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Cheap flights from Kansas City to Seattle from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kansas City to Seattle departing on 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Kansas City to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
1:45 pm - 2:19 pm
MCI
-
SEA
26h 34m
1 stop
Frontier Logo
7:41 pm - 12:55 pm
SEA
-
MCI
15h 14m
1 stop
$239Frontier
Sun, Jul 26 - Wed, Jul 29
Frontier Logo
1:45 pm - 9:49 am
MCI
-
SEA
22h 04m
1 stop
Frontier Logo
8:12 pm - 12:55 pm
SEA
-
MCI
14h 43m
1 stop
$260Frontier
Sat, Aug 1 - Sun, Aug 9
Frontier Logo
1:45 pm - 9:49 am
MCI
-
SEA
22h 04m
1 stop
Frontier Logo
8:12 pm - 12:55 pm
SEA
-
MCI
14h 43m
1 stop
$261Frontier
Sat, Aug 1 - Sun, Aug 9
Frontier Logo
1:50 pm - 10:39 am
MCI
-
SEA
22h 49m
1 stop
Frontier Logo
7:41 pm - 12:55 pm
SEA
-
MCI
15h 14m
1 stop
$262Frontier
Fri, Jul 17 - Mon, Jul 20
Frontier Logo
1:45 pm - 2:19 pm
MCI
-
SEA
26h 34m
1 stop
Frontier Logo
7:41 pm - 1:00 pm
SEA
-
MCI
15h 19m
1 stop
$276Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
1:45 pm - 9:49 am
MCI
-
SEA
22h 04m
1 stop
Frontier Logo
3:34 pm - 12:55 pm
SEA
-
MCI
19h 21m
1 stop
$280Frontier
Fri, Jul 10 - Mon, Jul 13
Frontier Logo
1:45 pm - 9:48 am
MCI
-
SEA
22h 03m
1 stop
Frontier Logo
7:41 pm - 1:00 pm
SEA
-
MCI
15h 19m
1 stop
$282Frontier
Mon, Jun 15 - Mon, Jun 22
Frontier Logo
1:45 pm - 9:48 am
MCI
-
SEA
22h 03m
1 stop
Frontier Logo
3:33 pm - 1:00 pm
SEA
-
MCI
19h 27m
1 stop
$302Frontier
Wed, Jun 24 - Mon, Jun 29
Frontier Logo
1:45 pm - 9:49 am
MCI
-
SEA
22h 04m
1 stop
Frontier Logo
7:41 pm - 12:55 pm
SEA
-
MCI
15h 14m
1 stop
$306Frontier
Tue, Jul 28 - Wed, Jul 29
Frontier Logo
1:45 pm - 2:18 pm
MCI
-
SEA
26h 33m
1 stop
Frontier Logo
8:12 pm - 12:55 pm
SEA
-
MCI
14h 43m
1 stop
$307Frontier
Wed, Jul 1 - Wed, Jul 8

Frontier flights from Kansas City to Seattle

Our best Frontier deals on Kansas City to Seattle flight tickets
Frontier
Jul 26
MCI1:45 pmKansas City
26h 34m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
Jul 29
SEA7:41 pmSeattle/Tacoma Intl
15h 14m
1 stop
MCI12:55 pmKansas City
$239
Frontier
Aug 1
MCI1:45 pmKansas City
22h 04m
1 stop
SEA9:49 amSeattle/Tacoma Intl
Aug 9
SEA8:12 pmSeattle/Tacoma Intl
14h 43m
1 stop
MCI12:55 pmKansas City
$260
Frontier
Aug 1
MCI1:45 pmKansas City
22h 04m
1 stop
SEA9:49 amSeattle/Tacoma Intl
Aug 9
SEA8:12 pmSeattle/Tacoma Intl
14h 43m
1 stop
MCI12:55 pmKansas City
$261

Southwest flights from Kansas City to Seattle

Our best Southwest deals on Kansas City to Seattle flight tickets
Southwest
May 28
MCI5:55 pmKansas City
8h 45m
2 stops
SEA12:40 amSeattle/Tacoma Intl
Jun 3
SEA6:00 amSeattle/Tacoma Intl
8h 00m
1 stop
MCI4:00 pmKansas City
$462
Southwest
May 27
MCI3:40 pmKansas City
9h 15m
2 stops
SEA10:55 pmSeattle/Tacoma Intl
Jun 3
SEA11:40 amSeattle/Tacoma Intl
8h 45m
2 stops
MCI10:25 pmKansas City
$477

momondo 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, momondo users made 832,500 searches. Data last updated May 15, 2026.
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 - SEA

MCISEA

Kansas City

Sun 7/26

1:45 pm-2:19 pm

1 stop26h 34m

Seattle/Tacoma Intl

Wed 7/29

7:41 pm-12:55 pm

1 stop15h 14m

$239
Quickest round-trip

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 8/1

1:45 pm-9:49 am

1 stop22h 04m

Seattle/Tacoma Intl

Sun 8/9

8:12 pm-12:55 pm

1 stop14h 43m

$260

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 8/1

1:45 pm-9:49 am

1 stop22h 04m

Seattle/Tacoma Intl

Sun 8/9

8:12 pm-12:55 pm

1 stop14h 43m

$261

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 7/17

1:50 pm-10:39 am

1 stop22h 49m

Seattle/Tacoma Intl

Mon 7/20

7:41 pm-12:55 pm

1 stop15h 14m

$262

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 8/15

1:45 pm-2:19 pm

1 stop26h 34m

Seattle/Tacoma Intl

Sat 8/22

7:41 pm-1:00 pm

1 stop15h 19m

$276

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 7/10

1:45 pm-9:49 am

1 stop22h 04m

Seattle/Tacoma Intl

Mon 7/13

3:34 pm-12:55 pm

1 stop19h 21m

$280

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 6/15

1:45 pm-9:48 am

1 stop22h 03m

Seattle/Tacoma Intl

Mon 6/22

7:41 pm-1:00 pm

1 stop15h 19m

$282

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 6/24

1:45 pm-9:48 am

1 stop22h 03m

Seattle/Tacoma Intl

Mon 6/29

3:33 pm-1:00 pm

1 stop19h 27m

$302

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 7/28

1:45 pm-9:49 am

1 stop22h 04m

Seattle/Tacoma Intl

Wed 7/29

7:41 pm-12:55 pm

1 stop15h 14m

$306

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 7/1

1:45 pm-2:18 pm

1 stop26h 33m

Seattle/Tacoma Intl

Wed 7/8

8:12 pm-12:55 pm

1 stop14h 43m

$307

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?

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 $239.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Kansas City is on a Thursday. momondo users have found tickets for Thursday departures for as low as $456. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Kansas City because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $631.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Kansas City in the evening is the least expensive time of day to depart. momondo users have found prices as low as $449 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $570. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $328 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 $289 on momondo.

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

No. A direct flight is the cheapest option for a flight between Kansas City to Seattle.

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

As of May 2026, prices for Kansas City to Seattle flights are approximately 20% cheaper 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

$228

Fastest flight time

3h 57m

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 $228. The best round-trip flight deal from Kansas City to Seattle found on momondo in the last 72 hours is $405.
The fastest flight from Kansas City to Seattle takes 3h 57m
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 57m.

  • 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
FrontierPriceFrom $113Free CancellationRating
5.6
2,951 reviews
Search Frontier flights
SouthwestPriceFrom $152Free CancellationRating
8.0
4,299 reviews
Search Southwest flights
DeltaPriceFrom $157Free CancellationRating
7.9
8,453 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $169Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $196Free CancellationRating
7.9
12,367 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,723 reviews
Search United Airlines flights
American AirlinesPriceFrom $253Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights

  • Southwest Flights From Kansas City to Seattle

    Southwest operates around 3 flights from Kansas City to Seattle every week. The average price of these flights found in the last 72 hours has been $366, 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 4,299 reviews.

  • Delta Flights From Kansas City to Seattle

    Another popular option for Kansas City to Seattle flights is Delta (7.9/10, 8,453 ratings). Delta flies from Kansas City to Seattle around 7 times per week, with deals starting from $157 round-trip and rising to an average price of around $346.

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
Lynnwood
Redmond
Kent
Tukwila
Puyallup
Marysville
Lakewood
Cle Elum
Federal Way
Centralia
Fife
Westport
Shoreline
Tumwater

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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