Chicago

$109+ Cheap flights from Portland (PDX) to Chicago (CHI)

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CHI
Nov 28 — Dec 51
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Chicago 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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Chicago are usually found in August or September, booked 77 days in advance, depart on a Friday or Wednesday and return on a Wednesday

Find flight deals from Portland to Chicago

Cheapest flights from Portland to Chicago
Explore the most affordable flight options available from Portland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:52 pmPDX - ORD
1 stop9h 23mFrontier
Thu 12/47:00 amORD - PDX
1 stop6h 56mFrontier
Deal found 10/28$226
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:28 pmPDX - ORD
Nonstop4h 18mAmerican Airlines
Sat 12/69:57 amORD - PDX
Nonstop4h 41mAmerican Airlines
Deal found 10/27$227
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:26 pmPDX - ORD
1 stop24h 13mFrontier
Thu 12/47:00 amORD - PDX
1 stop30h 56mFrontier
Deal found 10/28$228
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:26 pmPDX - MDW
1 stop18h 04mFrontier
Thu 11/612:30 pmMDW - PDX
1 stop25h 26mFrontier
Deal found 10/26$228
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:26 pmPDX - ORD
1 stop24h 13mFrontier
Fri 11/1410:43 pmORD - PDX
2 stops39h 13mFrontier
Deal found 10/28$229
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:26 pmPDX - ORD
1 stop6h 49mFrontier
Wed 11/126:05 pmORD - PDX
1 stop19h 51mFrontier
Deal found 10/28$230
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:51 pmPDX - ORD
1 stop9h 21mFrontier
Mon 12/156:50 amORD - PDX
1 stop11h 47mFrontier
Deal found 10/27$231
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/711:59 pmPDX - ORD
Nonstop3h 53mUnited Airlines
Tue 12/96:00 amORD - PDX
1 stop8h 12mUnited Airlines
Deal found 10/27$233
This Priceline deal was found by Cheapflights users on 10/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:26 pmPDX - ORD
1 stop6h 49mFrontier
Sun 11/166:00 amORD - PDX
1 stop7h 56mFrontier
Deal found 10/28$234
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/139:48 amPDX - ORD
1 stop12h 25mFrontier
Sun 12/145:13 pmORD - PDX
2 stops17h 23mFrontier
Deal found 10/28$235
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/181:38 pmPDX - ORD
1 stop8h 46mAlaska Airlines
Wed 11/198:00 amORD - PDX
1 stop6h 38mAlaska Airlines
Deal found 10/28$236
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 12/310:10 pmPDX - ORD
1 stop8h 29mDelta
Tue 12/91:20 pmORD - PDX
1 stop10h 59mDelta
Deal found 10/27$237

Cheap flight deals from Portland to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Chicago (CHI). 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 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$226
(Frontier)

One-way from

$109
(United Airlines)

Popular in

March

Cheapest in

August

Average price

$339

Good round-trip deal

$334 or less

Good one-way deal

$177 or less
Provider with most accurate pricing for Portland-Chicago (CHI) flight deals.
Provider most trusted by Cheapflights users for Portland-Chicago (CHI) flights.
From Portland to Chicago (CHI)
One-way flight from Portland to Chicago (CHI)
Highest demand for flights based on searches. 9% potential increase in price ($34 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Portland to Chicago (CHI).
Price to beat on a one-way flight from Portland to Chicago (CHI).

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Chicago 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 29, 2025.
Use the filters below to find and compare flights from Portland to Chicago that are best for you.

Fly from

Portland

Fly to

Chicago

Route

Depart

Return

Price

PortlandChicago

PDX - ORD

PDXORD

Portland

Sun 12/7

11:59 pm-5:52 am

Nonstop3h 53m

Chicago O'Hare Intl

Tue 12/9

4:10 pm-6:45 pm

Nonstop4h 35m

$227

PortlandChicago

PDX - ORD

PDXORD

Portland

Wed 12/10

11:59 pm-5:52 am

Nonstop3h 53m

Chicago O'Hare Intl

Mon 12/15

7:37 pm-10:15 pm

Nonstop4h 38m

$227

PortlandChicago

PDX - ORD

PDXORD

Portland

Wed 12/10

7:04 am-1:09 pm

Nonstop4h 05m

Chicago O'Hare Intl

Mon 12/15

8:00 am-1:50 pm

1 stop7h 50m

$237

PortlandChicago

PDX - ORD

PDXORD

Portland

Mon 12/8

12:32 am-8:40 am

1 stop6h 08m

Chicago O'Hare Intl

Tue 12/16

7:20 am-12:40 pm

1 stop7h 20m

$237

PortlandChicago

PDX - ORD

PDXORD

Portland

Tue 12/9

12:32 am-8:40 am

1 stop6h 08m

Chicago O'Hare Intl

Tue 12/16

6:00 am-12:54 pm

1 stop8h 54m

$237

PortlandChicago

PDX - ORD

PDXORD

Portland

Fri 12/12

12:32 am-10:33 am

1 stop8h 01m

Chicago O'Hare Intl

Tue 12/16

7:20 am-12:40 pm

1 stop7h 20m

$237

PortlandChicago

PDX - ORD

PDXORD

Portland

Fri 1/16

11:59 pm-6:00 am

Nonstop4h 01m

Chicago O'Hare Intl

Tue 1/20

8:45 am-1:45 pm

1 stop7h 00m

$237

PortlandChicago

PDX - ORD

PDXORD

Portland

Fri 2/27

8:40 am-5:50 pm

1 stop7h 10m

Chicago O'Hare Intl

Mon 3/2

2:05 pm-4:39 pm

Nonstop4h 34m

$247

PortlandChicago

PDX - ORD

PDXORD

Portland

Tue 3/10

7:00 am-1:04 pm

Nonstop4h 04m

Chicago O'Hare Intl

Wed 3/11

2:05 pm-4:39 pm

Nonstop4h 34m

$247

PortlandChicago

PDX - ORD

PDXORD

Portland

Sun 1/11

1:30 pm-11:53 pm

1 stop8h 23m

Chicago O'Hare Intl

Wed 1/14

7:30 am-12:44 pm

1 stop7h 14m

$247

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 51 results
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Compare providers for flights from Portland to Chicago

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 Portland to Chicago in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice 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 Portland-Chicago flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Chicago flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Chicago 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 Portland-Chicago 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 Portland to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Portland 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 Portland to Chicago

How far ahead should I book a flight from Portland to Chicago?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Chicago. Price data was last updated on October 24, 2025.

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Chicago. 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 Portland to Chicago?

Currently, August is the cheapest month in which you can book a flight from Portland to Chicago (average of $120). Flying from Portland to Chicago in March is currently the most expensive (average of $256). 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 PDX to CHI?

Find hourly flight availability from Portland to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Portland to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Portland to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Portland to Chicago. Price data was last updated on October 26, 2025.

Travelers seeking maximum savings on their Portland to Chicago flight should consider departing on Saturday 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 Portland to Chicago 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 Portland to Chicago trip
Airlines
United Airlines

Basic Economy allows a personal item only; no carry-on bags unless exceptions apply.


Economy Plus offers extra legroom and is free for MileagePlus Premier members.

Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails.


Alaska's Wi-Fi is available for a flat fee, ideal for business travelers.

Spirit Airlines

Spirit's Big Front Seats provide 11 inches more legroom, ideal for comfort.


Use Spirit's Bag-O-Tron tool to compare baggage fees and save money.

Airports
PDX

Expect security wait times up to 15 minutes off-peak, and over 30 minutes during rush hours. Use Express Lanes if eligible for faster processing.

Read more about PDXby Brandon Schultz
ORD

Take the “L” train from ORD to downtown Chicago for a reliable and cost-effective option. Avoid traffic delays common with taxis or rideshares.

Read more about ORDby Ramsey Qubein
MDW

Use the Orange Line train from MDW to reach downtown Chicago in under 30 minutes, offering a cheap and convenient travel option.

Read more about MDWby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

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
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD and MDW

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
Brandon Schultz

Brandon Schultz

Expert on PDX

Brandon Schultz

Brandon Schultz

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

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated October 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and United Airlines from Portland to Chicago. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Entertainment

7.0

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Portland to Chicago. 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 Portland to Chicago?

    For a flight from Portland to Chicago, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 13 outbound flights to Chicago per day. 8 airlines have flights to Chicago from Portland on a regular basis.

  • How long is the flight from Portland to Chicago?

    For as low as $227, United Airlines can have you in Chicago from Portland in 3h 53m. Airlines will cover a distance of 1733 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 Portland to Chicago round-trip?

    Frontier, at $94, was found to be the cheapest airline from Portland to Chicago.Alternate airlines to your destination round-trip include Spirit Airlines and Delta. You may be able to fly from Portland to Chicago for 72% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Portland to Chicago one-way?

    $114 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $118 and $119, respectively.

  • What are the most popular routes from Portland to Chicago?

  • What are the most reliable airlines from Portland to Chicago?

    Consider Brussels Airlines (92%), SWISS (82%) or Alaska Airlines (82%) when booking your flight. These represent the most reliable airlines when flying from Portland to Chicago.

  • What are the cheapest flights from Portland to Chicago?

    While on average a flight from Portland to Chicago is generally $914, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Portland - Chicago O'Hare Intl), you can expect to pay $192 for that flight.

  • Can I find deals for flights from Portland to Chicago that include hotel bookings?

    Yes. In addition to deals on Portland to Chicago flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Chicago.

  • Can I find deals for business class flights from Portland to Chicago?

    Yes. Cheapflights offers flight deals from Portland to Chicago 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 Portland to Chicago?

    Currently, August is the cheapest month in which you can book a flight from Portland to Chicago (average of $120). Flying from Portland to Chicago in March is currently the most expensive (average of $256). 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 Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
Lansing
Hammond
Porter
Benton Harbor

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Top 8 airlines flying from Portland to Chicago

Discover the top 8 airlines that operate flights from Portland to Chicago. 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$280FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$119Average$194FlexibilityNo cancel feeOn-time65%
DeltaCheapest$123Average$333FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$125Average$284FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$194Average$321FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$197Average$322FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$224Average$385FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$246Average$404FlexibilityNo cancel feeOn-time63%

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