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Cheap flights from Kansas City to Seattle from $61

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 1/4. 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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Cheap round-trip flights

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Delta Logo
7:50 am - 10:02 amMCI-SEA
4h 12mnonstop
Delta Logo
5:50 pm - 11:22 pmSEA-MCI
3h 32mnonstop
$199Delta
Find Deal
Thu, Dec 11 - Tue, Dec 16
Delta Logo
6:22 pm - 12:20 amMCI-SEA
7h 58m1 stop
Delta Logo
5:50 pm - 11:22 pmSEA-MCI
3h 32mnonstop
$209Delta
Find Deal
Thu, Dec 11 - Tue, Dec 16
United Airlines Logo
7:30 am - 3:29 pmMCI-SEA
9h 59m1 stop
United Airlines Logo
8:40 am - 4:08 pmSEA-MCI
5h 28m1 stop
$217United Airlines
Find Deal
Thu, Dec 11 - Tue, Jan 20
Delta Logo
5:12 pm - 11:58 pmMCI-SEA
8h 46m1 stop
Delta Logo
5:25 am - 1:27 pmSEA-MCI
6h 02m1 stop
$219Delta
Find Deal
Thu, Dec 11 - Sun, Dec 14
United Airlines Logo
6:00 am - 10:09 amMCI-SEA
6h 09m1 stop
United Airlines Logo
9:05 am - 8:47 pmSEA-MCI
9h 42m2 stops
$222United Airlines
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Tue, Dec 9 - Wed, Dec 10
Multiple Airlines Logo
8:09 pm - 11:53 amMCI-SEA
17h 44m1 stop
Multiple Airlines Logo
5:21 pm - 8:44 pmSEA-MCI
25h 23m2 stops
$223Multiple Airlines
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Thu, Dec 4 - Mon, Dec 8
Frontier Logo
8:09 pm - 2:45 pmMCI-SEA
20h 36m2 stops
Frontier Logo
1:25 pm - 7:50 pmSEA-MCI
28h 25m1 stop
$225Frontier
Find Deal
Thu, Dec 11 - Thu, Dec 18
Frontier Logo
2:48 pm - 11:53 amMCI-SEA
23h 05m1 stop
Frontier Logo
2:54 pm - 7:51 pmSEA-MCI
26h 57m1 stop
$226Frontier
Find Deal
Fri, Dec 12 - Fri, Dec 19
Alaska Airlines Logo
1:34 pm - 6:55 pmMCI-SEA
7h 21m1 stop
Alaska Airlines Logo
8:15 am - 1:50 pmSEA-MCI
3h 35mnonstop
$228Alaska Airlines
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Thu, Dec 11 - Tue, Jan 20
Multiple Airlines Logo
8:45 pm - 10:11 amMCI-SEA
15h 26m2 stops
Multiple Airlines Logo
6:33 pm - 2:52 pmSEA-MCI
18h 19m1 stop
$229Multiple Airlines
Find Deal
Mon, Dec 22 - Mon, Jan 5

American Airlines flights from Kansas City to Seattle

Our best American Airlines deals on Kansas City to Seattle flight tickets
American Airlines
Dec 2
MCI2:49 pmKansas City
8h 27m
1 stop
SEA9:16 pmSeattle/Tacoma Intl
Dec 7
SEA12:31 amSeattle/Tacoma Intl
7h 24m
1 stop
MCI9:55 amKansas City
$238
Find similar
American Airlines
Dec 11
MCI6:44 amKansas City
10h 11m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
Dec 15
SEA12:31 amSeattle/Tacoma Intl
7h 24m
1 stop
MCI9:55 amKansas City
$289
Find similar
American Airlines
Nov 26
MCI2:48 pmKansas City
7h 26m
1 stop
SEA8:14 pmSeattle/Tacoma Intl
Dec 1
SEA12:59 amSeattle/Tacoma Intl
7h 21m
1 stop
MCI10:20 amKansas City
$441
Find similar

Delta flights from Kansas City to Seattle

Our best Delta deals on Kansas City to Seattle flight tickets
Delta
Dec 11
MCI6:22 pmKansas City
7h 58m
1 stop
SEA12:20 amSeattle/Tacoma Intl
Dec 14
SEA5:25 amSeattle/Tacoma Intl
6h 02m
1 stop
MCI1:27 pmKansas City
$219
Find similar
Delta
Mar 10
MCI7:55 amKansas City
4h 10m
SEA10:05 amSeattle/Tacoma Intl
Mar 11
SEA5:30 pmSeattle/Tacoma Intl
3h 29m
MCI10:59 pmKansas City
$239
Find similar
Delta
Mar 10
MCI7:00 amKansas City
9h 45m
1 stop
SEA2:45 pmSeattle/Tacoma Intl
Mar 11
SEA5:30 pmSeattle/Tacoma Intl
3h 29m
MCI10:59 pmKansas City
$249
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 November 13, 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

Thu 12/11

7:50 am-10:02 am

Nonstop4h 12m

Seattle/Tacoma Intl

Tue 12/16

5:50 pm-11:22 pm

Nonstop3h 32m

$199

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

6:22 pm-12:20 am

1 stop7h 58m

Seattle/Tacoma Intl

Tue 12/16

5:50 pm-11:22 pm

Nonstop3h 32m

$209

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

7:30 am-3:29 pm

1 stop9h 59m

Seattle/Tacoma Intl

Tue 1/20

8:40 am-4:08 pm

1 stop5h 28m

$217

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

5:12 pm-11:58 pm

1 stop8h 46m

Seattle/Tacoma Intl

Sun 12/14

5:25 am-1:27 pm

1 stop6h 02m

$219

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 12/9

6:00 am-10:09 am

1 stop6h 09m

Seattle/Tacoma Intl

Wed 12/10

9:05 am-8:47 pm

2 stops9h 42m

$222

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/4

8:09 pm-11:53 am

1 stop17h 44m

Seattle/Tacoma Intl

Mon 12/8

5:21 pm-8:44 pm

2 stops25h 23m

$223

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

8:09 pm-2:45 pm

2 stops20h 36m

Seattle/Tacoma Intl

Thu 12/18

1:25 pm-7:50 pm

1 stop28h 25m

$225

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 12/12

2:48 pm-11:53 am

1 stop23h 05m

Seattle/Tacoma Intl

Fri 12/19

2:54 pm-7:51 pm

1 stop26h 57m

$226

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Thu 12/11

1:34 pm-6:55 pm

1 stop7h 21m

Seattle/Tacoma Intl

Tue 1/20

8:15 am-1:50 pm

Nonstop3h 35m

$228

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Mon 12/22

8:45 pm-10:11 am

2 stops15h 26m

Seattle/Tacoma Intl

Mon 1/5

6:33 pm-2:52 pm

1 stop18h 19m

$229

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, November 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 $257. If you don’t want to visit Seattle in November, then you should wait until January to fly from Kansas City, when ticket prices are also cheap, with an average price of $262.

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 $472. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday 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 $623.

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 $477 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $568. 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 $332 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 $282 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.

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

As of November 2025, prices for Kansas City to Seattle flights are approximately 11% 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

$238

Fastest flight time

3h 59m

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 $238. The best round-trip flight deal from Kansas City to Seattle found on momondo in the last 72 hours is $423.
The fastest flight from Kansas City to Seattle takes 3h 59m
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 4h 10m.

  • 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
8,139 reviews
Search Spirit Airlines flights
FrontierPriceFrom $119Free CancellationRating
5.8
3,114 reviews
Search Frontier flights
DeltaPriceFrom $140Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $149Free CancellationRating
7.8
2,809 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom $214Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $216Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
SouthwestPriceFrom $237Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $238Free CancellationRating
8.0
11,281 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Kansas City to Seattle

    Alaska Airlines 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 $394, but momondo users have found Alaska Airlines deals from Kansas City to Seattle from as low as $238 round-trip. Alaska Airlines has been scored 8.0/10 in 11,281 reviews.

  • Delta Flights From Kansas City to Seattle

    Another popular option for Kansas City to Seattle flights is Delta (7.9/10, 8,007 ratings). Delta flies from Kansas City to Seattle around 7 times per week, with deals starting from $140 round-trip and rising to an average price of around $340.

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