$66+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Mar 18 — Mar 251
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Oregon
Cheapest
Best
Last-minute
One-way
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 February 16, 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 February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:12 pm
STL
- BOI
1 stop15h 08m
Frontier
Sun 3/1512:15 pm
BOI
- STL
1 stop20h 34m
Frontier
Deal found 2/15![Frontier logo]()
$196
This American Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:06 am
STL
- PDX
1 stop9h 58m
American Airlines
Sat 9/195:56 am
PDX
- STL
1 stop10h 25m
American Airlines
Deal found 2/14![American Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Sun 4/198:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Wed 4/221:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Deal found 2/12![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Thu 3/510:11 pm
STL
- PDX
1 stop13h 02m
Frontier
Sun 3/812:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/12![Frontier logo]()
$224
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Wed 5/136:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Mon 5/1811:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$229
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/178:12 pm
STL
- PDX
1 stop16h 51m
Multiple Airlines
Sat 5/2311:18 am
PDX
- STL
Nonstop3h 48m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$236
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 9/126:20 pm
STL
- PDX
Nonstop4h 10m
Alaska Airlines
Sat 9/195:07 am
PDX
- STL
1 stop7h 19m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$239
This CheapOair deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:12 pm
STL
- PDX
1 stop15h 57m
Frontier
Sun 3/1512:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/14![Frontier logo]()
$245
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 5/156:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Fri 5/2211:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:45 pm
STL
- PDX
1 stop12h 25m
Southwest
Mon 5/2511:55 pm
PDX
- STL
1 stop7h 35m
Southwest
Deal found 2/15![Southwest logo]()
$254
This CheapOair deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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.
Sun 3/2210:47 pm
STL
- PDX
1 stop12h 11m
Frontier
Mon 3/3012:52 pm
PDX
- STL
1 stop20h 27m
Frontier
Deal found 2/13![Frontier logo]()
$255
This CheapOair deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Tue 5/1910:39 am
PDX
- STL
1 stop6h 21m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$259
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 February 16, 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 February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Sun 4/198:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Wed 4/221:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Deal found 2/12![Frontier logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Sun 5/2411:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$229
This United Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/225:15 am
STL
- PDX
1 stop6h 39m
United Airlines
Mon 3/307:14 pm
PDX
- STL
1 stop8h 36m
United Airlines
Deal found 2/14![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:12 pm
STL
- PDX
1 stop7h 42m
Delta
Tue 4/71:45 pm
PDX
- STL
1 stop8h 36m
Delta
Deal found 2/15![Delta logo]()
$249
This American Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/174:13 pm
STL
- PDX
1 stop8h 56m
American Airlines
Tue 3/2411:59 pm
PDX
- STL
1 stop8h 04m
American Airlines
Deal found 2/15![American Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:55 pm
STL
- EUG
1 stop8h 05m
Southwest
Wed 4/291:40 pm
EUG
- STL
1 stop6h 05m
Southwest
Deal found 2/15![Southwest logo]()
$307
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:11 pm
STL
- PDX
1 stop13h 02m
Frontier
Mon 3/912:52 pm
PDX
- STL
1 stop28h 19m
Frontier
Deal found 2/12![Frontier logo]()
$229
This Orbitz deal was found by Cheapflights users on 2/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:56 pm
STL
- PDX
1 stop6h 15m
Alaska Airlines
Sat 5/2311:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:40 pm
STL
- PDX
1 stop8h 34m
United Airlines
Wed 4/228:40 am
PDX
- STL
1 stop6h 16m
United Airlines
Deal found 2/14![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:59 pm
STL
- PDX
1 stop5h 41m
Delta
Mon 5/183:00 pm
PDX
- STL
1 stop6h 21m
Delta
Deal found 2/14![Delta logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Mon 5/1812:13 pm
PDX
- STL
1 stop9h 41m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:12 pm
STL
- PDX
1 stop16h 57m
Frontier
Fri 3/2712:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/15![Frontier logo]()
$245
This United Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 3/66:05 pm
STL
- PDX
1 stop6h 54m
United Airlines
Wed 3/115:05 am
PDX
- STL
1 stop6h 14m
United Airlines
Deal found 2/13![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:05 pm
STL
- BOI
1 stop7h 04m
Delta
Wed 3/253:00 pm
BOI
- STL
1 stop7h 25m
Delta
Deal found 2/15![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Thu 2/2610:11 pm
STL
- BOI
2 stops14h 00m
Frontier
Thu 3/512:38 pm
BOI
- STL
1 stop20h 11m
Frontier
Deal found 2/12![Frontier logo]()
$276
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:40 pm
STL
- RDM
1 stop8h 10m
United Airlines
Tue 5/512:55 pm
RDM
- STL
1 stop5h 48m
United Airlines
Deal found 2/15![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 2/12. 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.
Wed 3/256:12 pm
STL
- EUG
1 stop6h 34m
Delta
Tue 3/3111:40 am
EUG
- STL
2 stops10h 41m
Delta
Deal found 2/12![Delta logo]()
$282
This Alaska Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:33 pm
STL
- MFR
1 stop7h 06m
Alaska Airlines
Sun 5/1712:36 pm
MFR
- STL
1 stop26h 01m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:20 pm
STL
- RDM
2 stops10h 46m
Delta
Tue 5/511:35 am
RDM
- STL
2 stops9h 38m
Delta
Deal found 2/15![Delta logo]()
$286
This United Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 5/12:35 pm
STL
- MFR
1 stop8h 56m
United Airlines
Mon 5/116:36 pm
MFR
- STL
1 stop9h 11m
United Airlines
Deal found 2/13![United Airlines logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Wed 5/136:20 pm
STL
- MFR
1 stop6h 33m
Alaska Airlines
Sun 5/174:11 pm
MFR
- STL
1 stop22h 55m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/52:12 pm
STL
- BOI
2 stops10h 33m
Delta
Sat 4/1110:35 am
BOI
- STL
2 stops9h 56m
Delta
Deal found 2/14![Delta logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Thu 4/167:00 am
STL
- MFR
1 stop7h 45m
Alaska Airlines
Mon 4/207:50 pm
MFR
- STL
1 stop17h 01m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 2/12. 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.
Fri 5/12:20 pm
STL
- BOI
2 stops10h 57m
Delta
Mon 5/41:52 pm
BOI
- STL
2 stops9h 33m
Delta
Deal found 2/12![Delta logo]()
$286
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:46 pm
STL
- EUG
2 stops12h 12m
Delta
Wed 4/225:15 am
EUG
- STL
1 stop6h 08m
Delta
Deal found 2/14![Delta logo]()
$291
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Mon 4/137:00 am
STL
- EUG
1 stop18h 58m
Alaska Airlines
Wed 4/228:00 am
EUG
- STL
1 stop13h 59m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/146:45 pm
STL
- BOI
1 stop6h 12m
Delta
Mon 4/207:24 am
BOI
- STL
2 stops9h 02m
Delta
Deal found 2/13![Delta logo]()
$301
This Expedia deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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.
Fri 4/177:00 am
STL
- RDM
1 stop7h 29m
Alaska Airlines
Tue 4/211:23 pm
RDM
- STL
1 stop8h 36m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 2/12. 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.
Thu 3/57:00 am
STL
- EUG
2 stops11h 30m
Delta
Tue 3/176:08 am
EUG
- STL
2 stops8h 57m
Delta
Deal found 2/12![Delta logo]()
$310
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Thu 3/57:00 am
STL
- EUG
1 stop16h 31m
Alaska Airlines
Mon 3/169:01 am
EUG
- STL
1 stop26h 50m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$343
Last-minute flights from St. Louis to OregonDiscover last-minute flight deals from St. Louis to Oregon. Data last updated February 16, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Oregon. Data last updated February 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Thu 2/2610:11 pm
STL
- BOI
2 stops14h 00m
Frontier
Thu 3/512:38 pm
BOI
- STL
1 stop20h 11m
Frontier
Deal found 2/12![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Thu 3/510:11 pm
STL
- PDX
1 stop13h 02m
Frontier
Sun 3/812:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/12![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:11 pm
STL
- PDX
1 stop13h 02m
Frontier
Mon 3/912:52 pm
PDX
- STL
1 stop28h 19m
Frontier
Deal found 2/12![Frontier logo]()
$229
This Delta deal was found by Cheapflights users on 2/12. 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.
Thu 3/57:00 am
STL
- EUG
2 stops17h 55m
Delta
Sat 3/1412:40 pm
EUG
- STL
1 stop6h 51m
Delta
Deal found 2/12![Delta logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:12 pm
STL
- BOI
1 stop15h 08m
Frontier
Sun 3/1512:15 pm
BOI
- STL
1 stop20h 34m
Frontier
Deal found 2/15![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:12 pm
STL
- PDX
1 stop15h 57m
Frontier
Sun 3/1512:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/14![Frontier logo]()
$245
This American Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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.
Sat 3/76:36 pm
STL
- PDX
1 stop7h 41m
American Airlines
Sat 3/1411:59 pm
PDX
- STL
1 stop8h 04m
American Airlines
Deal found 2/13![American Airlines logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 2/12. 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.
Tue 3/107:00 am
STL
- EUG
1 stop7h 52m
Alaska Airlines
Tue 3/103:07 pm
EUG
- STL
1 stop20h 44m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:05 pm
STL
- BOI
1 stop7h 04m
Delta
Wed 3/253:00 pm
BOI
- STL
1 stop7h 25m
Delta
Deal found 2/15![Delta logo]()
$277
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2210:47 pm
STL
- PDX
1 stop12h 11m
Frontier
Mon 3/3012:52 pm
PDX
- STL
1 stop20h 27m
Frontier
Deal found 2/12![Frontier logo]()
$255
This CheapOair deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 3/258:12 pm
STL
- PDX
1 stop16h 57m
Frontier
Mon 3/3012:52 pm
PDX
- STL
1 stop20h 27m
Frontier
Deal found 2/13![Frontier logo]()
$275
This Delta deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:12 pm
STL
- PDX
1 stop7h 42m
Delta
Fri 4/1011:15 pm
PDX
- STL
1 stop8h 31m
Delta
Deal found 2/15![Delta logo]()
$278
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 February 16, 2026.
Search for one-way flight options from St. Louis to Oregon. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Sat 5/98:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Deal found 2/12![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 2/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:12 pm
STL
- PDX
1 stop18h 50m
Frontier
Deal found 2/12![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:16 pm
STL
- PDX
1 stop18h 46m
Frontier
Deal found 2/15![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 5/158:12 pm
STL
- PDX
1 stop17h 30m
Frontier
Deal found 2/13![Frontier logo]()
$84
This Trip.com deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:12 pm
STL
- BOI
1 stop16h 08m
Frontier
Deal found 2/14![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- PDX
1 stop13h 04m
Frontier
Deal found 2/15![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Sun 5/108:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Deal found 2/12![Frontier logo]()
$106
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2610:11 pm
STL
- PDX
1 stop22h 32m
Frontier
Deal found 2/12![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/148:12 pm
STL
- PDX
1 stop16h 57m
Frontier
Deal found 2/15![Frontier logo]()
$110
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 5/136:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$115
This United Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:59 pm
STL
- PDX
1 stop6h 55m
United Airlines
Deal found 2/14![United Airlines logo]()
$120
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:58 am
STL
- EUG
1 stop7h 04m
American Airlines
Deal found 2/12![American Airlines logo]()
$139
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 February 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $196 (Kiwi.com) |
One-way from | $66 (Kiwi.com) |
Popular in | March |
Cheapest in | January |
Average price | $376 |
Good round-trip deal | $278 or less |
Good one-way deal | $134 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 February 16, 2026.
Use the filters below to find and compare flights from St. Louis to Oregon that are best for you.
Fly from
St. Louis
Fly to
Oregon
Route
Depart
Return
Price
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sun 4/19
8:12 pm-11:03 am
1 stop16h 51m
Portland
Wed 4/22
1:48 pm-7:12 pm
1 stop27h 24m
$222
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sat 5/16
6:20 pm-8:37 pm
Nonstop4h 17m
Portland
Sun 5/24
11:18 am-5:06 pm
Nonstop3h 48m
$229
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Thu 3/5
10:11 pm-9:13 am
1 stop13h 02m
Portland
Mon 3/9
12:52 pm-7:11 pm
1 stop28h 19m
$229
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Fri 5/15
7:56 pm-12:11 am
1 stop6h 15m
Portland
Sat 5/23
11:18 am-5:06 pm
Nonstop3h 48m
$239
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 5/13
5:33 pm-7:50 pm
Nonstop4h 17m
Portland
Mon 5/18
12:13 pm-11:54 pm
1 stop9h 41m
$239
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 3/18
8:12 pm-11:09 am
1 stop16h 57m
Portland
Fri 3/27
12:04 pm-9:49 am
1 stop19h 45m
$245
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Sun 3/22
5:15 am-9:54 am
1 stop6h 39m
Portland
Mon 3/30
7:14 pm-5:50 am
1 stop8h 36m
$249
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Fri 4/3
6:12 pm-11:54 pm
1 stop7h 42m
Portland
Tue 4/7
1:45 pm-12:21 am
1 stop8h 36m
$249
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Tue 3/17
4:13 pm-11:09 pm
1 stop8h 56m
Portland
Tue 3/24
11:59 pm-10:03 am
1 stop8h 04m
$249
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 4/15
2:40 pm-9:14 pm
1 stop8h 34m
Portland
Wed 4/22
8:40 am-4:56 pm
1 stop6h 16m
$249
Showing 1-10 of 57 results
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-EUG
STL-RDM
STL-MFR
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-EUG
STL-RDM
What is the cheapest month to book a flight from St. Louis to Oregon?
Currently, June is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $156). Flying from St. Louis to Oregon in March is currently the most expensive (average of $248). 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 February 16, 2026.
When flying from St. Louis to Oregon, 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 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 February 16, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Crew
8.5
Entertainment
7.0
Food
7.1
Overall
8.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for St. Louis to Oregon
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Oregon by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Oregon by cabin class
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 February 16, 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 7 airlines flying from St. Louis to Oregon
Discover the top 7 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 February 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$247 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$401 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$188 | Average$512 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$204 | Average$412 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$238 | Average$506 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$463 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$338 | Average$520 | FlexibilityNo cancel fee | On-time85% |