$101+ Cheap flights from St. Louis (STL) to Oregon
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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Aug 11 — Aug 181
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Oregon 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 St. Louis to OregonExplore the most affordable flight options available from St. Louis to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.
Explore the most affordable flight options available from St. Louis to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 12, 2026.
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:25 pm
STL
- PDX
1 stop9h 15m
Delta
Thu 11/52:20 pm
PDX
- STL
1 stop7h 28m
Delta
Deal found 7/9![Delta logo]()
$238
This Frontier deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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.
Fri 9/2512:46 pm
STL
- PDX
1 stop9h 53m
Frontier
Sun 9/279:34 pm
PDX
- STL
1 stop12h 17m
Frontier
Deal found 7/10![Frontier logo]()
$240
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/2811:50 am
STL
- PDX
2 stops9h 30m
Southwest
Mon 8/3111:30 pm
PDX
- STL
1 stop8h 05m
Southwest
Deal found 7/10![Southwest logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Thu 8/2712:24 pm
BOI
- STL
1 stop5h 49m
Frontier
Deal found 7/11![Frontier logo]()
$248
This CheapOair deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Wed 8/125:21 pm
PDX
- STL
1 stop24h 02m
Frontier
Deal found 7/9![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 9/288:10 pm
STL
- BOI
1 stop16h 54m
Frontier
Thu 10/812:23 pm
BOI
- STL
1 stop5h 52m
Frontier
Deal found 7/11![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:25 am
STL
- PDX
1 stop6h 55m
Southwest
Sat 8/229:45 am
PDX
- STL
Nonstop3h 45m
Southwest
Deal found 7/9![Southwest logo]()
$254
This Southwest deal was found by Cheapflights users on 7/7. 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.
Sun 9/610:30 am
STL
- PDX
Nonstop4h 10m
Southwest
Sat 9/121:35 pm
PDX
- STL
1 stop6h 45m
Southwest
Deal found 7/7![Southwest logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/118:08 pm
STL
- PDX
1 stop22h 28m
Frontier
Tue 8/185:56 pm
PDX
- STL
2 stops45h 26m
Frontier
Deal found 7/9![Frontier logo]()
$256
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 9/53:00 pm
STL
- PDX
2 stops8h 20m
Southwest
Thu 9/105:35 am
PDX
- STL
2 stops10h 25m
Southwest
Deal found 7/10![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:30 am
STL
- PDX
1 stop13h 30m
Southwest
Sat 8/229:45 am
PDX
- STL
Nonstop3h 45m
Southwest
Deal found 7/10![Southwest logo]()
$260
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:10 pm
STL
- PDX
1 stop8h 00m
Southwest
Tue 10/208:35 am
PDX
- STL
2 stops7h 10m
Southwest
Deal found 7/8![Southwest logo]()
$261
Best flights from St. Louis to OregonDiscover carefully curated flight deals from St. Louis to Oregon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.
Discover carefully curated flight deals from St. Louis to Oregon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 9/238:00 am
STL
- EUG
1 stop5h 52m
Delta
Mon 9/284:45 pm
EUG
- STL
1 stop5h 59m
Delta
Deal found 7/10![Delta logo]()
$261
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/58:30 am
STL
- BOI
1 stop7h 00m
Southwest
Sat 9/123:25 pm
BOI
- STL
1 stop5h 55m
Southwest
Deal found 7/9![Southwest logo]()
$263
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/47:25 am
STL
- EUG
1 stop7h 45m
United Airlines
Mon 9/72:19 pm
EUG
- STL
1 stop6h 42m
United Airlines
Deal found 7/9![United Airlines logo]()
$296
This Alaska Airlines deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Sat 9/1911:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Fri 8/145:42 am
STL
- BOI
1 stop6h 34m
American Airlines
Fri 8/218:01 am
BOI
- STL
1 stop8h 36m
American Airlines
Deal found 7/7![American Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 7/7. 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.
Thu 8/67:45 pm
STL
- BOI
1 stop5h 14m
Delta
Tue 8/116:00 am
BOI
- STL
1 stop6h 38m
Delta
Deal found 7/7![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 7/7. 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.
Thu 8/1311:50 am
STL
- PDX
2 stops9h 30m
Southwest
Tue 8/185:50 am
PDX
- STL
1 stop10h 00m
Southwest
Deal found 7/7![Southwest logo]()
$276
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:45 pm
STL
- BOI
1 stop5h 14m
Delta
Tue 8/256:00 am
BOI
- STL
1 stop6h 38m
Delta
Deal found 7/9![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:35 am
STL
- PDX
2 stops11h 50m
Southwest
Wed 8/125:50 am
PDX
- STL
1 stop10h 00m
Southwest
Deal found 7/10![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/136:00 am
STL
- BOI
2 stops9h 15m
Southwest
Mon 8/173:50 pm
BOI
- STL
1 stop7h 45m
Southwest
Deal found 7/9![Southwest logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/83:19 pm
STL
- PDX
1 stop20h 21m
Alaska Airlines
Tue 9/1511:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 9/115:00 pm
STL
- EUG
1 stop8h 47m
Delta
Wed 9/164:45 pm
EUG
- STL
1 stop5h 59m
Delta
Deal found 7/10![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 7/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/179:40 am
STL
- BOI
2 stops12h 39m
United Airlines
Wed 11/185:00 am
BOI
- STL
2 stops8h 30m
United Airlines
Deal found 7/7![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/206:00 am
STL
- BOI
2 stops9h 15m
Southwest
Tue 8/2512:35 pm
BOI
- STL
2 stops8h 35m
Southwest
Deal found 7/9![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/146:55 pm
STL
- EUG
1 stop6h 52m
Delta
Sat 9/195:20 am
EUG
- STL
1 stop6h 10m
Delta
Deal found 7/9![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/248:30 am
STL
- BOI
2 stops12h 55m
Alaska Airlines
Tue 9/296:23 am
BOI
- STL
2 stops11h 44m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 7/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:00 am
STL
- MFR
1 stop6h 01m
United Airlines
Sat 8/291:00 pm
MFR
- STL
1 stop5h 46m
United Airlines
Deal found 7/8![United Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 7/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:00 pm
STL
- PDX
1 stop9h 58m
Delta
Sun 10/1810:50 pm
PDX
- STL
1 stop7h 59m
Delta
Deal found 7/8![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/73:45 pm
STL
- PDX
2 stops9h 20m
Southwest
Mon 8/107:35 pm
PDX
- STL
1 stop12h 00m
Southwest
Deal found 7/9![Southwest logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 10/316:00 am
STL
- RDM
1 stop8h 38m
Alaska Airlines
Tue 11/31:32 pm
RDM
- STL
1 stop22h 43m
Alaska Airlines
Deal found 7/9![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 11/55:45 am
STL
- PDX
1 stop9h 00m
Southwest
Tue 11/1011:30 am
PDX
- STL
1 stop7h 50m
Southwest
Deal found 7/12![Southwest logo]()
$318
This Delta deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 11/127:55 pm
STL
- PDX
1 stop5h 56m
Delta
Sun 11/152:30 pm
PDX
- STL
1 stop7h 09m
Delta
Deal found 7/11![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/184:40 pm
STL
- RDM
1 stop6h 31m
United Airlines
Wed 8/199:37 am
RDM
- STL
2 stops11h 22m
United Airlines
Deal found 7/11![United Airlines logo]()
$430
This Southwest deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/1411:50 am
STL
- PDX
2 stops9h 30m
Southwest
Sun 8/1611:30 pm
PDX
- STL
1 stop7h 45m
Southwest
Deal found 7/12![Southwest logo]()
$324
This Alaska Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/196:08 pm
STL
- MFR
1 stop6h 41m
Alaska Airlines
Fri 8/215:05 am
MFR
- STL
1 stop10h 05m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:10 am
STL
- RDM
2 stops9h 01m
United Airlines
Sat 8/159:36 am
RDM
- STL
2 stops11h 23m
United Airlines
Deal found 7/9![United Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:16 am
STL
- PDX
2 stops10h 46m
Delta
Fri 9/1812:25 am
PDX
- STL
1 stop8h 09m
Delta
Deal found 7/9![Delta logo]()
$348
This Southwest deal was found by Cheapflights users on 7/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:30 am
STL
- BOI
2 stops8h 45m
Southwest
Thu 8/202:55 pm
BOI
- STL
1 stop6h 00m
Southwest
Deal found 7/8![Southwest logo]()
$329
This Alaska Airlines deal was found by Cheapflights users on 7/8. 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.
Tue 9/223:19 pm
STL
- YKM
1 stop10h 36m
Alaska Airlines
Wed 9/236:15 am
YKM
- STL
1 stop6h 06m
Alaska Airlines
Deal found 7/8![Alaska Airlines logo]()
$447
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/207:55 am
STL
- EUG
1 stop5h 58m
Delta
Tue 10/274:44 pm
EUG
- STL
1 stop5h 50m
Delta
Deal found 7/12![Delta logo]()
$349
Last-minute flights from St. Louis to OregonDiscover last-minute flight deals from St. Louis to Oregon. Data last updated July 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Oregon. Data last updated July 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:34 pm
STL
- PDX
1 stop7h 46m
Delta
Mon 8/1012:35 am
PDX
- STL
1 stop6h 02m
Delta
Deal found 7/8![Delta logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:57 pm
STL
- PDX
2 stops25h 34m
Frontier
Wed 8/125:21 pm
PDX
- STL
1 stop24h 02m
Frontier
Deal found 7/9![Frontier logo]()
$267
This CheapOair deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Wed 8/125:21 pm
PDX
- STL
1 stop24h 02m
Frontier
Deal found 7/9![Frontier logo]()
$250
This Delta deal was found by Cheapflights users on 7/7. 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.
Thu 8/67:45 pm
STL
- PDX
1 stop5h 54m
Delta
Mon 8/1012:35 am
PDX
- STL
1 stop7h 48m
Delta
Deal found 7/7![Delta logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/118:08 pm
STL
- PDX
1 stop22h 28m
Frontier
Tue 8/185:56 pm
PDX
- STL
2 stops45h 26m
Frontier
Deal found 7/9![Frontier logo]()
$256
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:30 am
STL
- PDX
1 stop13h 30m
Southwest
Sat 8/229:45 am
PDX
- STL
Nonstop3h 45m
Southwest
Deal found 7/10![Southwest logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Thu 8/2712:24 pm
BOI
- STL
1 stop5h 49m
Frontier
Deal found 7/11![Frontier logo]()
$248
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:55 am
STL
- PDX
2 stops11h 25m
Southwest
Sat 8/229:00 am
PDX
- STL
1 stop7h 25m
Southwest
Deal found 7/9![Southwest logo]()
$240
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:45 pm
STL
- BOI
1 stop5h 14m
Delta
Tue 8/256:00 am
BOI
- STL
1 stop6h 38m
Delta
Deal found 7/9![Delta logo]()
$263
This American Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/206:36 am
STL
- BOI
1 stop8h 23m
American Airlines
Wed 8/261:55 pm
BOI
- STL
2 stops9h 19m
American Airlines
Deal found 7/10![American Airlines logo]()
$268
This Trip.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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.
Sun 8/237:58 pm
STL
- PDX
1 stop23h 13m
Frontier
Sun 8/301:47 pm
PDX
- STL
1 stop26h 03m
Frontier
Deal found 7/9![Frontier logo]()
$263
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/286:00 pm
STL
- PDX
1 stop7h 15m
Southwest
Mon 8/3111:30 pm
PDX
- STL
1 stop8h 05m
Southwest
Deal found 7/10![Southwest logo]()
$238
One-way flights from St. Louis to OregonSearch for one-way flight options from St. Louis to Oregon. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
Search for one-way flight options from St. Louis to Oregon. Find affordable one-way fares based on user searches. Data last updated July 12, 2026.
This United Airlines deal was found by Cheapflights users on 7/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:20 pm
STL
- PDX
1 stop11h 07m
United Airlines
Deal found 7/8![United Airlines logo]()
$101
This Delta deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/95:00 pm
STL
- PDX
1 stop7h 31m
Delta
Deal found 7/9![Delta logo]()
$106
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/1112:20 pm
STL
- PDX
2 stops9h 30m
Southwest
Deal found 7/9![Southwest logo]()
$111
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/72:20 pm
STL
- PDX
1 stop10h 45m
Southwest
Deal found 7/9![Southwest logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/138:10 pm
STL
- PDX
1 stop22h 25m
Frontier
Deal found 7/12![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:46 pm
STL
- PDX
1 stop9h 53m
Frontier
Deal found 7/9![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:08 pm
STL
- PDX
1 stop22h 43m
Frontier
Deal found 7/11![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Deal found 7/11![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/85:27 pm
STL
- PDX
2 stops23h 00m
Frontier
Deal found 7/9![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 10/126:41 pm
STL
- PDX
2 stops23h 54m
Frontier
Deal found 7/11![Frontier logo]()
$130
This CheapOair deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Deal found 7/9![Frontier logo]()
$131
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 9/224:40 pm
STL
- EUG
1 stop6h 37m
United Airlines
Deal found 7/10![United Airlines logo]()
$131
Find flight deals from St. Louis to Oregon
Keep the following information in mind while searching for St. Louis to Oregon flight deals. Data was last updated July 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $238 (Delta) |
One-way from | $101 (United Airlines) |
Popular in | July |
Cheapest in | January |
Average price | $437 |
Good round-trip deal | $417 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Oregon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 12, 2026.
Use the filters below to find and compare flights from St. Louis to Oregon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisEugene
STL - EUG
STLEUG
Lambert-St Louis
Wed 9/23
8:00 am-11:52 am
1 stop5h 52m
Eugene
Mon 9/28
4:45 pm-12:44 am
1 stop5h 59m
$261
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Sat 9/5
8:30 am-2:30 pm
1 stop7h 00m
Boise Air Term. Gowen Fld
Sat 9/12
3:25 pm-10:20 pm
1 stop5h 55m
$263
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 8/6
7:45 pm-11:59 pm
1 stop5h 14m
Boise Air Term. Gowen Fld
Tue 8/11
6:00 am-1:38 pm
1 stop6h 38m
$263
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 8/20
7:45 pm-11:59 pm
1 stop5h 14m
Boise Air Term. Gowen Fld
Tue 8/25
6:00 am-1:38 pm
1 stop6h 38m
$263
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Thu 8/13
11:50 am-7:20 pm
2 stops9h 30m
Portland
Tue 8/18
5:50 am-5:50 pm
1 stop10h 00m
$276
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 8/5
5:35 am-3:25 pm
2 stops11h 50m
Portland
Wed 8/12
5:50 am-5:50 pm
1 stop10h 00m
$281
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 8/13
6:00 am-2:15 pm
2 stops9h 15m
Boise Air Term. Gowen Fld
Mon 8/17
3:50 pm-12:35 am
1 stop7h 45m
$287
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 8/20
6:00 am-2:15 pm
2 stops9h 15m
Boise Air Term. Gowen Fld
Tue 8/25
12:35 pm-10:10 pm
2 stops8h 35m
$293
St. LouisEugene
STL - EUG
STLEUG
Lambert-St Louis
Fri 9/4
7:25 am-1:10 pm
1 stop7h 45m
Eugene
Mon 9/7
2:19 pm-11:01 pm
1 stop6h 42m
$296
St. LouisEugene
STL - EUG
STLEUG
Lambert-St Louis
Fri 9/11
5:00 pm-11:47 pm
1 stop8h 47m
Eugene
Wed 9/16
4:45 pm-12:44 am
1 stop5h 59m
$296
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Oregon
Have a flexible travel schedule? Discover the best time to fly to Oregon from St. Louis with our price prediction graph.
STL-EUG
STL-BOI
STL-PDX
STL-MFR
STL-RDM
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 St. Louis to Oregon
STL-USOR
STL-EUG
STL-BOI
STL-PDX
STL-MFR
What is the cheapest month to book a flight from St. Louis to Oregon?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $94). Flying from St. Louis to Oregon in November is currently the most expensive (average of $228). 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 STL to OR?
Find hourly flight availability from St. Louis to Oregon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 12, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 25% on flights from St. Louis to Oregon by exploring options for tickets in the evening.
How much does it cost to fly round-trip from St. Louis to Oregon?
How far ahead should I book a flight from St. Louis to Oregon?
The price you pay for your flight from St. Louis to Oregon may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Oregon
Get insights into the airlines that provide service to Oregon. 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 Oregon. Reviews last updated July 12, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Southwest, andDelta from St. Louis to Oregon to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Boarding
8.1
Crew
8.5
Overall
7.9
Entertainment
7.0
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Oregon. 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 St. Louis to Oregon
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Complete your trip
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Find flights from St. Louis to Oregon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Oregon flights
Browse other St. Louis and Oregon flight options. Last updated on July 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Oregon flights
Consider these flights traveling from St. Louis to Oregon.
Top 6 airlines flying from St. Louis to Oregon
Discover the top 6 airlines that operate flights from St. Louis to Oregon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$149 | Average$261 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$186 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$204 | Average$392 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$447 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$244 | Average$458 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$249 | Average$534 | FlexibilityNo cancel fee | On-time75% |