$82+ Cheap flights from Washington 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Cheapest flights from Washington to MissouriExplore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
Explore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/227:12 pm
SEA
- MCI
1 stop16h 18m
Frontier
Mon 4/272:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/19![Frontier logo]()
$197
This Delta deal was found by Cheapflights users on 3/18. 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 4/236:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Mon 4/277:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/18![Delta logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 5/44:20 pm
SEA
- MCI
1 stop19h 29m
Frontier
Mon 5/112:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 3/20![Frontier logo]()
$204
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 4/225:35 am
SEA
- MCI
1 stop5h 45m
Delta
Mon 4/277:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/18![Delta logo]()
$209
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Fri 4/247:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Mon 4/272:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/23![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Thu 4/3011:58 am
PDX
- MCI
1 stop23h 32m
Frontier
Wed 5/62:34 pm
MCI
- PDX
1 stop28h 12m
Frontier
Deal found 3/20![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Thu 4/2311:48 am
PDX
- STL
1 stop5h 33m
Frontier
Mon 4/278:17 pm
STL
- PDX
1 stop17h 35m
Frontier
Deal found 3/20![Frontier logo]()
$216
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/2011:59 pm
SEA
- MCI
1 stop6h 53m
United Airlines
Fri 4/247:00 pm
MCI
- SEA
1 stop7h 34m
United Airlines
Deal found 3/19![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/18. 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 4/216:30 am
SEA
- MCI
1 stop5h 05m
Southwest
Sat 4/2510:45 am
MCI
- SEA
2 stops9h 30m
Southwest
Deal found 3/18![Southwest logo]()
$224
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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 4/226:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Sat 4/257:00 am
MCI
- SEA
Nonstop4h 03m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$229
This Southwest deal was found by Cheapflights users on 3/19. 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 4/207:20 am
SEA
- MCI
2 stops13h 30m
Southwest
Fri 4/247:05 pm
MCI
- SEA
1 stop7h 00m
Southwest
Deal found 3/19![Southwest logo]()
$230
This Southwest deal was found by Cheapflights users on 3/19. 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 4/142:20 pm
SEA
- MCI
1 stop6h 05m
Southwest
Sat 4/253:15 pm
MCI
- SEA
2 stops8h 55m
Southwest
Deal found 3/19![Southwest logo]()
$234
Best flights from Washington to MissouriDiscover carefully curated flight deals from Washington to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from Washington to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/296:00 am
SEA
- MCI
1 stop6h 52m
United Airlines
Sun 5/36:56 pm
MCI
- SEA
1 stop7h 03m
United Airlines
Deal found 3/18![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/19. 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 4/2211:45 pm
SEA
- MCI
1 stop7h 35m
Southwest
Fri 4/247:05 pm
MCI
- SEA
1 stop7h 00m
Southwest
Deal found 3/19![Southwest logo]()
$219
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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 5/610:45 am
PDX
- MCI
Nonstop3h 32m
Alaska Airlines
Wed 5/135:52 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 3/18. 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 4/95:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Wed 4/157:06 am
MCI
- SEA
1 stop7h 31m
Delta
Deal found 3/18![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 3/18. 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 5/1611:55 pm
PDX
- STL
1 stop7h 35m
Southwest
Wed 5/201:45 pm
STL
- PDX
1 stop11h 25m
Southwest
Deal found 3/18![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/1611:59 pm
PDX
- STL
1 stop6h 26m
United Airlines
Sat 4/184:49 pm
STL
- PDX
1 stop8h 09m
United Airlines
Deal found 3/19![United Airlines logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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 5/210:45 am
PDX
- MCI
Nonstop3h 32m
Alaska Airlines
Wed 5/65:11 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 3/20. 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 5/213:10 pm
PDX
- STL
1 stop6h 11m
Delta
Wed 5/277:59 pm
STL
- PDX
1 stop5h 45m
Delta
Deal found 3/20![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 3/20. 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 7/286:15 am
SEA
- STL
2 stops10h 10m
Southwest
Wed 8/125:35 am
STL
- SEA
1 stop6h 55m
Southwest
Deal found 3/20![Southwest logo]()
$299
This Alaska Airlines deal was found by Cheapflights users on 3/19. 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.
Tue 4/2810:45 am
PDX
- MCI
Nonstop3h 32m
Alaska Airlines
Wed 4/292:58 pm
MCI
- PDX
1 stop6h 36m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/18. 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 6/310:40 pm
PDX
- STL
1 stop8h 01m
United Airlines
Wed 6/105:10 am
STL
- PDX
1 stop6h 37m
United Airlines
Deal found 3/18![United Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 4/227:32 pm
PDX
- MCI
2 stops12h 17m
Delta
Tue 4/287:42 am
MCI
- PDX
1 stop9h 11m
Delta
Deal found 3/18![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 3/21. 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 5/112:50 pm
PDX
- STL
1 stop7h 00m
Southwest
Fri 5/156:00 pm
STL
- PDX
1 stop8h 55m
Southwest
Deal found 3/21![Southwest logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/284:15 pm
PDX
- MCI
1 stop5h 17m
United Airlines
Tue 5/56:15 am
MCI
- PDX
1 stop8h 28m
United Airlines
Deal found 3/19![United Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 4/2910:42 am
PDX
- MCI
2 stops11h 15m
Delta
Tue 5/57:06 am
MCI
- PDX
2 stops12h 04m
Delta
Deal found 3/18![Delta logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 3/20. 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 4/113:33 pm
GEG
- MCI
1 stop6h 26m
Alaska Airlines
Sat 4/182:23 pm
MCI
- GEG
1 stop6h 38m
Alaska Airlines
Deal found 3/20![Alaska Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Fri 4/2411:59 pm
SEA
- MCI
1 stop8h 28m
United Airlines
Tue 4/2811:28 am
MCI
- SEA
2 stops11h 29m
United Airlines
Deal found 3/19![United Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 3/20. 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 5/61:35 pm
PDX
- MCI
1 stop7h 00m
Southwest
Tue 5/122:55 pm
MCI
- PDX
1 stop5h 35m
Southwest
Deal found 3/20![Southwest logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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.
Tue 4/281:52 pm
PDX
- STL
1 stop8h 07m
Alaska Airlines
Sat 5/27:00 am
STL
- PDX
1 stop7h 52m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 3/20. 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.
Wed 4/296:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Sun 5/37:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/20![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 3/21. 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 5/111:55 pm
PDX
- STL
1 stop8h 35m
Southwest
Mon 5/45:45 am
STL
- PDX
2 stops12h 35m
Southwest
Deal found 3/21![Southwest logo]()
$320
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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 4/176:00 am
GEG
- MCI
1 stop15h 59m
Alaska Airlines
Sun 4/196:15 am
MCI
- GEG
1 stop17h 09m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 3/21. 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.
Wed 4/85:30 am
SEA
- STL
1 stop5h 47m
Delta
Mon 4/132:20 pm
STL
- SEA
1 stop6h 10m
Delta
Deal found 3/21![Delta logo]()
$343
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/611:59 pm
SEA
- MCI
1 stop6h 53m
United Airlines
Wed 4/81:05 pm
MCI
- SEA
1 stop7h 55m
United Airlines
Deal found 3/18![United Airlines logo]()
$354
This Southwest deal was found by Cheapflights users on 3/20. 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 4/185:45 am
GEG
- STL
2 stops10h 25m
Southwest
Sat 4/257:00 am
STL
- GEG
1 stop7h 25m
Southwest
Deal found 3/20![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 5/211:10 am
SEA
- MCI
1 stop7h 46m
Delta
Wed 5/67:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/22![Delta logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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.
Tue 4/141:35 pm
PDX
- STL
1 stop8h 24m
Alaska Airlines
Wed 4/157:00 am
STL
- PDX
1 stop7h 35m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$348
This United Airlines deal was found by Cheapflights users on 3/22. 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 4/296:00 am
SEA
- STL
2 stops12h 54m
United Airlines
Sat 5/27:45 am
STL
- SEA
2 stops12h 45m
United Airlines
Deal found 3/22![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 3/19. 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 4/1711:55 pm
PDX
- MCI
1 stop7h 30m
Southwest
Fri 4/248:20 pm
MCI
- PDX
1 stop6h 35m
Southwest
Deal found 3/19![Southwest logo]()
$327
This Southwest deal was found by Cheapflights users on 3/18. 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 4/1711:55 pm
PDX
- STL
1 stop8h 35m
Southwest
Wed 4/225:30 am
STL
- PDX
2 stops10h 20m
Southwest
Deal found 3/18![Southwest logo]()
$327
Last-minute flights from Washington to MissouriDiscover last-minute flight deals from Washington to Missouri. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Missouri. Data last updated March 23, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Fri 3/2710:08 pm
SEA
- MCI
1 stop13h 28m
Frontier
Fri 4/38:43 pm
MCI
- SEA
1 stop16h 54m
Frontier
Deal found 3/20![Frontier logo]()
$236
This Southwest deal was found by Cheapflights users on 3/19. 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 4/142:20 pm
SEA
- MCI
1 stop6h 05m
Southwest
Sat 4/253:15 pm
MCI
- SEA
2 stops8h 55m
Southwest
Deal found 3/19![Southwest logo]()
$234
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/2011:59 pm
SEA
- MCI
1 stop6h 53m
United Airlines
Fri 4/247:00 pm
MCI
- SEA
1 stop7h 34m
United Airlines
Deal found 3/19![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/19. 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 4/207:20 am
SEA
- MCI
2 stops13h 30m
Southwest
Fri 4/247:05 pm
MCI
- SEA
1 stop7h 00m
Southwest
Deal found 3/19![Southwest logo]()
$230
This Southwest deal was found by Cheapflights users on 3/18. 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 4/216:30 am
SEA
- MCI
1 stop5h 05m
Southwest
Sat 4/2510:45 am
MCI
- SEA
2 stops9h 30m
Southwest
Deal found 3/18![Southwest logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/227:12 pm
SEA
- MCI
1 stop16h 18m
Frontier
Mon 4/272:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/19![Frontier logo]()
$197
This Delta deal was found by Cheapflights users on 3/18. 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.
Wed 4/225:35 am
SEA
- MCI
1 stop5h 45m
Delta
Mon 4/277:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/18![Delta logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 3/18. 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 4/226:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Sat 4/257:00 am
MCI
- SEA
Nonstop4h 03m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 3/18. 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 4/236:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Mon 4/277:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/18![Delta logo]()
$199
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Thu 4/2311:48 am
PDX
- STL
1 stop5h 33m
Frontier
Mon 4/278:17 pm
STL
- PDX
1 stop17h 35m
Frontier
Deal found 3/23![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 3/23. 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.
Fri 4/247:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Mon 4/272:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/23![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Thu 4/3011:58 am
PDX
- MCI
1 stop23h 32m
Frontier
Wed 5/62:34 pm
MCI
- PDX
1 stop28h 12m
Frontier
Deal found 3/20![Frontier logo]()
$216
One-way flights from Washington to MissouriSearch for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/177:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Deal found 3/18![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/177:12 pm
SEA
- STL
1 stop22h 20m
Frontier
Deal found 3/18![Frontier logo]()
$82
This Southwest deal was found by Cheapflights users on 3/22. 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 4/2111:45 pm
SEA
- STL
1 stop7h 45m
Southwest
Deal found 3/22![Southwest logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/197:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
Deal found 3/19![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/247:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Deal found 3/20![Frontier logo]()
$89
This CheapOair deal was found by Cheapflights users on 3/20. 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 5/57:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
Deal found 3/20![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 3/22. 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.
Wed 4/158:07 pm
SEA
- STL
1 stop21h 14m
Frontier
Deal found 3/22![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Fri 4/1711:48 am
PDX
- MCI
1 stop24h 18m
Frontier
Deal found 3/20![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Mon 5/188:46 pm
PDX
- STL
1 stop19h 20m
Frontier
Deal found 3/20![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 5/17:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Deal found 3/18![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 5/157:50 pm
SEA
- STL
1 stop21h 33m
Frontier
Deal found 3/18![Frontier logo]()
$100
This Southwest deal was found by Cheapflights users on 3/23. 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 5/2611:55 pm
PDX
- STL
1 stop7h 35m
Southwest
Deal found 3/23![Southwest logo]()
$103
Find flight deals from Washington to Missouri
Keep the following information in mind while searching for Washington to Missouri flight deals. Data was last updated March 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $197 (Kiwi.com) |
One-way from | $82 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $431 |
Good round-trip deal | $237 or less |
Good one-way deal | $168 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 March 23, 2026.
Use the filters below to find and compare flights from Washington to Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Wed 4/29
6:00 am-2:52 pm
1 stop6h 52m
Kansas City
Sun 5/3
6:56 pm-11:59 pm
1 stop7h 03m
$219
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Wed 4/22
11:45 pm-9:20 am
1 stop7h 35m
Kansas City
Fri 4/24
7:05 pm-12:05 am
1 stop7h 00m
$219
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Sat 5/16
11:55 pm-9:30 am
1 stop7h 35m
Lambert-St Louis
Wed 5/20
1:45 pm-11:10 pm
1 stop11h 25m
$282
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 4/16
11:59 pm-8:25 am
1 stop6h 26m
Lambert-St Louis
Sat 4/18
4:49 pm-10:58 pm
1 stop8h 09m
$293
Quickest round-trip
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Wed 5/6
10:45 am-4:17 pm
Nonstop3h 32m
Kansas City
Wed 5/13
5:52 pm-7:44 pm
Nonstop3h 52m
$297
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sat 5/2
10:45 am-4:17 pm
Nonstop3h 32m
Kansas City
Wed 5/6
5:11 pm-7:03 pm
Nonstop3h 52m
$297
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 7/28
6:15 am-6:25 pm
2 stops10h 10m
Lambert-St Louis
Wed 8/12
5:35 am-10:30 am
1 stop6h 55m
$299
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Tue 4/28
10:45 am-4:17 pm
Nonstop3h 32m
Kansas City
Wed 4/29
2:58 pm-7:34 pm
1 stop6h 36m
$307
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Thu 4/9
5:50 pm-11:16 pm
Nonstop3h 26m
Kansas City
Wed 4/15
7:06 am-12:37 pm
1 stop7h 31m
$308
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 5/21
3:10 pm-11:21 pm
1 stop6h 11m
Lambert-St Louis
Wed 5/27
7:59 pm-11:44 pm
1 stop5h 45m
$309
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Washington with our price prediction graph.
SEA-MCI
PDX-MCI
PDX-STL
SEA-STL
GEG-STL
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 Washington to Missouri
USWA-USMO
SEA-MCI
PDX-MCI
PDX-STL
SEA-STL
What is the cheapest month to book a flight from State of Washington to Missouri?
Currently, March is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $135). Flying from State of Washington to Missouri in February is currently the most expensive (average of $207). 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 WA to MO?
Find hourly flight availability from Washington 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 March 23, 2026.
When flying from State of Washington to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from State of Washington to Missouri
Explore weekly flight availability from Washington 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 March 23, 2026.
The most flights from USWA to USMO are scheduled on a Friday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).
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 March 23, 2026.
Read through reviews of airlines operating flights from Washington to Missouri, such as Southwest,Alaska Airlines, andDelta. 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.
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Washington 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 Washington 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 Washington to Missouri by cabin class
Find flights from Washington to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Missouri flights
Browse other Washington and Missouri flight options. Last updated on March 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Missouri
Find the right flight back to Washington after your stay in Missouri
Washington to Missouri flights
Consider these flights traveling from Washington to Missouri.
Top 8 airlines flying from Washington to Missouri
Discover the top 8 airlines that operate flights from Washington 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 March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$357 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$246 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$383 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$445 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$168 | Average$251 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$178 | Average$382 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$488 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$449 | FlexibilityNo cancel fee | On-time75% |