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Lisbon

$486+ Cheap flights from Dulles Intl (IAD) to Lisbon (LIS)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
Jul 4 — Jul 111
Sat 7/4
Sat 7/11
1 adult, Economy
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Find cheap flights from Dulles Intl to Lisbon 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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado are usually found in January or February, booked 83 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from Dulles Intl to Lisbon

Cheapest flights from Dulles Intl to Lisbon
Explore the most affordable flight options available from Dulles Intl to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.

This Mytrip deal was found by Cheapflights users on 6/3. 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.
Mon 7/279:55 am
IAD
-
LIS
3 stops24h 50m
Multiple Airlines
Mon 8/38:10 pm
LIS
-
IAD
2 stops22h 25m
Multiple Airlines
Deal found 6/3$1,039
This Mytrip deal was found by Cheapflights users on 6/3. 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 7/258:30 pm
IAD
-
LIS
2 stops20h 05m
Multiple Airlines
Sun 8/26:10 am
LIS
-
IAD
3 stops17h 51m
Multiple Airlines
Deal found 6/3$1,040
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 9/1911:20 pm
IAD
-
LIS
2 stops13h 50m
Multiple Airlines
Wed 9/307:45 am
LIS
-
IAD
1 stop12h 45m
Multiple Airlines
Deal found 6/2$1,041
This Mytrip deal was found by Cheapflights users on 6/3. 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.
Sun 6/76:14 am
IAD
-
LIS
3 stops34h 31m
Multiple Airlines
Fri 6/1911:35 am
LIS
-
IAD
2 stops28h 37m
Multiple Airlines
Deal found 6/3$1,042
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Thu 10/15:45 pm
IAD
-
LIS
Nonstop7h 25m
TAP AIR PORTUGAL
Fri 10/910:55 am
LIS
-
IAD
Nonstop8h 30m
TAP AIR PORTUGAL
Deal found 6/2$1,043
This Turkish Airlines deal was found by Cheapflights users on 6/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:45 pm
IAD
-
LIS
1 stop36h 50m
Turkish Airlines
Sun 10/44:50 pm
LIS
-
IAD
1 stop23h 45m
Turkish Airlines
Deal found 6/2$1,044
This Mytrip deal was found by Cheapflights users on 6/4. 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.
Thu 7/28:18 am
IAD
-
LIS
3 stops33h 17m
Multiple Airlines
Thu 7/98:15 am
LIS
-
IAD
2 stops31h 31m
Multiple Airlines
Deal found 6/4$1,046
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
Sun 9/135:15 pm
IAD
-
LIS
1 stop23h 50m
Multiple Airlines
Tue 9/2211:40 am
LIS
-
IAD
Nonstop8h 30m
Multiple Airlines
Deal found 6/3$1,047
This KAYAK deal was found by Cheapflights users on 6/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:05 pm
IAD
-
LIS
Nonstop7h 10m
Lufthansa
Sun 11/85:00 am
LIS
-
IAD
1 stop15h 55m
Lufthansa
Deal found 6/4$1,048
This United Airlines deal was found by Cheapflights users on 6/2. 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.
Thu 11/510:05 pm
IAD
-
LIS
Nonstop7h 10m
United Airlines
Thu 11/125:00 am
LIS
-
IAD
1 stop15h 55m
United Airlines
Deal found 6/2$1,049
This FlightHub deal was found by Cheapflights users on 6/3. 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.
Sat 8/15:05 pm
IAD
-
LIS
Nonstop7h 25m
TAP AIR PORTUGAL
Wed 8/1911:40 am
LIS
-
IAD
Nonstop8h 30m
TAP AIR PORTUGAL
Deal found 6/3$1,050
This KAYAK deal was found by Cheapflights users on 6/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:05 pm
IAD
-
LIS
Nonstop7h 10m
Multiple Airlines
Wed 11/43:25 pm
LIS
-
IAD
1 stop30h 20m
Multiple Airlines
Deal found 6/3$1,051

Find flight deals from Dulles Intl to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Lisbon (LIS). 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 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,039
(Mytrip)

One-way from

$486
(oojo)

Popular in

June

Cheapest in

January

Average price

$1,391

Good round-trip deal

$890 or less

Good one-way deal

$519 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Lisbon Humberto Delgado flights.
Search Deals
From Washington, D.C. Dulles Intl to Lisbon Humberto Delgado
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($262 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 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 Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Lisbon 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 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 10/26

7:59 pm-5:30 pm

2 stops17h 31m

Lisbon Humberto Delgado

Mon 11/2

5:00 am-7:10 pm

2 stops19h 10m

$1,069

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 9/10

8:20 pm-7:35 pm

2 stops18h 15m

Lisbon Humberto Delgado

Tue 9/15

6:15 pm-5:00 pm

2 stops27h 45m

$1,075

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/14

8:20 pm-9:50 pm

2 stops20h 30m

Lisbon Humberto Delgado

Tue 9/22

6:15 pm-5:00 pm

2 stops27h 45m

$1,090

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 11/7

1:20 pm-9:50 am

1 stop15h 30m

Lisbon Humberto Delgado

Sat 11/14

11:55 am-3:30 pm

Nonstop8h 35m

$1,115

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 7/20

12:35 pm-8:20 am

1 stop14h 45m

Lisbon Humberto Delgado

Wed 7/29

12:20 pm-3:15 pm

Nonstop7h 55m

$1,234

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 7/14

6:59 pm-2:55 pm

2 stops14h 56m

Lisbon Humberto Delgado

Tue 8/4

5:00 am-6:33 pm

2 stops18h 33m

$1,244

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 9/27

8:20 pm-7:35 pm

2 stops18h 15m

Lisbon Humberto Delgado

Tue 10/6

6:15 pm-5:00 pm

2 stops27h 45m

$1,280

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 10/7

8:20 pm-10:10 pm

2 stops20h 50m

Lisbon Humberto Delgado

Mon 10/12

7:00 am-7:10 pm

2 stops17h 10m

$1,290

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 7/1

6:10 pm-6:45 pm

1 stop19h 35m

Lisbon Humberto Delgado

Thu 7/16

5:00 am-4:41 pm

2 stops16h 41m

$1,309

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 7/20

8:27 am-8:00 am

2 stops18h 33m

Lisbon Humberto Delgado

Wed 7/29

12:45 pm-11:13 pm

2 stops15h 28m

$1,321

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Dulles Intl to Lisbon

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

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Lisbon?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 82 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 Lisbon?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $663). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,391). 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 LIS?

Find hourly flight availability from Dulles Intl to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 4, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Lisbon as you normally would.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Lisbon?

The best insider tips for Washington, D.C. Dulles Intl Airport to Lisbon flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Lisbon trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on LIS and IAD

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

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated June 4, 2026.
See what other customers who have flown with Turkish Airlines,United Airlines, andTAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Turkish Airlines
7.4
Good
4,408 reviews
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
United Airlines
7.4
Good
9,772 reviews
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
TAP AIR PORTUGAL
7.2
Good
2,267 reviews
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Lufthansa
6.8
Okay
8,036 reviews
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent
Royal Air Maroc
6.2
Okay
614 reviews
Turkish Airlines
7.4
Good
4,408 reviews

Boarding

7.3

Entertainment

7.5

Overall

7.4

Crew

7.8

Comfort

7.3

Food

7.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

MIA - IST

The cabin is very clean, the service is great, the food is excellent

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Lisbon from Washington, D.C. Dulles Intl?

    Most people fly into Lisbon Humberto Delgado (LIS) if they book a flight to Lisbon from Washington, D.C. Dulles Intl. On average, Humberto Delgado has 6 inbound flights from Washington, D.C. Dulles Intl per day from 8 airlines. Lisbon Humberto Delgado is conveniently located just 4.2 mi from Lisbon’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Lisbon?

    Departing from Washington, D.C. Dulles Intl Airport to Lisbon will take you 15h 30m. Airlines will cover a distance of 3580 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 Lisbon round-trip?

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Lisbon round-trip from $504. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from $529, and Royal Air Maroc, from $544. Scandinavian Airlines is currently priced 47% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Lisbon one-way?

    The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $335. However, be on the lookout for offers from Royal Air Maroc and Lufthansa, as they are both options that can get you from Washington, D.C. Dulles Intl Airport to Lisbon for a low price.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Lisbon?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Lisbon are airBaltic (97%), JetBlue (89%) and TAP AIR PORTUGAL (89%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Lisbon?

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Lisbon is $408. On average you can expect to pay $1,369. The most popular route, (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), can usually be booked for $676.

  • Can I find deals for flights from Dulles Intl to Lisbon that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to Lisbon?

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

  • Can I find deals for business class flights from Dulles Intl to Lisbon?

    Yes. Cheapflights offers flight deals from Dulles Intl to Lisbon 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 Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Lisbon (average of $663). Flying from Washington, D.C. Dulles Intl Airport to Lisbon in June is currently the most expensive (average of $1,391). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Ericeira
Oeiras
Beja
Costa da Caparica
Torres Vedras
Nazaré
Colares
Sesimbra

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Alternative routes for Dulles Intl to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to Lisbon flights
Reagan-National to Lisbon flights
Dulles Intl to Porto flights
Dulles Intl to Funchal flights
Baltimore to Lajes flights

Top 8 airlines flying from Dulles Intl to Lisbon

Discover the top 8 airlines that operate flights from Dulles Intl to Lisbon. 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 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$504Average$599FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$529Average$983FlexibilityNo cancel feeOn-timeN/A
Royal Air MarocCheapest$544Average$714FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$591Average$667FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$649Average$868FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$707Average$1,242FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$750Average$1,161FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$920Average$1,414FlexibilityNo cancel feeOn-time76%

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