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Dulles Intl

$135+ Cheap flights from Salt Lake City (SLC) to Dulles Intl (IAD)

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SLC — IAD
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheapflights Tip: The best prices from Salt Lake City to Washington, D.C. Dulles Intl are usually found in September or July, booked 37 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

Cheap flight deals from Salt Lake City to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Salt Lake City (SLC) to Dulles Intl (IAD). 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$248
(Kiwi.com)

One-way from

$135
(Delta)

Popular in

February

Cheapest in

September

Average price

$429

Good round-trip deal

$338 or less

Good one-way deal

$273 or less
Provider with most accurate pricing for Salt Lake City-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Salt Lake City-Washington, D.C. Dulles Intl flights.
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From Salt Lake City to Washington, D.C. Dulles Intl
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One-way flight from Salt Lake City to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 17% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 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 Salt Lake City to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Salt Lake City to Washington, D.C. Dulles Intl.
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Find flight deals from Salt Lake City to Dulles Intl

Cheapest flights from Salt Lake City to Dulles Intl
Explore the most affordable flight options available from Salt Lake City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This KAYAK deal was found by Cheapflights users on 10/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:14 amSLC - IAD
1 stop8h 16mAlaska Airlines
Tue 12/97:34 amIAD - SLC
1 stop9h 09mAlaska Airlines
Deal found 10/27$269
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:58 pmSLC - IAD
1 stop8h 14mDelta
Sun 12/77:05 amIAD - SLC
Nonstop4h 51mDelta
Deal found 10/27$279
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:30 amSLC - IAD
1 stop6h 15mSouthwest
Sun 12/75:05 amIAD - SLC
1 stop6h 35mSouthwest
Deal found 10/27$289
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:05 pmSLC - IAD
Nonstop3h 53mDelta
Mon 11/247:10 amIAD - SLC
Nonstop4h 48mDelta
Deal found 10/27$294
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:21 amSLC - IAD
2 stops11h 46mAmerican Airlines
Mon 11/242:16 pmIAD - SLC
2 stops11h 43mAmerican Airlines
Deal found 10/26$299
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:25 amSLC - IAD
1 stop8h 27mUnited Airlines
Fri 11/285:55 pmIAD - SLC
Nonstop5h 00mUnited Airlines
Deal found 10/26$303
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:05 pmSLC - IAD
Nonstop3h 53mDelta
Wed 11/197:10 amIAD - SLC
Nonstop4h 48mDelta
Deal found 10/27$304
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:01 pmSLC - IAD
1 stop5h 58mUnited Airlines
Wed 12/36:00 amIAD - SLC
1 stop8h 19mUnited Airlines
Deal found 10/26$307
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/124:00 pmSLC - IAD
1 stop5h 30mSouthwest
Sun 1/47:50 pmIAD - SLC
1 stop6h 40mSouthwest
Deal found 10/26$309
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:17 amSLC - IAD
1 stop7h 56mAlaska Airlines
Tue 11/187:43 amIAD - SLC
1 stop8h 46mAlaska Airlines
Deal found 10/27$313
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:15 pmSLC - IAD
1 stop6h 48mDelta
Wed 11/265:59 pmIAD - SLC
1 stop8h 02mDelta
Deal found 10/27$314

Cheapflights Fare Finder

 
Customize your flight search to find flights from Salt Lake City to Dulles Intl 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 October 28, 2025.
Use the filters below to find and compare flights from Salt Lake City to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Salt Lake City

Fly to

Dulles Intl

Route

Depart

Return

Price

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Fri 11/21

6:05 pm-11:58 pm

Nonstop3h 53m

Washington, D.C. Dulles Intl

Sun 11/23

7:10 am-9:58 am

Nonstop4h 48m

$269

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Wed 12/3

11:35 pm-9:11 am

1 stop7h 36m

Washington, D.C. Dulles Intl

Sun 12/7

7:05 am-9:56 am

Nonstop4h 51m

$279

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Tue 3/10

7:00 am-5:25 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

Wed 3/11

7:00 am-2:20 pm

1 stop9h 20m

$289

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Tue 1/6

2:45 pm-11:22 pm

1 stop6h 37m

Washington, D.C. Dulles Intl

Mon 1/12

8:20 am-1:26 pm

1 stop7h 06m

$289

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Sat 12/6

6:00 am-4:23 pm

1 stop8h 23m

Washington, D.C. Dulles Intl

Sat 12/13

9:00 am-2:15 pm

1 stop7h 15m

$289

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Thu 2/26

6:00 am-4:30 pm

1 stop8h 30m

Washington, D.C. Dulles Intl

Mon 3/2

4:00 pm-11:11 pm

1 stop9h 11m

$289

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Wed 11/12

6:05 pm-11:58 pm

Nonstop3h 53m

Washington, D.C. Dulles Intl

Wed 11/19

7:10 am-9:58 am

Nonstop4h 48m

$294

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Wed 11/26

8:25 am-6:52 pm

1 stop8h 27m

Washington, D.C. Dulles Intl

Fri 11/28

5:55 pm-8:55 pm

Nonstop5h 00m

$303

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Sat 11/15

7:00 am-4:30 pm

1 stop7h 30m

Washington, D.C. Dulles Intl

Wed 11/19

5:55 pm-8:55 pm

Nonstop5h 00m

$304

Salt Lake CityWashington, D.C.

SLC - IAD

SLCIAD

Salt Lake City

Thu 11/13

1:59 pm-11:52 pm

1 stop7h 53m

Washington, D.C. Dulles Intl

Mon 11/17

7:10 am-9:58 am

Nonstop4h 48m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 22 results
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Compare providers for flights from Salt Lake City to Dulles Intl

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 Salt Lake City to Dulles Intl in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Salt Lake City-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Salt Lake City-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Salt Lake City-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Salt Lake City-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Salt Lake City-Washington, D.C. Dulles Intl 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 Salt Lake City to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Salt Lake City 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 Salt Lake City to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Salt Lake City to Dulles Intl. Price data was last updated on October 24, 2025.

Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights from Salt Lake City to Washington, D.C. Dulles Intl Airport. 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 Salt Lake City to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport (average of $165). Flying from Salt Lake City to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $339). 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 SLC to IAD?

Find hourly flight availability from Salt Lake City to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

It’s optimal to fly from Salt Lake City to Washington, D.C. Dulles Intl Airport at noon. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Salt Lake City to Dulles Intl. Price data was last updated on October 26, 2025.

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

The best insider tips for Salt Lake City to Washington, D.C. Dulles Intl Airport 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 Salt Lake City to Washington, D.C. Dulles Intl Airport trip
Airports
SLC

After security, enjoy local dining at The Plaza, featuring Utah craft beer and Mexican tacos.

Read more about SLCby Ramsey Qubein
IAD

Use the Silver Line Metro for a cheap, 40-minute ride to downtown D.C. from IAD.

Read more about IADby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on SLC and 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 Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated October 28, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Salt Lake City to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
7,996 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,997 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,033 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,236 reviews

Food

7.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

Comfort

8.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

    Located just 5.7 mi from the city center, Salt Lake City is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Salt Lake City. Booking flights from Salt Lake City (SLC) to Washington, D.C. Dulles Intl should be relatively easy as there are 4 daily outbound flights to Washington, D.C. Dulles Intl from 5 different airlines.

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

    There are many flights that can get you from Salt Lake City to Washington, D.C. Dulles Intl Airport in 3h 53m. Fly via Delta or Alaska Airlines to get the fastest option. Airlines will cover a distance of 1823 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 Salt Lake City to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Salt Lake City to Washington, D.C. Dulles Intl Airport round-trip from $178. Other airlines that can offer you cheap pricing are United Airlines, from $269, and Delta, from $269. You may be able to fly from Salt Lake City to Washington, D.C. Dulles Intl Airport for 60% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Salt Lake City to Washington, D.C. Dulles Intl Airport are United Airlines ($135), Delta ($135), and Alaska Airlines ($144).

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

    No one likes to see their flight delayed. When booking a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport consider choosing Lufthansa (95%), Delta (87%) or Korean Air (86%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport is generally $429, our data shows the cheapest flight currently is $134. When looking at the most popular route, (Salt Lake City - Washington, D.C. Dulles Intl), you can expect to pay $269 for that flight.

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

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

  • How can I find direct flights from Salt Lake City to Dulles Intl?

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

  • Can I find deals for business class flights from Salt Lake City to Dulles Intl?

    Yes. Cheapflights offers flight deals from Salt Lake City to Dulles Intl 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 Salt Lake City to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport (average of $165). Flying from Salt Lake City to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $339). 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. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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Top 5 airlines flying from Salt Lake City to Dulles Intl

Discover the top 5 airlines that operate flights from Salt Lake City to Dulles Intl. 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$178Average$229FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$269Average$414FlexibilityNo cancel feeOn-time69%
DeltaCheapest$269Average$470FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$513FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$288Average$416FlexibilityNo cancel feeOn-time63%

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