$60+ Cheap flights from Kansas City to Seattle (MCI - SEA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
Sep 15 — Sep 221
Round-trip
1 adult, Economy
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Find cheap flights from Kansas City to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Kansas City to Seattle/Tacoma Intl are usually found in February or April, booked 24 days in advance, depart on a Saturday or Thursday and return on a Tuesday
Cheap flight deals from Kansas City to Seattle
Cheapest
Best
Last-minute
One-way
Cheapest flights from Kansas City to SeattleExplore the most affordable flight options available from Kansas City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2026.
Explore the most affordable flight options available from Kansas City to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:38 pm -
1 stop21h 41m
Wed 9/28:48 pm -
2 stops14h 05m
Deal found 8/11![Frontier logo]()
$331
This Expedia deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:34 pm -
Nonstop3h 55m
Thu 9/244:27 pm -
1 stop25h 10m
Deal found 8/11![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:43 pm -
1 stop20h 29m
Wed 10/287:41 pm -
1 stop15h 41m
Deal found 8/12![Frontier logo]()
$334
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:49 am -
1 stop7h 02m
Wed 9/3011:57 pm -
1 stop6h 41m
Deal found 8/14![American Airlines logo]()
$337
This Expedia deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:30 pm -
1 stop13h 12m
Wed 9/306:27 pm -
Nonstop3h 32m
Deal found 8/15![Multiple Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
1 stop6h 01m
Sat 9/1212:05 pm -
2 stops9h 25m
Deal found 8/11![United Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:38 pm -
1 stop21h 41m
Mon 8/311:35 pm -
2 stops43h 06m
Deal found 8/11![Frontier logo]()
$340
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am -
Nonstop3h 57m
Sat 10/38:40 am -
1 stop6h 38m
Deal found 8/14![Alaska Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:14 am -
2 stops9h 00m
Sat 9/195:00 am -
1 stop5h 37m
Deal found 8/15![United Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:53 pm -
1 stop5h 58m
Sun 9/139:45 pm -
1 stop22h 00m
Deal found 8/15![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:34 pm -
Nonstop3h 55m
Thu 9/109:45 pm -
1 stop22h 00m
Deal found 8/15![Multiple Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am -
Nonstop3h 57m
Wed 9/99:45 pm -
1 stop22h 00m
Deal found 8/11![Multiple Airlines logo]()
$345
Best flights from Kansas City to SeattleDiscover carefully curated flight deals from Kansas City to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2026.
Discover carefully curated flight deals from Kansas City to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:53 pm -
1 stop5h 58m
Tue 9/156:27 pm -
Nonstop3h 32m
Deal found 8/15![Alaska Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:15 am -
2 stops8h 20m
Sat 10/1711:05 am -
1 stop7h 35m
Deal found 8/15![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:11 pm -
1 stop5h 48m
Fri 10/236:43 pm -
2 stops12h 24m
Deal found 8/13![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:16 am -
1 stop9h 34m
Sun 10/1111:10 pm -
1 stop8h 37m
Deal found 8/15![Delta logo]()
$417
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/257:20 am -
2 stops10h 50m
Sun 1/319:15 am -
1 stop7h 10m
Deal found 8/11![Southwest logo]()
$365
This Alaska Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/173:17 pm -
Nonstop4h 03m
Wed 10/288:42 am -
Nonstop3h 39m
Deal found 8/12![Alaska Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:35 pm -
2 stops11h 00m
Mon 10/128:40 pm -
1 stop12h 55m
Deal found 8/13![Southwest logo]()
$371
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:00 am -
2 stops8h 23m
Mon 10/512:16 pm -
2 stops9h 28m
Deal found 8/11![United Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:11 pm -
1 stop5h 48m
Sat 10/36:30 am -
2 stops13h 30m
Deal found 8/15![United Airlines logo]()
$432
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:29 pm -
1 stop7h 14m
Mon 9/146:52 pm -
2 stops13h 33m
Deal found 8/15![United Airlines logo]()
$432
Last-minute flights from Kansas City to SeattleDiscover last-minute flight deals from Kansas City to Seattle. Data last updated August 16, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Seattle. Data last updated August 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/221:38 pm -
1 stop21h 41m
Mon 8/311:35 pm -
2 stops43h 06m
Deal found 8/11![Frontier logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:38 pm -
1 stop21h 41m
Wed 9/28:48 pm -
2 stops14h 05m
Deal found 8/11![Frontier logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:38 pm -
1 stop21h 41m
Tue 9/12:37 pm -
2 stops18h 04m
Deal found 8/11![Frontier logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:34 pm -
Nonstop3h 55m
Thu 9/109:45 pm -
1 stop22h 00m
Deal found 8/15![Multiple Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
1 stop6h 01m
Sat 9/1212:05 pm -
2 stops9h 25m
Deal found 8/11![United Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am -
Nonstop3h 57m
Wed 9/99:45 pm -
1 stop22h 00m
Deal found 8/11![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:53 pm -
1 stop5h 58m
Sun 9/139:45 pm -
1 stop22h 00m
Deal found 8/15![Multiple Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:14 am -
2 stops9h 00m
Sat 9/195:00 am -
1 stop5h 37m
Deal found 8/15![United Airlines logo]()
$342
This Expedia deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:30 pm -
1 stop13h 12m
Wed 9/306:27 pm -
Nonstop3h 32m
Deal found 8/15![Multiple Airlines logo]()
$338
This Expedia deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:34 pm -
Nonstop3h 55m
Thu 9/244:27 pm -
1 stop25h 10m
Deal found 8/11![Multiple Airlines logo]()
$333
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:49 am -
1 stop7h 02m
Wed 9/3011:57 pm -
1 stop6h 41m
Deal found 8/14![American Airlines logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:00 am -
Nonstop3h 57m
Sat 10/38:40 am -
1 stop6h 38m
Deal found 8/14![Alaska Airlines logo]()
$341
One-way flights from Kansas City to SeattleSearch for one-way flight options from Kansas City to Seattle. Find affordable one-way fares based on user searches. Data last updated August 16, 2026.
Search for one-way flight options from Kansas City to Seattle. Find affordable one-way fares based on user searches. Data last updated August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:32 pm -
1 stop20h 36m
Deal found 8/13![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:32 pm -
1 stop20h 36m
Deal found 8/13![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:32 pm -
1 stop20h 36m
Deal found 8/12![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:17 pm -
1 stop21h 34m
Deal found 8/11![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:17 pm -
1 stop21h 34m
Deal found 8/13![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:17 pm -
1 stop21h 34m
Deal found 8/13![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:32 pm -
1 stop20h 36m
Deal found 8/14![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:32 pm -
1 stop20h 36m
Deal found 8/11![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:17 pm -
1 stop21h 34m
Deal found 8/13![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:17 pm -
1 stop21h 34m
Deal found 8/13![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:17 pm -
1 stop21h 34m
Deal found 8/11![Frontier logo]()
$79
Find flight deals from Kansas City to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $331 (Kiwi.com) |
One-way from | $60 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $397 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2026.
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
Cheapest round-trip
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Fri 9/11
2:53 pm-6:51 pm
1 stop5h 58m
Seattle/Tacoma Intl
Tue 9/15
6:27 pm-11:59 pm
Nonstop3h 32m
$341
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Tue 10/13
7:15 am-1:35 pm
2 stops8h 20m
Seattle/Tacoma Intl
Sat 10/17
11:05 am-8:40 pm
1 stop7h 35m
$342
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Mon 1/25
7:20 am-4:10 pm
2 stops10h 50m
Seattle/Tacoma Intl
Sun 1/31
9:15 am-6:25 pm
1 stop7h 10m
$365
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Fri 10/9
3:35 pm-12:35 am
2 stops11h 00m
Seattle/Tacoma Intl
Mon 10/12
8:40 pm-11:35 am
1 stop12h 55m
$371
Quickest round-trip
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Sat 10/17
3:17 pm-5:20 pm
Nonstop4h 03m
Seattle/Tacoma Intl
Wed 10/28
8:42 am-2:21 pm
Nonstop3h 39m
$377
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Thu 10/22
7:11 pm-10:59 pm
1 stop5h 48m
Seattle/Tacoma Intl
Fri 10/23
6:43 pm-9:07 am
2 stops12h 24m
$417
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Thu 10/8
7:16 am-2:50 pm
1 stop9h 34m
Seattle/Tacoma Intl
Sun 10/11
11:10 pm-9:47 am
1 stop8h 37m
$417
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Wed 9/30
6:00 am-12:23 pm
2 stops8h 23m
Seattle/Tacoma Intl
Mon 10/5
12:16 pm-11:44 pm
2 stops9h 28m
$424
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Mon 9/28
7:11 pm-10:59 pm
1 stop5h 48m
Seattle/Tacoma Intl
Sat 10/3
6:30 am-10:00 pm
2 stops13h 30m
$432
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Thu 9/10
3:29 pm-8:43 pm
1 stop7h 14m
Seattle/Tacoma Intl
Mon 9/14
6:52 pm-10:25 am
2 stops13h 33m
$432
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Kansas City to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Seattle in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Kansas City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kansas City-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Kansas City to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Kansas City with our price prediction graph.
MCI-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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Everything you need to know about your flight from Kansas City to Seattle
Prices
Airlines
How far ahead should I book a flight from Kansas City to Seattle?
The price you pay for your flight from Kansas City to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 23 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Kansas City to Seattle?
Currently, February is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $228). Flying from Kansas City to Seattle in July is currently the most expensive (average of $498). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from MCI to SEA?
Find hourly flight availability from Kansas City to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 16, 2026.
It’s optimal to fly from Kansas City to Seattle in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Kansas City to Seattle?
Use this chart to determine the cheapest time to fly round-trip from Kansas City to Seattle. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Kansas City to Seattle flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The best insider tips for Kansas City to Seattle flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Kansas City to Seattle trip
Our travel experts
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 16, 2026.
Read through reviews of airlines operating flights from Kansas City to Seattle, such as Southwest,Alaska Airlines, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Kansas City to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Marysville
Kent
Ellensburg
Fife
Ocean Shores
Lakewood
Poulsbo
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Alternative routes for Kansas City to Seattle
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Complete your trip
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Search flights from Kansas City to Seattle by cabin class
Find flights from Kansas City to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Kansas City and Seattle flights
Browse other Kansas City and Seattle flight options. Last updated on August 16, 2026.
Popular flight searches
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Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 16, 2026.
Top 7 airlines flying from Kansas City to Seattle
Discover the top 7 airlines that operate flights from Kansas City to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$273 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$327 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$152 | Average$422 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$386 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$199 | Average$420 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$216 | Average$408 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$337 | Average$487 | FlexibilityNo cancel fee | On-time71% |