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$130+ Cheap flights from Seattle to Baltimore (SEA - BWI)

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Find cheap flights from Seattle to Baltimore 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 Seattle/Tacoma Intl to Baltimore/Washington are usually found in October or September, booked 85 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Seattle to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Baltimore (BWI). 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 abril 29, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$228
(Frontier)

One-way from

$130
(Frontier)

Popular in

December

Cheapest in

October

Average price

$417
Provider with most accurate pricing for Seattle/Tacoma Intl-Baltimore/Washington flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Baltimore/Washington flights.
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From Seattle/Tacoma Intl to Baltimore/Washington
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One-way flight from Seattle/Tacoma Intl to Baltimore/Washington
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Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Baltimore

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

This Priceline deal was found by Cheapflights users on 4/28. 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.
vie. 5/96:00 amSEA - BWI
1 stop8h 22mMultiple Airlines
mar. 5/137:17 amBWI - SEA
1 stop10h 08mMultiple Airlines
Deal found 4/28$234
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/123:20 pmSEA - BWI
1 stop11h 50mSpirit Airlines
jue. 5/156:20 amBWI - SEA
2 stops20h 50mSpirit Airlines
Deal found 4/28$236
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/711:59 pmSEA - BWI
1 stop7h 51mDelta
jue. 8/147:20 amBWI - SEA
1 stop10h 23mDelta
Deal found 4/26$243
This Frontier deal was found by Cheapflights users on 4/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/266:25 amSEA - BWI
1 stop7h 03mFrontier
sáb. 5/315:48 pmBWI - SEA
1 stop9h 49mFrontier
Deal found 4/27$250
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
sáb. 5/3110:27 pmSEA - BWI
Nonstop5h 02mAlaska Airlines
mar. 6/37:49 amBWI - SEA
Nonstop5h 51mAlaska Airlines
Deal found 4/28$282
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
sáb. 6/710:27 pmSEA - BWI
Nonstop5h 02mHawaiian Airlines
mar. 6/107:05 pmBWI - SEA
Nonstop5h 55mHawaiian Airlines
Deal found 4/28$295
This American Airlines deal was found by Cheapflights users on 4/27. 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.
vie. 5/301:10 amSEA - BWI
1 stop10h 27mAmerican Airlines
sáb. 6/74:38 pmBWI - SEA
1 stop9h 17mAmerican Airlines
Deal found 4/27$312
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/267:00 pmSEA - BWI
1 stop7h 10mUnited Airlines
dom. 6/297:00 pmBWI - SEA
1 stop8h 59mUnited Airlines
Deal found 4/28$323
This Sun Country Air deal was found by Cheapflights users on 4/27. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/246:24 pmSEA - BWI
1 stop13h 59mSun Country Air
dom. 6/2912:25 pmBWI - SEA
1 stop22h 37mSun Country Air
Deal found 4/27$330
This Southwest deal was found by Cheapflights users on 4/27. 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.
mié. 5/283:55 pmSEA - BWI
1 stop10h 55mSouthwest
mié. 6/185:40 pmBWI - SEA
2 stops9h 25mSouthwest
Deal found 4/27$357

Cheapflights Fare Finder

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

Fly from

Seattle

Fly to

Baltimore

Route

Depart

Return

Price

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

vie. 5/9

6:00 am-5:22 pm

1 stop8h 22m

Baltimore/Washington

mar. 5/13

7:17 am-2:25 pm

1 stop10h 08m

$234

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

lun. 5/12

3:20 pm-6:10 am

1 stop11h 50m

Baltimore/Washington

jue. 5/15

6:20 am-12:10 am

2 stops20h 50m

$236

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

jue. 8/7

11:59 pm-10:50 am

1 stop7h 51m

Baltimore/Washington

jue. 8/14

7:20 am-2:43 pm

1 stop10h 23m

$243

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

lun. 5/26

6:25 am-4:28 pm

1 stop7h 03m

Baltimore/Washington

sáb. 5/31

5:48 pm-12:37 am

1 stop9h 49m

$250

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

sáb. 5/31

10:27 pm-6:29 am

Nonstop5h 02m

Baltimore/Washington

lun. 6/2

7:05 pm-10:00 pm

Nonstop5h 55m

$282

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

sáb. 6/7

10:27 pm-6:29 am

Nonstop5h 02m

Baltimore/Washington

mar. 6/10

7:05 pm-10:00 pm

Nonstop5h 55m

$295

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

vie. 5/30

1:10 am-2:37 pm

1 stop10h 27m

Baltimore/Washington

sáb. 6/7

4:38 pm-10:55 pm

1 stop9h 17m

$312

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

jue. 6/26

7:00 pm-5:10 am

1 stop7h 10m

Baltimore/Washington

dom. 6/29

7:00 pm-12:59 am

1 stop8h 59m

$323

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

mar. 6/24

6:24 pm-11:23 am

1 stop13h 59m

Baltimore/Washington

dom. 6/29

12:25 pm-8:02 am

1 stop22h 37m

$330

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

mié. 5/28

3:55 pm-5:50 am

1 stop10h 55m

Baltimore/Washington

mié. 6/18

5:40 pm-12:05 am

2 stops9h 25m

$357

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 20 results
1
2

Compare providers for flights from Seattle to Baltimore

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 Seattle to Baltimore in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FareScanPrice Accuracy-Trust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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 Seattle-Baltimore flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Seattle-Baltimore flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from Seattle-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Baltimore flights, Cheapflights users trust Mytrip the most. Mytrip 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 Seattle-Baltimore 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 Seattle to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Seattle 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 Seattle to Baltimore

How far ahead should I book a flight from Seattle to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Baltimore. Price data was last updated on April 25, 2025.

The best time to book flights from Seattle to Baltimore is 85 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 Seattle to Baltimore?

Currently, August is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $241). Flying from Seattle to Baltimore in March is currently the most expensive (average of $290). 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 SEA to BWI?

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

One of the essential ways to save on airfare from Seattle to Baltimore is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 29% on airfare.

What is the cheapest day to fly from Seattle to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Baltimore. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Seattle to Baltimore flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Baltimore

Explore weekly flight availability from Seattle to Baltimore. 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 abril 29, 2025.

The most flights from SEA to BWI are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Baltimore by month

Plan your trip to Baltimore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

Temperature in Baltimore by month

Plan your trip to Baltimore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. 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 Baltimore. Reviews last updated abril 29, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Baltimore to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,292 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

Related info for your journey

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

  • What airports do I use to fly from Seattle to Baltimore?

    Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 8 different airlines. 4h 59m is how long a flight from Seattle to Baltimore/Washington will take if you book a nonstop flight.

  • How popular is this Seattle to Baltimore flight route?

    This flight path from Seattle/Tacoma Intl to Baltimore/Washington was viewed by 9 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Seattle to Baltimore round-trip?

    Cheapflights users have booked flights from Seattle to Baltimore round-trip from $228. Other airlines that can offer you cheap pricing are Spirit Airlines, from $236, and Delta, from $243. Frontier is priced at 46% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Baltimore one-way?

    The cheapest airlines for a one-way flight from Seattle to Baltimore are Frontier ($130), Alaska Airlines ($139), and Delta ($140).

  • What are the most reliable airlines from Seattle to Baltimore?

    No one likes to see their flight delayed. When booking a flight from Seattle to Baltimore consider choosing Alaska Airlines (80%), Air Tahiti Nui (80%) or Hawaiian Airlines (75%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Baltimore?

    Looking for the cheapest flight from Seattle to Baltimore? While on average our users pay $368, our data indicates the cheapest price to be $143. The most popular route (Seattle/Tacoma Intl - Baltimore/Washington), is priced around $165.

  • Where are the most common layover locations when flying from Seattle to Baltimore?

    Flights departing from Seattle and landing in Baltimore layover in Charlotte most frequently. Seattle to Baltimore flights stop in Denver the next most.

  • What are some popular things to do or see while on a layover in Charlotte?

    If you're on a layover in Charlotte and looking for things to do, consider visiting Carowind, Mint Museum Uptown, or NASCAR Hall of Fame. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be visited by traveling about 8.2 mi, 5.4 mi, and 5.7 mi respectively from Charlotte Douglas. Travelers can rent a car at Charlotte Douglas for an average daily rate of $55 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Denver?

    Coors Field, Paramount Theatre, and 16th Street Mall are currently the most popular points of interest in Denver at the moment. Travelers on a layover in Denver can visit Coors Field, Paramount Theatre, and 16th Street Mall, by traveling 18.4 mi, 18.6 mi, and 18.7 mi, respectively after landing at Denver Intl. Those on a layover in Denver in need of a rental car can book one at Denver Intl for about $42.

  • Where are the least popular layover locations for Seattle to Baltimore flights?

    Flights departing from Seattle and landing in Baltimore layover in Chicago least frequently.

  • Can I find deals for flights from Seattle to Baltimore that include hotel bookings?

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

  • How can I find direct flights from Seattle to Baltimore?

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

  • Can I find deals for business class flights from Seattle to Baltimore?

    Yes. Cheapflights offers flight deals from Seattle to Baltimore 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 Seattle to Baltimore?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $241). Flying from Seattle to Baltimore in March is currently the most expensive (average of $290). 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

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Alternative routes for Seattle to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Dulles Intl flights
Seattle to Reagan-National flights
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Portland to Reagan-National flights
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Walla Walla to Reagan-National flights
Walla Walla to Dulles Intl flights
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Yakima to Philadelphia flights
Portland to Salisbury flights
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Yakima to Baltimore flights

Top 8 airlines flying from Seattle to Baltimore

Discover the top 8 airlines that operate flights from Seattle to Baltimore. 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$194FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$178Average$267FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$179Average$480FlexibilityNo cancel feeOn-time85%
DeltaCheapest$198Average$339FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$206Average$374FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$262Average$402FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$276Average$495FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$321Average$452FlexibilityNo cancel feeOn-time63%

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