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Cheap flights from Kansas City to Seattle from $79

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 10/30. 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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Cheap round-trip flights

Frontier Logo
8:38 pm - 12:07 pmMCI-SEA
17h 29m1 stop
Frontier Logo
2:31 pm - 7:53 pmSEA-MCI
27h 22m1 stop
$175Frontier
Find Deal
Fri, Oct 17 - Sun, Oct 26
Frontier Logo
8:38 pm - 7:33 amMCI-SEA
12h 55m1 stop
Frontier Logo
8:28 am - 7:53 pmSEA-MCI
9h 25m2 stops
$189Frontier
Find Deal
Thu, Oct 23 - Mon, Oct 27
Frontier Logo
8:38 pm - 12:07 pmMCI-SEA
17h 29m1 stop
Frontier Logo
4:11 pm - 7:53 pmSEA-MCI
25h 42m2 stops
$199Frontier
Find Deal
Fri, Oct 17 - Sun, Oct 26
United Airlines Logo
6:00 am - 11:43 amMCI-SEA
7h 43m1 stop
United Airlines Logo
11:59 pm - 8:56 amSEA-MCI
6h 57m1 stop
$217United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
American Airlines Logo
5:23 am - 10:38 amMCI-SEA
7h 15m1 stop
American Airlines Logo
12:28 am - 8:47 amSEA-MCI
6h 19m1 stop
$225American Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
American Airlines Logo
2:57 pm - 9:23 pmMCI-SEA
8h 26m1 stop
American Airlines Logo
6:11 am - 5:08 pmSEA-MCI
8h 57m1 stop
$241American Airlines
Find Deal
Sat, Sep 6 - Wed, Sep 10
Hawaiian Airlines Logo
7:00 am - 8:54 amMCI-SEA
3h 54mnonstop
Hawaiian Airlines Logo
6:25 pm - 11:57 pmSEA-MCI
3h 32mnonstop
$257Hawaiian Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Alaska Airlines Logo
7:00 am - 9:00 amMCI-SEA
4h 00mnonstop
Alaska Airlines Logo
5:20 am - 4:01 pmSEA-MCI
8h 41m1 stop
$267Alaska Airlines
Find Deal
Sat, Sep 6 - Sat, Sep 13
Delta Logo
6:53 am - 8:55 amMCI-SEA
4h 02mnonstop
Delta Logo
5:50 pm - 11:21 pmSEA-MCI
3h 31mnonstop
$277Delta
Find Deal
Sat, Oct 11 - Mon, Oct 13
Hawaiian Airlines Logo
4:49 pm - 11:04 pmMCI-SEA
8h 15m1 stop
Hawaiian Airlines Logo
6:16 pm - 11:46 pmSEA-MCI
3h 30mnonstop
$287Hawaiian Airlines
Find Deal
Sat, Nov 1 - Mon, Nov 10

American Airlines flights from Kansas City to Seattle

Our best American Airlines deals on Kansas City to Seattle flight tickets
American Airlines
Dec 3
MCI5:23 amKansas City
7h 15m
1 stop
SEA10:38 amSeattle/Tacoma Intl
Dec 8
SEA12:28 amSeattle/Tacoma Intl
6h 19m
1 stop
MCI8:47 amKansas City
$225
Find similar
American Airlines
Sep 6
MCI2:57 pmKansas City
8h 26m
1 stop
SEA9:23 pmSeattle/Tacoma Intl
Sep 10
SEA6:11 amSeattle/Tacoma Intl
8h 57m
1 stop
MCI5:08 pmKansas City
$241
Find similar
American Airlines
Sep 5
MCI1:01 pmKansas City
8h 58m
1 stop
SEA7:59 pmSeattle/Tacoma Intl
Sep 9
SEA6:05 amSeattle/Tacoma Intl
7h 06m
1 stop
MCI3:11 pmKansas City
$260
Find similar

Frontier flights from Kansas City to Seattle

Our best Frontier deals on Kansas City to Seattle flight tickets
Frontier
Oct 17
MCI8:38 pmKansas City
17h 29m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
Oct 26
SEA2:31 pmSeattle/Tacoma Intl
27h 22m
1 stop
MCI7:53 pmKansas City
$175
Find similar
Frontier
Oct 23
MCI8:38 pmKansas City
12h 55m
1 stop
SEA7:33 amSeattle/Tacoma Intl
Oct 27
SEA8:28 amSeattle/Tacoma Intl
9h 25m
2 stops
MCI7:53 pmKansas City
$189
Find similar
Frontier
Oct 17
MCI8:38 pmKansas City
17h 29m
1 stop
SEA12:07 pmSeattle/Tacoma Intl
Oct 26
SEA4:11 pmSeattle/Tacoma Intl
25h 42m
2 stops
MCI7:53 pmKansas City
$199
Find similar

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 August 14, 2025.
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

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 10/17

8:38 pm-12:07 pm

1 stop17h 29m

Seattle/Tacoma Intl

Sun 10/26

2:31 pm-7:53 pm

1 stop27h 22m

$175

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 10/23

8:38 pm-7:33 am

1 stop12h 55m

Seattle/Tacoma Intl

Mon 10/27

8:28 am-7:53 pm

2 stops9h 25m

$189

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 10/17

8:38 pm-12:07 pm

1 stop17h 29m

Seattle/Tacoma Intl

Sun 10/26

4:11 pm-7:53 pm

2 stops25h 42m

$199

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 10/29

6:00 am-11:43 am

1 stop7h 43m

Seattle/Tacoma Intl

Wed 11/5

11:59 pm-8:56 am

1 stop6h 57m

$217

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Wed 12/3

5:23 am-10:38 am

1 stop7h 15m

Seattle/Tacoma Intl

Mon 12/8

12:28 am-8:47 am

1 stop6h 19m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 9/6

2:57 pm-9:23 pm

1 stop8h 26m

Seattle/Tacoma Intl

Wed 9/10

6:11 am-5:08 pm

1 stop8h 57m

$241

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 12/6

7:00 am-8:54 am

Nonstop3h 54m

Seattle/Tacoma Intl

Sat 12/13

6:25 pm-11:57 pm

Nonstop3h 32m

$257

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 9/6

7:00 am-9:00 am

Nonstop4h 00m

Seattle/Tacoma Intl

Sat 9/13

5:20 am-4:01 pm

1 stop8h 41m

$267

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 10/11

6:53 am-8:55 am

Nonstop4h 02m

Seattle/Tacoma Intl

Mon 10/13

5:50 pm-11:21 pm

Nonstop3h 31m

$277

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 11/1

4:49 pm-11:04 pm

1 stop8h 15m

Seattle/Tacoma Intl

Mon 11/10

6:16 pm-11:46 pm

Nonstop3h 30m

$287

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 cheapest month to fly to Seattle?

In general, January 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 $262. If you don’t want to visit Seattle in January, then you should wait until April to fly from Kansas City, when ticket prices are also cheap, with an average price of $267.

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 $449. 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 $595.

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 $476 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $518. 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 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 $334 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 $269 on momondo.

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

There are 4 cabin classes available to choose from on Kansas City to Seattle/Tacoma Intl 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 August 2025, prices for Kansas City to Seattle flights are approximately 70% 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

$79

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 $79. The best round-trip flight deal from Kansas City to Seattle found on momondo in the last 72 hours is $175.
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 near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • 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
Spirit AirlinesPriceFrom $111Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
FrontierPriceFrom $118Free CancellationRating
5.8
3,219 reviews
Search Frontier flights
DeltaPriceFrom $137Free CancellationRating
8.0
7,980 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $149Free CancellationRating
7.8
2,656 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $214Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $216Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $237Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

  • Delta Flights From Kansas City to Seattle

    Delta operates around 7 flights from Kansas City to Seattle every week. The average price of these flights found in the last 72 hours has been $323, but momondo users have found Delta deals from Kansas City to Seattle from as low as $137 round-trip. Delta has been scored 8.0/10 in 7,980 reviews.

  • Alaska Airlines Flights From Kansas City to Seattle

    Another popular option for Kansas City to Seattle flights is Alaska Airlines (8.0/10, 10,000 ratings). Alaska Airlines flies from Kansas City to Seattle around 10 times per week, with deals starting from $216 round-trip and rising to an average price of around $375.

Traveling to a place near Seattle?

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

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.

An easier way to manage your Seattle trip

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