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$96+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
May 4 — May 111
Sun 5/4
Sun 5/11
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

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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 April 29, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$208
(Frontier)

One-way from

$96
(Cheapflightsfares)

Popular in

July

Cheapest in

January

Average price

$267
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. 18% potential increase in price ($75 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 April 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 April 29, 2025.

This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:51 pmMCI - SEA
1 stop6h 46mFrontier
Wed 6/46:25 amSEA - MCI
1 stop10h 46mFrontier
Deal found 4/28$208
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:58 pmMCI - SEA
1 stop6h 12mSpirit Airlines
Mon 6/26:00 amSEA - MCI
1 stop11h 03mSpirit Airlines
Deal found 4/27$210
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:58 pmMCI - SEA
1 stop6h 12mMultiple Airlines
Tue 6/39:04 amSEA - MCI
Nonstop3h 32mMultiple Airlines
Deal found 4/27$230
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.
Sat 6/145:20 pmMCI - SEA
1 stop5h 54mUnited Airlines
Mon 6/1611:50 pmSEA - MCI
1 stop8h 44mUnited Airlines
Deal found 4/28$247
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:30 amMCI - SEA
Nonstop3h 55mDelta
Tue 5/205:30 pmSEA - MCI
Nonstop3h 38mDelta
Deal found 4/27$287
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.
Tue 7/15:00 amMCI - SEA
1 stop7h 04mAmerican Airlines
Mon 7/712:55 amSEA - MCI
1 stop6h 58mAmerican Airlines
Deal found 4/27$297
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:20 pmMCI - SEA
1 stop7h 55mSouthwest
Sun 8/310:40 pmSEA - MCI
1 stop9h 30mSouthwest
Deal found 4/28$328
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:01 pmMCI - SEA
Nonstop3h 59mHawaiian Airlines
Wed 6/412:35 pmSEA - MCI
Nonstop3h 32mHawaiian Airlines
Deal found 4/28$337
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/123:37 pmMCI - SEA
Nonstop3h 53mAlaska Airlines
Tue 9/167:55 amSEA - MCI
1 stop6h 06mAlaska Airlines
Deal found 4/27$349

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 April 29, 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

Fri 5/30

7:58 pm-12:10 am

1 stop6h 12m

Seattle/Tacoma Intl

Mon 6/2

6:00 am-7:03 pm

1 stop11h 03m

$210

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 5/30

7:51 pm-12:37 am

1 stop6h 46m

Seattle/Tacoma Intl

Sat 6/7

6:25 am-11:35 am

1 stop27h 10m

$211

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 5/29

7:58 pm-12:10 am

1 stop6h 12m

Seattle/Tacoma Intl

Tue 6/3

9:04 am-2:36 pm

Nonstop3h 32m

$230

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 6/14

5:20 pm-9:14 pm

1 stop5h 54m

Seattle/Tacoma Intl

Mon 6/16

11:50 pm-10:34 am

1 stop8h 44m

$247

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 5/17

6:30 am-8:25 am

Nonstop3h 55m

Seattle/Tacoma Intl

Tue 5/20

5:30 pm-11:08 pm

Nonstop3h 38m

$287

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 7/1

5:00 am-10:04 am

1 stop7h 04m

Seattle/Tacoma Intl

Mon 7/7

12:55 am-9:53 am

1 stop6h 58m

$297

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 5/20

7:01 pm-9:00 pm

Nonstop3h 59m

Seattle/Tacoma Intl

Sun 5/25

9:00 am-4:40 pm

1 stop5h 40m

$327

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 6/14

8:15 pm-1:05 am

1 stop6h 50m

Seattle/Tacoma Intl

Sun 6/15

10:40 pm-9:05 am

1 stop8h 25m

$354

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 5/15

7:00 am-8:53 am

Nonstop3h 53m

Seattle/Tacoma Intl

Tue 5/20

6:05 pm-11:38 pm

Nonstop3h 33m

$372

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 5/28

7:39 pm-11:27 pm

1 stop5h 48m

$101

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 19 results
1
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Kansas City-Seattle flight deals on Cheapflights vs. Mytrip >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 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 Kansas City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

The new MCI terminal offers streamlined security with a central checkpoint, rarely taking more than 5 minutes without TSA PreCheck.

Read more about MCIby Matt Meltzer
SEA

Use the Link light rail from SEA to downtown Seattle for an inexpensive, 40-minute journey with ample luggage space.

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 April 25, 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 $405). 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 April 29, 2025.

It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 11% 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 March 30, 2025.

Travelers seeking maximum savings on their Kansas City to Seattle flight should consider departing on Wednesday 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 April 29, 2025.

The most flights from MCI to SEA are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 29, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Kansas City to Seattle to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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
4,292 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Crew

8.5

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 9 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 84 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 $208, Frontier will fly you from Kansas City to Seattle and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and United Airlines - these airlines can fly you to your destination from $210 and $247, respectively. Users have found that Frontier is 37% 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 Spirit Airlines, with whom users have recently found tickets for as low as $96. However, be on the lookout for offers from Frontier and Hawaiian Airlines, 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: KLM (100%), Qatar Airways (91%), Delta (89%).

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

    While on average a flight from Kansas City to Seattle is generally $1,014, our data shows the cheapest flight currently is $149. When looking at the most popular route, (Kansas City - Seattle/Tacoma Intl), you can expect to pay $210 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 $405). 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
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Aberdeen
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$237FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$138Average$361FlexibilityNo cancel feeOn-time85%
DeltaCheapest$143Average$322FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$216Average$377FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$216Average$369FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$267Average$404FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$275Average$485FlexibilityNo cancel feeOn-time71%

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