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Cheap flights from Kansas City to Seattle from $126

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kansas City to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:43 pm - 3:12 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
20h 29m1 stop Denver Intl
Frontier Logo
4:27 pm - 7:48 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
25h 21m1 stop Denver Intl
$269Frontier
Fri, Oct 16 - Tue, Oct 20
Frontier Logo
8:43 pm - 3:12 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
20h 29m1 stop Denver Intl
Frontier Logo
4:27 pm - 7:47 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
25h 20m1 stop Denver Intl
$272Frontier
Thu, Oct 22 - Mon, Oct 26
Multiple Airlines Logo
8:43 pm - 3:12 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
20h 29m1 stop Denver Intl
Multiple Airlines Logo
9:36 pm - 5:18 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
17h 42m2 stops San Francisco Portland
$339Multiple Airlines
Fri, Oct 16 - Mon, Oct 19
Multiple Airlines Logo
8:43 pm - 3:12 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
20h 29m1 stop Denver Intl
Multiple Airlines Logo
9:36 pm - 5:18 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
17h 42m2 stops San Francisco Portland
$339Multiple Airlines
Fri, Oct 23 - Mon, Oct 26
United Airlines Logo
5:20 pm - 9:19 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
5h 59m1 stop Denver Intl
United Airlines Logo
7:00 am - 5:07 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
8h 07m1 stop San Francisco
$408United Airlines
Tue, Oct 27 - Wed, Oct 28
United Airlines Logo
7:00 am - 2:39 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
9h 39m1 stop San Francisco
United Airlines Logo
11:59 pm - 10:06 amSEA  Seattle/Tacoma Intl-MCI Kansas City
8h 07m1 stop Houston George Bush Intcntl
$408United Airlines
Wed, Nov 4 - Wed, Nov 4
American Airlines Logo
12:21 pm - 8:19 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
9h 58m1 stop Chicago O'Hare Intl
American Airlines Logo
12:25 am - 9:13 amSEA  Seattle/Tacoma Intl-MCI Kansas City
6h 48m1 stop Dallas/Fort Worth
$413American Airlines
Sat, Dec 5 - Fri, Dec 11
American Airlines Logo
3:00 pm - 10:27 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
9h 27m1 stop Charlotte Douglas
American Airlines Logo
5:27 am - 4:30 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
9h 03m1 stop Dallas/Fort Worth
$413American Airlines
Mon, Feb 1 - Mon, Feb 22
Southwest Logo
6:25 pm - 11:30 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
7h 05m1 stop Chicago Midway
Southwest Logo
11:20 am - 10:15 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
8h 55m1 stop Chicago Midway
$413Southwest
Mon, Dec 14 - Thu, Dec 24
Southwest Logo
2:25 pm - 10:20 pmMCI  Kansas City-SEA Seattle/Tacoma Intl
9h 55m1 stop Las Vegas Harry Reid Intl
Southwest Logo
6:45 am - 3:30 pmSEA  Seattle/Tacoma Intl-MCI Kansas City
6h 45m1 stop Denver Intl
$413Southwest
Wed, Nov 11 - Sat, Nov 14

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Frontier flights from Kansas City to Seattle

Our best Frontier deals on Kansas City to Seattle flight tickets
Frontier
Oct 16
MCI8:43 pmKansas City
20h 29m
1 stop
SEA3:12 pmSeattle/Tacoma Intl
Oct 20
SEA4:27 pmSeattle/Tacoma Intl
25h 21m
1 stop
MCI7:48 pmKansas City
$269
Frontier
Oct 22
MCI8:43 pmKansas City
20h 29m
1 stop
SEA3:12 pmSeattle/Tacoma Intl
Oct 26
SEA4:27 pmSeattle/Tacoma Intl
25h 20m
1 stop
MCI7:47 pmKansas City
$272
Frontier
Oct 22
MCI8:43 pmKansas City
20h 29m
1 stop
SEA3:12 pmSeattle/Tacoma Intl
Oct 26
SEA4:27 pmSeattle/Tacoma Intl
25h 20m
1 stop
MCI7:47 pmKansas City
$273

momondo Fare Finder

 
Use the filters below to find and compare flights from Kansas City to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Fri 10/16

8:43 pm-3:12 pm

1 stop20h 29m

Seattle/Tacoma Intl

Tue 10/20

4:27 pm-7:48 pm

1 stop25h 21m

$269

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Thu 10/22

8:43 pm-3:12 pm

1 stop20h 29m

Seattle/Tacoma Intl

Mon 10/26

4:27 pm-7:47 pm

1 stop25h 20m

$272

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Fri 10/16

8:43 pm-3:12 pm

1 stop20h 29m

Seattle/Tacoma Intl

Mon 10/19

9:36 pm-5:18 pm

2 stops17h 42m

$339

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Fri 10/23

8:43 pm-3:12 pm

1 stop20h 29m

Seattle/Tacoma Intl

Mon 10/26

9:36 pm-5:18 pm

2 stops17h 42m

$339
Quickest round-trip

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Tue 10/27

5:20 pm-9:19 pm

1 stop5h 59m

Seattle/Tacoma Intl

Wed 10/28

7:00 am-5:07 pm

1 stop8h 07m

$408

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Wed 11/4

7:00 am-2:39 pm

1 stop9h 39m

Seattle/Tacoma Intl

Wed 11/4

11:59 pm-10:06 am

1 stop8h 07m

$408

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Sat 12/5

12:21 pm-8:19 pm

1 stop9h 58m

Seattle/Tacoma Intl

Fri 12/11

12:25 am-9:13 am

1 stop6h 48m

$413

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Mon 2/1

3:00 pm-10:27 pm

1 stop9h 27m

Seattle/Tacoma Intl

Mon 2/22

5:27 am-4:30 pm

1 stop9h 03m

$413

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Mon 12/14

6:25 pm-11:30 pm

1 stop7h 05m

Seattle/Tacoma Intl

Thu 12/24

11:20 am-10:15 pm

1 stop8h 55m

$413

Kansas CitySeattle

MCI Kansas City - SEA Seattle/Tacoma Intl

MCISEA

Kansas City

Wed 11/11

2:25 pm-10:20 pm

1 stop9h 55m

Seattle/Tacoma Intl

Sat 11/14

6:45 am-3:30 pm

1 stop6h 45m

$413

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Kansas City to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Kansas City and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $351 to $584.
The lowest price recently found on this route was $269.

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Kansas City to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $228. If you don’t want to visit Seattle in February, then you should wait until April to fly from Kansas City, when ticket prices are also cheap, with an average price of $238.

What is the cheapest Kansas City to Seattle/Tacoma Intl flight route?

Fly from Kansas City to Seattle/Tacoma Intl for the best Kansas City - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from Kansas City when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $356 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Kansas City for as low as $327 on momondo.

What cabin class options are available on Kansas City to Seattle flights?

There are 4 cabin classes available to choose from on Kansas City to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Kansas City to Seattle flights?

You could potentially save up to 14% on your flight if you consider stops on a Kansas City to Seattle flight.

How have Kansas City to Seattle flight prices changed over time?

As of September 2026, prices for Kansas City to Seattle flights are approximately 158% more expensive when compared to flights at the same time last year.

When to book flights from Kansas City to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Kansas City to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Kansas City to Seattle (MCI to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Kansas City to Seattle

Best Price Found

$126

Fastest flight time

3h 51m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Kansas City in the past 72 hours is $126. The best round-trip flight deal from Kansas City to Seattle found on momondo in the last 72 hours is $269.
The fastest flight from Kansas City to Seattle takes 3h 51m
Direct flights go from Kansas City to Seattle every day.
There is 1 airport in Seattle. From Kansas City there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Kansas City to Seattle

  • How far is Kansas City to Seattle/Tacoma Intl by plane?

    Kansas City and Seattle/Tacoma Intl are 1503.6 mi apart from one another. In terms of flight time, this usually takes a little over 3h 51m.

  • When did momondo last update prices for flights from Kansas City Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Kansas City Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Kansas City Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Kansas City Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kansas City Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Kansas City to Seattle?

  • What is the most popular airline from Kansas City to Seattle?

Best airlines flying from Kansas City to Seattle

Compare and see reviews for airlines that fly from Kansas City to Seattle with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $152Free CancellationRating
8.0
4,201 reviews
Search Southwest flights
DeltaPriceFrom $158Free CancellationRating
7.8
8,606 reviews
Search Delta flights
FrontierPriceFrom $193Free CancellationRating
5.6
2,573 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $198Free CancellationRating
7.9
12,980 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
10,246 reviews
Search United Airlines flights
American AirlinesPriceFrom $367Free CancellationRating
7.0
12,098 reviews
Search American Airlines flights

  • Southwest Flights From Kansas City to Seattle

    Southwest operates around 1 flight from Kansas City to Seattle every week. The average price of these flights found in the last 72 hours has been $436, but momondo users have found Southwest deals from Kansas City to Seattle from as low as $152 round-trip. Southwest has been scored 8.0/10 in 4,202 reviews.

  • Alaska Airlines Flights From Kansas City to Seattle

    Another popular option for Kansas City to Seattle flights is Alaska Airlines (7.9/10, 12,985 ratings). Alaska Airlines flies from Kansas City to Seattle around 4 times per week, with deals starting from $198 round-trip and rising to an average price of around $424.

Traveling to a place near Seattle?

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

Why use momondo?

Why should I use momondo to find a flight deal from Kansas City to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Kansas City to Seattle for you.

Can I find flights from Kansas City to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Kansas City on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Kansas City to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Kansas City.

I’m not ready to book a flight from Kansas City to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Kansas City to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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