:40 pm
LHR
-
ORD
1 stop23h 55m
SWISS
Fri 9/257:05 pm
ORD
-
LHR
2 stops15h 30m
SWISS
Deal found 6/19$761
This Mytrip deal was found by Cheapflights users on 6/19. 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.
Tue 7/78:00 am
STN
-
ORD
3 stops18h 05m
Multiple Airlines
Tue 7/143:45 pm
ORD
-
STN
2 stops15h 30m
Multiple Airlines
Deal found 6/19$761

Find flight deals from London to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Chicago (CHI). 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 June 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$758
(Air Canada)

One-way from

$586
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$893

Good round-trip deal

$980 or less

Good one-way deal

$668 or less
Provider with most accurate pricing for London (LON)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Chicago (CHI) flights.
Search Deals
From London (LON) to Chicago (CHI)
Search Deals
One-way flight from London (LON) to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($142 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from London (LON) to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Chicago 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 June 20, 2026.
Use the filters below to find and compare flights from London to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonChicago

LTN - ORD

LTNORD

London Luton

Fri 9/25

8:30 am-9:25 pm

2 stops18h 55m

Chicago O'Hare Intl

Sun 9/27

10:25 pm-10:20 pm

2 stops17h 55m

$758

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Fri 9/25

9:40 am-9:35 pm

2 stops17h 55m

Chicago O'Hare Intl

Sun 9/27

11:45 am-9:50 am

2 stops16h 05m

$768
Quickest round-trip

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Sun 9/20

2:45 pm-5:35 pm

Nonstop8h 50m

Chicago O'Hare Intl

Thu 9/24

9:00 pm-10:50 am

Nonstop7h 50m

$770

LondonChicago

LTN - ORD

LTNORD

London Luton

Thu 10/15

8:30 am-6:15 pm

2 stops15h 45m

Chicago O'Hare Intl

Sun 11/15

3:55 pm-9:15 am

1 stop11h 20m

$770

LondonChicago

LTN - ORD

LTNORD

London Luton

Sun 8/30

4:25 pm-7:15 pm

2 stops32h 50m

Chicago O'Hare Intl

Thu 9/17

7:25 pm-12:50 am

2 stops23h 25m

$770

LondonChicago

LTN - ORD

LTNORD

London Luton

Sat 11/7

12:15 pm-3:30 pm

2 stops33h 15m

Chicago O'Hare Intl

Mon 12/7

6:30 pm-4:55 pm

2 stops16h 25m

$773

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Wed 9/16

6:40 am-4:10 pm

1 stop15h 30m

Chicago O'Hare Intl

Tue 9/22

7:15 pm-4:25 pm

2 stops15h 10m

$806

LondonChicago

LGW - ORD

LGWORD

London Gatwick

Thu 8/27

9:20 pm-4:00 pm

2 stops24h 40m

Chicago O'Hare Intl

Sat 9/5

6:05 pm-9:45 am

1 stop33h 40m

$814

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Thu 8/27

7:40 am-2:00 pm

1 stop12h 20m

Chicago O'Hare Intl

Sat 9/5

7:05 pm-9:05 am

Nonstop8h 00m

$816

LondonChicago

LHR - ORD

LHRORD

London Heathrow

Fri 10/9

9:30 am-8:12 pm

1 stop16h 42m

Chicago O'Hare Intl

Mon 10/12

9:30 pm-11:55 am

Nonstop8h 25m

$820

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from London to Chicago

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 London to Chicago in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
OvagoPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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 London-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub 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 London-Chicago 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 London to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from London 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 London to Chicago

What is the cheapest month to book a flight from London to Chicago?

Currently, September is the cheapest month in which you can book a flight from London to Chicago (average of $589). Flying from London to Chicago in January is currently the most expensive (average of $1,711). 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 LON to CHI?

Find hourly flight availability from London to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 20, 2026.

When flying from London to Chicago, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Chicago

Explore weekly flight availability from London to Chicago. 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 June 20, 2026.

The most flights from LON to CHI are scheduled on a Friday (52 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (44 on average).

How much does it cost to fly round-trip from London to Chicago?

What’s the top layover airport for flights from London to Chicago?

Share of 1-stop round-trip flights from London to Chicago chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 80% of 1-stop itineraries from London to Chicago on Cheapflights.

What’s the cheapest layover airport for flights from London to Chicago?

Average round-trip fare for 1-stop flights from London to Chicago, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $668.

What’s the fastest layover option from London to Chicago?

Shortest average travel time for 1-stop one-way flights from London to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 09m.

Which airport typically offers the quickest layover for flights from London to Chicago?

Average layover duration for 1-stop one-way flights from London to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 03m.

How often are flights from London to Chicago delayed?

About 11% of weekly flights between London and Chicago have experienced delays in the past year, with the average delay time being 179 minutes.

What is the most punctual flight time for London to Chicago flights?

Historically, flights departing at night 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?

Monday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Chicago flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 6% of flights being delayed.

How far ahead should I book a flight from London to Chicago?

The best time to book flights from London to Chicago is 41 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.

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated June 20, 2026.
See what other customers who have flown with United Airlines,American Airlines, andIcelandair from London to Chicago 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
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,865 reviews
United Airlines
7.4
Good
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.1
Good
11,720 reviews
United Airlines
7.4
Good
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Icelandair
7.0
Good
680 reviews
United Airlines
7.4
Good
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
8,084 reviews
United Airlines
7.4
Good
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
8,059 reviews
United Airlines
7.4
Good
9,865 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from London to Chicago. 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 London to Chicago?

    For as low as $762, SWISS can have you in Chicago from London in 13h 05m. The distance from London to Chicago is about 3957 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London to Chicago round-trip?

    Currently priced at $446, Aer Lingus will fly you from London to Chicago and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Austrian Airlines - these airlines can fly you to your destination from $467 and $530, respectively. Aer Lingus is currently priced 40% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London to Chicago one-way?

    $380 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on SWISS and Aer Lingus, with prices starting from $427 and $455, respectively.

  • What are the most popular routes from London to Chicago?

    While some choose either London Gatwick - Chicago O'Hare Intl or London Stansted - Chicago O'Hare Intl, London Heathrow - Chicago O'Hare Intl is the most popular route from London to Chicago.

  • What are the most reliable airlines from London to Chicago?

    Before booking your flight to Chicago from London, check out the most reliable airlines to get you to your destination on time: Air Canada (91%), Austrian Airlines (91%), United Airlines( 91%).

  • What are the cheapest flights from London to Chicago?

    While on average a flight from London to Chicago is generally $1,803, our data shows the cheapest flight currently is $554. When looking at the most popular route, (London Heathrow - Chicago O'Hare Intl), you can expect to pay $557 for that flight.

  • Can I find deals for flights from London to Chicago that include hotel bookings?

    Yes. In addition to deals on London to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Chicago.

  • Can I find deals for business class flights from London to Chicago?

    Yes. Cheapflights offers flight deals from London to Chicago 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 London to Chicago?

    Currently, September is the cheapest month in which you can book a flight from London to Chicago (average of $589). Flying from London to Chicago in January is currently the most expensive (average of $1,711). 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 Chicago?

Book flights to Chicago if you plan to visit one of these locations
Benton Harbor
Lansing
Merrillville
Hammond
Porter

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Top 7 airlines flying from London to Chicago

Discover the top 7 airlines that operate flights from London to Chicago. 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 June 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$446Average$672FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$467Average$632FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$530Average$931FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$556Average$905FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$574Average$900FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$583Average$875FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$618Average$912FlexibilityNo cancel feeOn-time76%

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