$90+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — SEA
Aug 2 — Aug 91
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 July 3, 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 July 3, 2026.
This Frontier deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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.
Sat 8/221:38 pm
MCI
- PDX
1 stop5h 33m
Frontier
Sat 8/2912:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Deal found 7/3![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:17 pm
SGF
- SEA
1 stop15h 22m
Multiple Airlines
Sun 9/69:29 pm
SEA
- SGF
1 stop20h 53m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$254
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 7/237:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Fri 7/315:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/3![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:38 pm
MCI
- PDX
1 stop5h 33m
Frontier
Wed 9/93:22 pm
PDX
- MCI
1 stop20h 00m
Frontier
Deal found 6/30![Frontier logo]()
$260
This Trip.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Fri 8/75:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/3![Frontier logo]()
$263
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:58 pm
MCI
- PDX
1 stop25h 38m
Frontier
Sat 7/1112:20 pm
PDX
- MCI
1 stop22h 40m
Frontier
Deal found 6/30![Frontier logo]()
$268
This Priceline deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:46 pm
STL
- PDX
1 stop9h 53m
Multiple Airlines
Tue 9/2911:16 am
PDX
- STL
Nonstop3h 54m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$269
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/211:50 pm
MCI
- PDX
1 stop8h 49m
Frontier
Fri 9/253:22 pm
PDX
- MCI
1 stop20h 00m
Frontier
Deal found 6/30![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 7/201:45 pm
MCI
- PDX
1 stop28h 46m
Frontier
Tue 7/285:16 pm
PDX
- MCI
1 stop17h 44m
Frontier
Deal found 7/3![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:10 pm
STL
- PDX
1 stop22h 25m
Frontier
Wed 10/145:35 pm
PDX
- STL
1 stop23h 40m
Frontier
Deal found 6/30![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Sat 8/2912:20 pm
PDX
- STL
1 stop28h 53m
Frontier
Deal found 7/2![Frontier logo]()
$277
This CheapOair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:32 pm
MCI
- PDX
1 stop26h 22m
Frontier
Mon 8/312:20 pm
PDX
- MCI
1 stop22h 40m
Frontier
Deal found 7/1![Frontier logo]()
$278
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 July 3, 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 July 3, 2026.
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:52 pm
STL
- PDX
1 stop6h 24m
Delta
Sat 9/196:00 am
PDX
- STL
1 stop8h 47m
Delta
Deal found 6/30![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:05 am
STL
- PDX
1 stop10h 55m
Southwest
Mon 9/710:45 pm
PDX
- STL
1 stop9h 20m
Southwest
Deal found 6/30![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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.
Tue 8/256:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Wed 8/2611:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 6/29![Alaska Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:25 am
STL
- SEA
2 stops13h 42m
United Airlines
Tue 8/1811:59 pm
SEA
- STL
1 stop8h 11m
United Airlines
Deal found 7/2![United Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:16 am
SGF
- GEG
1 stop8h 05m
American Airlines
Mon 11/22:15 pm
GEG
- SGF
1 stop6h 22m
American Airlines
Deal found 7/2![American Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/228:30 am
MCI
- PDX
1 stop6h 20m
Southwest
Sat 8/296:20 am
PDX
- MCI
2 stops8h 55m
Southwest
Deal found 7/3![Southwest logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Sat 9/1911:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 6/30![Alaska Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:22 pm
SGF
- SEA
1 stop10h 30m
Delta
Thu 10/1511:59 pm
SEA
- SGF
1 stop8h 51m
Delta
Deal found 6/30![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 6/29. 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.
Tue 7/144:50 pm
MCI
- PDX
1 stop8h 45m
Southwest
Wed 7/222:35 pm
PDX
- MCI
1 stop7h 05m
Southwest
Deal found 6/29![Southwest logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:36 pm
STL
- SEA
2 stops9h 07m
United Airlines
Wed 9/98:40 am
SEA
- STL
2 stops12h 19m
United Airlines
Deal found 7/1![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:15 am
MCI
- GEG
1 stop6h 53m
Delta
Tue 9/11:00 pm
GEG
- MCI
1 stop8h 02m
Delta
Deal found 7/1![Delta logo]()
$363
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Fri 9/252:25 pm
SGF
- GEG
1 stop8h 00m
American Airlines
Sat 10/36:00 am
GEG
- SGF
1 stop7h 38m
American Airlines
Deal found 6/28![American Airlines logo]()
$402
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:35 am
MCI
- PDX
2 stops10h 55m
Southwest
Wed 10/146:00 am
PDX
- MCI
2 stops12h 05m
Southwest
Deal found 6/29![Southwest logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 6/29. 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.
Mon 8/316:35 am
STL
- PDX
1 stop8h 35m
Alaska Airlines
Sun 9/611:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 6/29![Alaska Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:36 pm
STL
- GEG
1 stop7h 30m
Delta
Thu 7/305:10 pm
GEG
- STL
1 stop5h 31m
Delta
Deal found 7/2![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:20 am
MCI
- PDX
1 stop7h 39m
United Airlines
Wed 9/99:00 am
PDX
- MCI
2 stops12h 30m
United Airlines
Deal found 7/2![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:20 pm
STL
- PDX
2 stops9h 30m
Southwest
Tue 8/186:45 am
PDX
- STL
2 stops9h 10m
Southwest
Deal found 6/30![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:48 am
STL
- GEG
1 stop6h 09m
Delta
Tue 8/256:45 am
GEG
- STL
1 stop6h 25m
Delta
Deal found 7/2![Delta logo]()
$363
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:58 pm
MCI
- GEG
1 stop6h 01m
Alaska Airlines
Wed 8/125:07 am
GEG
- MCI
1 stop6h 14m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:30 am
SGF
- PDX
2 stops8h 35m
United Airlines
Sat 10/106:50 am
PDX
- SGF
1 stop9h 46m
United Airlines
Deal found 6/30![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:53 pm
SGF
- SEA
1 stop7h 06m
American Airlines
Tue 8/411:22 pm
SEA
- SGF
1 stop7h 38m
American Airlines
Deal found 7/2![American Airlines logo]()
$460
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 9/186:20 am
MCI
- PDX
1 stop6h 35m
Southwest
Mon 9/2112:40 pm
PDX
- MCI
2 stops9h 30m
Southwest
Deal found 7/3![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:06 am
SGF
- GEG
1 stop7h 40m
Delta
Mon 11/210:50 pm
GEG
- SGF
1 stop10h 00m
Delta
Deal found 7/1![Delta logo]()
$364
This Alaska Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 8/87:58 pm
MCI
- SEA
Nonstop4h 00m
Alaska Airlines
Sat 8/226:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Deal found 7/3![Alaska Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:30 am
SGF
- PDX
2 stops8h 35m
United Airlines
Sat 10/106:50 am
PDX
- SGF
1 stop9h 46m
United Airlines
Deal found 7/3![United Airlines logo]()
$418
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Fri 7/315:30 am
STL
- GEG
2 stops10h 32m
American Airlines
Sat 8/152:27 pm
GEG
- STL
1 stop7h 31m
American Airlines
Deal found 6/28![American Airlines logo]()
$462
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:55 am
MCI
- PDX
1 stop7h 30m
Southwest
Sun 8/96:45 am
PDX
- MCI
1 stop8h 50m
Southwest
Deal found 6/30![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:15 am
MCI
- GEG
1 stop6h 53m
Delta
Wed 9/25:30 am
GEG
- MCI
1 stop6h 38m
Delta
Deal found 7/2![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:58 pm
MCI
- SEA
Nonstop4h 00m
Alaska Airlines
Thu 8/136:42 am
SEA
- MCI
1 stop8h 11m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/284:26 pm
MCI
- PDX
2 stops10h 24m
United Airlines
Mon 8/310:40 pm
PDX
- MCI
1 stop8h 02m
United Airlines
Deal found 7/1![United Airlines logo]()
$424
Last-minute flights from Missouri to WashingtonDiscover last-minute flight deals from Missouri to Washington. Data last updated July 3, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Washington. Data last updated July 3, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:58 pm
MCI
- PDX
1 stop25h 38m
Frontier
Sat 7/1112:20 pm
PDX
- MCI
1 stop22h 40m
Frontier
Deal found 6/30![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 7/201:45 pm
MCI
- PDX
1 stop28h 46m
Frontier
Fri 7/3112:20 pm
PDX
- MCI
1 stop22h 40m
Frontier
Deal found 7/3![Frontier logo]()
$274
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 7/237:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Fri 7/315:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/3![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:32 pm
MCI
- PDX
1 stop26h 22m
Frontier
Tue 8/45:16 pm
PDX
- MCI
1 stop17h 44m
Frontier
Deal found 6/30![Frontier logo]()
$269
This CheapOair deal was found by Cheapflights users on 6/29. 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.
Thu 7/308:08 pm
STL
- PDX
1 stop22h 43m
Frontier
Tue 8/45:16 pm
PDX
- STL
1 stop24h 07m
Frontier
Deal found 6/29![Frontier logo]()
$275
This CheapOair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:32 pm
MCI
- PDX
1 stop26h 22m
Frontier
Mon 8/312:20 pm
PDX
- MCI
1 stop22h 40m
Frontier
Deal found 7/1![Frontier logo]()
$278
This CheapOair deal was found by Cheapflights users on 6/29. 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.
Thu 8/64:32 pm
MCI
- PDX
1 stop26h 22m
Frontier
Sun 8/96:49 pm
PDX
- MCI
1 stop18h 58m
Frontier
Deal found 6/29![Frontier logo]()
$260
This Frontier deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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.
Sat 8/221:38 pm
MCI
- PDX
1 stop5h 33m
Frontier
Sat 8/2912:20 pm
PDX
- MCI
1 stop22h 33m
Frontier
Deal found 7/3![Frontier logo]()
$252
This Frontier deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Sat 8/2912:20 pm
PDX
- STL
1 stop28h 53m
Frontier
Deal found 7/2![Frontier logo]()
$277
This Expedia deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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.
Thu 8/274:47 pm
MCI
- PDX
1 stop26h 34m
Multiple Airlines
Sat 9/57:03 am
PDX
- MCI
Nonstop3h 35m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Mon 8/316:17 pm
PDX
- STL
1 stop21h 33m
Frontier
Deal found 7/1![Frontier logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:17 pm
SGF
- SEA
1 stop15h 22m
Multiple Airlines
Sun 9/69:29 pm
SEA
- SGF
1 stop20h 53m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$254
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 July 3, 2026.
Search for one-way flight options from Missouri to Washington. Find affordable one-way fares based on user searches. Data last updated July 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” 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 9/16:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 7/3![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:46 pm
STL
- SEA
1 stop23h 14m
Frontier
Deal found 6/30![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 7/1![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 7/1![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 6/30![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:10 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 6/28![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:10 pm
STL
- SEA
1 stop17h 29m
Frontier
Deal found 7/1![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:10 pm
STL
- SEA
1 stop17h 29m
Frontier
Deal found 6/28![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 6/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:46 pm
STL
- PDX
1 stop9h 53m
Frontier
Deal found 6/30![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Sun 8/306:45 pm
STL
- SEA
1 stop17h 54m
Frontier
Deal found 6/30![Frontier logo]()
$120
This Priceline deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:38 pm
MCI
- PDX
1 stop5h 33m
Frontier
Deal found 7/1![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Deal found 7/1![Frontier logo]()
$126
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 July 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $254 (Kiwi.com) |
One-way from | $90 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $487 |
Good round-trip deal | $400 or less |
Good one-way deal | $258 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 July 3, 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
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 9/12
3:52 pm-8:16 pm
1 stop6h 24m
Portland
Sat 9/19
6:00 am-4:47 pm
1 stop8h 47m
$319
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Fri 9/4
6:05 am-3:00 pm
1 stop10h 55m
Portland
Mon 9/7
10:45 pm-10:05 am
1 stop9h 20m
$319
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Sat 8/22
8:30 am-12:50 pm
1 stop6h 20m
Portland
Sat 8/29
6:20 am-5:15 pm
2 stops8h 55m
$322
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Tue 7/14
4:50 pm-11:35 pm
1 stop8h 45m
Portland
Wed 7/22
2:35 pm-11:40 pm
1 stop7h 05m
$329
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Fri 10/9
6:35 am-3:30 pm
2 stops10h 55m
Portland
Wed 10/14
6:00 am-8:05 pm
2 stops12h 05m
$333
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 8/25
6:08 pm-8:20 pm
Nonstop4h 12m
Portland
Wed 8/26
11:16 am-5:10 pm
Nonstop3h 54m
$337
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 9/12
6:08 pm-8:20 pm
Nonstop4h 12m
Portland
Sat 9/19
11:16 am-5:10 pm
Nonstop3h 54m
$337
SpringfieldSeattle
SGF - SEA
SGFSEA
Springfield-Branson
Fri 10/9
3:22 pm-11:52 pm
1 stop10h 30m
Seattle/Tacoma Intl
Thu 10/15
11:59 pm-10:50 am
1 stop8h 51m
$349
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 8/12
12:20 pm-7:50 pm
2 stops9h 30m
Portland
Tue 8/18
6:45 am-5:55 pm
2 stops9h 10m
$358
Kansas CityPortland
MCI - PDX
MCIPDX
Kansas City
Fri 9/18
6:20 am-10:55 am
1 stop6h 35m
Portland
Mon 9/21
12:40 pm-12:10 am
2 stops9h 30m
$358
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-PDX
SGF-SEA
STL-PDX
STL-SEA
STL-GEG
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-PDX
SGF-SEA
STL-PDX
STL-SEA
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 $80). Flying from Missouri to State of Washington in July is currently the most expensive (average of $608). 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 July 3, 2026.
It’s typically best to fly out from Missouri to State of Washington in the evening. Doing so could potentially save you 11% on the flight price compared to flying in the morning, which is usually more expensive.
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 July 3, 2026.
The most flights from USMO to USWA are scheduled on a Friday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Missouri to State of Washington?
How far ahead should I book a flight from Missouri to State of Washington?
To ensure you get the cheapest price possible for a flight from Missouri to State of Washington, you should look to book at least 39 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 June 27, 2026.
Travelers seeking maximum savings on their Missouri to State of Washington flight should consider departing on Saturday afternoons 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.
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 July 3, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andDelta 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
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Overall
7.9
Food
7.1
Crew
8.5
Entertainment
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - 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 July 3, 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 7 airlines flying from Missouri to Washington
Discover the top 7 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 July 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$252 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$136 | Average$404 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$332 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$151 | Average$494 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$152 | Average$428 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$178 | Average$468 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$188 | Average$506 | FlexibilityNo cancel fee | On-time71% |