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Washington, D.C.

$120+ Cheap flights from San Antonio (SAT) to Washington, D.C. (WAS)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — WAS
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Antonio to Washington, D.C. are usually found in February or September, booked 84 days in advance, depart on a Thursday or Saturday and return on a Thursday

Cheap flight deals from San Antonio to Washington, D.C.

Cheapest flights from San Antonio to Washington, D.C.
Explore the most affordable flight options available from San Antonio to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2026.

This Frontier deal was found by Cheapflights users on 7/26. 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.
Fri 10/2310:34 am
SAT
-
BWI
1 stop6h 58m
Frontier
Sun 10/259:52 pm
BWI
-
SAT
1 stop12h 47m
Frontier
Deal found 7/26$240
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:05 am
SAT
-
BWI
1 stop9h 39m
Frontier
Sun 9/139:27 am
BWI
-
SAT
1 stop24h 43m
Frontier
Deal found 7/29$250
This CheapOair deal was found by Cheapflights users on 7/26. 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 8/289:51 am
SAT
-
BWI
1 stop13h 08m
Frontier
Sun 8/307:52 pm
BWI
-
SAT
1 stop14h 04m
Frontier
Deal found 7/26$251
This CheapOair deal was found by Cheapflights users on 7/26. 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.
Sat 8/299:51 am
SAT
-
BWI
1 stop11h 07m
Frontier
Thu 9/36:24 am
BWI
-
SAT
1 stop27h 32m
Frontier
Deal found 7/26$273
This CheapOair deal was found by Cheapflights users on 7/26. 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 9/49:51 am
SAT
-
BWI
1 stop23h 33m
Frontier
Sun 9/67:52 pm
BWI
-
SAT
1 stop14h 04m
Frontier
Deal found 7/26$275
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/179:51 am
SAT
-
BWI
1 stop13h 08m
Frontier
Tue 9/812:09 pm
BWI
-
SAT
1 stop21h 58m
Frontier
Deal found 7/28$280
This Frontier deal was found by Cheapflights users on 7/26. 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.
Fri 8/149:51 am
SAT
-
BWI
1 stop13h 08m
Frontier
Sun 8/169:28 pm
BWI
-
SAT
1 stop12h 28m
Frontier
Deal found 7/26$292
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm
SAT
-
DCA
2 stops7h 55m
Southwest
Fri 9/116:50 am
DCA
-
SAT
1 stop5h 20m
Southwest
Deal found 7/29$295
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/207:00 am
SAT
-
IAD
Nonstop3h 20m
United Airlines
Mon 8/248:25 am
IAD
-
SAT
Nonstop3h 34m
United Airlines
Deal found 7/27$297
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:30 am
SAT
-
BWI
Nonstop3h 20m
Southwest
Wed 9/23:30 pm
BWI
-
SAT
Nonstop3h 30m
Southwest
Deal found 7/29$297
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:11 am
SAT
-
DCA
Nonstop3h 29m
American Airlines
Wed 9/26:16 pm
DCA
-
SAT
Nonstop3h 41m
American Airlines
Deal found 7/27$297
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 8/219:51 am
SAT
-
IAD
2 stops30h 23m
Frontier
Mon 8/248:59 am
IAD
-
SAT
1 stop13h 30m
Frontier
Deal found 7/29$298

Find flight deals from San Antonio to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to Washington, D.C. (WAS). 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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Frontier)

One-way from

$120
(Frontier)

Popular in

June

Cheapest in

February

Average price

$418

Good round-trip deal

$319 or less

Good one-way deal

$173 or less
Provider with most accurate pricing for San Antonio-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-Washington, D.C. (WAS) flights.
Search Deals
From San Antonio to Washington, D.C. (WAS)
Search Deals
One-way flight from San Antonio to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from San Antonio to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from San Antonio to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to Washington, D.C. 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 July 30, 2026.
Use the filters below to find and compare flights from San Antonio to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 9/5

12:55 pm-9:50 pm

2 stops7h 55m

Washington, D.C. Reagan-National

Fri 9/11

6:50 am-11:10 am

1 stop5h 20m

$295
Quickest round-trip

San AntonioBaltimore

SAT - BWI

SATBWI

San Antonio

Mon 8/24

2:55 pm-7:15 pm

Nonstop3h 20m

Baltimore/Washington

Mon 8/31

3:45 pm-6:10 pm

Nonstop3h 25m

$297

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Wed 8/26

4:20 pm-11:55 pm

2 stops6h 35m

Washington, D.C. Reagan-National

Wed 9/2

9:35 am-5:55 pm

2 stops9h 20m

$299

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Thu 10/1

4:00 pm-11:14 pm

1 stop6h 14m

Washington, D.C. Dulles Intl

Wed 10/7

12:01 pm-5:34 pm

1 stop6h 33m

$303

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Sun 9/13

7:00 am-11:20 am

Nonstop3h 20m

Washington, D.C. Dulles Intl

Sat 9/19

10:41 am-4:31 pm

1 stop6h 50m

$304

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Sat 9/5

2:43 pm-9:45 pm

1 stop6h 02m

Washington, D.C. Reagan-National

Fri 9/11

8:00 am-12:49 pm

1 stop5h 49m

$309

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Fri 8/21

5:59 pm-12:30 am

1 stop5h 31m

Washington, D.C. Dulles Intl

Sat 8/29

5:55 pm-10:39 pm

1 stop5h 44m

$314

San AntonioWashington, D.C.

SAT - IAD

SATIAD

San Antonio

Thu 8/20

5:20 am-2:05 pm

1 stop7h 45m

Washington, D.C. Dulles Intl

Sun 8/23

6:00 am-9:48 am

1 stop4h 48m

$314

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Thu 8/20

5:15 am-11:28 am

1 stop5h 13m

Washington, D.C. Reagan-National

Sun 8/23

6:00 am-9:48 am

1 stop4h 48m

$314

San AntonioWashington, D.C.

SAT - DCA

SATDCA

San Antonio

Fri 9/18

1:20 pm-10:59 pm

1 stop8h 39m

Washington, D.C. Reagan-National

Mon 9/21

7:40 pm-12:08 am

1 stop5h 28m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 57 resultsSorted by cheapest first
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Compare providers for flights from San Antonio to Washington, D.C.

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

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from San Antonio 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 Antonio to Washington, D.C.

What is the cheapest month to book a flight from San Antonio to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $329). Flying from San Antonio to Washington, D.C. in March is currently the most expensive (average of $461). 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 SAT to WAS?

Find hourly flight availability from San Antonio to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 40% on flights from San Antonio to Washington, D.C. by exploring options for tickets at noon.

Weekly flight availability from San Antonio to Washington, D.C.

Explore weekly flight availability from San Antonio to Washington, D.C.. 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 July 30, 2026.

The most flights from SAT to WAS are scheduled on a Thursday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from San Antonio to Washington, D.C.?

Airfare is below average for this route at the moment.
San Antonio to Washington, D.C. flights typically cost between $273 and $357 in October.
The cheapest round-trip price found within the last 5 days was $240 on Frontier (Oct 23-Oct 25).

What’s the top layover airport for flights from San Antonio to Washington, D.C.?

Share of 1-stop round-trip flights from San Antonio to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Chicago (MDW) – chosen by Cheapflights users on 50% of 1-stop itineraries from San Antonio to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from San Antonio to Washington, D.C.?

Average round-trip fare for 1-stop flights from San Antonio to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $184.

What’s the fastest layover option from San Antonio to Washington, D.C.?

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

Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 4h 57m.

Which airport typically offers the quickest layover for flights from San Antonio to Washington, D.C.?

Average layover duration for 1-stop one-way flights from San Antonio to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 0h 53m.

How far ahead should I book a flight from San Antonio to Washington, D.C.?

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Antonio to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

The best insider tips for San Antonio to Washington, D.C. 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 San Antonio to Washington, D.C. trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SAT 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 Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated July 30, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from San Antonio to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,227 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Delta
7.8
Good
8,487 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
United Airlines
7.4
Good
10,046 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
American Airlines
7.1
Good
11,841 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Frontier
5.6
Fair
2,747 reviews
Southwest
8.0
Very good
4,227 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to Washington, D.C.. 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 Antonio to Washington, D.C.?

    Located just 7.6 mi from the city center, San Antonio is the airport most travelers will use when flying to Washington, D.C. from San Antonio. Booking flights from San Antonio (SAT) to Washington, D.C. should be relatively easy as there are 7 daily outbound flights to Washington, D.C. from 5 different airlines.

  • How long is the flight from San Antonio to Washington, D.C.?

    A quick flight from San Antonio to Washington, D.C. can take about 3h 20m. Southwest provides one of the quickest options available for as low as $304. San Antonio and Washington, D.C. are separated by a distance of 1360 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Antonio to Washington, D.C. round-trip?

    Frontier, at $143, was found to be the cheapest airline from San Antonio to Washington, D.C..Alternate airlines to your destination round-trip include American Airlines and Southwest. You may be able to fly from San Antonio to Washington, D.C. for 61% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from San Antonio to Washington, D.C. one-way?

    One-way options have recently been found by users for as low as $80 on Southwest. Other airlines that offer cheap prices include Delta from $83 and United Airlines from $134 one-way.

  • What are the most popular routes from San Antonio to Washington, D.C.?

    When deciding which route to take from San Antonio to Washington, D.C. consider San Antonio - Washington, D.C. Dulles Intl, San Antonio - Washington, D.C. Reagan-National or San Antonio - Baltimore/Washington as they are the most popular.

  • What are the most reliable airlines from San Antonio to Washington, D.C.?

    Before booking your flight to Washington, D.C. from San Antonio, check out the most reliable airlines to get you to your destination on time: Air Canada (92%), Lufthansa (92%), Brussels Airlines( 90%).

  • What are the cheapest flights from San Antonio to Washington, D.C.?

    While on average a flight from San Antonio to Washington, D.C. is generally $1,717, our data shows the cheapest flight currently is $177. When looking at the most popular route, (San Antonio - Washington, D.C. Dulles Intl), you can expect to pay $265 for that flight.

  • Can I find deals for flights from San Antonio to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on San Antonio to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to Washington, D.C..

  • Can I find deals for business class flights from San Antonio to Washington, D.C.?

    Yes. Cheapflights offers flight deals from San Antonio to Washington, D.C. 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 Antonio to Washington, D.C.?

    Currently, February is the cheapest month in which you can book a flight from San Antonio to Washington, D.C. (average of $329). Flying from San Antonio to Washington, D.C. in March is currently the most expensive (average of $461). 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Owings Mills
Arlington
Tysons
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge
Largo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from San Antonio to Washington, D.C.

Discover the top 5 airlines that operate flights from San Antonio to Washington, D.C.. 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 July 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$247FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$185Average$422FlexibilityNo cancel feeOn-time71%
DeltaCheapest$210Average$383FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$226Average$430FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$249Average$410FlexibilityNo cancel feeOn-time69%

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