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Cheap Flights from Kansas City (MCI) to Seattle (SEAA)

Compare Kansas City International to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Kansas City International to Seattle

Looking for a cheap last-minute deal or the best return flight from Kansas City International Airport to Seattle? If you want to travel next month, return fares start from $545. Find the lowest prices on one-way and return tickets right here.
Seattle.$370 per passenger.Departing Wed, 16 Sep, returning Wed, 23 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Kansas City International on Wed, 16 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Wed, 23 Sep, arriving in Kansas City International.Price includes taxes and charges.From $370, select.
Seattle.$411 per passenger.Departing Wed, 23 Sep, returning Sat, 3 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Wed, 23 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 3 Oct, arriving in Kansas City International.Price includes taxes and charges.From $411, select.
Seattle.$413 per passenger.Departing Mon, 24 Aug, returning Wed, 2 Sep.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Kansas City International on Mon, 24 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Wed, 2 Sep, arriving in Kansas City International.Price includes taxes and charges.From $413, select.
Seattle.$433 per passenger.Departing Tue, 1 Sep, returning Tue, 1 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 1 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 1 Sep, arriving in Kansas City International.Price includes taxes and charges.From $433, select.
Seattle.$472 per passenger.Departing Sat, 22 Aug, returning Sat, 29 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Sat, 22 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Kansas City International.Price includes taxes and charges.From $472, select.
Seattle.$472 per passenger.Departing Sat, 3 Oct, returning Tue, 6 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Sat, 3 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Kansas City International.Price includes taxes and charges.From $472, select.
Seattle.$472 per passenger.Departing Sat, 22 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Sat, 22 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 1 Sep, arriving in Kansas City International.Price includes taxes and charges.From $472, select.
Seattle.$498 per passenger.Departing Thu, 25 Jun, returning Fri, 3 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Kansas City International on Thu, 25 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Fri, 3 Jul, arriving in Kansas City International.Price includes taxes and charges.From $498, select.
Seattle.$530 per passenger.Departing Thu, 29 Oct, returning Sun, 8 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Thu, 29 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 8 Nov, arriving in Kansas City International.Price includes taxes and charges.From $530, select.
Seattle.$542 per passenger.Departing Sat, 5 Dec, returning Fri, 11 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Sat, 5 Dec, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 11 Dec, arriving in Kansas City International.Price includes taxes and charges.From $542, select.
Seattle.$543 per passenger.Departing Tue, 30 Jun, returning Sat, 4 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 30 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sat, 4 Jul, arriving in Kansas City International.Price includes taxes and charges.From $543, select.
Seattle.$545 per passenger.Departing Wed, 15 Jul, returning Thu, 23 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Wed, 15 Jul, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 23 Jul, arriving in Kansas City International.Price includes taxes and charges.From $545, select.
Seattle.$549 per passenger.Departing Sun, 1 Nov, returning Sun, 8 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Sun, 1 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 8 Nov, arriving in Kansas City International.Price includes taxes and charges.From $549, select.
Seattle.$558 per passenger.Departing Thu, 30 Jul, returning Thu, 6 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Kansas City International on Thu, 30 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Thu, 6 Aug, arriving in Kansas City International.Price includes taxes and charges.From $558, select.
Seattle.$570 per passenger.Departing Thu, 25 Jun, returning Tue, 30 Jun.Return flight with United.Outbound indirect flight with United, departs from Kansas City International on Thu, 25 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 30 Jun, arriving in Kansas City International.Price includes taxes and charges.From $570, select.
Seattle.$735 per passenger.Departing Tue, 23 Jun, returning Mon, 29 Jun.Return flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 23 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 29 Jun, arriving in Kansas City International.Price includes taxes and charges.From $735, select.

Find the cheapest month to fly from Kansas City International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kansas City International to Seattle flights are currently cheapest in September.
Jun
from $570
Jul
from $545
Aug
from $472
Sep
from $370
Oct
from $472
Nov
from $549
Dec
from $542
Jan
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Feb
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Mar
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Apr
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May
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Direct flights from Kansas City International to Seattle

Alternative Kansas City International to Seattle routes

Looking for the cheapest, fastest or easiest route from Kansas City International to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

2km from central Seattle
Closest
Search flights

Seattle Boeing Fld

11km from central Seattle
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from $370
Search flights

Paine Field

33km from central Seattle
from $1,114
Search flights

Kansas City to Seattle: Flight information

The things to know before you go.
Cheapest flight found$370
Cheapest month to flySeptember
Average flight time4 hrs, 1 min
Most popular airlineQatar Airways
Average flights per week130

Finding cheap flights from Kansas City International to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Kansas City International to Seattle is $370. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 1 minute is the average flight time from Kansas City International to Seattle.
Qatar Airways, Alaska Airlines and American Airlines fly direct from Kansas City International to Seattle.
As of June 2026, there are 130 flights per week flying from Kansas City International to Seattle.
The cheapest month to fly from Kansas City International to Seattle is usually September.
If you're flying from Kansas City International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from $370.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kansas City International Airport to Seattle on Wednesday, 16 September 2026.
Yes – the average flight time is 4 hours and 1 minute.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 14°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Southwest Airlines and Delta offer the cheapest flight tickets to Seattle.

Travelling from Kansas City International Airport (MCI) to Seattle: what you need to know

  • Expect to be travelling for 3 hours 30 minutes. That's the average time for a direct flight from Kansas City International Airport to Seattle.

  • Kansas City International Airport is located in Kansas City. Based in the UTC-8 timezone, Seattle is two hours behind Kansas City.

  • The most popular flight route is from Kansas City International Airport (MCI) to Seattle-Tacoma International Airport (SEA). You can choose from 21 services between these airports each week.

  • For a relaxed start to your MCI to Seattle flight, leave enough time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • You can expect bigger queues in popular months such as July. Arriving up to four hours in advance for an international flight and two hours for a domestic departure will give you plenty of time for security and boarding.

  • Direct Kansas City International Airport to Seattle tickets are available for booking. Seattle-Tacoma International Airport (SEA) is where you'll be touching down.

  • You can choose from various carriers that operate direct flights from Kansas City International Airport to Seattle, including:

  • Located around 26 kilometres from central Kansas City, MCI can be reached in about 25 minutes by car. The journey on public transport takes roughly 1 hour.

  • Have an early flight from Kansas City International Airport to Seattle? Avoid the hassle of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays close to MCI:

  • When it comes to Kansas City International Airport's on-time performance, data shows 78% of flights arrive within the expected time frame.

  • You'll find MCI at 601 Brasilia Avenue.

How to find the cheapest flights from Kansas City International Airport (MCI) to Seattle

  • $205 is currently the best price for a one-way Kansas City International Airport to Seattle flight. Return plane tickets start from $370. These prices may change depending on demand and availability.

  • Don't leave things to the last minute. You're more likely to find cheap flights from MCI to Seattle if you book in advance. Airlines often have some amazing early bird deals.

  • The 'Whole month' search tool will show you the cheapest tickets from Kansas City International Airport to Seattle across every month. It's an easy way to snap up a bargain if your travel dates aren't set in stone.

  • Cut down on the time spent looking for cheap flights from MCI to Seattle by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare pops up.

  • Tailor your trip with filters. Pick your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Kansas City International Airport to Seattle.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. If you're grabbing a taxi or a ride-share, the drive will take roughly 25 minutes.

  • It typically takes 35 minutes if you're using public transport.

  • The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Kansas City International Airport to Seattle. Reserve one of these accommodation options near SEA instead:

  • To secure the lowest price, reserve your vehicle from Seattle-Tacoma International Airport around one week ahead of your flight from MCI to Seattle.

Seattle Paine Field International Airport (PAE)

  • After your flight from Kansas City International Airport to Seattle has hit the runway, you can make your way to the city centre in around 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • If you choose to travel on public transport, you'll reach the centre in 1 hour 30 minutes or so.

  • Hang the 'Do not disturb' sign on your door and rest at a hotel close to PAE. Here are a few options where you can settle in after your MCI to Seattle flight:

  • Generally, the earlier you book, the better the deals and selection of vehicles. Secure your ride from PAE as soon as you know your dates.

King County International Airport (BFI)

  • Step off your flight from Kansas City International Airport to Seattle and head straight for your hotel or start sightseeing right away. Central Seattle is around 11 kilometres from King County International Airport (BFI) and usually takes 20 minutes to reach driving.

  • If you travel by public transport, the journey time is about 35 minutes.

  • Find a hotel near BFI and go from the plane to your bed in a flash. Whether you have a late MCI to Seattle flight or just want to simplify your travel plans, these stays are all about convenience:

  • Booking at least a few weeks ahead of your flight from Kansas City International Airport to Seattle is a smart way to go. Along with more affordable prices, you'll get a better selection of vehicle makes and models at BFI.

Best time to go to Seattle

  • December is the quietest month for flights from Kansas City International Airport to Seattle, while July is the most popular. Choose the best time to visit Seattle based on whether you want a laid-back vibe or a more bustling atmosphere.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Kansas City International Airport to Seattle plane ticket then if that's your definition of good weather.

  • If you like cooler conditions, look for a cheap ticket from MCI to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • Start your Seattle trip right by choosing the ideal place to stay. As soon as you've booked your flight from Kansas City International Airport to Seattle, browse our range of hotels including:

  • There are so many things to discover in this city it can be tricky to know where to begin. Pike Place Market, Space Needle and Seattle Skyline are leading attractions which should feature on every Seattle itinerary.

Explore more of the United States

  • Portland is just one of the many cities in the United States waiting to be discovered after you've seen Seattle. Around 241 kilometres away to the south, top sights here include Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • Spokane is another standout destination in the United States and is around 370 kilometres east of Seattle. No journey is complete without experiencing Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

Plan the rest of your trip from Kansas City to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.