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$62+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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

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 Kansas City to Seattle/Tacoma Intl are usually found in January or April, 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 October 30, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$214
(Kiwi.com)

One-way from

$62
(Trip.com)

Popular in

July

Cheapest in

January

Average price

$327
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. 15% potential increase in price ($60 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 October 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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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
1 stop17h 44mMultiple Airlines
Mon 12/155:21 pmSEA - MCI
2 stops25h 23mMultiple Airlines
Deal found 10/29$214
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/1411:12 amMCI - SEA
2 stops33h 20mFrontier
Tue 11/181:37 pmSEA - MCI
1 stop25h 42mFrontier
Deal found 10/29$217
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Wed 12/317:00 amMCI - SEA
1 stop8h 51mMultiple Airlines
Tue 1/62:36 pmSEA - MCI
1 stop22h 16mMultiple Airlines
Deal found 10/30$218
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/126:49 pmMCI - SEA
2 stops25h 43mFrontier
Sat 11/158:22 pmSEA - MCI
1 stop13h 24mFrontier
Deal found 10/29$223
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:10 pmMCI - SEA
1 stop6h 11mUnited Airlines
Tue 12/167:10 amSEA - MCI
1 stop7h 28mUnited Airlines
Deal found 10/28$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.
Thu 11/2712:58 pmMCI - SEA
2 stops24h 58mMultiple Airlines
Thu 12/41:09 pmSEA - MCI
1 stop22h 44mMultiple Airlines
Deal found 10/28$230
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/151:23 pmMCI - SEA
2 stops20h 55mMultiple Airlines
Tue 11/181:37 pmSEA - MCI
1 stop25h 42mMultiple Airlines
Deal found 10/29$236
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 amMCI - SEA
1 stop7h 45mUnited Airlines
Sat 12/1311:59 pmSEA - MCI
1 stop7h 30mUnited Airlines
Deal found 10/28$237
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.
Sun 12/218:45 pmMCI - SEA
1 stop17h 45mFrontier
Thu 12/251:25 pmSEA - MCI
1 stop28h 25mFrontier
Deal found 10/28$245
This Mytrip deal was found by Cheapflights users on 10/30. 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.
Sat 11/158:28 pmMCI - SEA
1 stop17h 45mFrontier
Mon 11/172:22 pmSEA - MCI
1 stop24h 57mFrontier
Deal found 10/30$247

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 October 30, 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

Wed 2/18

2:55 pm-4:49 pm

Nonstop3h 54m

Seattle/Tacoma Intl

Wed 2/25

8:10 am-1:42 pm

Nonstop3h 32m

$237

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/5

6:00 am-11:45 am

1 stop7h 45m

Seattle/Tacoma Intl

Sat 12/13

11:59 pm-9:29 am

1 stop7h 30m

$237

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 11/15

8:28 pm-12:13 pm

1 stop17h 45m

Seattle/Tacoma Intl

Mon 11/17

2:22 pm-5:19 pm

1 stop24h 57m

$247

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 3/10

5:55 pm-10:24 pm

1 stop6h 29m

Seattle/Tacoma Intl

Wed 3/11

8:25 am-4:20 pm

1 stop5h 55m

$256

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 3/10

5:55 pm-10:24 pm

1 stop6h 29m

Seattle/Tacoma Intl

Wed 3/11

8:25 am-4:20 pm

1 stop5h 55m

$256

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 12/13

7:50 am-10:02 am

Nonstop4h 12m

Seattle/Tacoma Intl

Tue 12/16

5:50 pm-11:22 pm

Nonstop3h 32m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/5

6:55 am-9:07 am

Nonstop4h 12m

Seattle/Tacoma Intl

Sun 12/14

6:32 pm-11:58 pm

Nonstop3h 26m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/5

2:50 pm-5:00 pm

Nonstop4h 10m

Seattle/Tacoma Intl

Fri 12/12

6:32 pm-11:58 pm

Nonstop3h 26m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/5

2:50 pm-5:00 pm

Nonstop4h 10m

Seattle/Tacoma Intl

Thu 12/11

6:32 pm-11:58 pm

Nonstop3h 26m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/5

7:50 am-10:03 am

Nonstop4h 13m

Seattle/Tacoma Intl

Sat 12/13

5:50 pm-11:22 pm

Nonstop3h 32m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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 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
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 October 24, 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 October 30, 2025.

It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 15% 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 October 26, 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. Sunday at noon 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 October 30, 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
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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
11,220 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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
7,998 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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
2,798 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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
11,034 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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
3,123 reviews
Alaska Airlines
8.0
Very good
11,220 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

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 54m on average. When it comes time to book airfare, you have a few options: there are 4 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 81 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?

    Alaska Airlines, United Airlines, and Frontier can get you from Kansas City to Seattle in just under 3h 54m. Your travel time can differ by up to 13h 51m. 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: Delta (93%), Korean Air (93%), Qatar Airways (93%).

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

    While on average a flight from Kansas City to Seattle is generally $762, 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 $214 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
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$111Average$255FlexibilityNo cancel feeOn-time65%
FrontierCheapest$119Average$238FlexibilityNo cancel feeOn-time62%
DeltaCheapest$140Average$340FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$373FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$214Average$407FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$332FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$237Average$388FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$240Average$398FlexibilityNo cancel feeOn-time75%

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