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$61+ Cheap flights from Kansas City to Seattle (MCI - SEA)

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find cheap flights from Kansas City to Seattle 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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Kansas City to Seattle/Tacoma Intl are usually found in November or January, booked 52 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Kansas City to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Seattle (SEA). 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 November 13, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$199
(Delta)

One-way from

$61
(Trip.com)

Popular in

July

Cheapest in

November

Average price

$257
Provider with most accurate pricing for Kansas City-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Kansas City-Seattle/Tacoma Intl flights.
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From Kansas City to Seattle/Tacoma Intl
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One-way flight from Kansas City to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 16% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Kansas City to Seattle

Cheapest flights from Kansas City to Seattle
Explore the most affordable flight options available from Kansas City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:00 amMCI - SEA
1 stop10h 07mUnited Airlines
Mon 12/88:40 amSEA - MCI
1 stop5h 25mUnited Airlines
Deal found 11/12$217
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:22 pmMCI - SEA
1 stop7h 58mDelta
Sun 12/145:25 amSEA - MCI
1 stop6h 02mDelta
Deal found 11/13$219
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:00 amMCI - SEA
1 stop6h 09mUnited Airlines
Wed 12/109:05 amSEA - MCI
2 stops9h 42mUnited Airlines
Deal found 11/12$222
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/48:09 pmMCI - SEA
1 stop17h 44mMultiple Airlines
Mon 12/85:21 pmSEA - MCI
2 stops25h 23mMultiple Airlines
Deal found 11/12$223
This Kiwi.com deal was found by Cheapflights users on 11/13. 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.
Thu 12/118:09 pmMCI - SEA
2 stops20h 36mFrontier
Thu 12/181:25 pmSEA - MCI
1 stop28h 25mFrontier
Deal found 11/13$225
This Kiwi.com deal was found by Cheapflights users on 11/13. 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.
Fri 12/122:48 pmMCI - SEA
1 stop23h 05mFrontier
Fri 12/192:54 pmSEA - MCI
1 stop26h 57mFrontier
Deal found 11/13$226
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/111:34 pmMCI - SEA
1 stop7h 21mAlaska Airlines
Tue 1/208:15 amSEA - MCI
Nonstop3h 35mAlaska Airlines
Deal found 11/12$228
This Kiwi.com deal was found by Cheapflights users on 11/13. 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.
Mon 12/228:45 pmMCI - SEA
2 stops15h 26mMultiple Airlines
Mon 1/56:33 pmSEA - MCI
1 stop18h 19mMultiple Airlines
Deal found 11/13$229
This Cheapflightsfares deal was found by Cheapflights users on 11/13. 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.
Mon 12/226:00 amMCI - SEA
Nonstop4h 15mAlaska Airlines
Mon 1/56:47 pmSEA - MCI
Nonstop3h 26mAlaska Airlines
Deal found 11/13$236
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:49 pmMCI - SEA
1 stop8h 27mAmerican Airlines
Sun 12/712:31 amSEA - MCI
1 stop7h 24mAmerican Airlines
Deal found 11/11$238
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:50 amMCI - SEA
Nonstop4h 12mDelta
Wed 12/105:50 pmSEA - MCI
Nonstop3h 32mDelta
Deal found 11/12$239
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/187:00 amMCI - SEA
1 stop29h 11mMultiple Airlines
Mon 12/226:33 pmSEA - MCI
2 stops23h 17mMultiple Airlines
Deal found 11/12$240

Cheapflights Fare Finder

 
Customize your flight search to find flights from Kansas City to Seattle 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 November 13, 2025.
Use the filters below to find and compare flights from Kansas City to Seattle that are best for you.

Fly from

Kansas City

Fly to

Seattle

Route

Depart

Return

Price

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

6:22 pm-12:20 am

1 stop7h 58m

Seattle/Tacoma Intl

Sun 12/14

5:25 am-1:27 pm

1 stop6h 02m

$219

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 1/28

10:00 am-6:26 pm

2 stops10h 26m

Seattle/Tacoma Intl

Mon 2/2

8:40 am-4:08 pm

1 stop5h 28m

$222

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 1/9

5:10 pm-9:15 pm

1 stop6h 05m

Seattle/Tacoma Intl

Sat 1/10

9:00 am-9:59 pm

2 stops10h 59m

$222

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 12/22

7:00 am-10:11 am

1 stop29h 11m

Seattle/Tacoma Intl

Thu 12/25

1:25 pm-10:08 am

2 stops18h 43m

$236

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 1/8

2:45 pm-4:51 pm

Nonstop4h 06m

Seattle/Tacoma Intl

Mon 1/12

8:15 am-1:50 pm

Nonstop3h 35m

$238

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sun 12/14

7:50 am-10:02 am

Nonstop4h 12m

Seattle/Tacoma Intl

Thu 12/18

5:50 pm-11:22 pm

Nonstop3h 32m

$239

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

5:10 pm-9:46 pm

1 stop6h 36m

Seattle/Tacoma Intl

Tue 12/16

9:05 am-8:47 pm

2 stops9h 42m

$259

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 12/22

7:33 am-9:45 am

Nonstop4h 12m

Seattle/Tacoma Intl

Thu 12/25

5:50 pm-11:22 pm

Nonstop3h 32m

$268

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/4

1:40 pm-9:00 pm

2 stops9h 20m

Seattle/Tacoma Intl

Mon 12/8

8:40 am-4:05 pm

1 stop5h 25m

$272

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sun 1/11

2:38 pm-4:44 pm

Nonstop4h 06m

Seattle/Tacoma Intl

Fri 1/16

8:15 am-1:50 pm

Nonstop3h 35m

$278

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 20 results
1
2

Compare providers for flights from Kansas City to Seattle

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 Kansas City to Seattle in November.
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
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice 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 Kansas City-Seattle flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Kansas City-Seattle flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Kansas City-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Kansas City-Seattle flights, Cheapflights users trust CheapOair the most. CheapOair 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 Kansas City-Seattle 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 Kansas City to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Kansas City to Seattle. Price data was last updated on November 7, 2025.

The price you pay for your flight from Kansas City to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Kansas City to Seattle?

Currently, April is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $118). Flying from Kansas City to Seattle in July is currently the most expensive (average of $237). 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 MCI to SEA?

Find hourly flight availability from Kansas City to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Kansas City to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Kansas City to Seattle. Price data was last updated on November 2, 2025.

Travelers seeking maximum savings on their Kansas City to Seattle flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Kansas City to Seattle 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 Kansas City to Seattle trip
Airports
MCI

MCI's central security checkpoint rarely has long waits, often under 5 minutes, making it convenient for early morning flights.

Read more about MCIby Matt Meltzer
SEA

Take the Link light rail from SEA to downtown Seattle for an affordable and convenient 40-minute ride.

Read more about SEAby Brandon Schultz
Our travel experts
Matt Meltzer

Matt Meltzer

Expert on MCI

Matt Meltzer

Matt Meltzer

Matt Meltzer has been a travel writer for over a decade, covering U.S. domestic locations and hotels for Thrillist, Fifty Grande, Matador Network, Conde Nast Traveler, and other top publications. He's won multiple travel journalism awards from the Society of American Travel Writers and North American Travel Journalists Association, and currently resides in South Florida.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated November 13, 2025.
Read through reviews of airlines operating flights from Kansas City to Seattle, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,281 reviews
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,809 reviews
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Frontier
5.8
Fair
3,114 reviews
Alaska Airlines
8.0
Very good
11,281 reviews

Crew

8.5

Comfort

7.8

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

Find useful and relevant information for your journey from Kansas City to Seattle. 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 Kansas City to Seattle?

    To fly from Kansas City to Seattle, you need to book a flight from Kansas City (MCI) to Seattle/Tacoma Intl (SEA). Nonstop flights to Seattle/Tacoma Intl from Kansas City take 3h 59m on average. When it comes time to book airfare, you have a few options: there are 8 outbound flights from Kansas City to Seattle/Tacoma Intl offered by 8 different airlines.

  • How popular is this Kansas City to Seattle flight route?

    The Kansas City to Seattle/Tacoma Intl flight path was viewed by 85 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Kansas City to Seattle?

    Delta, United Airlines, and Alaska Airlines can get you from Kansas City to Seattle in just under 4h 06m. Your travel time can differ by up to 6h 20m. Kansas City and Seattle are separated by a distance of 1485 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $111, Spirit Airlines will fly you from Kansas City to Seattle and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $119 and $140, respectively. Users have found that Spirit Airlines is 66% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Kansas City to Seattle?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Kansas City to Seattle on time: Southwest (100%), Delta (90%), Korean Air (90%).

  • What are the cheapest flights from Kansas City to Seattle?

    While on average a flight from Kansas City to Seattle is generally $678, our data shows the cheapest flight currently is $138. When looking at the most popular route, (Kansas City - Seattle/Tacoma Intl), you can expect to pay $199 for that flight.

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

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

  • How can I find direct flights from Kansas City to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Kansas City to Seattle 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 Kansas City to Seattle?

    Currently, April is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $118). Flying from Kansas City to Seattle in July is currently the most expensive (average of $237). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Tukwila
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
Cle Elum
Marysville
Puyallup
Federal Way
Fife
Issaquah
Aberdeen

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Kansas City to Seattle

Discover the top 8 airlines that operate flights from Kansas City to Seattle. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$111Average$255FlexibilityNo cancel feeOn-time65%
FrontierCheapest$119Average$229FlexibilityNo cancel feeOn-time62%
DeltaCheapest$140Average$340FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$373FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$214Average$408FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$331FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$237Average$388FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$238Average$394FlexibilityNo cancel feeOn-time75%

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