$60+ Cheap flights from Washington to Missouri
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Mar 6 — Mar 131
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Washington to Missouri 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to Missouri
Cheapest
Best
Last-minute
One-way
Cheapest flights from Washington to MissouriExplore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
Explore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:57 pm
SEA
- STL
1 stop9h 04m
American Airlines
Tue 3/102:06 pm
STL
- SEA
1 stop9h 00m
American Airlines
Deal found 2/3![American Airlines logo]()
$159
This American Airlines deal was found by Cheapflights users on 2/2. 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 4/2011:55 pm
SEA
- STL
1 stop6h 59m
American Airlines
Sat 4/255:21 pm
STL
- SEA
1 stop7h 17m
American Airlines
Deal found 2/2![American Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/610:08 pm
SEA
- STL
1 stop8h 27m
American Airlines
Wed 3/116:50 pm
STL
- SEA
1 stop8h 05m
American Airlines
Deal found 2/4![American Airlines logo]()
$168
This Frontier deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/2612:22 pm
GEG
- MCI
1 stop6h 07m
Frontier
Wed 3/44:39 pm
MCI
- GEG
1 stop20h 48m
Frontier
Deal found 1/31![Frontier logo]()
$168
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/173:35 pm
SEA
- STL
1 stop5h 39m
Delta
Sat 4/255:00 pm
STL
- SEA
1 stop7h 01m
Delta
Deal found 2/4![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:53 am
PDX
- MCI
Nonstop3h 29m
Alaska Airlines
Wed 3/185:50 pm
MCI
- PDX
Nonstop3h 51m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Fri 3/612:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Sun 3/86:19 pm
STL
- PDX
1 stop16h 54m
Frontier
Deal found 2/2![Frontier logo]()
$183
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/2411:57 pm
SEA
- STL
1 stop6h 58m
American Airlines
Sun 3/16:38 pm
STL
- SEA
1 stop7h 46m
American Airlines
Deal found 2/4![American Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 3/612:04 pm
PDX
- MCI
1 stop5h 51m
Frontier
Mon 3/98:38 pm
MCI
- PDX
2 stops38h 20m
Frontier
Deal found 2/3![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 2/3. 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.
Fri 3/2711:21 am
PDX
- MCI
Nonstop3h 26m
Alaska Airlines
Tue 3/315:50 pm
MCI
- PDX
Nonstop3h 51m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 2/3. 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.
Tue 3/36:30 am
PDX
- MCI
1 stop8h 15m
Southwest
Tue 3/109:05 am
MCI
- PDX
1 stop6h 35m
Southwest
Deal found 2/3![Southwest logo]()
$192
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:07 am
SEA
- STL
1 stop6h 34m
American Airlines
Sun 3/16:38 pm
STL
- SEA
1 stop7h 46m
American Airlines
Deal found 2/3![American Airlines logo]()
$193
Best flights from Washington to MissouriDiscover carefully curated flight deals from Washington to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
Discover carefully curated flight deals from Washington to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:35 pm
SEA
- STL
1 stop5h 39m
Delta
Sat 4/255:00 pm
STL
- SEA
1 stop7h 01m
Delta
Deal found 2/3![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/910:53 am
PDX
- MCI
Nonstop3h 29m
Alaska Airlines
Wed 3/185:50 pm
MCI
- PDX
Nonstop3h 51m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 2/3. 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.
Tue 3/36:30 am
PDX
- MCI
1 stop8h 15m
Southwest
Tue 3/109:05 am
MCI
- PDX
1 stop6h 35m
Southwest
Deal found 2/3![Southwest logo]()
$192
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Wed 3/2511:59 pm
SEA
- MCI
1 stop9h 53m
United Airlines
Fri 3/276:00 am
MCI
- SEA
1 stop5h 49m
United Airlines
Deal found 2/3![United Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:15 pm
GEG
- MCI
2 stops16h 39m
Multiple Airlines
Wed 3/44:39 pm
MCI
- GEG
1 stop20h 48m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$233
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/312:25 pm
GEG
- STL
1 stop6h 47m
American Airlines
Thu 3/56:00 am
STL
- GEG
1 stop7h 44m
American Airlines
Deal found 2/2![American Airlines logo]()
$264
This Delta deal was found by Cheapflights users on 2/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:35 am
SEA
- STL
1 stop5h 48m
Delta
Thu 4/236:45 pm
STL
- SEA
1 stop7h 14m
Delta
Deal found 2/3![Delta logo]()
$177
This Delta deal was found by Cheapflights users on 2/1. 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.
Sat 2/216:10 am
SEA
- STL
1 stop6h 44m
Delta
Sat 2/283:40 pm
STL
- SEA
1 stop7h 06m
Delta
Deal found 2/1![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:30 am
PDX
- MCI
1 stop9h 00m
Southwest
Tue 5/123:30 pm
MCI
- PDX
1 stop9h 40m
Southwest
Deal found 2/2![Southwest logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/110:53 am
PDX
- MCI
Nonstop3h 29m
Alaska Airlines
Sun 3/85:16 pm
MCI
- PDX
Nonstop4h 04m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/173:35 pm
SEA
- STL
1 stop5h 39m
Delta
Thu 4/236:45 pm
STL
- SEA
1 stop7h 14m
Delta
Deal found 2/4![Delta logo]()
$177
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/285:00 am
SEA
- MCI
1 stop5h 44m
United Airlines
Sat 3/71:15 pm
MCI
- SEA
1 stop7h 48m
United Airlines
Deal found 2/4![United Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/266:07 pm
SEA
- STL
Nonstop3h 52m
Alaska Airlines
Sat 2/282:47 pm
STL
- SEA
Nonstop4h 39m
Alaska Airlines
Deal found 1/31![Alaska Airlines logo]()
$207
This Southwest deal was found by Cheapflights users on 2/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:20 am
PDX
- MCI
1 stop4h 55m
Southwest
Fri 2/276:45 pm
MCI
- PDX
1 stop7h 20m
Southwest
Deal found 2/2![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 2/1. 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 3/254:55 pm
SEA
- STL
1 stop5h 26m
Delta
Sun 3/296:12 pm
STL
- SEA
1 stop7h 51m
Delta
Deal found 2/1![Delta logo]()
$177
This United Airlines deal was found by Cheapflights users on 2/1. 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 5/28:51 am
SEA
- MCI
1 stop5h 24m
United Airlines
Sat 5/91:50 pm
MCI
- SEA
2 stops9h 16m
United Airlines
Deal found 2/1![United Airlines logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:55 am
SEA
- MCI
Nonstop3h 34m
Alaska Airlines
Sun 3/296:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sat 5/23:40 pm
SEA
- MCI
1 stop6h 12m
United Airlines
Tue 5/51:50 pm
MCI
- SEA
2 stops9h 16m
United Airlines
Deal found 2/3![United Airlines logo]()
$222
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:22 pm
GEG
- MCI
1 stop6h 07m
Multiple Airlines
Sun 3/15:16 pm
MCI
- GEG
1 stop7h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 2/1. 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.
Tue 3/101:10 pm
PDX
- MCI
1 stop8h 46m
Delta
Wed 3/183:45 pm
MCI
- PDX
1 stop6h 40m
Delta
Deal found 2/1![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/206:02 pm
SEA
- STL
Nonstop3h 57m
Alaska Airlines
Tue 4/287:00 am
STL
- SEA
Nonstop4h 32m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/39:00 am
SEA
- MCI
1 stop5h 19m
United Airlines
Tue 3/109:15 am
MCI
- SEA
2 stops10h 49m
United Airlines
Deal found 2/3![United Airlines logo]()
$222
This Southwest deal was found by Cheapflights users on 2/3. 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.
Mon 2/236:35 am
SEA
- STL
1 stop7h 20m
Southwest
Tue 3/32:20 pm
STL
- SEA
2 stops10h 10m
Southwest
Deal found 2/3![Southwest logo]()
$253
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 3/1211:59 pm
GEG
- SGF
1 stop8h 10m
American Airlines
Thu 3/197:46 pm
SGF
- GEG
1 stop6h 37m
American Airlines
Deal found 2/2![American Airlines logo]()
$314
This Delta deal was found by Cheapflights users on 2/1. 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 4/223:30 pm
PDX
- MCI
1 stop6h 13m
Delta
Tue 4/287:05 am
MCI
- PDX
1 stop7h 01m
Delta
Deal found 2/1![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/236:21 pm
SEA
- MCI
Nonstop3h 38m
Alaska Airlines
Mon 4/277:00 am
MCI
- SEA
Nonstop4h 03m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sat 5/22:24 pm
PDX
- STL
1 stop6h 35m
United Airlines
Wed 5/65:59 pm
STL
- PDX
1 stop6h 55m
United Airlines
Deal found 2/3![United Airlines logo]()
$232
This Southwest deal was found by Cheapflights users on 2/3. 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.
Tue 3/310:50 am
GEG
- MCI
2 stops9h 25m
Southwest
Sat 3/78:05 pm
MCI
- GEG
1 stop7h 00m
Southwest
Deal found 2/3![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 2/1. 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.
Sat 3/73:59 pm
PDX
- MCI
1 stop5h 51m
Delta
Wed 3/188:11 pm
MCI
- PDX
1 stop5h 43m
Delta
Deal found 2/1![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Fri 3/276:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Fri 4/36:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$227
Last-minute flights from Washington to MissouriDiscover last-minute flight deals from Washington to Missouri. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Missouri. Data last updated February 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 2/2411:57 pm
SEA
- STL
1 stop6h 58m
American Airlines
Sun 3/16:38 pm
STL
- SEA
1 stop7h 46m
American Airlines
Deal found 2/4![American Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:07 am
SEA
- STL
1 stop6h 34m
American Airlines
Sun 3/16:38 pm
STL
- SEA
1 stop7h 46m
American Airlines
Deal found 2/3![American Airlines logo]()
$193
This Frontier deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/2612:22 pm
GEG
- MCI
1 stop6h 07m
Frontier
Wed 3/44:39 pm
MCI
- GEG
1 stop20h 48m
Frontier
Deal found 1/31![Frontier logo]()
$168
This American Airlines deal was found by Cheapflights users on 2/2. 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 3/212:59 am
SEA
- STL
1 stop8h 02m
American Airlines
Tue 3/106:37 pm
STL
- SEA
1 stop7h 47m
American Airlines
Deal found 2/2![American Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 2/3. 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.
Tue 3/36:30 am
PDX
- MCI
1 stop8h 15m
Southwest
Tue 3/109:05 am
MCI
- PDX
1 stop6h 35m
Southwest
Deal found 2/3![Southwest logo]()
$192
This CheapOair deal was found by Cheapflights users on 2/3. 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.
Tue 3/37:55 am
SEA
- STL
Nonstop3h 56m
Alaska Airlines
Tue 3/107:00 am
STL
- SEA
Nonstop4h 42m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$197
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/610:08 pm
SEA
- STL
1 stop8h 27m
American Airlines
Wed 3/116:50 pm
STL
- SEA
1 stop8h 05m
American Airlines
Deal found 2/4![American Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Fri 3/612:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Sun 3/86:19 pm
STL
- PDX
1 stop16h 54m
Frontier
Deal found 2/2![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 3/612:04 pm
PDX
- MCI
1 stop5h 51m
Frontier
Mon 3/98:38 pm
MCI
- PDX
2 stops38h 20m
Frontier
Deal found 2/3![Frontier logo]()
$185
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1010:53 am
PDX
- MCI
Nonstop3h 29m
Alaska Airlines
Tue 3/175:16 pm
MCI
- PDX
Nonstop4h 04m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/266:00 am
SEA
- STL
1 stop8h 32m
Delta
Mon 3/302:12 pm
STL
- SEA
1 stop6h 18m
Delta
Deal found 2/4![Delta logo]()
$177
This CheapOair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2711:21 am
PDX
- MCI
Nonstop3h 26m
Alaska Airlines
Tue 3/315:50 pm
MCI
- PDX
Nonstop3h 51m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$187
One-way flights from Washington to MissouriSearch for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
Search for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 3/612:24 pm
SEA
- MCI
1 stop29h 31m
Frontier
Deal found 2/3![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/612:24 pm
SEA
- STL
1 stop19h 25m
Frontier
Deal found 2/4![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 3/612:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/4![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Thu 2/261:16 pm
SEA
- MCI
1 stop5h 13m
Frontier
Deal found 2/3![Frontier logo]()
$73
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:30 pm
SEA
- MCI
1 stop5h 18m
Frontier
Deal found 2/1![Frontier logo]()
$74
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/1![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Thu 3/51:16 pm
SEA
- MCI
1 stop28h 39m
Frontier
Deal found 2/3![Frontier logo]()
$77
This American Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 3/36:44 am
SEA
- STL
1 stop6h 44m
American Airlines
Deal found 2/2![American Airlines logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Wed 4/291:48 pm
PDX
- MCI
1 stop21h 42m
Frontier
Deal found 2/3![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Fri 3/1312:24 pm
SEA
- MCI
1 stop29h 31m
Frontier
Deal found 2/3![Frontier logo]()
$89
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” 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 4/304:36 pm
SEA
- STL
1 stop5h 49m
Delta
Deal found 2/4![Delta logo]()
$89
This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 3/310:53 am
PDX
- MCI
Nonstop3h 29m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$89
Find flight deals from Washington to Missouri
Keep the following information in mind while searching for Washington to Missouri flight deals. Data was last updated February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $159 (American Airlines) |
One-way from | $60 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $340 |
Good round-trip deal | $199 or less |
Good one-way deal | $174 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Washington to Missouri that are best for you.
Fly from
Washington
Fly to
Missouri
Route
Depart
Return
Price
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Fri 4/17
3:35 pm-11:14 pm
1 stop5h 39m
Lambert-St Louis
Sat 4/25
5:00 pm-10:01 pm
1 stop7h 01m
$177
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Tue 4/21
5:35 am-1:23 pm
1 stop5h 48m
Lambert-St Louis
Thu 4/23
6:45 pm-11:59 pm
1 stop7h 14m
$177
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Sat 2/21
6:10 am-2:54 pm
1 stop6h 44m
Lambert-St Louis
Sat 2/28
3:40 pm-8:46 pm
1 stop7h 06m
$177
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Fri 4/17
3:35 pm-11:14 pm
1 stop5h 39m
Lambert-St Louis
Thu 4/23
6:45 pm-11:59 pm
1 stop7h 14m
$177
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Wed 3/25
4:55 pm-12:21 am
1 stop5h 26m
Lambert-St Louis
Sun 3/29
6:12 pm-12:03 am
1 stop7h 51m
$177
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Mon 3/9
10:53 am-4:22 pm
Nonstop3h 29m
Kansas City
Wed 3/18
5:50 pm-7:41 pm
Nonstop3h 51m
$187
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Tue 3/3
6:30 am-4:45 pm
1 stop8h 15m
Kansas City
Tue 3/10
9:05 am-1:40 pm
1 stop6h 35m
$192
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Tue 5/5
6:30 am-5:30 pm
1 stop9h 00m
Kansas City
Tue 5/12
3:30 pm-11:10 pm
1 stop9h 40m
$197
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sun 3/1
10:53 am-4:22 pm
Nonstop3h 29m
Kansas City
Sun 3/8
5:16 pm-7:20 pm
Nonstop4h 04m
$197
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Tue 3/10
1:10 pm-11:56 pm
1 stop8h 46m
Kansas City
Wed 3/18
3:45 pm-8:25 pm
1 stop6h 40m
$197
Showing 1-10 of 60 results
Best time to book a flight from Washington to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Washington with our price prediction graph.
SEA-STL
GEG-MCI
PDX-MCI
PDX-STL
SEA-MCI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Missouri
USWA-USMO
SEA-STL
GEG-MCI
PDX-MCI
PDX-STL
What is the cheapest month to book a flight from State of Washington to Missouri?
Currently, December is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $145). Flying from State of Washington to Missouri in March is currently the most expensive (average of $204). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WA to MO?
Find hourly flight availability from Washington to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2026.
When flying from State of Washington to Missouri, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Missouri
Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated February 4, 2026.
Read through reviews of airlines operating flights from Washington to Missouri, such as Alaska Airlines, Delta, and Hawaiian Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Comfort
7.8
Boarding
8.1
Food
7.1
Overall
8.0
Crew
8.5
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Related info for your journey
Find useful and relevant information for your journey from Washington to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Washington to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Missouri by cabin class
Find flights from Washington to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Missouri flights
Browse other Washington and Missouri flight options. Last updated on February 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Missouri
Find the right flight back to Washington after your stay in Missouri
Washington to Missouri flights
Consider these flights traveling from Washington to Missouri.
Top 8 airlines flying from Washington to Missouri
Discover the top 8 airlines that operate flights from Washington to Missouri. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$379 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$121 | Average$254 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$374 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$473 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$168 | Average$285 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$182 | Average$411 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$489 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$212 | Average$453 | FlexibilityNo cancel fee | On-time75% |