$66+ Cheap flights from Washington to Missouri
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STL
Apr 7 — Apr 141
Round-trip
1 adult, Economy
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Cheapest flights from Washington to MissouriExplore the most affordable flight options available from Washington to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 8, 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 March 8, 2026.
This Trip.com deal was found by Cheapflights users on 3/3. 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.
Mon 3/306:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Mon 4/66:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Deal found 3/3![Alaska Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/75:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Tue 4/147:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/7![Delta logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 5/17:12 pm
SEA
- MCI
1 stop16h 54m
Frontier
Sat 5/162:51 pm
MCI
- SEA
1 stop20h 36m
Frontier
Deal found 3/5![Frontier logo]()
$166
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/95:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Mon 4/137:59 pm
MCI
- SEA
1 stop6h 00m
Delta
Deal found 3/6![Delta logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/74:20 pm
SEA
- MCI
1 stop19h 10m
Frontier
Mon 5/112:15 pm
MCI
- SEA
1 stop21h 12m
Frontier
Deal found 3/6![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1011:58 am
PDX
- STL
1 stop19h 50m
Frontier
Mon 4/138:19 pm
STL
- PDX
1 stop18h 43m
Frontier
Deal found 3/6![Frontier logo]()
$177
This Delta deal was found by Cheapflights users on 3/3. 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 4/176:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Tue 4/217:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/3![Delta logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Thu 4/3011:58 am
PDX
- STL
1 stop29h 23m
Frontier
Mon 5/48:17 pm
STL
- PDX
1 stop18h 45m
Frontier
Deal found 3/4![Frontier logo]()
$179
This Southwest deal was found by Cheapflights users on 3/3. 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 4/175:15 am
SEA
- MCI
1 stop6h 10m
Southwest
Tue 4/214:25 pm
MCI
- SEA
2 stops9h 10m
Southwest
Deal found 3/3![Southwest logo]()
$184
This CheapOair deal was found by Cheapflights users on 3/3. 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 3/276:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Tue 3/312:23 pm
MCI
- SEA
Nonstop4h 06m
Alaska Airlines
Deal found 3/3![Alaska Airlines logo]()
$188
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:30 am
SEA
- MCI
2 stops13h 35m
Southwest
Mon 4/207:05 pm
MCI
- SEA
1 stop7h 00m
Southwest
Deal found 3/4![Southwest logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Mon 4/139:34 pm
SEA
- MCI
1 stop17h 35m
Multiple Airlines
Thu 4/162:15 pm
MCI
- SEA
1 stop21h 37m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$196
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 March 8, 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 March 8, 2026.
This Southwest deal was found by Cheapflights users on 3/3. 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 4/611:55 pm
SEA
- MCI
1 stop7h 20m
Southwest
Mon 4/275:55 pm
MCI
- SEA
1 stop7h 35m
Southwest
Deal found 3/3![Southwest logo]()
$179
This Delta deal was found by Cheapflights users on 3/3. 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 5/16:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Mon 5/412:25 pm
MCI
- SEA
1 stop8h 29m
Delta
Deal found 3/3![Delta logo]()
$198
This United Airlines deal was found by Cheapflights users on 3/4. 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.
Sun 4/1211:59 pm
SEA
- MCI
1 stop6h 53m
United Airlines
Fri 4/177:00 pm
MCI
- SEA
1 stop7h 34m
United Airlines
Deal found 3/4![United Airlines logo]()
$239
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 5/2010:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Fri 5/295:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$243
This American Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/2211:47 pm
PDX
- SGF
1 stop8h 04m
American Airlines
Thu 4/306:05 pm
SGF
- PDX
1 stop7h 52m
American Airlines
Deal found 3/7![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/711:45 pm
SEA
- MCI
1 stop7h 30m
Southwest
Tue 4/143:40 pm
MCI
- SEA
2 stops9h 15m
Southwest
Deal found 3/7![Southwest logo]()
$184
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/226:00 am
PDX
- STL
1 stop6h 29m
Delta
Wed 4/292:20 pm
STL
- PDX
1 stop5h 48m
Delta
Deal found 3/6![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/113:48 pm
SEA
- MCI
1 stop5h 44m
United Airlines
Mon 4/207:00 pm
MCI
- SEA
1 stop7h 34m
United Airlines
Deal found 3/6![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/176:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Sun 4/197:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/7![Delta logo]()
$218
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/251:52 pm
PDX
- MCI
1 stop8h 07m
Alaska Airlines
Wed 4/295:11 pm
MCI
- PDX
Nonstop3h 52m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1811:55 pm
SEA
- STL
1 stop7h 35m
Southwest
Sun 4/264:40 pm
STL
- SEA
1 stop9h 30m
Southwest
Deal found 3/6![Southwest logo]()
$229
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/2210:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Tue 5/265:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$249
This United Airlines deal was found by Cheapflights users on 3/3. 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.
Thu 4/27:14 pm
PDX
- STL
1 stop8h 36m
United Airlines
Wed 4/86:05 pm
STL
- PDX
1 stop6h 49m
United Airlines
Deal found 3/3![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/251:32 pm
PDX
- MCI
1 stop8h 11m
Delta
Sat 5/27:06 am
MCI
- PDX
2 stops11h 55m
Delta
Deal found 3/6![Delta logo]()
$232
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:40 am
SEA
- STL
2 stops8h 25m
Southwest
Tue 4/216:30 pm
STL
- SEA
1 stop7h 25m
Southwest
Deal found 3/4![Southwest logo]()
$234
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/26:40 am
SEA
- STL
2 stops9h 30m
Southwest
Fri 5/156:00 pm
STL
- SEA
1 stop8h 55m
Southwest
Deal found 3/7![Southwest logo]()
$234
This United Airlines deal was found by Cheapflights users on 3/3. 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.
Thu 5/72:41 pm
PDX
- STL
1 stop6h 04m
United Airlines
Sun 5/107:09 pm
STL
- PDX
1 stop6h 46m
United Airlines
Deal found 3/3![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 3/3. 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.
Mon 4/65:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Mon 4/277:06 am
MCI
- SEA
1 stop9h 45m
Delta
Deal found 3/3![Delta logo]()
$248
This Alaska Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/281:52 pm
PDX
- MCI
1 stop8h 07m
Alaska Airlines
Wed 4/292:58 pm
MCI
- PDX
1 stop6h 36m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/26:40 am
SEA
- STL
2 stops9h 30m
Southwest
Sun 5/38:25 am
STL
- SEA
1 stop8h 20m
Southwest
Deal found 3/7![Southwest logo]()
$234
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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.
Fri 5/82:41 pm
PDX
- MCI
1 stop6h 50m
United Airlines
Tue 5/125:17 pm
MCI
- PDX
1 stop5h 52m
United Airlines
Deal found 3/6![United Airlines logo]()
$273
This Delta deal was found by Cheapflights users on 3/3. 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.
Thu 4/25:45 am
PDX
- STL
1 stop5h 32m
Delta
Tue 4/73:05 pm
STL
- PDX
1 stop7h 20m
Delta
Deal found 3/3![Delta logo]()
$253
This Alaska Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” 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 6/310:45 am
PDX
- STL
1 stop6h 00m
Alaska Airlines
Tue 6/95:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$298
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/15:02 pm
PDX
- MCI
1 stop5h 44m
Delta
Sat 4/44:02 pm
MCI
- PDX
2 stops8h 17m
Delta
Deal found 3/5![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/2911:35 am
SEA
- MCI
2 stops8h 50m
Southwest
Tue 5/53:40 pm
MCI
- SEA
2 stops9h 15m
Southwest
Deal found 3/7![Southwest logo]()
$278
This Alaska Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/288:45 am
SEA
- STL
1 stop5h 52m
Alaska Airlines
Mon 6/17:41 pm
STL
- SEA
Nonstop4h 31m
Alaska Airlines
Deal found 3/6![Alaska Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/286:30 am
SEA
- STL
2 stops12h 13m
United Airlines
Mon 6/17:23 pm
STL
- SEA
1 stop8h 06m
United Airlines
Deal found 3/6![United Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 6/31:40 pm
PDX
- STL
1 stop8h 50m
Delta
Tue 6/96:59 pm
STL
- PDX
1 stop6h 42m
Delta
Deal found 3/5![Delta logo]()
$269
This Alaska Airlines deal was found by Cheapflights users on 3/3. 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 6/1211:30 am
PDX
- MCI
Nonstop3h 26m
Alaska Airlines
Mon 6/155:50 pm
MCI
- PDX
Nonstop3h 58m
Alaska Airlines
Deal found 3/3![Alaska Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 3/255:30 am
SEA
- MCI
1 stop8h 45m
Southwest
Tue 3/316:15 pm
MCI
- SEA
1 stop7h 40m
Southwest
Deal found 3/6![Southwest logo]()
$288
Last-minute flights from Washington to MissouriDiscover last-minute flight deals from Washington to Missouri. Data last updated March 8, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Missouri. Data last updated March 8, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 3/3. 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 3/276:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Tue 3/312:23 pm
MCI
- SEA
Nonstop4h 06m
Alaska Airlines
Deal found 3/3![Alaska Airlines logo]()
$188
This Delta deal was found by Cheapflights users on 3/3. 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 3/275:30 am
SEA
- MCI
1 stop6h 08m
Delta
Tue 3/317:55 am
MCI
- SEA
Nonstop4h 05m
Delta
Deal found 3/3![Delta logo]()
$198
This Trip.com deal was found by Cheapflights users on 3/3. 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.
Mon 3/306:27 pm
SEA
- MCI
Nonstop3h 32m
Alaska Airlines
Mon 4/66:15 am
MCI
- SEA
Nonstop4h 09m
Alaska Airlines
Deal found 3/3![Alaska Airlines logo]()
$152
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/75:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Tue 4/147:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/7![Delta logo]()
$159
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/95:50 pm
SEA
- MCI
Nonstop3h 26m
Delta
Mon 4/137:59 pm
MCI
- SEA
1 stop6h 00m
Delta
Deal found 3/6![Delta logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1011:58 am
PDX
- STL
1 stop19h 50m
Frontier
Mon 4/138:19 pm
STL
- PDX
1 stop18h 43m
Frontier
Deal found 3/6![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Mon 4/139:34 pm
SEA
- MCI
1 stop17h 35m
Multiple Airlines
Thu 4/162:15 pm
MCI
- SEA
1 stop21h 37m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/1611:48 am
PDX
- STL
2 stops18h 06m
Frontier
Sat 4/188:17 pm
STL
- PDX
1 stop16h 03m
Frontier
Deal found 3/3![Frontier logo]()
$197
This Delta deal was found by Cheapflights users on 3/3. 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 4/176:10 pm
SEA
- MCI
Nonstop3h 33m
Delta
Tue 4/217:42 am
MCI
- SEA
Nonstop4h 09m
Delta
Deal found 3/3![Delta logo]()
$179
This Southwest deal was found by Cheapflights users on 3/3. 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 4/175:15 am
SEA
- MCI
1 stop6h 10m
Southwest
Tue 4/214:25 pm
MCI
- SEA
2 stops9h 10m
Southwest
Deal found 3/3![Southwest logo]()
$184
This Southwest deal was found by Cheapflights users on 3/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:30 am
SEA
- MCI
2 stops13h 35m
Southwest
Mon 4/207:05 pm
MCI
- SEA
1 stop7h 00m
Southwest
Deal found 3/4![Southwest logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Thu 4/3011:58 am
PDX
- STL
1 stop29h 23m
Frontier
Mon 5/48:17 pm
STL
- PDX
1 stop18h 45m
Frontier
Deal found 3/4![Frontier logo]()
$179
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 March 8, 2026.
Search for one-way flight options from Washington to Missouri. Find affordable one-way fares based on user searches. Data last updated March 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 5/86:57 pm
SEA
- MCI
1 stop17h 09m
Frontier
Deal found 3/3![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/158:07 pm
SEA
- STL
1 stop21h 14m
Frontier
Deal found 3/3![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 4/247:12 pm
SEA
- STL
1 stop22h 20m
Frontier
Deal found 3/7![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 5/711:48 am
PDX
- STL
1 stop29h 24m
Frontier
Deal found 3/3![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/1512:28 pm
PDX
- STL
1 stop28h 53m
Frontier
Deal found 3/3![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/811:48 am
PDX
- MCI
1 stop24h 18m
Frontier
Deal found 3/6![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/1011:58 am
PDX
- STL
1 stop19h 50m
Frontier
Deal found 3/3![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/2912:38 pm
PDX
- STL
1 stop28h 43m
Frontier
Deal found 3/3![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/311:58 am
PDX
- STL
1 stop19h 50m
Frontier
Deal found 3/4![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/66:57 pm
SEA
- MCI
1 stop16h 33m
Frontier
Deal found 3/6![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/37:12 pm
SEA
- STL
1 stop22h 20m
Frontier
Deal found 3/6![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/61:48 pm
PDX
- MCI
1 stop21h 42m
Frontier
Deal found 3/6![Frontier 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 March 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $152 (Trip.com) |
One-way from | $66 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $405 |
Good round-trip deal | $227 or less |
Good one-way deal | $138 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 March 8, 2026.
Use the filters below to find and compare flights from Washington to Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Mon 4/6
11:55 pm-9:15 am
1 stop7h 20m
Kansas City
Mon 4/27
5:55 pm-11:30 pm
1 stop7h 35m
$179
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Tue 4/7
11:45 pm-9:15 am
1 stop7h 30m
Kansas City
Tue 4/14
3:40 pm-10:55 pm
2 stops9h 15m
$184
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Fri 5/1
6:10 pm-11:43 pm
Nonstop3h 33m
Kansas City
Mon 5/4
12:25 pm-6:54 pm
1 stop8h 29m
$198
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Wed 4/22
6:00 am-2:29 pm
1 stop6h 29m
Lambert-St Louis
Wed 4/29
2:20 pm-6:08 pm
1 stop5h 48m
$217
SeattleKansas City
SEA - MCI
SEAMCI
Seattle/Tacoma Intl
Fri 4/17
6:10 pm-11:43 pm
Nonstop3h 33m
Kansas City
Sun 4/19
7:42 am-9:51 am
Nonstop4h 09m
$218
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Sat 4/18
11:55 pm-9:30 am
1 stop7h 35m
Lambert-St Louis
Sun 4/26
4:40 pm-12:10 am
1 stop9h 30m
$229
PortlandKansas City
PDX - MCI
PDXMCI
Portland
Sat 4/25
1:32 pm-11:43 pm
1 stop8h 11m
Kansas City
Sat 5/2
7:06 am-5:01 pm
2 stops11h 55m
$232
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Fri 4/17
11:40 am-10:05 pm
2 stops8h 25m
Lambert-St Louis
Tue 4/21
6:30 pm-11:55 pm
1 stop7h 25m
$234
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Sat 5/2
6:40 am-6:10 pm
2 stops9h 30m
Lambert-St Louis
Fri 5/15
6:00 pm-12:55 am
1 stop8h 55m
$234
SeattleSt. Louis
SEA - STL
SEASTL
Seattle/Tacoma Intl
Sat 5/2
6:40 am-6:10 pm
2 stops9h 30m
Lambert-St Louis
Sun 5/3
8:25 am-2:45 pm
1 stop8h 20m
$234
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Washington with our price prediction graph.
SEA-MCI
PDX-STL
PDX-SGF
PDX-MCI
SEA-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington to Missouri
USWA-USMO
SEA-MCI
PDX-STL
PDX-SGF
PDX-MCI
What is the cheapest month to book a flight from State of Washington to Missouri?
Currently, March is the cheapest month in which you can book a flight from State of Washington to Missouri (average of $134). Flying from State of Washington to Missouri in February is currently the most expensive (average of $207). 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 March 8, 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 March 8, 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.
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Boarding
8.1
Entertainment
7.0
Overall
8.0
Crew
8.5
Food
7.1
Comfort
7.8
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.
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Alternative routes for Washington to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Missouri by cabin class
Find flights from Washington to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Missouri flights
Browse other Washington and Missouri flight options. Last updated on March 8, 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 March 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$359 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$133 | Average$249 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$375 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$450 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$168 | Average$285 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$182 | Average$402 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$486 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$205 | Average$455 | FlexibilityNo cancel fee | On-time75% |