$120+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Aug 4 — Aug 111
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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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 St. Louis to Oregon
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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 5, 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 5, 2026.
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Tue 8/111:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/30![Frontier logo]()
$254
This CheapOair deal was found by Cheapflights users on 7/4. 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.
Mon 7/208:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Wed 7/295:21 pm
PDX
- STL
1 stop24h 02m
Frontier
Deal found 7/4![Frontier logo]()
$259
This Trip.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Fri 8/75:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/3![Frontier logo]()
$263
This CheapOair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:10 pm
STL
- BOI
1 stop16h 54m
Frontier
Thu 9/1712:59 pm
BOI
- STL
1 stop5h 16m
Frontier
Deal found 7/1![Frontier logo]()
$266
This Priceline deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:46 pm
STL
- PDX
1 stop9h 53m
Multiple Airlines
Tue 9/2911:16 am
PDX
- STL
Nonstop3h 54m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$269
This Orbitz deal was found by Cheapflights users on 7/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:10 pm
STL
- PDX
1 stop22h 25m
Multiple Airlines
Sat 9/1911:16 am
PDX
- STL
Nonstop3h 54m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$274
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:10 pm
STL
- PDX
1 stop22h 25m
Frontier
Wed 10/145:35 pm
PDX
- STL
1 stop23h 40m
Frontier
Deal found 6/30![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Sat 8/2912:20 pm
PDX
- STL
1 stop28h 53m
Frontier
Deal found 7/2![Frontier logo]()
$277
This Expedia deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:10 pm
STL
- PDX
1 stop20h 17m
Frontier
Sun 10/43:22 pm
PDX
- STL
1 stop25h 53m
Frontier
Deal found 6/30![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Mon 8/316:17 pm
PDX
- STL
1 stop21h 33m
Frontier
Deal found 7/1![Frontier logo]()
$282
This Gotogate deal was found by Cheapflights users on 7/4. 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 Gotogate 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
Multiple Airlines
Sat 9/193:22 pm
PDX
- STL
1 stop25h 53m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$283
This Booking.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:08 pm
STL
- PDX
Nonstop4h 12m
Multiple Airlines
Wed 8/265:56 pm
PDX
- STL
1 stop23h 17m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$284
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 5, 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 5, 2026.
This Southwest deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:30 am
STL
- PDX
Nonstop4h 10m
Southwest
Sat 8/2911:30 pm
PDX
- STL
1 stop7h 45m
Southwest
Deal found 7/2![Southwest logo]()
$309
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:52 pm
STL
- PDX
1 stop6h 24m
Delta
Sat 9/196:00 am
PDX
- STL
1 stop8h 47m
Delta
Deal found 7/1![Delta logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Wed 8/2611:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 6/29![Alaska Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/121:36 pm
STL
- PDX
2 stops11h 09m
United Airlines
Sat 9/1910:50 am
PDX
- STL
1 stop7h 48m
United Airlines
Deal found 7/3![United Airlines logo]()
$422
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:10 pm
STL
- MFR
1 stop21h 36m
Multiple Airlines
Mon 7/209:11 pm
MFR
- STL
1 stop18h 54m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:20 pm
STL
- PDX
2 stops9h 30m
Southwest
Tue 8/186:45 am
PDX
- STL
2 stops9h 10m
Southwest
Deal found 6/30![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 7/3. 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 8/146:20 am
STL
- BOI
1 stop8h 22m
Delta
Fri 8/216:45 pm
BOI
- STL
1 stop4h 56m
Delta
Deal found 7/3![Delta logo]()
$363
This Alaska Airlines deal was found by Cheapflights users on 7/4. 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.
Sat 9/126:29 am
STL
- PDX
1 stop9h 08m
Alaska Airlines
Sat 9/1911:16 am
PDX
- STL
Nonstop3h 54m
Alaska Airlines
Deal found 7/4![Alaska Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:34 pm
STL
- BOI
1 stop7h 25m
Delta
Sat 8/152:53 pm
BOI
- STL
1 stop6h 10m
Delta
Deal found 6/30![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:59 pm
STL
- PDX
2 stops10h 06m
United Airlines
Sun 9/67:00 am
PDX
- STL
1 stop8h 59m
United Airlines
Deal found 6/30![United Airlines logo]()
$424
This Southwest deal was found by Cheapflights users on 7/4. 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.
Sun 8/23:45 pm
STL
- PDX
2 stops10h 30m
Southwest
Wed 8/51:05 pm
PDX
- STL
1 stop7h 40m
Southwest
Deal found 7/4![Southwest logo]()
$394
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:48 am
STL
- BOI
1 stop5h 54m
Delta
Tue 8/256:45 pm
BOI
- STL
1 stop4h 56m
Delta
Deal found 6/30![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am
STL
- BOI
1 stop8h 27m
Alaska Airlines
Wed 11/186:33 am
BOI
- STL
1 stop6h 42m
Alaska Airlines
Deal found 6/30![Alaska Airlines logo]()
$413
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:00 am
STL
- EUG
1 stop7h 37m
United Airlines
Sun 8/162:19 pm
EUG
- STL
1 stop6h 40m
United Airlines
Deal found 7/2![United Airlines logo]()
$425
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:05 pm
STL
- EUG
1 stop6h 35m
Southwest
Wed 8/261:40 pm
EUG
- STL
1 stop5h 30m
Southwest
Deal found 6/29![Southwest logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:08 pm
STL
- MFR
1 stop6h 41m
Alaska Airlines
Fri 8/281:27 pm
MFR
- STL
1 stop8h 32m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:08 pm
STL
- BOI
2 stops11h 38m
United Airlines
Wed 11/182:39 pm
BOI
- STL
2 stops7h 30m
United Airlines
Deal found 7/2![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:45 pm
STL
- RDM
1 stop6h 04m
Delta
Sat 8/225:10 am
RDM
- STL
1 stop6h 28m
Delta
Deal found 7/3![Delta logo]()
$425
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:55 am
STL
- EUG
1 stop7h 45m
Southwest
Sun 9/207:00 am
EUG
- STL
2 stops9h 10m
Southwest
Deal found 7/1![Southwest logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 7/4. 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.
Sun 9/66:35 am
STL
- BOI
1 stop7h 01m
Alaska Airlines
Mon 9/285:52 pm
BOI
- STL
2 stops22h 18m
Alaska Airlines
Deal found 7/4![Alaska Airlines logo]()
$438
This United Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:10 am
STL
- BOI
2 stops11h 21m
United Airlines
Tue 9/2910:30 am
BOI
- STL
2 stops9h 51m
United Airlines
Deal found 7/2![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:00 am
STL
- MFR
1 stop5h 40m
Delta
Wed 8/266:15 am
MFR
- STL
2 stops10h 40m
Delta
Deal found 7/2![Delta logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:08 pm
STL
- MFR
1 stop6h 41m
Alaska Airlines
Thu 8/2710:28 am
MFR
- STL
1 stop6h 10m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$449
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:25 am
STL
- BOI
1 stop7h 40m
Southwest
Fri 8/213:50 pm
BOI
- STL
1 stop7h 45m
Southwest
Deal found 6/30![Southwest logo]()
$467
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:00 pm
STL
- RDM
1 stop8h 58m
Delta
Mon 9/147:24 pm
RDM
- STL
2 stops11h 16m
Delta
Deal found 7/2![Delta logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:40 pm
STL
- RDM
1 stop9h 10m
Alaska Airlines
Tue 10/61:32 pm
RDM
- STL
1 stop8h 27m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$449
This Southwest deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:45 pm
STL
- BOI
2 stops8h 10m
Southwest
Wed 7/295:30 am
BOI
- STL
2 stops11h 15m
Southwest
Deal found 7/3![Southwest logo]()
$469
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:13 pm
STL
- MFR
2 stops11h 46m
United Airlines
Wed 7/155:00 am
MFR
- STL
1 stop5h 42m
United Airlines
Deal found 6/30![United Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:32 pm
STL
- MFR
2 stops10h 51m
Delta
Thu 8/276:15 am
MFR
- STL
2 stops10h 40m
Delta
Deal found 7/2![Delta logo]()
$435
This United Airlines deal was found by Cheapflights users on 7/4. 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 10/37:08 am
STL
- RDM
1 stop6h 40m
United Airlines
Tue 10/67:20 am
RDM
- STL
2 stops9h 23m
United Airlines
Deal found 7/4![United Airlines logo]()
$530
Last-minute flights from St. Louis to OregonDiscover last-minute flight deals from St. Louis to Oregon. Data last updated July 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Oregon. Data last updated July 5, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:08 pm
STL
- PDX
1 stop22h 43m
Frontier
Tue 7/215:16 pm
PDX
- STL
1 stop24h 07m
Frontier
Deal found 6/30![Frontier logo]()
$294
This CheapOair deal was found by Cheapflights users on 7/4. 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.
Mon 7/208:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Wed 7/295:21 pm
PDX
- STL
1 stop24h 02m
Frontier
Deal found 7/4![Frontier logo]()
$259
This CheapOair deal was found by Cheapflights users on 7/4. 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.
Sat 7/258:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Tue 7/281:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 7/4![Frontier logo]()
$294
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Tue 8/111:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 6/30![Frontier logo]()
$254
This Trip.com deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Fri 8/75:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/3![Frontier logo]()
$263
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Thu 8/61:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 7/3![Frontier logo]()
$296
This CheapOair deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:03 pm
STL
- PDX
1 stop25h 01m
Frontier
Fri 8/75:49 pm
PDX
- STL
1 stop22h 26m
Frontier
Deal found 7/2![Frontier logo]()
$275
This CheapOair deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
STL
- PDX
1 stop23h 44m
Frontier
Mon 8/175:49 pm
PDX
- STL
1 stop22h 01m
Frontier
Deal found 7/3![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:57 pm
STL
- PDX
2 stops25h 54m
Frontier
Mon 8/105:49 pm
PDX
- STL
1 stop22h 16m
Frontier
Deal found 6/30![Frontier logo]()
$291
This Frontier deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Sat 8/2912:20 pm
PDX
- STL
1 stop28h 53m
Frontier
Deal found 7/2![Frontier logo]()
$277
This Booking.com deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:08 pm
STL
- PDX
Nonstop4h 12m
Multiple Airlines
Wed 8/265:56 pm
PDX
- STL
1 stop23h 17m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Mon 8/316:17 pm
PDX
- STL
1 stop21h 33m
Frontier
Deal found 7/1![Frontier logo]()
$282
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 5, 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 5, 2026.
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:46 pm
STL
- PDX
1 stop9h 53m
Frontier
Deal found 6/30![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
STL
- PDX
1 stop20h 07m
Frontier
Deal found 7/1![Frontier logo]()
$126
This Trip.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:03 pm
STL
- PDX
1 stop25h 01m
Frontier
Deal found 7/1![Frontier logo]()
$129
This Mytrip deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:08 pm
STL
- PDX
1 stop22h 43m
Frontier
Deal found 7/3![Frontier logo]()
$130
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/258:08 pm
STL
- PDX
1 stop22h 43m
Frontier
Deal found 6/30![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 7/5. 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.
Sun 10/48:10 pm
STL
- PDX
1 stop22h 25m
Frontier
Deal found 7/5![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:45 pm
STL
- PDX
1 stop24h 36m
Frontier
Deal found 7/1![Frontier logo]()
$133
This CheapOair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/18:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 7/1![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/4. 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.
Sat 8/14:57 pm
STL
- PDX
2 stops23h 01m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$136
This CheapOair deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:03 pm
STL
- PDX
1 stop25h 01m
Frontier
Deal found 7/2![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/4. 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 7/314:57 pm
STL
- PDX
2 stops47h 01m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:08 pm
STL
- PDX
Nonstop4h 12m
Alaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$149
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 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $254 (CheapOair) |
One-way from | $120 (Frontier) |
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 5, 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. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 8/22
8:30 am-10:40 am
Nonstop4h 10m
Portland
Sat 8/29
11:30 pm-9:15 am
1 stop7h 45m
$309
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 9/12
3:52 pm-8:16 pm
1 stop6h 24m
Portland
Sat 9/19
6:00 am-4:47 pm
1 stop8h 47m
$319
Quickest round-trip
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 8/25
6:08 pm-8:20 pm
Nonstop4h 12m
Portland
Wed 8/26
11:16 am-5:10 pm
Nonstop3h 54m
$337
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 8/12
12:20 pm-7:50 pm
2 stops9h 30m
Portland
Tue 8/18
6:45 am-5:55 pm
2 stops9h 10m
$358
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Fri 8/14
6:20 am-1:42 pm
1 stop8h 22m
Boise Air Term. Gowen Fld
Fri 8/21
6:45 pm-12:41 am
1 stop4h 56m
$363
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Mon 8/10
5:34 pm-11:59 pm
1 stop7h 25m
Boise Air Term. Gowen Fld
Sat 8/15
2:53 pm-10:03 pm
1 stop6h 10m
$369
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Thu 8/20
8:48 am-1:42 pm
1 stop5h 54m
Boise Air Term. Gowen Fld
Tue 8/25
6:45 pm-12:41 am
1 stop4h 56m
$369
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 9/12
6:29 am-1:37 pm
1 stop9h 08m
Portland
Sat 9/19
11:16 am-5:10 pm
Nonstop3h 54m
$387
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sun 8/2
3:45 pm-12:15 am
2 stops10h 30m
Portland
Wed 8/5
1:05 pm-10:45 pm
1 stop7h 40m
$394
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Tue 11/17
7:00 am-2:27 pm
1 stop8h 27m
Boise Air Term. Gowen Fld
Wed 11/18
6:33 am-2:15 pm
1 stop6h 42m
$413
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-BOI
STL-PDX
STL-MFR
STL-EUG
STL-YKM
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-BOI
STL-PDX
STL-MFR
STL-EUG
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 5, 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 5, 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.
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Crew
8.5
Entertainment
7.0
Overall
7.9
Food
7.1
Boarding
8.1
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 5, 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 5, 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$459 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$532 | FlexibilityNo cancel fee | On-time75% |