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Washington, D.C.

$30+ Cheap flights from Knoxville (TYS) 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — WAS
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
1 adult, Economy
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Find cheap flights from Knoxville to Washington, D.C. 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Washington, D.C. are usually found in January or February, booked 79 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Knoxville to Washington, D.C.

Cheapest flights from Knoxville to Washington, D.C.
Explore the most affordable flight options available from Knoxville to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/18. 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.
Thu 4/911:27 am
TYS
-
IAD
Nonstop1h 44m
Allegiant Air
Thu 4/162:01 pm
IAD
-
TYS
Nonstop1h 40m
Allegiant Air
Deal found 3/18$79
This Kiwi.com deal was found by Cheapflights users on 3/18. 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.
Thu 4/911:27 am
TYS
-
IAD
Nonstop1h 44m
Allegiant Air
Sun 4/122:01 pm
IAD
-
TYS
Nonstop1h 40m
Allegiant Air
Deal found 3/18$84
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/28:20 am
TYS
-
IAD
Nonstop1h 44m
Allegiant Air
Sun 4/512:56 pm
IAD
-
TYS
Nonstop1h 40m
Allegiant Air
Deal found 3/20$111
This Kiwi.com deal was found by Cheapflights users on 3/18. 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.
Thu 4/1612:37 pm
TYS
-
IAD
1 stop26h 07m
Allegiant Air
Sun 4/192:01 pm
IAD
-
TYS
Nonstop1h 40m
Allegiant Air
Deal found 3/18$124
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Thu 4/1612:37 pm
TYS
-
IAD
1 stop26h 07m
Allegiant Air
Thu 4/232:01 pm
IAD
-
TYS
Nonstop1h 40m
Allegiant Air
Deal found 3/19$126
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
TYS
-
DCA
Nonstop1h 42m
American Airlines
Tue 5/267:45 pm
DCA
-
TYS
Nonstop1h 46m
American Airlines
Deal found 3/17$179
This Southwest deal was found by Cheapflights users on 3/18. 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 5/278:15 am
TYS
-
BWI
Nonstop1h 45m
Southwest
Wed 6/37:05 pm
BWI
-
TYS
Nonstop1h 45m
Southwest
Deal found 3/18$179
This American Airlines deal was found by Cheapflights users on 3/18. 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 4/86:00 am
TYS
-
DCA
Nonstop1h 42m
American Airlines
Sat 4/111:48 pm
DCA
-
TYS
Nonstop1h 51m
American Airlines
Deal found 3/18$185
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/78:15 am
TYS
-
BWI
Nonstop1h 45m
Southwest
Tue 4/147:05 pm
BWI
-
TYS
Nonstop1h 45m
Southwest
Deal found 3/16$191
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/78:15 am
TYS
-
BWI
Nonstop1h 45m
Southwest
Wed 4/86:40 am
BWI
-
TYS
1 stop5h 20m
Southwest
Deal found 3/16$195
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:50 pm
TYS
-
BWI
1 stop6h 10m
Southwest
Tue 4/2110:00 am
BWI
-
TYS
1 stop7h 10m
Southwest
Deal found 3/16$199
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
TYS
-
DCA
Nonstop1h 42m
American Airlines
Sun 5/39:15 am
DCA
-
TYS
Nonstop1h 46m
American Airlines
Deal found 3/17$204

Find flight deals from Knoxville to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) 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 March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$79
(Kiwi.com)

One-way from

$30
(Kiwi.com)

Popular in

September

Cheapest in

January

Average price

$240

Good round-trip deal

$286 or less

Good one-way deal

$138 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Washington, D.C. (WAS) flights.
Search Deals
From Knoxville McGhee Tyson to Washington, D.C. (WAS)
Search Deals
One-way flight from Knoxville McGhee Tyson to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Knoxville McGhee Tyson to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Knoxville McGhee Tyson to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville 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 March 21, 2026.
Use the filters below to find and compare flights from Knoxville to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Wed 5/27

12:50 pm-8:05 pm

2 stops7h 15m

Baltimore/Washington

Wed 6/3

7:05 pm-8:50 pm

Nonstop1h 45m

$194

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Wed 5/13

12:50 pm-7:00 pm

1 stop6h 10m

Baltimore/Washington

Mon 5/18

7:30 pm-9:15 pm

Nonstop1h 45m

$201

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Tue 4/14

12:50 pm-7:00 pm

1 stop6h 10m

Baltimore/Washington

Tue 4/21

10:35 am-7:40 pm

2 stops9h 05m

$204

KnoxvilleWashington, D.C.

TYS - DCA

TYSDCA

Knoxville McGhee Tyson

Sat 5/2

6:40 am-12:15 pm

1 stop5h 35m

Washington, D.C. Reagan-National

Sat 5/9

10:40 am-6:30 pm

2 stops7h 50m

$216
Quickest round-trip

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Thu 4/9

8:05 am-9:50 am

Nonstop1h 45m

Baltimore/Washington

Sun 4/12

8:15 pm-10:00 pm

Nonstop1h 45m

$224

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Fri 4/24

6:45 pm-10:35 pm

1 stop3h 50m

Baltimore/Washington

Mon 4/27

7:30 pm-9:15 pm

Nonstop1h 45m

$234

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Thu 4/16

6:45 pm-10:35 pm

1 stop3h 50m

Baltimore/Washington

Sun 4/19

8:15 pm-10:00 pm

Nonstop1h 45m

$234

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Tue 6/30

8:20 am-1:57 pm

1 stop5h 37m

Baltimore/Washington

Tue 7/7

5:32 pm-12:35 am

1 stop7h 03m

$237

KnoxvilleBaltimore

TYS - BWI

TYSBWI

Knoxville McGhee Tyson

Fri 5/1

8:05 am-9:50 am

Nonstop1h 45m

Baltimore/Washington

Sun 5/3

8:15 pm-10:00 pm

Nonstop1h 45m

$237

KnoxvilleWashington, D.C.

TYS - IAD

TYSIAD

Knoxville McGhee Tyson

Fri 4/24

7:00 pm-12:42 am

1 stop5h 42m

Washington, D.C. Dulles Intl

Mon 4/27

5:27 pm-9:40 pm

1 stop4h 13m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 59 resultsSorted by cheapest first
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Compare providers for flights from Knoxville 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 Knoxville to Washington, D.C. in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Knoxville-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 Knoxville-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-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 Knoxville-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 Knoxville to Washington, D.C.

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

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

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Washington, D.C.. Price data was last updated on March 13, 2026.

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $44). Flying from Knoxville to Washington, D.C. in November is currently the most expensive (average of $90). 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 TYS to WAS?

Find hourly flight availability from Knoxville 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 March 21, 2026.

It’s typically best to fly out from Knoxville to Washington, D.C. in the afternoon. Doing so could potentially save you 66% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Knoxville to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Washington, D.C.. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Knoxville to Washington, D.C. flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Knoxville to Washington, D.C.

Explore weekly flight availability from Knoxville 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 March 21, 2026.

The most flights from TYS to WAS are scheduled on a Thursday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (14 on average).

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 March 21, 2026.
See what other customers who have flown with Southwest,United Airlines, andAllegiant Air from Knoxville to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,325 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,325 reviews
Southwest
8.0
Very good
4,325 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,452 reviews
Southwest
8.0
Very good
4,325 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Allegiant Air
7.3
Good
711 reviews
Southwest
8.0
Very good
4,325 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,488 reviews
Southwest
8.0
Very good
4,325 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

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

    If you book a flight to Washington, D.C. from Knoxville, you will be flying from McGhee Tyson, which is the city’s only airport. Knoxville McGhee Tyson (TYS) is located 11.3 mi from the center of Knoxville. There are 17 flights from McGhee Tyson to Washington, D.C. per day from 5 different airlines.

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

    For as low as $252, Southwest can have you in Washington, D.C. from Knoxville in 1h 45m. The distance from Knoxville to Washington, D.C. is about 419 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Knoxville to Washington, D.C. is Allegiant Air. Our recent data shows that you can find tickets from as low as $43 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $189 and $189 round-trip. Allegiant Air is priced at 82% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $40 on Allegiant Air. Other airlines that offer cheap prices include American Airlines from $94 and United Airlines from $158 one-way.

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

    Most travelers choose Knoxville McGhee Tyson - Baltimore/Washington, Knoxville McGhee Tyson - Washington, D.C. Reagan-National or Knoxville McGhee Tyson - Washington, D.C. Dulles Intl when deciding on the best route from Knoxville to Washington, D.C..

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

    The top 3 most reliable airlines when flying from Knoxville to Washington, D.C. are Allegiant Air (97%), Copa Airlines (80%) and CommutAir (80%).

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

    While on average a flight from Knoxville to Washington, D.C. is generally $984, our data shows the cheapest flight currently is $54. When looking at the most popular route, (Knoxville McGhee Tyson - Baltimore/Washington), you can expect to pay $179 for that flight.

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

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

  • How can I find direct flights from Knoxville 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 Knoxville to Washington, D.C..

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

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

    Currently, October is the cheapest month in which you can book a flight from Knoxville to Washington, D.C. (average of $44). Flying from Knoxville to Washington, D.C. in November is currently the most expensive (average of $90). 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
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park
Cordova

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Knoxville to Washington, D.C.

Discover the top 5 airlines that operate flights from Knoxville 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 March 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$43Average$89FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$189Average$307FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$288FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$217Average$277FlexibilityNo cancel feeOn-time63%
DeltaCheapest$228Average$288FlexibilityNo cancel feeOn-timeN/A

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