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$74+ Cheap flights from Dulles Intl (IAD) to Boston (BOS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BOS
nov. 1 — nov. 81
sáb. 11/1
sáb. 11/8
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Boston Logan Intl are usually found in January or March, booked 54 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Dulles Intl to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Boston (BOS). 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 octubre 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$74
(United Airlines)

Popular in

May

Cheapest in

January

Average price

$313

Good round-trip deal

$211 or less

Good one-way deal

$122 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Boston Logan Intl flights.
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From Washington, D.C. Dulles Intl to Boston Logan Intl
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One-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl
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Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Boston Logan Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Boston Logan Intl.
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Find flight deals from Dulles Intl to Boston

Cheapest flights from Dulles Intl to Boston
Explore the most affordable flight options available from Dulles Intl to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 2, 2025.

This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/158:50 amIAD - BOS
Nonstop1h 41mUnited Airlines
mié. 10/225:30 amBOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 10/1$137
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/146:00 amIAD - BOS
1 stop4h 43mUnited Airlines
dom. 11/165:30 amBOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 9/30$142
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/41:21 pmIAD - BOS
1 stop11h 23mFrontier
lun. 12/86:00 amBOS - IAD
1 stop6h 49mFrontier
Deal found 9/29$145
This United Airlines deal was found by Cheapflights users on 10/2. 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.
mar. 11/256:00 amIAD - BOS
1 stop4h 43mUnited Airlines
mar. 12/25:30 amBOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 10/2$152
This Kiwi.com deal was found by Cheapflights users on 9/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/41:21 pmIAD - BOS
1 stop11h 23mFrontier
dom. 12/76:00 amBOS - IAD
1 stop6h 49mFrontier
Deal found 9/29$153
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/76:00 amIAD - BOS
1 stop4h 58mUnited Airlines
mar. 12/99:30 amBOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 9/30$154
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/158:50 amIAD - BOS
Nonstop1h 41mUnited Airlines
mié. 10/157:08 pmBOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 9/30$155
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/318:45 amIAD - BOS
1 stop3h 35mUnited Airlines
sáb. 11/15:30 amBOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 10/1$157
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/168:30 amIAD - BOS
1 stop4h 55mUnited Airlines
jue. 10/235:30 amBOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 9/30$159
This Frontier deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/318:36 pmIAD - BOS
1 stop11h 52mFrontier
lun. 11/39:23 amBOS - IAD
1 stop10h 28mFrontier
Deal found 9/30$160
This United Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2010:19 pmIAD - BOS
Nonstop1h 40mUnited Airlines
mar. 10/217:08 pmBOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 9/30$161

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Boston 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 octubre 2, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Boston that are best for you.

Fly from

Dulles Intl

Fly to

Boston

Route

Depart

Return

Price

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

dom. 12/7

10:06 pm-11:41 pm

Nonstop1h 35m

Boston Logan Intl

lun. 12/8

7:07 pm-8:54 pm

Nonstop1h 47m

$137

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

vie. 11/14

6:00 am-10:43 am

1 stop4h 43m

Boston Logan Intl

dom. 11/16

5:30 am-7:13 am

Nonstop1h 43m

$142

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

mié. 10/29

8:45 am-12:28 pm

1 stop3h 43m

Boston Logan Intl

mar. 11/4

5:30 am-7:13 am

Nonstop1h 43m

$147

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sáb. 11/1

12:58 pm-6:32 pm

1 stop5h 34m

Boston Logan Intl

mar. 11/4

5:30 am-7:13 am

Nonstop1h 43m

$157

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

jue. 11/27

8:45 am-12:28 pm

1 stop3h 43m

Boston Logan Intl

mar. 12/2

6:25 pm-11:21 pm

1 stop4h 56m

$176

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

vie. 11/14

10:07 pm-11:42 pm

Nonstop1h 35m

Boston Logan Intl

lun. 11/17

5:30 am-7:13 am

Nonstop1h 43m

$182

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

sáb. 11/1

5:33 pm-10:48 pm

1 stop5h 15m

Boston Logan Intl

sáb. 11/8

5:30 am-7:13 am

Nonstop1h 43m

$187

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

mar. 10/21

8:50 am-10:31 am

Nonstop1h 41m

Boston Logan Intl

jue. 10/30

5:30 am-7:13 am

Nonstop1h 43m

$187

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

vie. 10/24

10:19 pm-11:59 pm

Nonstop1h 40m

Boston Logan Intl

jue. 10/30

5:30 am-7:13 am

Nonstop1h 43m

$192

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

jue. 10/23

10:19 pm-11:59 pm

Nonstop1h 40m

Boston Logan Intl

sáb. 11/1

5:30 am-7:13 am

Nonstop1h 43m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/30

Showing 1-10 of 23 results
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Compare providers for flights from Dulles Intl to Boston

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 Boston in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 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 Washington, D.C. Dulles Intl Airport-Boston 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-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Boston 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-Boston 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-Boston 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 Boston

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Boston. Price data was last updated on September 26, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Boston, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Boston?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of $218). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of $311). 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 BOS?

Find hourly flight availability from Dulles Intl to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 2, 2025.

When flying from Washington, D.C. Dulles Intl Airport to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 26% versus a flight in the afternoon.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Boston?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Boston. Price data was last updated on September 28, 2025.

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

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

The best insider tips for Washington, D.C. Dulles Intl Airport to Boston 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 Washington, D.C. Dulles Intl Airport to Boston trip
Airports
IAD

For a smooth departure, use the Aerotrain to navigate between terminals, but allow extra time for long walks and escalators.

Read more about IADby Ramsey Qubein
BOS

At BOS, rideshares like Uber and Lyft are convenient, but allow extra time for traffic and navigating pickup points.

Read more about BOSby Paul Rubio
Our travel experts
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

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

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated octubre 2, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and JetBlue from Washington, D.C. Dulles Intl Airport to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,962 reviews
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,933 reviews
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.2
Good
2,911 reviews
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,070 reviews
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,155 reviews
Delta
8.0
Very good
7,962 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Boston. 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 Boston from Washington, D.C. Dulles Intl?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Boston. 5 airlines have flights to Logan Intl from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Boston Logan Intl should not be difficult; the airport handles an average of 13 inbound flights from Washington, D.C. Dulles Intl per day.

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

    For as low as $137, United Airlines can have you in Boston from Washington, D.C. Dulles Intl Airport in 1h 35m. The distance between Washington, D.C. Dulles Intl Airport and Boston is about 411 mi. All flights are typically nonstop.

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

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Boston is JetBlue. Our recent data shows that you can find tickets from as low as $63 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $69 and $78 round-trip. JetBlue is 78% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Boston on time: Egyptair (92%), Air China (88%), Avianca (80%).

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

    On average you can expect to pay $463 for a flight from Washington, D.C. Dulles Intl Airport to Boston. The cheapest flight overall is $78 while the most popular route, (Washington, D.C. Dulles Intl - Boston Logan Intl) is currently priced at $117.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Boston (average of $218). Flying from Washington, D.C. Dulles Intl Airport to Boston in July is currently the most expensive (average of $311). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Lincoln
Lowell
Smithfield
Cranston
Chestnut Hill
Peabody
Quincy
York Beach
Warwick
Swansea
Old Orchard Beach
Brockton
Waltham
Chelsea

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Alternative routes for Dulles Intl to Boston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Dulles Intl to Boston

Discover the top 5 airlines that operate flights from Dulles Intl to Boston. 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 octubre 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$63Average$206FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$147FlexibilityNo cancel feeOn-time65%
DeltaCheapest$78Average$238FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$116Average$250FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$147Average$294FlexibilityNo cancel feeOn-time69%

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