$64+ Cheap flights from Seattle (SEA) to Missouri
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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Sep 1 — Sep 81
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Missouri with Cheapflights
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Cheapest flights from Seattle to MissouriExplore the most affordable flight options available from Seattle to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.
Explore the most affordable flight options available from Seattle to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/279:29 pm
SEA
- SGF
1 stop20h 17m
Multiple Airlines
Mon 8/319:17 pm
SGF
- SEA
1 stop15h 22m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 7/28. 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 9/2512:05 pm
SEA
- STL
Nonstop4h 00m
Southwest
Sun 9/2710:55 am
STL
- SEA
Nonstop4h 20m
Southwest
Deal found 7/28![Southwest logo]()
$297
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:53 pm
SEA
- STL
1 stop18h 57m
Frontier
Tue 9/16:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 7/28![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/272:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Tue 9/1512:17 pm
STL
- SEA
1 stop23h 25m
Frontier
Deal found 7/31![Frontier logo]()
$299
This Delta deal was found by Cheapflights users on 7/28. 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.
Fri 11/1311:47 pm
SEA
- STL
1 stop8h 52m
Delta
Thu 12/37:10 am
STL
- SEA
1 stop9h 34m
Delta
Deal found 7/28![Delta logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/207:06 pm
SEA
- STL
2 stops20h 16m
Frontier
Sun 8/237:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/30![Frontier logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/192:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Thu 8/277:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/192:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Mon 8/317:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Wed 11/49:16 pm
SEA
- STL
2 stops19h 59m
Frontier
Wed 11/115:32 pm
STL
- SEA
1 stop18h 28m
Frontier
Deal found 8/1![Frontier logo]()
$306
This Southwest deal was found by Cheapflights users on 7/29. 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 8/2811:05 pm
SEA
- STL
1 stop6h 40m
Southwest
Sun 9/611:55 am
STL
- SEA
Nonstop4h 20m
Southwest
Deal found 7/29![Southwest logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/202:37 pm
SEA
- STL
2 stops22h 51m
Frontier
Mon 8/317:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/307:06 pm
SEA
- STL
2 stops20h 16m
Frontier
Sun 9/67:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/31![Frontier logo]()
$309
Best flights from Seattle to MissouriDiscover carefully curated flight deals from Seattle to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2026.
Discover carefully curated flight deals from Seattle to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 2, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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 9/2512:05 pm
SEA
- STL
Nonstop4h 00m
Southwest
Sun 9/2710:55 am
STL
- SEA
Nonstop4h 20m
Southwest
Deal found 7/28![Southwest logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 9/56:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Sat 9/121:34 pm
MCI
- SEA
Nonstop3h 55m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 8/1. 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 11/55:55 pm
SEA
- MCI
Nonstop3h 36m
Delta
Mon 11/97:00 am
MCI
- SEA
Nonstop4h 11m
Delta
Deal found 8/1![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/1. 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 10/511:13 pm
SEA
- COU
1 stop9h 26m
United Airlines
Thu 10/1511:15 am
COU
- SEA
1 stop9h 37m
United Airlines
Deal found 8/1![United Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/209:29 pm
SEA
- STL
1 stop18h 21m
Multiple Airlines
Sun 8/236:35 am
STL
- SEA
Nonstop4h 27m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$417
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 8/296:50 am
SEA
- STL
2 stops8h 00m
Southwest
Tue 9/156:30 pm
STL
- SEA
1 stop6h 40m
Southwest
Deal found 7/31![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 8/1. 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.
Thu 11/58:17 am
SEA
- MCI
Nonstop3h 42m
Alaska Airlines
Mon 11/96:09 pm
MCI
- SEA
1 stop6h 25m
Alaska Airlines
Deal found 8/1![Alaska Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/65:00 am
SEA
- MCI
2 stops9h 07m
United Airlines
Sat 9/126:00 am
MCI
- SEA
1 stop6h 01m
United Airlines
Deal found 8/1![United Airlines logo]()
$356
This Delta deal was found by Cheapflights users on 7/30. 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 10/155:55 pm
SEA
- MCI
Nonstop3h 36m
Delta
Tue 10/207:00 am
MCI
- SEA
Nonstop4h 04m
Delta
Deal found 7/30![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 7/28. 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.
Wed 9/237:10 am
SEA
- MCI
2 stops8h 15m
Southwest
Thu 9/245:30 pm
MCI
- SEA
1 stop8h 25m
Southwest
Deal found 7/28![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 8/1. 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 9/2811:59 pm
SEA
- STL
1 stop8h 11m
United Airlines
Tue 9/295:36 pm
STL
- SEA
1 stop7h 20m
United Airlines
Deal found 8/1![United Airlines logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 9/238:13 am
SEA
- STL
Nonstop4h 08m
Alaska Airlines
Mon 9/287:36 pm
STL
- SEA
Nonstop4h 23m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 7/31. 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 9/2111:00 pm
SEA
- STL
1 stop6h 55m
Southwest
Fri 9/258:25 am
STL
- SEA
Nonstop4h 20m
Southwest
Deal found 7/31![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 10/1211:59 pm
SEA
- SGF
1 stop8h 54m
Delta
Wed 10/213:25 pm
SGF
- SEA
1 stop10h 27m
Delta
Deal found 7/29![Delta logo]()
$378
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/212:42 pm
SEA
- STL
Nonstop3h 56m
Alaska Airlines
Sun 9/66:35 am
STL
- SEA
Nonstop4h 27m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/1611:59 pm
SEA
- STL
1 stop8h 11m
United Airlines
Tue 9/221:36 pm
STL
- SEA
2 stops9h 07m
United Airlines
Deal found 7/29![United Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 10/1210:35 pm
SEA
- SGF
1 stop10h 18m
Delta
Thu 10/223:25 pm
SGF
- SEA
1 stop8h 38m
Delta
Deal found 7/29![Delta logo]()
$378
This Southwest deal was found by Cheapflights users on 7/28. 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.
Thu 12/35:45 am
SEA
- MCI
2 stops8h 50m
Southwest
Mon 12/72:25 pm
MCI
- SEA
2 stops8h 45m
Southwest
Deal found 7/28![Southwest logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 9/176:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Sun 9/202:53 pm
MCI
- SEA
1 stop5h 58m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 7/29. 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 10/3011:10 am
SEA
- MCI
2 stops8h 10m
Southwest
Mon 11/210:45 am
MCI
- SEA
1 stop10h 30m
Southwest
Deal found 7/29![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 8/2. 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.
Fri 8/2811:56 am
SEA
- SGF
1 stop8h 25m
Delta
Mon 8/314:30 pm
SGF
- SEA
1 stop9h 27m
Delta
Deal found 8/2![Delta logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Sun 9/136:03 pm
SEA
- STL
Nonstop3h 56m
Alaska Airlines
Sat 9/266:08 pm
STL
- SEA
1 stop6h 31m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/1912:44 pm
SEA
- SGF
1 stop6h 03m
United Airlines
Wed 8/261:37 pm
SGF
- SEA
2 stops9h 06m
United Airlines
Deal found 7/29![United Airlines logo]()
$435
This Southwest deal was found by Cheapflights users on 7/31. 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.
Sat 9/56:00 am
SEA
- MCI
2 stops7h 10m
Southwest
Sat 9/1212:20 pm
MCI
- SEA
2 stops8h 40m
Southwest
Deal found 7/31![Southwest logo]()
$375
This Booking.com deal was found by Cheapflights users on 7/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:51 pm
SEA
- UIN
1 stop16h 49m
Multiple Airlines
Sat 8/293:25 pm
UIN
- SEA
1 stop19h 05m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$604
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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.
Thu 10/226:03 pm
SEA
- STL
Nonstop3h 56m
Alaska Airlines
Sun 10/257:02 am
STL
- SEA
Nonstop4h 33m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/232:34 pm
SEA
- JLN
1 stop7h 10m
United Airlines
Mon 9/281:30 pm
JLN
- SEA
1 stop6h 07m
United Airlines
Deal found 7/30![United Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 7/28. 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 9/115:00 am
SEA
- MCI
2 stops12h 30m
Southwest
Mon 9/146:20 am
MCI
- SEA
2 stops8h 30m
Southwest
Deal found 7/28![Southwest logo]()
$388
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/511:00 pm
SEA
- COU
1 stop9h 16m
United Airlines
Wed 9/911:20 am
COU
- SEA
1 stop9h 55m
United Airlines
Deal found 7/31![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 11/37:35 pm
SEA
- JLN
2 stops15h 02m
United Airlines
Sat 11/77:00 am
JLN
- SEA
1 stop10h 32m
United Airlines
Deal found 8/1![United Airlines logo]()
$464
Last-minute flights from Seattle to MissouriDiscover last-minute flight deals from Seattle to Missouri. Data last updated August 2, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Missouri. Data last updated August 2, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/137:06 pm
SEA
- STL
1 stop22h 17m
Frontier
Thu 8/207:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/29![Frontier logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/158:13 pm
SEA
- STL
1 stop20h 02m
Frontier
Mon 8/247:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/31![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/192:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Thu 8/277:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 8/192:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Mon 8/317:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/207:06 pm
SEA
- STL
2 stops20h 16m
Frontier
Sun 8/237:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/30![Frontier logo]()
$303
This Trip.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/202:37 pm
SEA
- STL
1 stop26h 36m
Frontier
Tue 8/256:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 7/28![Frontier logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/202:37 pm
SEA
- STL
2 stops22h 51m
Frontier
Mon 8/317:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/239:29 pm
SEA
- STL
2 stops17h 53m
Frontier
Mon 8/247:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/28![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/279:29 pm
SEA
- SGF
1 stop20h 17m
Multiple Airlines
Mon 8/319:17 pm
SGF
- SEA
1 stop15h 22m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/272:37 pm
SEA
- STL
2 stops24h 45m
Frontier
Tue 9/1512:17 pm
STL
- SEA
1 stop23h 25m
Frontier
Deal found 7/31![Frontier logo]()
$299
This Southwest deal was found by Cheapflights users on 7/29. 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 8/2811:05 pm
SEA
- STL
1 stop6h 40m
Southwest
Sun 9/611:55 am
STL
- SEA
Nonstop4h 20m
Southwest
Deal found 7/29![Southwest logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/307:06 pm
SEA
- STL
2 stops20h 16m
Frontier
Sun 9/67:58 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 7/31![Frontier logo]()
$309
One-way flights from Seattle to MissouriSearch for one-way flight options from Seattle to Missouri. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
Search for one-way flight options from Seattle to Missouri. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sat 11/711:45 am
SEA
- STL
1 stop6h 15m
Southwest
Deal found 7/28![Southwest logo]()
$64
This Southwest deal was found by Cheapflights users on 7/30. 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 9/111:05 pm
SEA
- STL
1 stop8h 30m
Southwest
Deal found 7/30![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 8/295:00 am
SEA
- STL
1 stop13h 20m
Southwest
Deal found 7/30![Southwest logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 11/107:41 pm
SEA
- MCI
1 stop15h 41m
Frontier
Deal found 7/31![Frontier logo]()
$80
This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 10/2611:50 pm
SEA
- STL
1 stop7h 03m
Delta
Deal found 7/29![Delta logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Wed 8/267:06 pm
SEA
- MCI
1 stop15h 47m
Frontier
Deal found 7/31![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/297:06 pm
SEA
- MCI
1 stop15h 47m
Frontier
Deal found 7/29![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 8/287:06 pm
SEA
- MCI
1 stop15h 47m
Frontier
Deal found 7/30![Frontier logo]()
$94
This Southwest deal was found by Cheapflights users on 7/30. 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.
Thu 10/2911:10 am
SEA
- STL
2 stops8h 35m
Southwest
Deal found 7/30![Southwest logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 10/137:41 pm
SEA
- MCI
1 stop15h 41m
Frontier
Deal found 7/30![Frontier logo]()
$97
This Trip.com deal was found by Cheapflights users on 7/28. 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 10/127:41 pm
SEA
- MCI
1 stop15h 41m
Frontier
Deal found 7/28![Frontier logo]()
$99
This Southwest deal was found by Cheapflights users on 8/1. 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.
Thu 9/1012:50 pm
SEA
- STL
2 stops9h 50m
Southwest
Deal found 8/1![Southwest logo]()
$99
Find flight deals from Seattle to Missouri
Keep the following information in mind while searching for Seattle to Missouri flight deals. Data was last updated August 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (Southwest) |
One-way from | $64 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $436 |
Good round-trip deal | $366 or less |
Good one-way deal | $243 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Missouri 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 2, 2026.
Use the filters below to find and compare flights from Seattle to Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Fri 9/25
12:05 pm-6:05 pm
Nonstop4h 00m
Lambert-St Louis
Sun 9/27
10:55 am-1:15 pm
Nonstop4h 20m
$297
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Sat 8/29
6:50 am-4:50 pm
2 stops8h 00m
Lambert-St Louis
Tue 9/15
6:30 pm-11:10 pm
1 stop6h 40m
$322
Quickest round-trip
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Sat 9/5
6:27 pm-11:59 pm
Nonstop3h 32m
Kansas City
Sat 9/12
1:34 pm-3:29 pm
Nonstop3h 55m
$331
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Wed 9/23
7:10 am-5:25 pm
2 stops8h 15m
Kansas City
Thu 9/24
5:30 pm-11:55 pm
1 stop8h 25m
$342
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Mon 9/21
11:00 pm-7:55 am
1 stop6h 55m
Lambert-St Louis
Fri 9/25
8:25 am-10:45 am
Nonstop4h 20m
$342
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Thu 11/5
5:55 pm-11:31 pm
Nonstop3h 36m
Kansas City
Mon 11/9
7:00 am-9:11 am
Nonstop4h 11m
$345
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Thu 12/3
5:45 am-4:35 pm
2 stops8h 50m
Kansas City
Mon 12/7
2:25 pm-9:10 pm
2 stops8h 45m
$347
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Fri 10/30
11:10 am-9:20 pm
2 stops8h 10m
Kansas City
Mon 11/2
10:45 am-7:15 pm
1 stop10h 30m
$347
SeattleColumbia
SEA - COU
SEACOU
Seattle/Tacoma Intl
Mon 10/5
11:13 pm-10:39 am
1 stop9h 26m
Columbia Regional
Thu 10/15
11:15 am-6:52 pm
1 stop9h 37m
$348
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Thu 11/5
8:17 am-1:59 pm
Nonstop3h 42m
Kansas City
Mon 11/9
6:09 pm-10:34 pm
1 stop6h 25m
$355
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Seattle to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Seattle with our price prediction graph.
SEA-SGF
SEA-STL
SEA-MCI
SEA-COU
SEA-UIN
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.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Missouri
SEA-USMO
SEA-SGF
SEA-STL
SEA-MCI
SEA-COU
What is the cheapest month to book a flight from Seattle to Missouri?
Currently, January is the cheapest month in which you can book a flight from Seattle to Missouri (average of $278). Flying from Seattle to Missouri in July is currently the most expensive (average of $518). 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 SEA to MO?
Find hourly flight availability from Seattle to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 2, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Missouri as you normally would.
Weekly flight availability from Seattle to Missouri
Explore weekly flight availability from Seattle to Missouri. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 2, 2026.
The most flights from SEA to USMO are scheduled on a Friday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Seattle to Missouri?
Airfare is typical for this route at the moment.
Seattle to Missouri flights typically cost between $294 and $568 in August.The cheapest round-trip price found within the last 5 days was $299 on Frontier (Aug 27-Sep 15).
How far ahead should I book a flight from Seattle to Missouri?
Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Missouri. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Missouri
Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated August 2, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Seattle to Missouri have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Missouri by cabin class
Find flights from Seattle to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Missouri flights
Browse other Seattle and Missouri flight options. Last updated on August 2, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Seattle to Missouri flights
Consider these flights traveling from Seattle to Missouri.
Top 7 airlines flying from Seattle to Missouri
Discover the top 7 airlines that operate flights from Seattle to Missouri. 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 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$334 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$270 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$365 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$427 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$415 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$537 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$468 | FlexibilityNo cancel fee | On-time75% |