$73+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
Sep 19 — Sep 261
Round-trip
1 adult, Economy
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Find cheap flights from Missouri to Washington with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 August 20, 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 August 20, 2026.
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop25h 19m
Sat 9/1212:24 pm -
1 stop20h 53m
Deal found 8/18![Frontier logo]()
$240
This Trip.com deal was found by Cheapflights users on 8/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop25h 19m
Fri 9/1112:38 pm -
1 stop28h 39m
Deal found 8/16![Frontier logo]()
$252
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:45 pm -
1 stop20h 07m
Sat 9/1212:24 pm -
1 stop20h 53m
Deal found 8/17![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Mon 10/198:00 pm -
1 stop21h 12m
Wed 10/2811:06 am -
2 stops30h 09m
Deal found 8/18![Frontier logo]()
$260
This Kissandfly.com deal was found by Cheapflights users on 8/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:27 pm -
1 stop23h 15m
Sat 10/36:00 am -
1 stop7h 14m
Deal found 8/19![Frontier logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Tue 9/1512:17 pm -
1 stop23h 25m
Tue 9/2210:57 am -
1 stop22h 35m
Deal found 8/17![Frontier logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Wed 9/98:10 pm -
1 stop17h 33m
Mon 9/1412:39 pm -
1 stop20h 53m
Deal found 8/18![Frontier logo]()
$267
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:19 pm -
Nonstop4h 22m
Thu 9/1712:35 pm -
Nonstop4h 03m
Deal found 8/19![Alaska Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 9/1512:17 pm -
1 stop23h 25m
Tue 9/298:15 pm -
2 stops21h 02m
Deal found 8/18![Frontier logo]()
$271
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Wed 9/2312:17 pm -
1 stop25h 19m
Sun 10/1112:11 pm -
1 stop22h 24m
Deal found 8/15![Frontier logo]()
$272
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:36 pm -
2 stops9h 07m
Wed 9/307:00 am -
1 stop6h 43m
Deal found 8/19![United Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sat 9/268:10 pm -
1 stop20h 58m
Tue 9/298:15 pm -
2 stops21h 02m
Deal found 8/17![Frontier logo]()
$273
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 August 20, 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 August 20, 2026.
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:20 am -
2 stops9h 15m
Sat 10/316:15 am -
2 stops7h 55m
Deal found 8/16![Southwest logo]()
$298
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 10/176:17 am -
Nonstop4h 03m
Wed 10/288:40 am -
1 stop6h 38m
Deal found 8/18![Alaska Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 10/22:25 pm -
1 stop8h 00m
Tue 10/62:08 pm -
1 stop6h 34m
Deal found 8/17![American Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Thu 11/58:00 am -
1 stop10h 27m
Sun 11/85:05 am -
2 stops8h 38m
Deal found 8/16![United Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 8/18. 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.
Sat 10/37:24 am -
Nonstop3h 51m
Mon 10/125:55 pm -
Nonstop3h 36m
Deal found 8/18![Delta logo]()
$337
This Southwest deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:35 am -
2 stops9h 25m
Thu 10/155:20 am -
1 stop5h 55m
Deal found 8/18![Southwest logo]()
$322
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Wed 11/117:30 am -
2 stops13h 47m
Sun 11/155:05 am -
1 stop5h 33m
Deal found 8/17![United Airlines logo]()
$332
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:45 pm -
1 stop10h 22m
Mon 9/1411:08 pm -
1 stop9h 00m
Deal found 8/14![American Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 8/19. 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.
Sun 9/611:38 am -
1 stop9h 17m
Fri 9/1111:49 am -
1 stop8h 19m
Deal found 8/19![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:40 am -
2 stops13h 16m
Mon 11/1610:40 am -
1 stop9h 35m
Deal found 8/15![United Airlines logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 11/147:00 am -
1 stop6h 30m
Wed 11/188:22 am -
1 stop6h 51m
Deal found 8/18![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 8/19. 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.
Fri 9/187:24 am -
Nonstop3h 51m
Fri 9/255:40 pm -
Nonstop3h 36m
Deal found 8/19![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 8/19. 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.
Sat 9/198:25 am -
2 stops11h 20m
Tue 9/227:50 am -
2 stops8h 55m
Deal found 8/19![Southwest logo]()
$347
This American Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Tue 9/154:51 pm -
1 stop7h 01m
Mon 9/2111:57 pm -
1 stop7h 59m
Deal found 8/15![American Airlines logo]()
$348
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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.
Wed 10/76:17 am -
1 stop9h 07m
Mon 10/1211:55 am -
Nonstop3h 23m
Deal found 8/17![Alaska Airlines logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 11/299:48 pm -
1 stop6h 20m
Sat 12/510:59 pm -
1 stop7h 49m
Deal found 8/15![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/143:45 pm -
1 stop6h 45m
Fri 11/2012:15 am -
1 stop6h 25m
Deal found 8/18![Southwest logo]()
$347
This Delta deal was found by Cheapflights users on 8/17. 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.
Wed 10/74:03 pm -
1 stop8h 16m
Mon 10/123:31 pm -
1 stop6h 00m
Deal found 8/17![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/19. 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.
Wed 10/216:00 am -
1 stop7h 50m
Tue 10/271:00 pm -
1 stop7h 19m
Deal found 8/19![Delta logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:52 pm -
1 stop8h 02m
Sun 11/811:53 am -
Nonstop3h 20m
Deal found 8/15![Alaska Airlines logo]()
$387
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/217:20 am -
2 stops8h 05m
Sat 1/237:00 am -
2 stops7h 55m
Deal found 8/15![Southwest logo]()
$354
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/156:15 am -
2 stops10h 09m
Mon 9/2111:00 pm -
1 stop9h 39m
Deal found 8/15![United Airlines logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 8/17. 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.
Thu 11/197:00 am -
1 stop6h 10m
Mon 11/2312:00 pm -
Nonstop3h 19m
Deal found 8/17![Alaska Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/167:59 am -
1 stop6h 52m
Sat 9/196:30 am -
2 stops10h 10m
Deal found 8/18![American Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:40 pm -
1 stop6h 55m
Fri 10/303:55 pm -
2 stops7h 25m
Deal found 8/19![Southwest logo]()
$356
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 10/247:00 am -
Nonstop4h 04m
Mon 10/2610:35 pm -
1 stop8h 54m
Deal found 8/14![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/56:00 am -
1 stop7h 38m
Sat 9/121:37 pm -
1 stop7h 53m
Deal found 8/15![United Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 am -
Nonstop4h 38m
Sun 11/156:07 pm -
Nonstop3h 52m
Deal found 8/15![Alaska Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 8/17. 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.
Sat 11/144:00 pm -
1 stop9h 59m
Sun 11/156:00 am -
1 stop8h 52m
Deal found 8/17![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 8/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:35 am -
2 stops8h 10m
Tue 9/810:45 pm -
1 stop11h 05m
Deal found 8/16![Southwest logo]()
$364
Last-minute flights from Missouri to WashingtonDiscover last-minute flight deals from Missouri to Washington. Data last updated August 20, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Washington. Data last updated August 20, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:45 pm -
1 stop20h 07m
Sat 9/1212:24 pm -
1 stop20h 53m
Deal found 8/17![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 8/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop25h 19m
Sat 9/1212:24 pm -
1 stop20h 53m
Deal found 8/18![Frontier logo]()
$240
This Trip.com deal was found by Cheapflights users on 8/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
1 stop25h 19m
Fri 9/1112:38 pm -
1 stop28h 39m
Deal found 8/16![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Wed 9/98:10 pm -
1 stop17h 33m
Mon 9/1412:39 pm -
1 stop20h 53m
Deal found 8/18![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:17 pm -
1 stop8h 11m
Mon 9/149:45 pm -
1 stop11h 47m
Deal found 8/15![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Tue 9/1512:17 pm -
1 stop23h 25m
Tue 9/2210:57 am -
1 stop22h 35m
Deal found 8/17![Frontier logo]()
$266
This Priceline deal was found by Cheapflights users on 8/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:19 pm -
Nonstop4h 22m
Thu 9/1712:35 pm -
Nonstop4h 03m
Deal found 8/19![Alaska Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Tue 9/1512:17 pm -
1 stop23h 25m
Tue 9/298:15 pm -
2 stops21h 02m
Deal found 8/18![Frontier logo]()
$271
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:36 pm -
2 stops9h 07m
Wed 9/307:00 am -
1 stop6h 43m
Deal found 8/19![United Airlines logo]()
$272
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Wed 9/2312:17 pm -
1 stop25h 19m
Sun 10/1112:11 pm -
1 stop22h 24m
Deal found 8/15![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sat 9/268:10 pm -
1 stop20h 58m
Tue 9/298:15 pm -
2 stops21h 02m
Deal found 8/17![Frontier logo]()
$273
This Kissandfly.com deal was found by Cheapflights users on 8/19. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:27 pm -
1 stop23h 15m
Sat 10/36:00 am -
1 stop7h 14m
Deal found 8/19![Frontier logo]()
$262
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 August 20, 2026.
Search for one-way flight options from Missouri to Washington. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Tue 11/102:17 pm -
1 stop21h 34m
Deal found 8/15![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/298:32 pm -
1 stop20h 36m
Deal found 8/14![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 9/288:32 pm -
1 stop20h 36m
Deal found 8/14![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:17 pm -
1 stop21h 34m
Deal found 8/15![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Tue 11/172:17 pm -
1 stop21h 34m
Deal found 8/15![Frontier logo]()
$85
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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.
Wed 10/218:43 pm -
1 stop20h 29m
Deal found 8/15![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:35 am -
2 stops49h 16m
Deal found 8/15![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” 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 11/62:17 pm -
1 stop21h 34m
Deal found 8/14![Frontier logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:43 pm -
1 stop20h 29m
Deal found 8/14![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:43 pm -
1 stop20h 29m
Deal found 8/15![Frontier logo]()
$104
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:50 am -
1 stop7h 00m
Deal found 8/15![Southwest logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:43 pm -
1 stop20h 29m
Deal found 8/14![Frontier logo]()
$106
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 August 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $240 (CheapOair) |
One-way from | $73 (Trip.com) |
Popular in | July |
Cheapest in | February |
Average price | $397 |
Good round-trip deal | $396 or less |
Good one-way deal | $273 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 7,457,451 searches. Data last updated August 20, 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. LouisSeattle
STL Lambert-St Louis - SEA Seattle/Tacoma Intl
STLSEA
Lambert-St Louis
Wed 10/28
6:20 am-1:35 pm
2 stops9h 15m
Seattle/Tacoma Intl
Sat 10/31
6:15 am-4:10 pm
2 stops7h 55m
$298
Kansas CityPortland
MCI Kansas City - PDX Portland
MCIPDX
Kansas City
Sat 10/10
6:35 am-2:00 pm
2 stops9h 25m
Portland
Thu 10/15
5:20 am-1:15 pm
1 stop5h 55m
$322
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Sat 10/17
6:17 am-8:20 am
Nonstop4h 03m
Seattle/Tacoma Intl
Wed 10/28
8:40 am-5:18 pm
1 stop6h 38m
$327
SpringfieldSpokane
SGF Springfield-Branson - GEG Spokane
SGFGEG
Springfield-Branson
Fri 10/2
2:25 pm-8:25 pm
1 stop8h 00m
Spokane
Tue 10/6
2:08 pm-10:42 pm
1 stop6h 34m
$330
St. LouisSeattle
STL Lambert-St Louis - SEA Seattle/Tacoma Intl
STLSEA
Lambert-St Louis
Thu 11/5
8:00 am-4:27 pm
1 stop10h 27m
Seattle/Tacoma Intl
Sun 11/8
5:05 am-3:43 pm
2 stops8h 38m
$332
St. LouisSeattle
STL Lambert-St Louis - SEA Seattle/Tacoma Intl
STLSEA
Lambert-St Louis
Wed 11/11
7:30 am-7:17 pm
2 stops13h 47m
Seattle/Tacoma Intl
Sun 11/15
5:05 am-12:38 pm
1 stop5h 33m
$332
St. LouisSeattle
STL Lambert-St Louis - SEA Seattle/Tacoma Intl
STLSEA
Lambert-St Louis
Thu 11/12
9:40 am-8:56 pm
2 stops13h 16m
Seattle/Tacoma Intl
Mon 11/16
10:40 am-10:15 pm
1 stop9h 35m
$332
Quickest round-trip
Kansas CitySeattle
MCI Kansas City - SEA Seattle/Tacoma Intl
MCISEA
Kansas City
Sat 10/3
7:24 am-9:15 am
Nonstop3h 51m
Seattle/Tacoma Intl
Mon 10/12
5:55 pm-11:31 pm
Nonstop3h 36m
$337
SpringfieldPortland
SGF Springfield-Branson - PDX Portland
SGFPDX
Springfield-Branson
Wed 9/9
3:45 pm-12:07 am
1 stop10h 22m
Portland
Mon 9/14
11:08 pm-10:08 am
1 stop9h 00m
$341
SpringfieldPortland
SGF Springfield-Branson - PDX Portland
SGFPDX
Springfield-Branson
Sun 9/6
11:38 am-6:55 pm
1 stop9h 17m
Portland
Fri 9/11
11:49 am-10:08 pm
1 stop8h 19m
$341
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.
STL-SEA
MCI-SEA
SGF-GEG
MCI-PDX
SGF-PDX
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
STL-SEA
MCI-SEA
SGF-GEG
MCI-PDX
What is the cheapest month to book a flight from Missouri to State of Washington?
Currently, February is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $265). Flying from Missouri to State of Washington in July is currently the most expensive (average of $512). 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 August 20, 2026.
It’s typically best to fly out from Missouri to State of Washington in the evening. Doing so could potentially save you 12% on the flight price compared to flying at noon, which is usually more expensive.
How much does it cost to fly round-trip from Missouri to State of Washington?
Airfare is below average for this route at the moment.
Missouri to State of Washington flights typically cost between $333 and $502 in October.The cheapest round-trip price found within the last 5 days was $260 on Frontier (Oct 19-Oct 28).
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 August 15, 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 August 20, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, 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.
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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
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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 August 20, 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 7,457,451 searches. Data last updated August 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$277 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$134 | Average$412 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$328 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$152 | Average$427 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$191 | Average$480 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$193 | Average$461 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$199 | Average$475 | FlexibilityNo cancel fee | On-time75% |