$81+ Cheap flights from Missouri to Washington
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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
Apr 21 — Apr 281
Round-trip
1 adult, Economy
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Cheapest flights from Missouri to WashingtonExplore the most affordable flight options available from Missouri to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on März 22, 2026.
Explore the most affordable flight options available from Missouri to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on März 22, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/186:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Sa 4/256:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$193
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/186:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Fr 4/246:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$194
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/136:51 pm
STL
- PDX
1 stop28h 00m
Frontier
Mo 5/188:46 pm
PDX
- STL
1 stop19h 20m
Frontier
Deal found 3/19![Frontier logo]()
$196
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.
Fr 5/88:08 pm
STL
- SEA
1 stop15h 41m
Frontier
Sa 5/1611:37 am
SEA
- STL
1 stop21h 44m
Frontier
Deal found 3/20![Frontier logo]()
$196
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.
Fr 4/176:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Sa 4/256:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$199
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.
Fr 4/178:06 pm
STL
- SEA
1 stop15h 21m
Frontier
Fr 4/247:12 pm
SEA
- STL
1 stop22h 20m
Frontier
Deal found 3/19![Frontier logo]()
$205
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.
Fr 4/177:42 am
MCI
- SEA
Nonstop4h 09m
Delta
So 4/194:36 pm
SEA
- MCI
1 stop6h 02m
Delta
Deal found 3/18![Delta logo]()
$209
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.
Mi 4/153:30 pm
MCI
- PDX
1 stop9h 40m
Southwest
Di 4/2111:55 pm
PDX
- MCI
1 stop7h 20m
Southwest
Deal found 3/22![Southwest 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.
Fr 5/88:08 pm
STL
- SEA
1 stop15h 41m
Frontier
So 5/177:50 pm
SEA
- STL
1 stop21h 33m
Frontier
Deal found 3/20![Frontier logo]()
$216
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.
Fr 5/17:01 pm
STL
- SEA
2 stops16h 26m
Frontier
Mi 5/67:50 pm
SEA
- STL
1 stop21h 33m
Frontier
Deal found 3/19![Frontier logo]()
$218
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.
Do 4/167:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Do 4/231:45 pm
SEA
- MCI
1 stop8h 12m
Delta
Deal found 3/18![Delta logo]()
$219
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/26:06 pm
MCI
- SEA
1 stop8h 30m
American Airlines
Sa 5/97:10 am
SEA
- MCI
1 stop7h 57m
American Airlines
Deal found 3/18![American Airlines logo]()
$220
Best flights from Missouri to WashingtonDiscover carefully curated flight deals from Missouri to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated März 22, 2026.
Discover carefully curated flight deals from Missouri to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated März 22, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/137:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Mo 4/206:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Deal found 3/19![Delta logo]()
$209
This Southwest deal was found by Cheapflights users on 3/17. 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.
Di 4/215:30 am
MCI
- SEA
1 stop7h 50m
Southwest
Fr 4/2410:55 am
SEA
- MCI
2 stops9h 10m
Southwest
Deal found 3/17![Southwest logo]()
$224
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.
Mi 4/156:00 am
STL
- SEA
1 stop8h 47m
United Airlines
Mi 4/226:30 am
SEA
- STL
1 stop7h 38m
United Airlines
Deal found 3/18![United Airlines logo]()
$249
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.
Mi 5/135:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Mo 5/1810:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$273
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 5/14:28 pm
COU
- SEA
1 stop8h 10m
American Airlines
Di 5/511:33 pm
SEA
- COU
1 stop8h 13m
American Airlines
Deal found 3/20![American Airlines logo]()
$358
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.
Mi 5/277:23 pm
STL
- SEA
1 stop7h 50m
United Airlines
Di 6/27:00 am
SEA
- STL
1 stop6h 46m
United Airlines
Deal found 3/22![United Airlines logo]()
$249
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.
Di 6/26:30 pm
MCI
- PDX
1 stop6h 30m
Southwest
Di 6/95:20 pm
PDX
- MCI
2 stops13h 25m
Southwest
Deal found 3/22![Southwest logo]()
$283
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/95:11 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Di 5/1911:30 am
PDX
- MCI
Nonstop3h 27m
Alaska Airlines
Deal found 3/21![Alaska Airlines logo]()
$297
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/287:59 pm
STL
- SEA
1 stop6h 13m
Delta
Mo 6/811:53 pm
SEA
- STL
1 stop6h 47m
Delta
Deal found 3/19![Delta logo]()
$304
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 5/285:41 pm
STL
- SEA
1 stop8h 18m
United Airlines
Mi 6/33:40 pm
SEA
- STL
1 stop6h 17m
United Airlines
Deal found 3/21![United Airlines logo]()
$283
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.
Mo 4/136:45 pm
STL
- PDX
1 stop7h 08m
Delta
Mo 4/2711:15 pm
PDX
- STL
1 stop8h 27m
Delta
Deal found 3/22![Delta logo]()
$309
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.
Di 4/287:00 am
MCI
- GEG
1 stop8h 23m
Alaska Airlines
Sa 5/25:00 am
GEG
- MCI
1 stop7h 04m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$317
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.
Di 5/56:30 pm
STL
- GEG
1 stop6h 55m
Southwest
Di 5/125:10 am
GEG
- STL
1 stop6h 20m
Southwest
Deal found 3/21![Southwest logo]()
$317
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.
Mo 5/187:09 pm
STL
- SEA
1 stop6h 50m
United Airlines
Mo 5/2511:52 pm
SEA
- STL
1 stop6h 49m
United Airlines
Deal found 3/18![United Airlines logo]()
$296
This American Airlines deal was found by Cheapflights users on 3/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 6/27:30 pm
SGF
- PDX
1 stop7h 20m
American Airlines
Di 6/910:59 pm
PDX
- SGF
1 stop9h 01m
American Airlines
Deal found 3/17![American Airlines logo]()
$369
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.
Di 4/287:42 am
MCI
- GEG
1 stop6h 45m
Delta
Sa 5/26:15 am
GEG
- MCI
2 stops12h 41m
Delta
Deal found 3/18![Delta logo]()
$312
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.
Sa 5/26:10 am
STL
- PDX
2 stops14h 35m
Southwest
Mo 5/411:55 pm
PDX
- STL
1 stop7h 35m
Southwest
Deal found 3/20![Southwest logo]()
$320
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.
Sa 7/187:23 pm
STL
- SEA
1 stop7h 50m
United Airlines
Di 7/2111:52 pm
SEA
- STL
1 stop6h 49m
United Airlines
Deal found 3/19![United Airlines logo]()
$299
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.
Do 4/162:15 pm
MCI
- PDX
2 stops9h 17m
Delta
Do 4/2310:42 am
PDX
- MCI
2 stops11h 15m
Delta
Deal found 3/18![Delta logo]()
$317
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.
Di 5/58:45 am
MCI
- GEG
1 stop7h 00m
Southwest
Sa 5/910:45 am
GEG
- MCI
2 stops7h 50m
Southwest
Deal found 3/20![Southwest logo]()
$322
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Di 4/286:00 am
MCI
- SEA
1 stop5h 46m
United Airlines
Sa 5/27:36 pm
SEA
- MCI
2 stops11h 05m
United Airlines
Deal found 3/17![United Airlines logo]()
$304
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.
Do 4/161:46 pm
STL
- PDX
1 stop9h 56m
Delta
Mi 4/226:15 am
PDX
- STL
1 stop8h 35m
Delta
Deal found 3/22![Delta logo]()
$318
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.
So 5/109:05 pm
MCI
- PDX
1 stop6h 20m
Southwest
Sa 5/1612:40 pm
PDX
- MCI
1 stop5h 55m
Southwest
Deal found 3/21![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 3/17. 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.
Do 4/96:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Sa 4/1112:35 am
SEA
- MCI
1 stop7h 43m
Alaska Airlines
Deal found 3/17![Alaska Airlines logo]()
$399
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/188:00 am
MCI
- GEG
2 stops9h 15m
United Airlines
Sa 4/251:46 pm
GEG
- MCI
1 stop4h 48m
United Airlines
Deal found 3/21![United Airlines logo]()
$322
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.
Mo 5/117:00 pm
MCI
- PDX
1 stop5h 40m
Southwest
Sa 5/1611:55 pm
PDX
- MCI
1 stop6h 05m
Southwest
Deal found 3/19![Southwest logo]()
$322
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 9/77:40 pm
MCI
- PDX
1 stop6h 01m
Delta
Do 9/1010:15 am
PDX
- MCI
1 stop5h 08m
Delta
Deal found 3/19![Delta logo]()
$327
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.
Sa 6/207:56 pm
STL
- PDX
1 stop6h 26m
Alaska Airlines
Sa 6/2710:45 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$402
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.
Do 8/208:25 am
STL
- SEA
Nonstop4h 20m
Southwest
Mo 8/2411:05 pm
SEA
- STL
1 stop8h 30m
Southwest
Deal found 3/19![Southwest logo]()
$322
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.
Mo 4/136:00 am
MCI
- PDX
1 stop5h 48m
United Airlines
Fr 4/174:15 pm
PDX
- MCI
1 stop5h 17m
United Airlines
Deal found 3/18![United Airlines logo]()
$327
Last-minute flights from Missouri to WashingtonDiscover last-minute flight deals from Missouri to Washington. Data last updated März 22, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Washington. Data last updated März 22, 2026 and is based on user searches.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/138:19 pm
STL
- PDX
1 stop18h 43m
Frontier
Mo 4/2711:48 am
PDX
- STL
1 stop5h 44m
Frontier
Deal found 3/19![Frontier logo]()
$216
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.
Mi 4/153:30 pm
MCI
- PDX
1 stop9h 40m
Southwest
Di 4/2111:55 pm
PDX
- MCI
1 stop7h 20m
Southwest
Deal found 3/22![Southwest logo]()
$216
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.
Do 4/167:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Do 4/231:45 pm
SEA
- MCI
1 stop8h 12m
Delta
Deal found 3/18![Delta logo]()
$219
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.
Fr 4/176:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Sa 4/256:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/18![Alaska Airlines logo]()
$199
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.
Fr 4/178:06 pm
STL
- SEA
1 stop15h 21m
Frontier
Fr 4/247:12 pm
SEA
- STL
1 stop22h 20m
Frontier
Deal found 3/19![Frontier logo]()
$205
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.
Fr 4/177:42 am
MCI
- SEA
Nonstop4h 09m
Delta
So 4/194:36 pm
SEA
- MCI
1 stop6h 02m
Delta
Deal found 3/18![Delta logo]()
$209
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fr 4/176:15 am
MCI
- SEA
Nonstop4h 09m
Hawaiian Airlines
So 4/196:27 pm
SEA
- MCI
Nonstop3h 32m
Hawaiian Airlines
Deal found 3/18![Hawaiian Airlines logo]()
$223
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/186:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Sa 4/256:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$193
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/186:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Fr 4/246:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Deal found 3/19![Alaska Airlines logo]()
$194
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.
Sa 4/252:51 pm
MCI
- PDX
1 stop21h 29m
Frontier
Sa 5/212:27 pm
PDX
- MCI
1 stop23h 03m
Frontier
Deal found 3/22![Frontier logo]()
$221
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 4/258:17 pm
STL
- SEA
1 stop15h 10m
Frontier
Sa 5/27:12 pm
SEA
- STL
1 stop22h 09m
Frontier
Deal found 3/21![Frontier logo]()
$221
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.
Do 4/302:15 pm
MCI
- SEA
1 stop26h 50m
Frontier
So 5/37:12 pm
SEA
- MCI
1 stop16h 18m
Frontier
Deal found 3/20![Frontier logo]()
$221
One-way flights from Missouri to WashingtonSearch for one-way flight options from Missouri to Washington. Find affordable one-way fares based on user searches. Data last updated März 22, 2026.
Search for one-way flight options from Missouri to Washington. Find affordable one-way fares based on user searches. Data last updated März 22, 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.
Fr 4/248:06 pm
STL
- SEA
1 stop15h 21m
Frontier
Deal found 3/19![Frontier logo]()
$81
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.
Mo 4/208:17 pm
STL
- SEA
1 stop15h 10m
Frontier
Deal found 3/18![Frontier logo]()
$82
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Do 4/239:55 pm
STL
- PDX
1 stop13h 04m
Frontier
Deal found 3/21![Frontier logo]()
$86
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.
Fr 4/38:16 pm
STL
- SEA
1 stop17h 21m
Frontier
Deal found 3/18![Frontier logo]()
$86
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/278:17 pm
STL
- PDX
1 stop17h 35m
Frontier
Deal found 3/22![Frontier logo]()
$88
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 4/138:19 pm
STL
- PDX
1 stop18h 43m
Frontier
Deal found 3/22![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.
Di 5/52:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 3/20![Frontier logo]()
$92
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.
Di 5/122:34 pm
MCI
- SEA
1 stop21h 15m
Frontier
Deal found 3/19![Frontier logo]()
$94
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.
Do 4/168:06 pm
STL
- SEA
1 stop20h 59m
Frontier
Deal found 3/19![Frontier logo]()
$95
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.
Mo 4/202:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/20![Frontier logo]()
$108
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.
Mo 4/208:17 pm
STL
- PDX
1 stop17h 35m
Frontier
Deal found 3/18![Frontier logo]()
$109
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 4/215:30 am
MCI
- SEA
1 stop7h 18m
American Airlines
Deal found 3/18![American Airlines logo]()
$110
Find flight deals from Missouri to Washington
Keep the following information in mind while searching for Missouri to Washington flight deals. Data was last updated März 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $193 (Trip.com) |
One-way from | $81 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $298 |
Good round-trip deal | $318 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri to Washington 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 März 22, 2026.
Use the filters below to find and compare flights from Missouri to Washington that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Kansas CitySeattle
MCI - SEA
MCISEA
Kansas City
Mo 4/13
7:42 am-9:51 am
Nonstop4h 09m
Seattle/Tacoma Intl
Mo 4/20
6:10 pm-11:43 pm
Nonstop3h 33m
$209
Kansas CitySeattle
MCI - SEA
MCISEA
Kansas City
Di 4/21
5:30 am-11:20 am
1 stop7h 50m
Seattle/Tacoma Intl
Fr 4/24
10:55 am-10:05 pm
2 stops9h 10m
$224
St. LouisSeattle
STL - SEA
STLSEA
Lambert-St Louis
Mi 4/15
6:00 am-12:47 pm
1 stop8h 47m
Seattle/Tacoma Intl
Mi 4/22
6:30 am-4:08 pm
1 stop7h 38m
$249
St. LouisSeattle
STL - SEA
STLSEA
Lambert-St Louis
Mi 5/27
7:23 pm-1:13 am
1 stop7h 50m
Seattle/Tacoma Intl
Di 6/2
7:00 am-3:46 pm
1 stop6h 46m
$249
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Mi 5/13
5:33 pm-7:50 pm
Nonstop4h 17m
Portland
Mo 5/18
10:37 am-4:37 pm
Nonstop4h 00m
$273
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Di 6/2
6:30 pm-11:00 pm
1 stop6h 30m
Portland
Di 6/9
5:20 pm-8:45 am
2 stops13h 25m
$283
St. LouisSeattle
STL - SEA
STLSEA
Lambert-St Louis
Do 5/28
5:41 pm-11:59 pm
1 stop8h 18m
Seattle/Tacoma Intl
Mi 6/3
3:40 pm-11:57 pm
1 stop6h 17m
$283
St. LouisSeattle
STL - SEA
STLSEA
Lambert-St Louis
Mo 5/18
7:09 pm-11:59 pm
1 stop6h 50m
Seattle/Tacoma Intl
Mo 5/25
11:52 pm-8:41 am
1 stop6h 49m
$296
Quickest round-trip
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Sa 5/9
5:11 pm-7:03 pm
Nonstop3h 52m
Portland
Di 5/19
11:30 am-4:57 pm
Nonstop3h 27m
$297
St. LouisSeattle
STL - SEA
STLSEA
Lambert-St Louis
Sa 7/18
7:23 pm-1:13 am
1 stop7h 50m
Seattle/Tacoma Intl
Di 7/21
11:52 pm-8:41 am
1 stop6h 49m
$299
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Missouri to Washington
Have a flexible travel schedule? Discover the best time to fly to Washington from Missouri with our price prediction graph.
MCI-SEA
MCI-PDX
SGF-PDX
STL-GEG
STL-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Missouri to Washington
USMO-USWA
MCI-SEA
MCI-PDX
SGF-PDX
STL-GEG
What is the cheapest month to book a flight from Missouri to State of Washington?
Currently, March is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $109). Flying from Missouri to State of Washington in July is currently the most expensive (average of $188). 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 MO to WA?
Find hourly flight availability from Missouri to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated März 22, 2026.
It’s typically best to fly out from Missouri to State of Washington in the evening. Doing so could potentially save you 19% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from Missouri to State of Washington?
Use this chart to determine the cheapest time to fly round-trip from Missouri to Washington. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Missouri to State of Washington flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Missouri to State of Washington
Explore weekly flight availability from Missouri to Washington. 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 März 22, 2026.
The most flights from USMO to USWA are scheduled on a Friday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
Reviews of airlines servicing Washington
Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated März 22, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andHawaiian Airlines from Missouri to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Related info for your journey
Find useful and relevant information for your journey from Missouri to Washington. 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 Missouri to Washington
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Washington by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missouri to Washington by cabin class
Find flights from Missouri to Washington, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Missouri and Washington flights
Browse other Missouri and Washington flight options. Last updated on März 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Washington
Find the right flight back to Missouri after your stay in Washington
Missouri to Washington flights
Consider these flights traveling from Missouri to Washington.
Top 8 airlines flying from Missouri to Washington
Discover the top 8 airlines that operate flights from Missouri to Washington. 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 März 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$89 | Average$224 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$94 | Average$349 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$119 | Average$225 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$151 | Average$478 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$163 | Average$414 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$169 | Average$359 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$178 | Average$452 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$183 | Average$480 | FlexibilityNo cancel fee | On-time71% |