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Barcelona-El Prat

$299+ Cheap flights from Dulles Intl (IAD) to Barcelona-El Prat (BCN)

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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BCN
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Barcelona-El Prat are usually found in January or November, booked 58 days in advance, depart on a Monday or Sunday and return on a Wednesday

Cheap flight deals from Dulles Intl to Barcelona-El Prat

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Barcelona-El Prat (BCN). 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 August 18, 2025.

Round-trip from

$481
(Scandinavian Airlines)

One-way from

$299
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$737

Good round-trip deal

$552 or less

Good one-way deal

$394 or less
From Washington, D.C. Dulles Intl to Barcelona-El Prat
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One-way flight from Washington, D.C. Dulles Intl to Barcelona-El Prat
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Highest demand for flights based on searches. 16% potential increase in price ($164 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Barcelona-El Prat.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Barcelona-El Prat.
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Find flight deals from Dulles Intl to Barcelona-El Prat

Cheapest flights from Dulles Intl to Barcelona-El Prat
Explore the most affordable flight options available from Dulles Intl to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 8/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:30 pmIAD - BCN
1 stop15h 50mScandinavian Airlines
Sun 11/232:45 pmBCN - IAD
2 stops32h 30mScandinavian Airlines
Deal found 8/17$481
This Air Canada deal was found by Cheapflights users on 8/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/281:00 pmIAD - BCN
2 stops14h 20mAir Canada
Wed 10/81:15 pmBCN - IAD
1 stop26h 23mAir Canada
Deal found 8/17$482
This oojo deal was found by Cheapflights users on 8/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:20 pmIAD - BCN
1 stop15h 00mTAP AIR PORTUGAL
Mon 10/1310:40 pmBCN - IAD
1 stop28h 10mTAP AIR PORTUGAL
Deal found 8/16$483
This oojo deal was found by Cheapflights users on 8/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:20 pmIAD - BCN
1 stop17h 30mTAP AIR PORTUGAL
Sun 10/1910:40 pmBCN - IAD
1 stop22h 40mTAP AIR PORTUGAL
Deal found 8/15$484
This oojo deal was found by Cheapflights users on 8/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:00 pmIAD - BCN
1 stop15h 10mTAP AIR PORTUGAL
Sat 10/48:10 pmBCN - IAD
1 stop25h 10mTAP AIR PORTUGAL
Deal found 8/17$485
This Scandinavian Airlines deal was found by Cheapflights users on 8/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/248:30 pmIAD - BCN
1 stop15h 50mScandinavian Airlines
Fri 12/57:10 pmBCN - IAD
1 stop29h 40mScandinavian Airlines
Deal found 8/16$486
This CrystalTravel deal was found by Cheapflights users on 8/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/610:05 pmIAD - BCN
1 stop14h 05mScandinavian Airlines
Sat 10/119:40 amBCN - IAD
1 stop16h 19mScandinavian Airlines
Deal found 8/17$487
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:30 pmIAD - BCN
1 stop12h 15mIcelandair
Fri 9/263:45 pmBCN - IAD
1 stop12h 25mIcelandair
Deal found 8/16$488
This Orbitz deal was found by Cheapflights users on 8/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1212:40 pmIAD - BCN
2 stops14h 55mMultiple Airlines
Mon 11/177:50 pmBCN - IAD
1 stop26h 50mMultiple Airlines
Deal found 8/15$490
This oojo deal was found by Cheapflights users on 8/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:50 pmIAD - BCN
1 stop19h 30mTAP AIR PORTUGAL
Tue 9/303:00 pmBCN - IAD
1 stop30h 20mTAP AIR PORTUGAL
Deal found 8/17$491

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Barcelona-El Prat 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 August 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport that are best for you.

Fly from

Dulles Intl

Fly to

Barcelona-El Prat

Route

Depart

Return

Price

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Thu 11/6

8:30 pm-6:20 pm

1 stop15h 50m

Barcelona-El Prat

Sun 11/23

2:45 pm-5:15 pm

2 stops32h 30m

$481

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 11/12

9:00 am-9:35 am

2 stops18h 35m

Barcelona-El Prat

Wed 11/19

1:35 pm-3:54 pm

2 stops32h 19m

$482

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 1/18

12:35 pm-9:35 am

2 stops15h 00m

Barcelona-El Prat

Fri 1/23

6:50 am-2:35 pm

1 stop13h 45m

$483

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Thu 11/13

5:30 pm-10:05 am

1 stop10h 35m

Barcelona-El Prat

Mon 11/24

6:45 am-3:15 pm

1 stop14h 30m

$483

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Wed 1/14

12:45 pm-9:35 am

2 stops14h 50m

Barcelona-El Prat

Fri 1/23

1:50 pm-8:15 pm

1 stop12h 25m

$483

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Fri 10/3

10:20 pm-7:20 pm

1 stop15h 00m

Barcelona-El Prat

Mon 10/13

10:40 pm-8:50 pm

1 stop28h 10m

$483

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 2/8

12:40 pm-9:35 am

2 stops14h 55m

Barcelona-El Prat

Fri 2/13

5:50 am-8:59 pm

2 stops21h 09m

$485

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sat 11/15

8:30 pm-6:20 pm

1 stop15h 50m

Barcelona-El Prat

Fri 11/21

7:10 pm-6:50 pm

1 stop29h 40m

$486

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Mon 10/6

10:05 pm-6:10 pm

1 stop14h 05m

Barcelona-El Prat

Sat 10/11

9:40 am-7:59 pm

1 stop16h 19m

$489

Washington, D.C.Barcelona

IAD - BCN

IADBCN

Washington, D.C. Dulles Intl

Sun 9/7

10:08 pm-7:50 am

2 stops27h 42m

Barcelona-El Prat

Wed 9/17

12:10 pm-11:54 am

2 stops29h 44m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 23 results
1
2
3

Best time to book a flight from Dulles Intl to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Barcelona-El Prat. Price data was last updated on August 8, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,057). 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 IAD to BCN?

Find hourly flight availability from Dulles Intl to Barcelona-El Prat. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport at noon. Doing so could potentially save you 27% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Barcelona-El Prat. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport

Explore weekly flight availability from Dulles Intl to Barcelona-El Prat. 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 August 18, 2025.

The most flights from IAD to BCN are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Madrid (MAD) – chosen by Cheapflights users on 78% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $606.

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Madrid (MAD) have the shortest average one-way travel time for 1-stop routes: 11h 07m.

Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

Average layover duration for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Madrid (MAD) offer the fastest connection on this route, with an average layover time of 2h 10m.

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. 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 Barcelona-El Prat. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown United Airlines, Aer Lingus, and TAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport. 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.
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Aer Lingus
7.2
Good
1,220 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
TAP AIR PORTUGAL
7.1
Good
1,954 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Iberia
7.0
Good
2,884 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
British Airways
6.7
Okay
7,277 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Barcelona-El Prat. 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 Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    A quick flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport can take about 15h. Scandinavian Airlines provides one of the quickest options available for as low as $483. The distance from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport is about 4046 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport round-trip from $384. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from $409, and TAP AIR PORTUGAL, from $416. You may be able to fly from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport for 52% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport are Air Canada (41%), United Airlines (41%) and Lufthansa (41%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    Looking at all options, your cheapest flight can be booked for $394. While the most popular route (Washington, D.C. Dulles Intl - Barcelona-El Prat) can be booked for $373 on average our data indicates $2,291 when flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport.

  • Where are the most common layover locations when flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    Flights departing from Washington, D.C. Dulles Intl Airport and landing in Barcelona-El Prat Airport layover in Lisbon most frequently.

  • What are some popular things to do or see while on a layover in Lisbon?

    Lisbon travelers tend to visit Chiado, Praça do Marquês de Pombal, and Londres more than anywhere else. Chiado, Praça do Marquês de Pombal, and Londres are located about 4.5 mi, 3.6 mi, and 2.3 mi, respectively from Lisbon Humberto Delgado. Travelers can rent a car at Lisbon Humberto Delgado for an average daily rate of $32 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flights?

    Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport flights that have layovers will least frequently stop in Madrid.

  • Can I find deals for flights from Dulles Intl to Barcelona-El Prat that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Barcelona-El Prat flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Barcelona-El Prat?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Barcelona-El Prat.

  • Can I find deals for business class flights from Dulles Intl to Barcelona-El Prat?

    Yes. Cheapflights offers flight deals from Dulles Intl to Barcelona-El Prat 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 Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport (average of $523). Flying from Washington, D.C. Dulles Intl Airport to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,057). 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 Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Calella
Roses
Castelldefels
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar
Santa Susanna

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Dulles Intl to Barcelona-El Prat

Discover the top 10 airlines that operate flights from Dulles Intl to Barcelona-El Prat. 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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$384Average$564FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$409Average$580FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$416Average$758FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$468Average$903FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$498Average$707FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$500Average$881FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$513Average$1,040FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$514Average$836FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$524Average$796FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$559Average$1,257FlexibilityNo cancel feeOn-time76%

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