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Reagan-National

$149+ Cheap flights from San Diego (SAN) to Reagan-National (DCA)

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — DCA
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Find cheap flights from San Diego to Reagan-National 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”

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3. Compare prices and book

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Cheapflights Tip: The best prices from San Diego to Washington, D.C. Reagan-National are usually found in January or February, booked 78 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from San Diego to Reagan-National

Cheapest flights from San Diego to Reagan-National
Explore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2210:30 am
SAN
-
DCA
1 stop8h 29m
Frontier
Sat 5/307:00 am
DCA
-
SAN
2 stops19h 47m
Frontier
Deal found 3/28$248
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Wed 5/206:25 am
SAN
-
DCA
1 stop12h 33m
Frontier
Sat 5/307:00 am
DCA
-
SAN
2 stops19h 47m
Frontier
Deal found 3/31$249
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:38 am
SAN
-
DCA
2 stops25h 21m
Frontier
Mon 5/46:00 pm
DCA
-
SAN
1 stop8h 59m
Frontier
Deal found 3/30$250
This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:25 am
SAN
-
DCA
1 stop12h 34m
Frontier
Mon 4/277:59 am
DCA
-
SAN
1 stop19h 00m
Frontier
Deal found 3/31$251
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:25 am
SAN
-
DCA
1 stop7h 34m
Frontier
Tue 4/141:59 pm
DCA
-
SAN
1 stop9h 05m
Frontier
Deal found 3/30$252
This Kiwi.com deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:19 pm
SAN
-
DCA
2 stops18h 40m
Frontier
Sat 5/28:00 am
DCA
-
SAN
1 stop15h 04m
Frontier
Deal found 3/28$253
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
Fri 5/810:07 pm
SAN
-
DCA
2 stops11h 52m
Frontier
Sun 5/107:00 am
DCA
-
SAN
1 stop19h 50m
Frontier
Deal found 3/31$254
This Southwest deal was found by Cheapflights users on 3/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:40 pm
SAN
-
DCA
1 stop6h 45m
Southwest
Tue 6/25:20 pm
DCA
-
SAN
1 stop7h 20m
Southwest
Deal found 3/31$255
This CheapOair deal was found by Cheapflights users on 3/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:37 am
SAN
-
DCA
1 stop24h 22m
Frontier
Sun 5/177:00 am
DCA
-
SAN
1 stop28h 42m
Frontier
Deal found 3/31$256
This Delta deal was found by Cheapflights users on 4/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:15 am
SAN
-
DCA
1 stop7h 21m
Delta
Sat 5/24:40 pm
DCA
-
SAN
1 stop8h 56m
Delta
Deal found 4/1$257
This Booking.com deal was found by Cheapflights users on 3/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:25 pm
SAN
-
DCA
1 stop21h 35m
Frontier
Sun 5/36:00 pm
DCA
-
SAN
1 stop17h 34m
Frontier
Deal found 3/30$258
This Frontier deal was found by Cheapflights users on 3/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:37 am
SAN
-
DCA
1 stop9h 21m
Frontier
Sun 6/76:00 pm
DCA
-
SAN
1 stop8h 50m
Frontier
Deal found 3/29$259

Find flight deals from San Diego to Reagan-National

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Reagan-National (DCA). 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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$248
(Kiwi.com)

One-way from

$149
(Delta)

Popular in

June

Cheapest in

January

Average price

$338

Good round-trip deal

$322 or less

Good one-way deal

$233 or less
Provider with most accurate pricing for San Diego-Washington, D.C. Reagan-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Washington, D.C. Reagan-National flights.
Search Deals
From San Diego to Washington, D.C. Reagan-National
Search Deals
One-way flight from San Diego to Washington, D.C. Reagan-National
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from San Diego to Washington, D.C. Reagan-National.
Search Deals
Price to beat on a one-way flight from San Diego to Washington, D.C. Reagan-National.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Reagan-National 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 April 1, 2026.
Use the filters below to find and compare flights from San Diego to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 4/25

6:15 am-4:36 pm

1 stop7h 21m

Washington, D.C. Reagan-National

Sat 5/2

4:40 pm-10:36 pm

1 stop8h 56m

$257

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 5/13

8:35 am-11:00 pm

2 stops11h 25m

Washington, D.C. Reagan-National

Tue 5/19

3:00 pm-10:00 pm

2 stops10h 00m

$307

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 5/12

8:35 am-11:00 pm

2 stops11h 25m

Washington, D.C. Reagan-National

Wed 5/13

10:55 am-7:35 pm

2 stops11h 40m

$352

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 5/13

8:35 am-11:00 pm

2 stops11h 25m

Washington, D.C. Reagan-National

Sat 5/16

8:45 am-8:25 pm

2 stops14h 40m

$358
Quickest round-trip

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 8/11

10:40 pm-8:50 am

1 stop7h 10m

Washington, D.C. Reagan-National

Fri 8/14

5:20 pm-9:20 pm

1 stop7h 00m

$362

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Thu 4/23

9:35 am-9:55 pm

2 stops9h 20m

Washington, D.C. Reagan-National

Mon 4/27

10:35 am-5:55 pm

2 stops10h 20m

$386

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sun 5/3

6:50 am-10:55 pm

2 stops13h 05m

Washington, D.C. Reagan-National

Thu 5/7

2:00 pm-8:00 pm

2 stops9h 00m

$398

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 7/7

10:40 pm-8:25 am

1 stop6h 45m

Washington, D.C. Reagan-National

Mon 7/13

4:30 pm-11:10 pm

2 stops9h 40m

$402

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 9/22

8:35 am-10:20 pm

2 stops10h 45m

Washington, D.C. Reagan-National

Fri 9/25

5:20 pm-9:20 pm

1 stop7h 00m

$418

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Fri 5/8

7:40 pm-9:59 am

2 stops11h 19m

Washington, D.C. Reagan-National

Wed 5/13

11:55 am-8:03 pm

2 stops11h 08m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 22 resultsSorted by cheapest first
1
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3

Compare providers for flights from San Diego to Reagan-National

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 San Diego to Reagan-National in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 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 San Diego-Washington, D.C. Reagan-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Washington, D.C. Reagan-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-Washington, D.C. Reagan-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Washington, D.C. Reagan-National Airport 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 San Diego-Washington, D.C. Reagan-National Airport 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 San Diego to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from San Diego 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 San Diego to Washington, D.C. Reagan-National Airport

How far ahead should I book a flight from San Diego to Washington, D.C. Reagan-National Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Reagan-National. Price data was last updated on March 13, 2026.

The price you pay for your flight from San Diego to Washington, D.C. Reagan-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 78 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 San Diego to Washington, D.C. Reagan-National Airport?

Currently, June is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Reagan-National Airport (average of $99). Flying from San Diego to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of $233). 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 SAN to DCA?

Find hourly flight availability from San Diego to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2026.

When flying from San Diego to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from San Diego to Washington, D.C. Reagan-National Airport?

Reviews of airlines servicing Reagan-National

Get insights into the airlines that provide service to Reagan-National. 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 Reagan-National. Reviews last updated April 1, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from San Diego to Washington, D.C. Reagan-National 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.
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,337 reviews
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Alaska Airlines
7.9
Good
12,149 reviews
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Delta
7.9
Good
8,366 reviews
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Hawaiian Airlines
7.8
Good
2,838 reviews
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Frontier
5.7
Fair
3,004 reviews
Southwest
8.0
Very good
4,337 reviews

Comfort

8.0

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Reagan-National. 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 from for flights from San Diego to Washington, D.C. Reagan-National?

    If you book a flight to Washington, D.C. Reagan-National from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 2 flights from San Diego to Washington, D.C. Reagan-National per day from 8 different airlines.

  • How long is the flight from San Diego to Washington, D.C. Reagan-National Airport?

    For as low as $257, Delta can have you in Washington, D.C. Reagan-National Airport from San Diego in 7h 21m. The distance from San Diego to Washington, D.C. Reagan-National Airport is about 2270 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 San Diego to Washington, D.C. Reagan-National Airport round-trip?

    Frontier, at $142, was found to be the cheapest airline from San Diego to Washington, D.C. Reagan-National Airport.Alternate airlines to your destination round-trip include JetBlue and Southwest. You may be able to fly from San Diego to Washington, D.C. Reagan-National Airport for 58% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Diego to Washington, D.C. Reagan-National Airport one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $85. Users have also found prices from $118 and $124 on Hawaiian Airlines and Southwest, respectively.

  • What are the cheapest flights from San Diego to Washington, D.C. Reagan-National Airport?

    Looking for the cheapest flight from San Diego to Washington, D.C. Reagan-National Airport? While on average our users pay $343, our data indicates the cheapest price to be $183. The most popular route (San Diego - Washington, D.C. Reagan-National), is priced around $157.

  • Can I find deals for flights from San Diego to Reagan-National that include hotel bookings?

    Yes. In addition to deals on San Diego to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Reagan-National?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Reagan-National.

  • Can I find deals for business class flights from San Diego to Reagan-National?

    Yes. Cheapflights offers flight deals from San Diego to Reagan-National 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 San Diego to Washington, D.C. Reagan-National Airport?

    Currently, June is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Reagan-National Airport (average of $99). Flying from San Diego to Washington, D.C. Reagan-National Airport in July is currently the most expensive (average of $233). 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 Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
Cordova
Manassas

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Diego to Reagan-National

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Reagan-National flights
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Oakland to Baltimore flights
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Santa Ana to Baltimore flights
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Las Vegas to Reagan-National flights
Reno to Dulles Intl flights
Sacramento to Baltimore flights
Burbank to Dulles Intl flights
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Burbank to Baltimore flights
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Reno to Baltimore flights
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Palm Springs to Dulles Intl flights
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Long Beach to Baltimore flights
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Palm Springs to Baltimore flights
San Luis Obispo to Baltimore flights
San Luis Obispo to Reagan-National flights
San Luis Obispo to Dulles Intl flights
Long Beach to Reagan-National flights
Monterey to Dulles Intl flights
Santa Barbara to Dulles Intl flights
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Monterey to Baltimore flights

Top 8 airlines flying from San Diego to Reagan-National

Discover the top 8 airlines that operate flights from San Diego to Reagan-National. 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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$142Average$272FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$147Average$276FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$216Average$367FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$219Average$324FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$237Average$368FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$256Average$371FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$362FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$396FlexibilityNo cancel feeOn-time69%

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