$64+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Aug 29 — Sep 51
Round-trip
1 adult, Economy
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1. Tell us where you want to go
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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 July 30, 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 July 30, 2026.
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 9/512:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Sun 9/138:32 pm
MCI
- PDX
1 stop17h 11m
Frontier
Deal found 7/29![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/25:56 pm
PDX
- MCI
1 stop16h 57m
Frontier
Mon 9/71:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/27![Frontier logo]()
$224
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.
Wed 9/25:56 pm
PDX
- STL
1 stop23h 17m
Frontier
Wed 9/98:10 pm
STL
- PDX
1 stop17h 33m
Frontier
Deal found 7/29![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/2812:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Mon 8/311:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/27![Frontier logo]()
$237
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:39 pm
PDX
- STL
1 stop20h 53m
Frontier
Sun 9/131:02 pm
STL
- PDX
1 stop24h 41m
Frontier
Deal found 7/29![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 10/912:34 pm
PDX
- MCI
1 stop22h 48m
Frontier
Sat 10/172:17 pm
MCI
- PDX
1 stop28h 18m
Frontier
Deal found 7/27![Frontier logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/265:56 pm
PDX
- STL
1 stop23h 17m
Frontier
Mon 8/317:58 pm
STL
- PDX
1 stop23h 13m
Frontier
Deal found 7/27![Frontier logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/412:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Thu 9/108:32 pm
MCI
- PDX
1 stop17h 11m
Frontier
Deal found 7/27![Frontier logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 11/23:47 pm
PDX
- MCI
1 stop19h 35m
Frontier
Thu 11/52:17 pm
MCI
- PDX
1 stop28h 18m
Frontier
Deal found 7/27![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 9/412:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Mon 9/71:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/25![Frontier logo]()
$265
This CheapOair deal was found by Cheapflights users on 7/26. 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 9/2112:39 pm
PDX
- STL
1 stop20h 53m
Frontier
Fri 9/2512:17 pm
STL
- PDX
1 stop25h 19m
Frontier
Deal found 7/26![Frontier logo]()
$265
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.
Thu 8/271:47 pm
PDX
- STL
1 stop26h 03m
Frontier
Thu 9/36:45 pm
STL
- PDX
1 stop24h 36m
Frontier
Deal found 7/28![Frontier logo]()
$268
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 July 30, 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 July 30, 2026.
This Southwest deal was found by Cheapflights users on 7/25. 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 8/226:15 am
GEG
- MCI
1 stop6h 15m
Southwest
Sat 8/295:40 am
MCI
- GEG
1 stop8h 25m
Southwest
Deal found 7/25![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 7/27. 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.
Sun 11/13:31 pm
PDX
- MCI
1 stop6h 00m
Delta
Tue 11/107:05 am
MCI
- PDX
1 stop7h 05m
Delta
Deal found 7/27![Delta logo]()
$328
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:00 am
PDX
- MCI
1 stop5h 37m
United Airlines
Sun 9/66:20 am
MCI
- PDX
1 stop7h 39m
United Airlines
Deal found 7/28![United Airlines logo]()
$334
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.
Sat 9/56:20 am
PDX
- MCI
1 stop5h 32m
Alaska Airlines
Mon 9/142:53 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$337
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/2412:44 pm
GEG
- STL
1 stop8h 58m
American Airlines
Mon 8/313:32 pm
STL
- GEG
1 stop7h 10m
American Airlines
Deal found 7/25![American Airlines logo]()
$369
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 United Airlines deal was found by Cheapflights users on 7/26. 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 8/235:00 am
PDX
- MCI
1 stop5h 37m
United Airlines
Sun 8/306:20 am
MCI
- PDX
1 stop7h 39m
United Airlines
Deal found 7/26![United Airlines logo]()
$334
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.
Wed 8/195:30 pm
SEA
- MCI
Nonstop3h 32m
Delta
Sat 8/227:15 am
MCI
- SEA
Nonstop3h 57m
Delta
Deal found 7/29![Delta logo]()
$337
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 9/238:12 am
SEA
- MCI
Nonstop3h 45m
Alaska Airlines
Mon 9/282:53 pm
MCI
- SEA
1 stop5h 58m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$341
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 9/411:00 pm
SEA
- STL
1 stop7h 15m
Southwest
Tue 9/88:25 am
STL
- SEA
2 stops10h 25m
Southwest
Deal found 7/29![Southwest logo]()
$323
This Delta deal was found by Cheapflights users on 7/26. 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 1/66:04 am
PDX
- SGF
1 stop8h 27m
Delta
Fri 1/1511:40 am
SGF
- PDX
1 stop9h 28m
Delta
Deal found 7/26![Delta logo]()
$341
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.
Wed 9/910:59 pm
SEA
- MCI
1 stop11h 39m
Alaska Airlines
Tue 9/157:00 am
MCI
- SEA
Nonstop3h 57m
Alaska Airlines
Deal found 7/29![Alaska Airlines logo]()
$347
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 Southwest deal was found by Cheapflights users on 7/27. 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 10/2211:10 am
SEA
- STL
2 stops8h 35m
Southwest
Sun 10/256:45 am
STL
- SEA
2 stops9h 00m
Southwest
Deal found 7/27![Southwest logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 9/2011:48 am
PDX
- STL
1 stop10h 11m
Alaska Airlines
Wed 9/236:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$352
This Delta deal was found by Cheapflights users on 7/27. 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 9/115:40 pm
SEA
- MCI
Nonstop3h 36m
Delta
Sun 9/137:08 am
MCI
- SEA
Nonstop3h 51m
Delta
Deal found 7/27![Delta logo]()
$362
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/245:00 am
PDX
- SGF
1 stop5h 56m
United Airlines
Mon 8/311:37 pm
SGF
- PDX
2 stops9h 22m
United Airlines
Deal found 7/26![United Airlines logo]()
$364
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.
Wed 9/306:35 am
PDX
- MCI
2 stops8h 25m
Southwest
Mon 10/58:20 am
MCI
- PDX
1 stop8h 00m
Southwest
Deal found 7/29![Southwest logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 9/207:00 am
MCI
- SEA
Nonstop3h 57m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 7/25. 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 11/191:05 pm
PDX
- MCI
1 stop8h 45m
Delta
Tue 12/13:45 pm
MCI
- PDX
1 stop7h 11m
Delta
Deal found 7/25![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 7/26. 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 8/2812:15 pm
SEA
- SGF
2 stops9h 27m
United Airlines
Fri 9/115:30 am
SGF
- SEA
1 stop6h 31m
United Airlines
Deal found 7/26![United Airlines logo]()
$364
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 8/2211:20 am
PDX
- MCI
2 stops8h 40m
Southwest
Wed 8/266:15 pm
MCI
- PDX
1 stop6h 05m
Southwest
Deal found 7/28![Southwest logo]()
$333
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:15 am
PSC
- STL
2 stops13h 11m
American Airlines
Mon 8/3110:16 am
STL
- PSC
2 stops13h 24m
American Airlines
Deal found 7/29![American Airlines logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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 9/246:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Sun 9/277:00 am
MCI
- SEA
Nonstop3h 57m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 7/27. 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 8/2611:35 am
PDX
- STL
2 stops7h 35m
Southwest
Wed 9/212:20 pm
STL
- PDX
2 stops9h 30m
Southwest
Deal found 7/27![Southwest logo]()
$333
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/205:00 am
GEG
- MCI
1 stop5h 37m
United Airlines
Thu 8/275:13 pm
MCI
- GEG
1 stop5h 33m
United Airlines
Deal found 7/27![United Airlines logo]()
$367
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 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 10/156:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Sun 10/186:17 am
MCI
- SEA
Nonstop4h 03m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$357
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 9/113:25 pm
PDX
- STL
1 stop6h 30m
Southwest
Sun 9/139:55 pm
STL
- PDX
Nonstop4h 15m
Southwest
Deal found 7/29![Southwest logo]()
$339
This Delta deal was found by Cheapflights users on 7/25. 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 11/76:00 am
PDX
- SGF
2 stops13h 19m
Delta
Sun 11/153:30 pm
SGF
- PDX
1 stop8h 22m
Delta
Deal found 7/25![Delta logo]()
$384
Last-minute flights from Washington to MissouriDiscover last-minute flight deals from Washington to Missouri. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Missouri. Data last updated July 30, 2026 and is based on user searches.
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.
Thu 8/136:49 pm
PDX
- STL
1 stop21h 26m
Frontier
Sun 8/167:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Deal found 7/28![Frontier logo]()
$278
This CheapOair deal was found by Cheapflights users on 7/26. 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 8/195:56 pm
PDX
- STL
1 stop23h 17m
Frontier
Mon 8/247:58 pm
STL
- PDX
1 stop23h 13m
Frontier
Deal found 7/26![Frontier logo]()
$251
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/195:20 am
GEG
- MCI
1 stop6h 10m
American Airlines
Mon 8/245:30 am
MCI
- GEG
1 stop8h 24m
American Airlines
Deal found 7/28![American Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 8/202:27 pm
GEG
- MCI
1 stop8h 08m
American Airlines
Sun 8/235:30 am
MCI
- GEG
2 stops10h 39m
American Airlines
Deal found 7/27![American Airlines logo]()
$282
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.
Sun 8/2312:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Fri 8/281:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/29![Frontier logo]()
$282
This CheapOair deal was found by Cheapflights users on 7/27. 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 8/246:17 pm
PDX
- STL
1 stop21h 33m
Frontier
Mon 8/317:58 pm
STL
- PDX
1 stop23h 13m
Frontier
Deal found 7/27![Frontier logo]()
$258
This Priceline deal was found by Cheapflights users on 7/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:03 am
PDX
- MCI
Nonstop3h 35m
Multiple Airlines
Mon 8/311:38 pm
MCI
- PDX
1 stop5h 33m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/255:56 pm
PDX
- MCI
2 stops14h 45m
Frontier
Mon 8/311:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/26![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/265:56 pm
PDX
- STL
1 stop23h 17m
Frontier
Mon 8/317:58 pm
STL
- PDX
1 stop23h 13m
Frontier
Deal found 7/27![Frontier logo]()
$242
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.
Thu 8/271:47 pm
PDX
- STL
1 stop26h 03m
Frontier
Thu 9/36:45 pm
STL
- PDX
1 stop24h 36m
Frontier
Deal found 7/28![Frontier logo]()
$268
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 8/2712:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Sun 8/301:38 pm
MCI
- PDX
2 stops23h 57m
Frontier
Deal found 7/30![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/2812:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Mon 8/311:38 pm
MCI
- PDX
1 stop29h 33m
Frontier
Deal found 7/27![Frontier logo]()
$237
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 July 30, 2026.
Search for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated July 30, 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 7/29. 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.
Wed 10/283:30 pm
SEA
- STL
1 stop5h 40m
Southwest
Deal found 7/29![Southwest logo]()
$69
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 8/2811:00 pm
SEA
- STL
1 stop7h 15m
Southwest
Deal found 7/29![Southwest logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 8/217:06 pm
SEA
- MCI
1 stop15h 47m
Frontier
Deal found 7/26![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 7/26![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 7/26![Frontier logo]()
$94
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.
Thu 8/2711:59 pm
SEA
- STL
1 stop6h 38m
Delta
Deal found 7/28![Delta logo]()
$94
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.
Tue 10/137:41 pm
SEA
- MCI
1 stop15h 41m
Frontier
Deal found 7/29![Frontier logo]()
$97
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.
Mon 10/2612:34 pm
PDX
- MCI
1 stop22h 48m
Frontier
Deal found 7/29![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 Delta deal was found by Cheapflights users on 7/25. 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.
Tue 8/255:45 am
SEA
- STL
1 stop5h 53m
Delta
Deal found 7/25![Delta logo]()
$99
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.
Tue 9/85:56 pm
PDX
- MCI
1 stop23h 41m
Frontier
Deal found 7/29![Frontier logo]()
$99
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 July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $222 (Kiwi.com) |
One-way from | $89 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $507 |
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 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 July 30, 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
SpokaneKansas City
GEG - MCI
GEGMCI
Spokane
Sat 8/22
6:15 am-2:30 pm
1 stop6h 15m
Kansas City
Sat 8/29
5:40 am-12:05 pm
1 stop8h 25m
$277
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
Fri 9/4
11:00 pm-8:15 am
1 stop7h 15m
Lambert-St Louis
Tue 9/8
8:25 am-4:50 pm
2 stops10h 25m
$323
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sun 11/1
3:31 pm-11:31 pm
1 stop6h 00m
Kansas City
Tue 11/10
7:05 am-12:10 pm
1 stop7h 05m
$328
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Thu 10/22
11:10 am-9:45 pm
2 stops8h 35m
Lambert-St Louis
Sun 10/25
6:45 am-1:45 pm
2 stops9h 00m
$332
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Wed 9/30
6:35 am-5:00 pm
2 stops8h 25m
Kansas City
Mon 10/5
8:20 am-2:20 pm
1 stop8h 00m
$333
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sat 8/22
11:20 am-10:00 pm
2 stops8h 40m
Kansas City
Wed 8/26
6:15 pm-10:20 pm
1 stop6h 05m
$333
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Wed 8/26
11:35 am-9:10 pm
2 stops7h 35m
Lambert-St Louis
Wed 9/2
12:20 pm-7:50 pm
2 stops9h 30m
$333
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Fri 9/4
5:00 am-12:37 pm
1 stop5h 37m
Kansas City
Sun 9/6
6:20 am-11:59 am
1 stop7h 39m
$334
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sun 8/23
5:00 am-12:37 pm
1 stop5h 37m
Kansas City
Sun 8/30
6:20 am-11:59 am
1 stop7h 39m
$334
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.
PDX-MCI
PDX-STL
GEG-MCI
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
PDX-MCI
PDX-STL
GEG-MCI
SEA-STL
What is the cheapest month to book a flight from State of Washington to Missouri?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $319). Flying from State of Washington to Missouri in July is currently the most expensive (average of $514). 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 July 30, 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 July 30, 2026.
The most flights from USWA to USMO are scheduled on a Monday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from State of Washington to Missouri?
Airfare is below average for this route at the moment.
State of Washington to Missouri flights typically cost between $294 and $568 in September.The cheapest round-trip price found within the last 5 days was $293 on Southwest (Sep 28-Oct 1).
How far ahead should I book a flight from State of Washington to Missouri?
The best time to book flights from State of Washington to Missouri is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 July 30, 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.
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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 July 30, 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 7 airlines flying from Washington to Missouri
Discover the top 7 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$397 | 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$454 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$169 | Average$451 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$522 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$504 | FlexibilityNo cancel fee | On-time75% |