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Cheap Flights from Kansas City International to Seattle

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 to Seattle? Find the lowest prices on one-way and return tickets right here.
Seattle.ج.م.‏ 3,100 per passenger.Departing Wed, 19 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Kansas City International on Wed, 19 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 3,100, select.
Seattle.ج.م.‏ 3,213 per passenger.Departing Thu, 11 Dec.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Kansas City International on Thu, 11 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 3,213, select.
Seattle.ج.م.‏ 4,953 per passenger.Departing Mon, 5 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Kansas City International on Mon, 5 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 4,953, select.
Seattle.ج.م.‏ 5,200 per passenger.Departing Thu, 13 Nov.One-way flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Thu, 13 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 5,200, select.
Seattle.ج.م.‏ 5,380 per passenger.Departing Tue, 10 Feb.One-way flight with United.Outbound indirect flight with United, departs from Kansas City International on Tue, 10 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 5,380, select.
Seattle.ج.م.‏ 5,380 per passenger.Departing Tue, 10 Mar.One-way flight with United.Outbound indirect flight with United, departs from Kansas City International on Tue, 10 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 5,380, select.
Seattle.ج.م.‏ 6,582 per passenger.Departing Tue, 10 Feb.One-way flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 10 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 6,582, select.
Seattle.ج.م.‏ 6,582 per passenger.Departing Tue, 10 Mar.One-way flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 10 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 6,582, select.
Seattle.ج.م.‏ 6,647 per passenger.Departing Thu, 11 Dec.One-way flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departs from Kansas City International on Thu, 11 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 6,647, select.
Seattle.ج.م.‏ 7,504 per passenger.Departing Thu, 30 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Kansas City International on Thu, 30 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 7,504, select.
Seattle.ج.م.‏ 8,959 per passenger.Departing Mon, 5 Jan.One-way flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Mon, 5 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 8,959, select.
Seattle.ج.م.‏ 10,058 per passenger.Departing Tue, 14 Apr.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Kansas City International on Tue, 14 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 10,058, select.
Seattle.ج.م.‏ 10,825 per passenger.Departing Wed, 1 Jul.One-way flight with United.Outbound indirect flight with United, departs from Kansas City International on Wed, 1 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 10,825, select.
Seattle.ج.م.‏ 11,304 per passenger.Departing Tue, 14 Apr.One-way flight with Delta.Outbound direct flight with Delta departs from Kansas City International on Tue, 14 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From ج.م.‏ 11,304, 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 November.
Oct
from ج.م.‏ 7,504
Nov
from ج.م.‏ 3,100
Dec
from ج.م.‏ 3,213
Jan
from ج.م.‏ 4,953
Feb
from ج.م.‏ 5,380
Mar
from ج.م.‏ 5,380
Apr
from ج.م.‏ 10,058
May
Find prices
Jun
from ج.م.‏ 11,304
Jul
from ج.م.‏ 10,825
Aug
Find prices
Sep
Find prices

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.

Kansas City to Seattle: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 3,100
Cheapest month to flyNovember
Average flight time4 hrs, 5 mins
Most popular airlineAir Tahiti Nui
Average flights per week516

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 ج.م.‏ 7,307. 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 5 minutes is the average flight time from Kansas City International to Seattle.
Air Tahiti Nui, Alaska Airlines and Hawaiian Airlines fly direct from Kansas City International to Seattle.
As of October 2025, there are 129 flights per week flying from Kansas City International to Seattle.
The cheapest month to fly from Kansas City International to Seattle is usually January.
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 ج.م.‏ 7,307.
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 Monday, 5 January 2026.
Yes – the average flight time is 4 hours and 5 minutes.
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 October, the average temperature is usually around 10°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

  • Hop on a direct flight from Kansas City International Airport to Seattle and you'll be in the air for around 3 hours 30 minutes.

  • The timezone in Seattle is UTC-7. The city is two hours behind Kansas City, where Kansas City International Airport is located.

  • Kansas City International Airport (MCI) to Seattle-Tacoma International Airport (SEA) is the most traveled route, with 22 weekly flights to choose from. If you have things to do before leaving, the last flight from MCI to SEA is with Alaska Airlines at 19:59. Go for the first departure operated by Delta Air Lines at 06:25 if you want to fly out earlier.

  • For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your MCI to Seattle flight.

  • Delays at security and check-in are likely if you're flying during high season, so allow a little extra breathing room. A good rule for peak times? Arrive up to four hours early for international flights and two hours for domestic departures.

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

  • You'll find a good selection of airlines that operate direct flights from Kansas City International Airport to Seattle, including:

  • Travelling from central Kansas City to MCI takes about 1 hour 10 minutes by public transport. If you drive, ride-share or get a cab, you'll cover the 26 kilometres in 20 minutes or so, depending on traffic conditions.

  • Want a leisurely start to your journey? Stay near MCI. Whether you're catching an early flight from Kansas City International Airport to Seattle or just don't like being rushed, these hotels have you covered:

  • Kansas City International Airport has an excellent on-time performance, making delays less likely. Departures from MCI make it to their destination as scheduled 81.34% of the time.

  • The address for MCI is 601 Brasilia Avenue.

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

  • ج.م.‏ 3,100 is currently the lowest price for a one-way Kansas City International Airport to Seattle flight. Return flight tickets start at ج.م.‏ 7,307. These prices can change based on availability and demand.

  • To score cheap flights from MCI to Seattle, reserve your journey one month ahead of your planned departure.

  • The best month for picking up cheap Kansas City International Airport to Seattle tickets is May. Use the 'Whole month' tool to compare flight prices, then choose the dates that offer the biggest savings.

  • Save time searching for cheap flights from MCI to Seattle by setting up a Price Alert. We'll send you an email or notification through the app when fares go down.

  • Select your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Kansas City International Airport to Seattle by 'Best,' 'Fastest' or 'Cheapest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes about 20 minutes by car. The centre is roughly 23 kilometres away.

  • Travelling to the centre on public transport takes about 55 minutes.

  • If you have a late flight from Kansas City International Airport to Seattle, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and sleeping soon after at one of these accommodation options near SEA:

  • Go where the road takes you with a Seattle-Tacoma International Airport rental car. Pick up a set of wheels from Thrifty, Europcar or Budget and chase adventure across Seattle and beyond.

  • Get the best deal by reserving your ride from Seattle-Tacoma International Airport about one week ahead of your flight from MCI to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Lake Union Sea Plane Base Airport (LKE) is around 3 kilometres from central Seattle. Once you've hopped off your flight from Kansas City International Airport to Seattle, it'll take you around 10 minutes to reach the heart of the city in a cab or ride-share.

  • If you're catching public transport, it'll take about 25 minutes.

  • After stepping off your MCI to Seattle flight, rest your head at a hotel near LKE. These are some great accommodation options that'll help you get into relaxation mode:

Best time to go to Seattle

  • Before booking your flights from Kansas City International Airport to Seattle, consider which time of year is best for you. Peak season in Seattle offers a bustling atmosphere and plenty of activities, while low season brings better deals on hotels and smaller crowds.

  • Book a Kansas City International Airport to Seattle flight ticket with a departure in August if you're eager to experience the city during its warmest month. Expect temperatures to range from 12ºC to 28ºC.

  • Look for cheap tickets from MCI to Seattle in February if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC and 11ºC on average.

More about Seattle

  • After booking your flight from Kansas City International Airport to Seattle, find a hotel that offers the right mix of comfort and location. Make one of these options your base for exploring Seattle:

  • There are so many things to see and do in this city it can be difficult to know where to start. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are top sights which should be on every Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to explore other parts of United States. Travel about 241 kilometres south to Portland to tick off its leading sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, there's plenty to keep you on the go.

  • Spokane is another favourite destination in United States and is around 370 kilometres east of Seattle. No journey is complete without seeing Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

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 45 days.