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$92+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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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 Wednesday 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 July 1, 2025.

Round-trip from

$257
(Hawaiian Airlines)

One-way from

$109
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$413
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. 20% potential increase in price ($85 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 July 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 July 1, 2025.

This FlightHub deal was found by Cheapflights users on 6/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/288:01 pmMCI - SEA
1 stop6h 33mMultiple Airlines
Mon 8/45:30 pmSEA - MCI
1 stop18h 07mMultiple Airlines
Deal found 6/29$254
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/63:37 pmMCI - SEA
Nonstop3h 57mHawaiian Airlines
Wed 9/109:12 amSEA - MCI
Nonstop3h 30mHawaiian Airlines
Deal found 6/30$257
This FlightHub deal was found by Cheapflights users on 6/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/292:32 pmMCI - SEA
1 stop27h 53mSpirit Airlines
Tue 8/55:30 pmSEA - MCI
1 stop18h 07mSpirit Airlines
Deal found 6/29$262
This Frontier deal was found by Cheapflights users on 6/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/82:55 pmMCI - SEA
1 stop11h 35mFrontier
Sun 9/146:12 amSEA - MCI
1 stop5h 36mFrontier
Deal found 6/29$263
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/165:25 pmMCI - SEA
2 stops9h 34mUnited Airlines
Sat 8/235:02 amSEA - MCI
1 stop5h 38mUnited Airlines
Deal found 6/29$266
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/203:05 pmMCI - SEA
2 stops9h 45mSouthwest
Sun 8/317:35 amSEA - MCI
1 stop6h 25mSouthwest
Deal found 6/30$272
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:55 amMCI - SEA
Nonstop3h 57mDelta
Fri 9/125:30 pmSEA - MCI
Nonstop3h 30mDelta
Deal found 6/28$277
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:55 pmMCI - SEA
1 stop5h 40mAlaska Airlines
Thu 9/181:35 pmSEA - MCI
Nonstop3h 29mAlaska Airlines
Deal found 6/29$287

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 July 1, 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 8/20

3:37 pm-5:30 pm

Nonstop3h 53m

Seattle/Tacoma Intl

Sat 8/30

3:40 pm-9:12 pm

Nonstop3h 32m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 7/29

2:32 pm-4:25 pm

1 stop27h 53m

Seattle/Tacoma Intl

Tue 8/5

5:30 pm-1:37 pm

1 stop18h 07m

$262

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 8/22

11:22 am-12:34 am

2 stops15h 12m

Seattle/Tacoma Intl

Sun 8/31

6:17 am-1:33 pm

1 stop5h 16m

$265

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 8/20

7:10 pm-11:10 pm

1 stop6h 00m

Seattle/Tacoma Intl

Sun 8/31

7:35 am-4:00 pm

1 stop6h 25m

$267

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 8/25

2:18 pm-12:34 am

1 stop12h 16m

Seattle/Tacoma Intl

Thu 8/28

1:35 pm-7:04 pm

Nonstop3h 29m

$271

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 10/7

6:40 am-8:50 am

Nonstop4h 10m

Seattle/Tacoma Intl

Sun 10/19

5:30 pm-11:01 pm

Nonstop3h 31m

$277

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 8/20

2:51 pm-8:34 pm

1 stop7h 43m

Seattle/Tacoma Intl

Tue 8/26

12:46 am-1:22 pm

1 stop10h 36m

$296

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 9/6

3:01 pm-9:18 pm

1 stop8h 17m

Seattle/Tacoma Intl

Wed 9/10

6:25 am-8:42 pm

2 stops12h 17m

$302

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 10/10

3:28 pm-5:25 pm

Nonstop3h 57m

Seattle/Tacoma Intl

Thu 10/16

8:00 am-4:22 pm

1 stop6h 22m

$307

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 10/10

7:51 pm-12:31 am

1 stop6h 40m

$92

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 17 results
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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

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 June 27, 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, January is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $238). Flying from Kansas City to Seattle in July is currently the most expensive (average of $390). 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 July 1, 2025.

It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight at noon.

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 June 29, 2025.

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

Weekly flight availability from Kansas City to Seattle

Explore weekly flight availability from Kansas City to Seattle. 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 July 1, 2025.

The most flights from MCI to SEA are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

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 July 1, 2025.
Read through reviews of airlines operating flights from Kansas City to Seattle, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,273 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.8
Good
2,539 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 52m on average. When it comes time to book airfare, you have a few options: there are 11 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 88 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 Kansas City to Seattle round-trip?

    Currently priced at $257, Hawaiian Airlines will fly you from Kansas City to Seattle and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Frontier - these airlines can fly you to your destination from $262 and $265, respectively. Users have found that Hawaiian Airlines is 22% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $109. However, be on the lookout for offers from Alaska Airlines and Southwest, as they are both options that can get you from Kansas City to Seattle for a low price.

  • 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: Scandinavian Airlines (100%), Delta (97%), Korean Air (97%).

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

    While on average a flight from Kansas City to Seattle is generally $1,555, our data shows the cheapest flight currently is $129. When looking at the most popular route, (Kansas City - Seattle/Tacoma Intl), you can expect to pay $219 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, January is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $238). Flying from Kansas City to Seattle in July is currently the most expensive (average of $390). 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 Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Kirkland
Aberdeen
Renton
Shelton
Silverdale

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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$193FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$136Average$236FlexibilityNo cancel feeOn-time65%
DeltaCheapest$142Average$324FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$387FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$214Average$423FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$336FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$216Average$371FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$266Average$404FlexibilityNo cancel feeOn-time63%

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