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Cheap flights from Kansas City to Seattle from $192

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 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
Delta Logo
7:15 am - 9:12 am
MCI
-
SEA
3h 57mnonstop
Delta Logo
5:30 pm - 11:02 pm
SEA
-
MCI
3h 32mnonstop
$370Delta
Thu, Aug 20 - Tue, Aug 25
Delta Logo
7:15 am - 9:12 am
MCI
-
SEA
3h 57mnonstop
Delta Logo
5:30 pm - 11:02 pm
SEA
-
MCI
3h 32mnonstop
$371Delta
Sun, Aug 16 - Sat, Aug 29
Frontier Logo
4:32 pm - 10:39 am
MCI
-
SEA
20h 07m
1 stop
Frontier Logo
8:13 pm - 5:10 pm
SEA
-
MCI
18h 57m
2 stops
$372Frontier
Mon, Jul 13 - Tue, Jul 21
Frontier Logo
4:32 pm - 10:39 am
MCI
-
SEA
20h 07m
1 stop
Frontier Logo
7:06 pm - 1:00 pm
SEA
-
MCI
15h 54m
1 stop
$373Frontier
Fri, Jul 24 - Mon, Jul 27
Frontier Logo
1:45 pm - 9:04 am
MCI
-
SEA
21h 19m
1 stop
Frontier Logo
8:53 pm - 3:47 pm
SEA
-
MCI
16h 54m
1 stop
$374Frontier
Tue, Aug 4 - Sun, Aug 9
American Airlines Logo
11:20 am - 4:41 pm
MCI
-
SEA
7h 21m
1 stop
American Airlines Logo
2:07 pm - 10:50 pm
SEA
-
MCI
6h 43m
1 stop
$375American Airlines
Tue, Aug 18 - Wed, Aug 26
Delta Logo
7:15 am - 9:12 am
MCI
-
SEA
3h 57mnonstop
Delta Logo
9:40 am - 5:00 pm
SEA
-
MCI
5h 20m
1 stop
$376Delta
Tue, Aug 18 - Tue, Aug 25
Frontier Logo
1:45 pm - 9:04 am
MCI
-
SEA
21h 19m
1 stop
Frontier Logo
8:53 pm - 1:00 pm
SEA
-
MCI
14h 07m
2 stops
$377Frontier
Tue, Aug 4 - Sun, Aug 9
Frontier Logo
1:45 pm - 10:39 am
MCI
-
SEA
22h 54m
2 stops
Frontier Logo
7:06 pm - 1:00 pm
SEA
-
MCI
15h 54m
1 stop
$378Frontier
Wed, Jul 15 - Sat, Jul 18
Frontier Logo
1:45 pm - 9:17 am
MCI
-
SEA
21h 32m
1 stop
Frontier Logo
7:06 pm - 1:00 pm
SEA
-
MCI
15h 54m
1 stop
$379Frontier
Sat, Jul 18 - Tue, Jul 21

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Delta flights from Kansas City to Seattle

Our best Delta deals on Kansas City to Seattle flight tickets
Delta
Aug 20
MCI7:15 amKansas City
3h 57m
SEA9:12 amSeattle/Tacoma Intl
Aug 25
SEA5:30 pmSeattle/Tacoma Intl
3h 32m
MCI11:02 pmKansas City
$370
Delta
Aug 16
MCI7:15 amKansas City
3h 57m
SEA9:12 amSeattle/Tacoma Intl
Aug 29
SEA5:30 pmSeattle/Tacoma Intl
3h 32m
MCI11:02 pmKansas City
$371
Delta
Aug 18
MCI7:15 amKansas City
3h 57m
SEA9:12 amSeattle/Tacoma Intl
Aug 25
SEA9:40 amSeattle/Tacoma Intl
5h 20m
1 stop
MCI5:00 pmKansas City
$376

American Airlines flights from Kansas City to Seattle

Our best American Airlines deals on Kansas City to Seattle flight tickets
American Airlines
Aug 18
MCI11:20 amKansas City
7h 21m
1 stop
SEA4:41 pmSeattle/Tacoma Intl
Aug 26
SEA2:07 pmSeattle/Tacoma Intl
6h 43m
1 stop
MCI10:50 pmKansas City
$375
American Airlines
Aug 16
MCI5:14 pmKansas City
7h 03m
1 stop
SEA10:17 pmSeattle/Tacoma Intl
Aug 29
SEA5:50 amSeattle/Tacoma Intl
7h 25m
1 stop
MCI3:15 pmKansas City
$388
American Airlines
Aug 3
MCI2:30 pmKansas City
9h 56m
1 stop
SEA10:26 pmSeattle/Tacoma Intl
Aug 12
SEA5:00 amSeattle/Tacoma Intl
9h 29m
1 stop
MCI4:29 pmKansas City
$391

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 June 28, 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
Quickest round-trip

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 8/20

7:15 am-9:12 am

Nonstop3h 57m

Seattle/Tacoma Intl

Tue 8/25

5:30 pm-11:02 pm

Nonstop3h 32m

$370

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sun 8/16

7:15 am-9:12 am

Nonstop3h 57m

Seattle/Tacoma Intl

Sat 8/29

5:30 pm-11:02 pm

Nonstop3h 32m

$371

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 7/13

4:32 pm-10:39 am

1 stop20h 07m

Seattle/Tacoma Intl

Tue 7/21

8:13 pm-5:10 pm

2 stops18h 57m

$372

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 7/24

4:32 pm-10:39 am

1 stop20h 07m

Seattle/Tacoma Intl

Mon 7/27

7:06 pm-1:00 pm

1 stop15h 54m

$373

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 8/4

1:45 pm-9:04 am

1 stop21h 19m

Seattle/Tacoma Intl

Sun 8/9

8:53 pm-3:47 pm

1 stop16h 54m

$374

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 8/18

11:20 am-4:41 pm

1 stop7h 21m

Seattle/Tacoma Intl

Wed 8/26

2:07 pm-10:50 pm

1 stop6h 43m

$375

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 8/18

7:15 am-9:12 am

Nonstop3h 57m

Seattle/Tacoma Intl

Tue 8/25

9:40 am-5:00 pm

1 stop5h 20m

$376

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 8/4

1:45 pm-9:04 am

1 stop21h 19m

Seattle/Tacoma Intl

Sun 8/9

8:53 pm-1:00 pm

2 stops14h 07m

$377

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 7/15

1:45 pm-10:39 am

2 stops22h 54m

Seattle/Tacoma Intl

Sat 7/18

7:06 pm-1:00 pm

1 stop15h 54m

$378

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 7/18

1:45 pm-9:17 am

1 stop21h 32m

Seattle/Tacoma Intl

Tue 7/21

7:06 pm-1:00 pm

1 stop15h 54m

$379

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 $464. 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 $621.

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 $462 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $541. 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 $339 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 $297 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?

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 June 2026, prices for Kansas City to Seattle flights are approximately 8% 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

$258

Fastest flight time

3h 45m

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 $258. The best round-trip flight deal from Kansas City to Seattle found on momondo in the last 72 hours is $400.
The fastest flight from Kansas City to Seattle takes 3h 45m
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 45m.

  • 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
2,856 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.8
2,826 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $152Free CancellationRating
7.9
4,246 reviews
Search Southwest flights
DeltaPriceFrom $157Free CancellationRating
7.8
8,456 reviews
Search Delta flights
Alaska AirlinesPriceFrom $198Free CancellationRating
7.9
12,585 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,899 reviews
Search United Airlines flights
American AirlinesPriceFrom $337Free CancellationRating
7.1
11,776 reviews
Search American Airlines flights

  • Alaska Airlines Flights From Kansas City to Seattle

    Alaska Airlines operates around 8 flights from Kansas City to Seattle every week. The average price of these flights found in the last 72 hours has been $404, but momondo users have found Alaska Airlines deals from Kansas City to Seattle from as low as $198 round-trip. Alaska Airlines has been scored 7.9/10 in 12,586 reviews.

  • Delta Flights From Kansas City to Seattle

    Another popular option for Kansas City to Seattle flights is Delta (7.8/10, 8,455 ratings). Delta flies from Kansas City to Seattle around 4 times per week, with deals starting from $157 round-trip and rising to an average price of around $372.

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
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Centralia
Kirkland
Shoreline
Westport

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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