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$53+ Cheap flights from Sky Harbor Intl (PHX) to Denver (DEN)

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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — DEN
Apr 15 — Apr 221
Mi 4/15
Mi 4/22
1 adult, Economy
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Find cheap flights from Sky Harbor Intl to Denver 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 Phoenix Sky Harbor Intl to Denver Intl are usually found in February or October, booked 69 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Sky Harbor Intl to Denver

Cheapest flights from Sky Harbor Intl to Denver
Explore the most affordable flight options available from Sky Harbor Intl to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on März 16, 2026.

This Super.com deal was found by Cheapflights users on 3/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/139:24 pm
PHX
-
DEN
Nonstop1h 56m
Frontier
Mi 4/1510:35 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/11$72
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 4/2212:50 pm
PHX
-
DEN
Nonstop1h 55m
Frontier
Mo 4/277:11 pm
DEN
-
PHX
Nonstop2h 05m
Frontier
Deal found 3/13$73
This Super.com 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/259:52 am
PHX
-
DEN
Nonstop2h 03m
Frontier
Di 4/2810:35 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/16$76
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/259:52 am
PHX
-
DEN
Nonstop2h 03m
Frontier
Mi 4/2910:35 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/16$77
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Mo 4/139:24 pm
PHX
-
DEN
Nonstop1h 56m
Frontier
Mo 4/207:11 pm
DEN
-
PHX
Nonstop2h 05m
Frontier
Deal found 3/13$79
This Super.com deal was found by Cheapflights users on 3/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 4/166:50 am
PHX
-
DEN
Nonstop1h 53m
Frontier
Di 4/2110:35 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/13$81
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 4/36:52 pm
PHX
-
DEN
Nonstop1h 53m
Frontier
Di 4/2110:35 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/12$82
This iWofly deal was found by Cheapflights users on 3/12. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/126:53 pm
PHX
-
DEN
Nonstop1h 58m
Frontier
Fr 5/1510:36 pm
DEN
-
PHX
Nonstop1h 55m
Frontier
Deal found 3/12$84
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Sa 5/26:50 am
PHX
-
DEN
Nonstop1h 53m
Frontier
So 5/36:30 am
DEN
-
PHX
Nonstop2h 06m
Frontier
Deal found 3/12$86
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/136:53 pm
PHX
-
DEN
Nonstop1h 58m
Frontier
So 5/1710:36 pm
DEN
-
PHX
Nonstop1h 55m
Frontier
Deal found 3/13$87
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/78:52 am
PHX
-
DEN
Nonstop1h 59m
Frontier
Fr 5/810:40 pm
DEN
-
PHX
Nonstop2h 07m
Frontier
Deal found 3/12$88

Find flight deals from Sky Harbor Intl to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Denver (DEN). 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 März 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$72
(Super.com)

One-way from

$53
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$191

Good round-trip deal

$167 or less

Good one-way deal

$126 or less
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Denver Intl flights.
Search Deals
From Phoenix Sky Harbor Intl to Denver Intl
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Denver Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 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 Phoenix Sky Harbor Intl to Denver Intl.
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Denver 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 März 16, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sa 5/2

4:39 pm-7:35 pm

Nonstop1h 56m

Denver Intl

Sa 5/9

7:15 pm-8:19 pm

Nonstop2h 04m

$177

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mi 5/13

6:00 am-12:19 pm

1 stop5h 19m

Denver Intl

Mi 5/13

6:19 pm-11:29 pm

1 stop6h 10m

$197

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Sa 4/25

5:30 pm-11:19 pm

1 stop4h 49m

Denver Intl

Sa 5/2

7:25 am-11:28 am

1 stop5h 03m

$217

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Di 5/12

10:26 am-5:35 pm

1 stop6h 09m

Denver Intl

Di 5/19

6:30 pm-11:54 pm

1 stop6h 24m

$217

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mi 5/13

10:26 am-5:35 pm

1 stop6h 09m

Denver Intl

So 5/17

7:25 am-11:25 am

1 stop5h 00m

$237

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Do 4/9

5:45 am-11:05 am

1 stop4h 20m

Denver Intl

Di 4/14

8:55 am-2:00 pm

2 stops6h 05m

$252

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Mi 5/20

6:20 am-11:40 am

1 stop4h 20m

Denver Intl

Mi 5/27

8:55 am-2:00 pm

2 stops6h 05m

$262

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Di 4/21

11:00 am-3:05 pm

1 stop3h 05m

Denver Intl

Di 4/28

8:55 am-2:00 pm

2 stops6h 05m

$263

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Do 4/2

7:30 am-12:20 pm

1 stop3h 50m

Denver Intl

Di 4/7

8:55 am-2:00 pm

2 stops6h 05m

$283
Quickest round-trip

PhoenixDenver

PHX - DEN

PHXDEN

Phoenix Sky Harbor Intl

Do 6/4

7:30 pm-10:20 pm

Nonstop1h 50m

Denver Intl

So 6/7

6:05 am-6:55 am

Nonstop1h 50m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 21 resultsSorted by cheapest first
1
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3

Compare providers for flights from Sky Harbor Intl to Denver

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 Sky Harbor Intl to Denver in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Super.comPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Phoenix Sky Harbor Intl Airport-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Denver 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 Phoenix Sky Harbor Intl Airport-Denver 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 Sky Harbor Intl to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Sky Harbor Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Denver

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Denver. Price data was last updated on March 13, 2026.

The best time to book flights from Phoenix Sky Harbor Intl Airport to Denver is 69 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Denver?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Denver (average of $58). Flying from Phoenix Sky Harbor Intl Airport to Denver in July is currently the most expensive (average of $103). 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 PHX to DEN?

Find hourly flight availability from Sky Harbor Intl to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated März 16, 2026.

It’s optimal to fly from Phoenix Sky Harbor Intl Airport to Denver in the evening. By choosing this option you can save up to 54% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Denver?

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Denver. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Denver flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Phoenix Sky Harbor Intl Airport to Denver 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 Phoenix Sky Harbor Intl Airport to Denver trip
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and Southwest

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Brandon Schultz

Brandon Schultz

Expert on PHX

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated März 16, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from Phoenix Sky Harbor Intl Airport to Denver 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
4,318 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,318 reviews
Southwest
8.0
Very good
4,318 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,428 reviews
Southwest
8.0
Very good
4,318 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.1
Good
11,466 reviews
Southwest
8.0
Very good
4,318 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,030 reviews
Southwest
8.0
Very good
4,318 reviews

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from Phoenix Sky Harbor Intl?

    Located just 18.5 mi from the city center, Denver Intl is the airport most travelers will use when flying to Denver from Phoenix Sky Harbor Intl. Booking flights from Phoenix Sky Harbor Intl to Denver Intl (DEN) should be relatively easy as there are 49 daily inbound flights from Phoenix Sky Harbor Intl from 4 different airlines.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Denver?

    Airlines like United Airlines and Delta fly from Phoenix Sky Harbor Intl Airport to Denver in about 1h 56m. The time it takes to get you to your destination can typically vary by up to 3h 23m. The distance between Phoenix Sky Harbor Intl Airport and Denver is about 601 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Phoenix Sky Harbor Intl Airport to Denver round-trip?

    Frontier, at $63, was found to be the cheapest airline from Phoenix Sky Harbor Intl Airport to Denver.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Frontier is priced at 64% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Denver one-way?

    One-way options have recently been found by users for as low as $37 on Frontier. Other airlines that offer cheap prices include American Airlines from $68 and Southwest from $78 one-way.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Denver?

    No one likes to see their flight delayed. When booking a flight from Phoenix Sky Harbor Intl Airport to Denver consider choosing Lufthansa (91%), Air Canada (86%) or Envoy Air (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Phoenix Sky Harbor Intl Airport to Denver?

    The cheapest flight price from Phoenix Sky Harbor Intl Airport to Denver is $62. On average you can expect to pay $804. The most popular route, (Phoenix Sky Harbor Intl - Denver Intl), can usually be booked for $66.

  • Can I find deals for flights from Sky Harbor Intl to Denver that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Denver?

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

  • Can I find deals for business class flights from Sky Harbor Intl to Denver?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Denver 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 Phoenix Sky Harbor Intl Airport to Denver?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Denver (average of $58). Flying from Phoenix Sky Harbor Intl Airport to Denver in July is currently the most expensive (average of $103). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Glendale
Manitou Springs
Frisco
Englewood
Fort Morgan
Brighton

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Sky Harbor Intl to Denver

Discover the top 4 airlines that operate flights from Sky Harbor Intl to Denver. 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 März 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$63Average$151FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$137Average$263FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$137Average$224FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$149Average$247FlexibilityNo cancel feeOn-time63%

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