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Uncover the best deals on Kansas City to Seattle flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest MCI - SEA Flights
Useful information for finding best airline tickets from Kansas City International to Seattle Tacoma International on your next trip.
Cheapest Round Trip Flight
$189
Frontier Airlines
• 1 stop
• 33h 56m
Sep 20 – Sep 26
The cheapest round trip flight from Kansas City to Seattle (MCI-SEA-MCI) is currently $189
Cheapest Direct Flight
$283
Delta Airlines
• nonstop
• 5h 51m
Sep 20
The cheapest nonstop flight from Kansas City to Seattle (MCI-SEA) is currently $283
Fastest Flight
5h 51m
The fastest nonstop flight from Kansas City to Seattle (MCI-SEA) takes 5h 51m
Top Airlines Flying from Kansas City to Seattle
Latest Flight Deals from Kansas City (MCI) to Seattle (SEA)
Compare and book low fare round-trip air tickets from Kansas City to Seattle. Ideal for travelers with confirmed return itineraries.
Sep 20 - Sep 26, Economy
Kansas City → Seattle
33h 56m
8:32 PM - 3:08 PM • 1 stop
Kansas City → Seattle
36h 40m
9:45 PM - 9:45 PM • 1 stop
Frontier Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
35h 58m
10:30 PM - 6:28 PM • 1 stop
Kansas City → Seattle
36h 40m
9:45 PM - 9:45 PM • 1 stop
Frontier Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 57m
7:00 AM - 8:57 AM • nonstop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 55m
1:34 PM - 3:29 PM • nonstop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
9h 18m
2:53 PM - 6:51 PM • 1 stop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Flying to Seattle soon? We've surfaced some of the most affordable last-minute flights from Kansas City to Seattle, ideal for urgent plans or spontaneous trips.
Sep 20 - Sep 26, Economy
Kansas City → Seattle
33h 56m
8:32 PM - 3:08 PM • 1 stop
Kansas City → Seattle
36h 40m
9:45 PM - 9:45 PM • 1 stop
Frontier Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
35h 58m
10:30 PM - 6:28 PM • 1 stop
Kansas City → Seattle
36h 40m
9:45 PM - 9:45 PM • 1 stop
Frontier Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 57m
7:00 AM - 8:57 AM • nonstop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 55m
1:34 PM - 3:29 PM • nonstop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
9h 18m
2:53 PM - 6:51 PM • 1 stop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
Looking for the fastest way to Seattle? These direct flight options from MCI to SEA offer both convenience and value—no layovers, just straight to your destination.
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 51m
7:24 AM - 9:15 AM • nonstop
Kansas City → Seattle
5h 36m
5:40 PM - 11:16 PM • nonstop
Delta Airlines
Sep 20 - Sep 26, Economy
Kansas City → Seattle
5h 57m
7:00 AM - 8:57 AM • nonstop
Kansas City → Seattle
5h 32m
6:27 PM - 11:59 PM • nonstop
Alaska Airlines
FAQs on Kansas City to Seattle Flights
What are the airports in Kansas City?
MCI
What’s the most popular airline flying from MCI to SEA?
The most popular airline flying from Kansas City to Seattle are
Can I fly from MCI to SEA non-stop?
Yes, you can fly MCI to SEA non-stop on
Which airlines fly nonstop between Kansas City and Seattle?
The non-stop flights between Kansas City and Seattle are .
What’s the earliest departure time from MCI to SEA Airport?
The earliest flight leaves MCI at 7:00 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Kansas City to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from MCI to SEA?
Read the fare rules of the Kansas City to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Kansas City and Seattle?
operate flights between Kansas City and Seattle
How long does a flight from Kansas City to Seattle take?
It takes approximately 4 hour to fly non-stop from MCI to SEA, which is 1489.33 miles by air.
Which airlines provide the cheapest flights from Kansas City (MCI) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from MCI were found on AS : USD 325
Do I need a passport to fly between MCI and SEA?
No
What’s the latest departure time from MCI to SEA ?
The last flight leaves MCI at 10:30 pm
Kansas City (MCI) to Seattle (SEA): Airport Information
| Origin Airport | Kansas City International , Kansas City, US |
| Destination Airport | Seattle Tacoma International , Seattle, US |
| Distance | 1489 miles |
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