$85+ 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
maj 21 — maj 281
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 Kwiecień 21, 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 Kwiecień 21, 2026.
This Delta deal was found by Cheapflights users on 4/20. 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.
wt. 8/185:05 pm
PDX
- STL
1 stop5h 31m
Delta
wt. 8/257:30 am
STL
- PDX
1 stop7h 01m
Delta
Deal found 4/20![Delta logo]()
$205
This CheapOair deal was found by Cheapflights users on 4/16. 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.
pt. 5/17:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
pon. 5/42:15 pm
MCI
- SEA
1 stop21h 34m
Frontier
Deal found 4/16![Frontier logo]()
$211
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
śr. 5/2710:59 pm
PDX
- MCI
1 stop7h 36m
American Airlines
śr. 6/37:46 pm
MCI
- PDX
1 stop7h 04m
American Airlines
Deal found 4/20![American Airlines logo]()
$215
This CheapOair deal was found by Cheapflights users on 4/16. 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.
pon. 5/118:46 pm
PDX
- STL
1 stop19h 20m
Frontier
czw. 5/1412:36 pm
STL
- PDX
1 stop10h 15m
Frontier
Deal found 4/16![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pon. 5/117:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
wt. 5/192:34 pm
MCI
- SEA
2 stops30h 01m
Frontier
Deal found 4/20![Frontier logo]()
$228
This Delta deal was found by Cheapflights users on 4/20. 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.
śr. 8/2610:15 am
PDX
- MCI
1 stop5h 08m
Delta
pon. 8/313:45 pm
MCI
- PDX
1 stop8h 37m
Delta
Deal found 4/20![Delta logo]()
$236
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pon. 5/47:12 pm
SEA
- MCI
1 stop16h 37m
Frontier
pt. 5/82:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 4/19![Frontier logo]()
$237
This Southwest deal was found by Cheapflights users on 4/20. 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.
wt. 8/1811:30 pm
PDX
- STL
1 stop8h 05m
Southwest
wt. 8/255:35 am
STL
- PDX
2 stops11h 50m
Southwest
Deal found 4/20![Southwest logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pon. 5/117:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
pt. 5/152:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 4/20![Frontier logo]()
$239
This CheapOair deal was found by Cheapflights users on 4/16. 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.
śr. 5/207:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
czw. 5/282:34 pm
MCI
- SEA
1 stop25h 27m
Frontier
Deal found 4/16![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 4/16. 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.
czw. 5/149:46 pm
PDX
- STL
1 stop20h 37m
Frontier
czw. 5/219:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 4/16![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 4/20. 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.
śr. 8/266:35 am
PDX
- MCI
2 stops8h 25m
Southwest
pon. 8/314:55 pm
MCI
- PDX
1 stop6h 15m
Southwest
Deal found 4/20![Southwest logo]()
$242
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 Kwiecień 21, 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 Kwiecień 21, 2026.
This Delta deal was found by Cheapflights users on 4/20. 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.
wt. 5/1911:12 pm
PDX
- STL
1 stop8h 17m
Delta
wt. 5/261:59 pm
STL
- PDX
1 stop10h 03m
Delta
Deal found 4/20![Delta logo]()
$296
This Southwest deal was found by Cheapflights users on 4/20. 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.
pt. 6/55:00 pm
PDX
- MCI
1 stop6h 30m
Southwest
ndz. 6/712:35 pm
MCI
- PDX
Nonstop3h 35m
Southwest
Deal found 4/20![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
czw. 5/2110:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
śr. 5/275:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 4/17. 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.
pt. 5/12:27 pm
SEA
- STL
1 stop6h 23m
United Airlines
ndz. 5/244:48 pm
STL
- SEA
1 stop8h 22m
United Airlines
Deal found 4/17![United Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pon. 6/812:33 pm
GEG
- STL
1 stop28h 50m
Frontier
wt. 7/76:58 pm
STL
- GEG
2 stops18h 35m
Frontier
Deal found 4/20![Frontier logo]()
$420
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 7/283:00 pm
GEG
- STL
1 stop6h 59m
American Airlines
śr. 8/58:00 am
STL
- GEG
1 stop8h 03m
American Airlines
Deal found 4/21![American Airlines logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
wt. 5/1910:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
wt. 5/265:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 4/18. 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.
śr. 6/311:05 am
PDX
- MCI
1 stop7h 38m
United Airlines
wt. 6/165:24 pm
MCI
- PDX
1 stop5h 51m
United Airlines
Deal found 4/18![United Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 4/20. 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.
śr. 5/1311:45 pm
SEA
- STL
1 stop8h 25m
Southwest
pt. 5/155:15 pm
STL
- SEA
2 stops9h 25m
Southwest
Deal found 4/20![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 4/19. 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.
śr. 8/1910:35 am
PDX
- MCI
1 stop8h 16m
United Airlines
ndz. 8/236:00 am
MCI
- PDX
1 stop5h 21m
United Airlines
Deal found 4/19![United Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 4/19. 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.
śr. 8/1911:35 am
PDX
- MCI
2 stops8h 45m
Southwest
ndz. 8/236:25 am
MCI
- PDX
1 stop6h 55m
Southwest
Deal found 4/19![Southwest logo]()
$332
This Delta deal was found by Cheapflights users on 4/17. 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.
pt. 6/125:30 pm
SEA
- MCI
Nonstop3h 39m
Delta
ndz. 6/147:00 am
MCI
- SEA
Nonstop4h 06m
Delta
Deal found 4/17![Delta logo]()
$377
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
wt. 6/25:00 am
PDX
- MCI
1 stop6h 57m
Alaska Airlines
sob. 6/65:52 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 4/19. 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.
wt. 9/811:15 pm
PDX
- SGF
1 stop9h 28m
United Airlines
wt. 9/155:40 am
SGF
- PDX
1 stop5h 41m
United Airlines
Deal found 4/19![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 4/17. 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.
czw. 5/285:15 am
SEA
- STL
1 stop8h 10m
Southwest
wt. 6/25:30 am
STL
- SEA
2 stops14h 30m
Southwest
Deal found 4/17![Southwest logo]()
$335
This Delta deal was found by Cheapflights users on 4/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 7/311:59 pm
SEA
- MCI
1 stop6h 34m
Delta
ndz. 7/57:00 am
MCI
- SEA
Nonstop4h 06m
Delta
Deal found 4/19![Delta logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
śr. 5/135:00 am
PDX
- MCI
1 stop6h 57m
Alaska Airlines
pt. 5/155:52 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 4/16![Alaska Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 4/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
wt. 6/210:40 pm
PDX
- MCI
1 stop8h 28m
United Airlines
sob. 6/64:26 pm
MCI
- PDX
2 stops8h 22m
United Airlines
Deal found 4/20![United Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 4/17. 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.
pt. 5/158:35 am
PDX
- MCI
2 stops11h 30m
Southwest
wt. 5/196:55 pm
MCI
- PDX
1 stop6h 15m
Southwest
Deal found 4/17![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 4/20. 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.
śr. 7/812:36 pm
SEA
- MCI
1 stop8h 56m
Delta
śr. 7/227:00 am
MCI
- SEA
Nonstop3h 57m
Delta
Deal found 4/20![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 4/17. 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.
ndz. 5/105:00 am
PDX
- MCI
1 stop5h 43m
United Airlines
wt. 5/126:00 am
MCI
- PDX
2 stops8h 25m
United Airlines
Deal found 4/17![United Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 4/20. 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.
pt. 6/55:30 pm
SEA
- MCI
Nonstop3h 38m
Delta
pon. 6/87:26 am
MCI
- SEA
1 stop9h 24m
Delta
Deal found 4/20![Delta logo]()
$387
This Southwest deal was found by Cheapflights users on 4/19. 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.
czw. 5/2810:45 am
PDX
- MCI
2 stops10h 05m
Southwest
śr. 6/107:05 pm
MCI
- PDX
1 stop5h 30m
Southwest
Deal found 4/19![Southwest logo]()
$357
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
pon. 6/11:59 pm
GEG
- MCI
1 stop7h 50m
Alaska Airlines
śr. 6/35:52 pm
MCI
- GEG
1 stop7h 14m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 4/16. 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.
pon. 6/222:08 pm
GEG
- SGF
1 stop6h 31m
American Airlines
ndz. 6/287:11 am
SGF
- GEG
1 stop8h 03m
American Airlines
Deal found 4/16![American Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 4/17. 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.
pt. 5/111:59 pm
PDX
- STL
1 stop7h 31m
United Airlines
ndz. 5/245:10 am
STL
- PDX
1 stop6h 38m
United Airlines
Deal found 4/17![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 4/19. 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.
sob. 5/2312:40 pm
PDX
- MCI
1 stop5h 55m
Southwest
ndz. 5/247:05 am
MCI
- PDX
1 stop8h 20m
Southwest
Deal found 4/19![Southwest logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
wt. 6/21:59 pm
GEG
- STL
1 stop7h 55m
Alaska Airlines
sob. 6/67:41 pm
STL
- GEG
1 stop6h 18m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 4/17. 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.
śr. 6/175:05 pm
GEG
- STL
1 stop5h 34m
Delta
ndz. 6/216:21 am
STL
- GEG
1 stop7h 19m
Delta
Deal found 4/17![Delta logo]()
$407
This United Airlines deal was found by Cheapflights users on 4/16. 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.
czw. 5/142:41 pm
PDX
- MCI
1 stop6h 50m
United Airlines
śr. 5/206:56 pm
MCI
- PDX
1 stop6h 59m
United Airlines
Deal found 4/16![United Airlines logo]()
$352
Last-minute flights from Washington to MissouriDiscover last-minute flight deals from Washington to Missouri. Data last updated Kwiecień 21, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Missouri. Data last updated Kwiecień 21, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 4/16. 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.
pt. 5/17:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
pon. 5/42:15 pm
MCI
- SEA
1 stop21h 34m
Frontier
Deal found 4/16![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pon. 5/47:12 pm
SEA
- MCI
1 stop16h 37m
Frontier
pt. 5/82:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 4/19![Frontier logo]()
$237
This Expedia deal was found by Cheapflights users on 4/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/812:35 pm
PDX
- STL
1 stop28h 48m
Frontier
ndz. 5/108:08 pm
STL
- PDX
1 stop22h 38m
Frontier
Deal found 4/18![Frontier logo]()
$245
This Frontier deal was found by Cheapflights users on 4/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/87:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
czw. 5/142:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 4/18![Frontier logo]()
$251
This CheapOair deal was found by Cheapflights users on 4/16. 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.
pon. 5/118:46 pm
PDX
- STL
1 stop19h 20m
Frontier
czw. 5/1412:36 pm
STL
- PDX
1 stop10h 15m
Frontier
Deal found 4/16![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pon. 5/117:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
wt. 5/192:34 pm
MCI
- SEA
2 stops30h 01m
Frontier
Deal found 4/20![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pon. 5/117:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
pt. 5/152:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 4/20![Frontier logo]()
$239
This CheapOair deal was found by Cheapflights users on 4/16. 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.
czw. 5/149:46 pm
PDX
- STL
1 stop20h 37m
Frontier
czw. 5/219:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 4/16![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 4/16. 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.
śr. 5/207:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
czw. 5/282:34 pm
MCI
- SEA
1 stop25h 27m
Frontier
Deal found 4/16![Frontier logo]()
$241
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sob. 5/2310:59 pm
PDX
- STL
1 stop7h 33m
American Airlines
sob. 5/307:20 pm
STL
- PDX
1 stop7h 30m
American Airlines
Deal found 4/20![American Airlines logo]()
$243
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
śr. 5/2710:59 pm
PDX
- MCI
1 stop7h 36m
American Airlines
śr. 6/37:46 pm
MCI
- PDX
1 stop7h 04m
American Airlines
Deal found 4/20![American Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
pt. 5/297:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
pon. 6/86:24 pm
MCI
- SEA
2 stops21h 54m
Frontier
Deal found 4/20![Frontier logo]()
$250
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 Kwiecień 21, 2026.
Search for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated Kwiecień 21, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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.
wt. 5/1911:45 pm
SEA
- STL
1 stop7h 45m
Southwest
Deal found 4/20![Southwest logo]()
$85
This Super.com deal was found by Cheapflights users on 4/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/157:50 pm
SEA
- STL
1 stop21h 33m
Frontier
Deal found 4/20![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 4/16. 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.
pt. 5/87:50 pm
SEA
- STL
1 stop21h 33m
Frontier
Deal found 4/16![Frontier logo]()
$92
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pon. 5/118:46 pm
PDX
- STL
1 stop19h 20m
Frontier
Deal found 4/19![Frontier logo]()
$92
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pon. 5/112:10 pm
SEA
- STL
1 stop6h 49m
American Airlines
Deal found 4/20![American Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/18. 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.
pt. 5/812:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 4/18![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
śr. 5/207:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
Deal found 4/16![Frontier logo]()
$102
This Delta deal was found by Cheapflights users on 4/20. 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.
wt. 5/195:05 pm
PDX
- STL
1 stop5h 25m
Delta
Deal found 4/20![Delta logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
pon. 5/117:50 pm
SEA
- MCI
1 stop15h 59m
Frontier
Deal found 4/17![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 4/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pt. 5/17:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Deal found 4/17![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
pt. 5/293:19 pm
SEA
- MCI
1 stop20h 30m
Frontier
Deal found 4/19![Frontier logo]()
$107
This Southwest deal was found by Cheapflights users on 4/19. 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.
wt. 5/1911:55 pm
PDX
- MCI
1 stop7h 20m
Southwest
Deal found 4/19![Southwest logo]()
$108
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 Kwiecień 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $205 (Delta) |
One-way from | $85 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $397 |
Good round-trip deal | $333 or less |
Good one-way deal | $188 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 Kwiecień 21, 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
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
wt. 5/19
11:12 pm-9:29 am
1 stop8h 17m
Lambert-St Louis
wt. 5/26
1:59 pm-10:02 pm
1 stop10h 03m
$296
PortlandKansas City
PDX - MCI
PDXMCI
Portland
pt. 6/5
5:00 pm-1:30 am
1 stop6h 30m
Kansas City
ndz. 6/7
12:35 pm-2:10 pm
Nonstop3h 35m
$303
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
czw. 5/21
10:37 am-4:37 pm
Nonstop4h 00m
Lambert-St Louis
śr. 5/27
5:33 pm-7:50 pm
Nonstop4h 17m
$303
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
wt. 5/19
10:37 am-4:37 pm
Nonstop4h 00m
Lambert-St Louis
wt. 5/26
5:33 pm-7:50 pm
Nonstop4h 17m
$303
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
pt. 5/1
2:27 pm-10:50 pm
1 stop6h 23m
Lambert-St Louis
ndz. 5/24
4:48 pm-11:10 pm
1 stop8h 22m
$310
PortlandKansas City
PDX - MCI
PDXMCI
Portland
śr. 6/3
11:05 am-8:43 pm
1 stop7h 38m
Kansas City
wt. 6/16
5:24 pm-9:15 pm
1 stop5h 51m
$322
PortlandKansas City
PDX - MCI
PDXMCI
Portland
śr. 8/19
10:35 am-8:51 pm
1 stop8h 16m
Kansas City
ndz. 8/23
6:00 am-9:21 am
1 stop5h 21m
$322
PortlandSpringfield
PDX - SGF
PDXSGF
Portland
wt. 9/8
11:15 pm-10:43 am
1 stop9h 28m
Springfield-Branson
wt. 9/15
5:40 am-9:21 am
1 stop5h 41m
$329
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
śr. 5/13
11:45 pm-10:10 am
1 stop8h 25m
Lambert-St Louis
pt. 5/15
5:15 pm-12:40 am
2 stops9h 25m
$331
PortlandKansas City
PDX - MCI
PDXMCI
Portland
śr. 8/19
11:35 am-10:20 pm
2 stops8h 45m
Kansas City
ndz. 8/23
6:25 am-11:20 am
1 stop6h 55m
$332
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, January is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $88). Flying from State of Washington to Missouri in October is currently the most expensive (average of $148). 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 Kwiecień 21, 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.
How much does it cost to fly round-trip from State of Washington to Missouri?
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 Kwiecień 21, 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.
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
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.
Browse thousands of different options on Cheapflights for your next trip
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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 Kwiecień 21, 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 Kwiecień 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$366 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$250 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$375 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$459 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$178 | Average$399 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$478 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$448 | FlexibilityNo cancel fee | On-time75% |