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$79+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
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 Saturday

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 agosto 14, 2025.

Round-trip from

$225
(American Airlines)

One-way from

$79
(Frontier)

Popular in

July

Cheapest in

January

Average price

$357
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 ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/14. 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.
mié. 12/36:07 pmMCI - SEA
1 stop6h 58mAmerican Airlines
mar. 12/92:07 pmSEA - MCI
1 stop6h 18mAmerican Airlines
Deal found 8/14$225
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
jue. 11/68:28 pmMCI - SEA
1 stop17h 45mMultiple Airlines
dom. 11/911:43 amSEA - MCI
1 stop10h 57mMultiple Airlines
Deal found 8/14$226
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
jue. 9/183:01 pmMCI - SEA
1 stop11h 29mMultiple Airlines
mar. 9/233:40 pmSEA - MCI
Nonstop3h 32mMultiple Airlines
Deal found 8/14$229
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/188:01 pmMCI - SEA
1 stop6h 33mFrontier
lun. 8/256:17 amSEA - MCI
1 stop5h 16mFrontier
Deal found 8/13$230
This FlightHub deal was found by Cheapflights users on 8/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/63:01 pmMCI - SEA
1 stop23h 06mFrontier
mar. 10/141:02 pmSEA - MCI
1 stop26h 53mFrontier
Deal found 8/13$231
This Orbitz deal was found by Cheapflights users on 8/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/47:59 pmMCI - SEA
Nonstop3h 52mMultiple Airlines
dom. 9/76:12 amSEA - MCI
1 stop5h 36mMultiple Airlines
Deal found 8/14$232
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
dom. 9/143:01 pmMCI - SEA
1 stop11h 29mMultiple Airlines
lun. 9/221:47 pmSEA - MCI
2 stops23h 23mMultiple Airlines
Deal found 8/14$233
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
lun. 10/208:38 pmMCI - SEA
1 stop17h 29mMultiple Airlines
vie. 10/246:27 pmSEA - MCI
Nonstop3h 32mMultiple Airlines
Deal found 8/14$234
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
dom. 9/143:01 pmMCI - SEA
1 stop11h 29mMultiple Airlines
vie. 9/196:30 pmSEA - MCI
Nonstop3h 29mMultiple Airlines
Deal found 8/14$235
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
jue. 10/98:38 pmMCI - SEA
1 stop12h 55mFrontier
dom. 10/128:43 pmSEA - MCI
1 stop21h 10mFrontier
Deal found 8/14$236
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
jue. 9/43:01 pmMCI - SEA
1 stop11h 29mFrontier
dom. 9/74:36 pmSEA - MCI
2 stops19h 12mFrontier
Deal found 8/14$238

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 agosto 14, 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

mié. 9/10

1:01 pm-7:59 pm

1 stop8h 58m

Seattle/Tacoma Intl

mié. 9/17

6:11 am-5:08 pm

1 stop8h 57m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

vie. 9/19

3:01 pm-12:30 am

1 stop11h 29m

Seattle/Tacoma Intl

mar. 9/23

3:40 pm-9:12 pm

Nonstop3h 32m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

mar. 9/2

5:50 am-10:25 am

1 stop6h 35m

Seattle/Tacoma Intl

mar. 9/16

11:38 pm-12:09 pm

1 stop10h 31m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

mié. 12/3

7:30 am-12:34 pm

1 stop7h 04m

Seattle/Tacoma Intl

lun. 12/8

1:23 am-9:45 am

1 stop6h 22m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

jue. 11/6

8:28 pm-12:13 pm

1 stop17h 45m

Seattle/Tacoma Intl

dom. 11/9

11:43 am-12:40 am

1 stop10h 57m

$226

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

jue. 9/18

3:01 pm-12:30 am

1 stop11h 29m

Seattle/Tacoma Intl

mar. 9/23

3:40 pm-9:12 pm

Nonstop3h 32m

$229

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

jue. 11/13

8:28 pm-8:18 am

2 stops13h 50m

Seattle/Tacoma Intl

dom. 11/16

2:22 pm-10:17 am

2 stops17h 55m

$231

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

jue. 11/6

8:28 pm-8:18 am

2 stops13h 50m

Seattle/Tacoma Intl

dom. 11/9

2:22 pm-10:17 am

2 stops17h 55m

$231

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

jue. 9/4

3:37 pm-5:34 pm

Nonstop3h 57m

Seattle/Tacoma Intl

dom. 9/7

6:12 am-1:48 pm

1 stop5h 36m

$232

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

dom. 9/14

3:01 pm-12:30 am

1 stop11h 29m

Seattle/Tacoma Intl

lun. 9/22

1:47 pm-3:10 pm

2 stops23h 23m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 22 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 August 8, 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 June is currently the most expensive (average of $389). 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 agosto 14, 2025.

It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 9% 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 August 10, 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.

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 agosto 14, 2025.

The most flights from MCI to SEA are scheduled on a Thursday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 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 agosto 14, 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
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,656 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Frontier
5.8
Fair
3,217 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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 13 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 92 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 $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 $118 and $137, 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: Qatar Airways (93%), Japan Airlines (93%), Scandinavian Airlines (88%).

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

    While on average a flight from Kansas City to Seattle is generally $1,573, our data shows the cheapest flight currently is $39. When looking at the most popular route, (Kansas City - Seattle/Tacoma Intl), you can expect to pay $217 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 June is currently the most expensive (average of $389). 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
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
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Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$111Average$255FlexibilityNo cancel feeOn-time65%
FrontierCheapest$118Average$220FlexibilityNo cancel feeOn-time62%
DeltaCheapest$137Average$323FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$378FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$214Average$417FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$336FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$216Average$375FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$237Average$388FlexibilityNo cancel feeOn-time63%

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