$109 Cheap United flights Seattle (SEA) to Kansas City (MCI)

View $109 flight on Tue, Nov 18, 2025Opens in a new window

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$109 Cheap United flights Seattle (SEA) to Kansas City (MCI)

Prices were available within the past 7 days and start at $109 for one-way flights and $212 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 23 - Wed, Sep 24
SEA
Seattle
MCI
Kansas City
$212 Roundtrip, found 11 hours ago
$212
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 23 from Seattle to Kansas City, returning Wed, Sep 24, priced at $212 found 11 hours ago
United
Wed, Oct 1 - Tue, Oct 7
SEA
Seattle
MCI
Kansas City
$217 Roundtrip, just found
$217
Roundtrip
just found
Select United flight, departing Wed, Oct 1 from Seattle to Kansas City, returning Tue, Oct 7, priced at $217 just found
United
Mon, Aug 25 - Sun, Aug 31
SEA
Seattle
MCI
Kansas City
$219 Roundtrip, just found
$219
Roundtrip
just found
Select United flight, departing Mon, Aug 25 from Seattle to Kansas City, returning Sun, Aug 31, priced at $219 just found
United
Wed, Sep 24 - Tue, Sep 30
SEA
Seattle
MCI
Kansas City
$222 Roundtrip, just found
$222
Roundtrip
just found
Select United flight, departing Wed, Sep 24 from Seattle to Kansas City, returning Tue, Sep 30, priced at $222 just found
United
Sat, Sep 27 - Fri, Oct 3
SEA
Seattle
MCI
Kansas City
$227 Roundtrip, just found
$227
Roundtrip
just found
Select United flight, departing Sat, Sep 27 from Seattle to Kansas City, returning Fri, Oct 3, priced at $227 just found
United
Thu, Sep 25 - Tue, Sep 30
SEA
Seattle
MCI
Kansas City
$232 Roundtrip, found 2 hours ago
$232
Roundtrip
found 2 hours ago
Select United flight, departing Thu, Sep 25 from Seattle to Kansas City, returning Tue, Sep 30, priced at $232 found 2 hours ago
Flights from Seattle (SEA) to Kansas City (MCI)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Kansas City Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
1485 mi
Average flight time
5 hours 51 mins

Frequently asked questions

How much is a United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Kansas City Intl. Airport (MCI)?
Landing cheap one-way United Airlines flights from SEA to MCI from $109 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly return fares from $212 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to MCI with United Airlines?
United Airlines flights to Kansas City tend to be more affordable in the low-season months of January and November. Whether you're searching for a one-way or a return ticket, you could score a better deal then.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Kansas City Intl. Airport (MCI) with United Airlines?
Look for cheap United Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Kansas City Intl. Airport (MCI) one to three months prior to your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Kansas City Intl. Airport (MCI)?
Use the "Nonstop" filter when looking for direct United Airlines flights from SEA to MCI. It's also an easy way to compare other carriers offering the same nonstop journey.
What is the earliest United Airlines flight from SEA to MCI?
Filter your results by "Early Morning" and "Morning" to browse the earliest departures from SEA to MCI. Heading off early means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Kansas City?
United Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Kansas City touch down at Kansas City Intl. Airport (MCI). This is the main gateway here.
Why fly with United Airlines from SEA to MCI?
A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to depart from SEA to MCI with United Airlines. Plus, when you join Expedia's free One Key™ program, you can earn OneKeyCash™* in addition to any airline loyalty program earnings. It's yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Kansas City Intl. Airport (MCI)?
Changes are typically free within 24 hours of making your booking, but your airline may charge you after that. For further information about altering your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to update your itinerary without extra charges, tick the "Changes included" or "No cancel fee" filter when organizing your next getaway.

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