$123+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Jun 14 — Jun 211
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 May 15, 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 May 15, 2026.
This CheapOair deal was found by Cheapflights users on 5/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Sun 6/211:25 pm
BOI
- STL
1 stop28h 28m
Frontier
Deal found 5/10![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 5/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Sun 6/141:25 pm
BOI
- STL
1 stop28h 28m
Frontier
Deal found 5/10![Frontier logo]()
$280
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Mon 7/206:59 pm
PDX
- STL
1 stop21h 06m
Frontier
Deal found 5/10![Frontier logo]()
$282
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:51 pm
STL
- PDX
1 stop17h 29m
Frontier
Wed 6/105:20 pm
PDX
- STL
1 stop23h 33m
Frontier
Deal found 5/10![Frontier logo]()
$283
This Expedia deal was found by Cheapflights users on 5/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2012:46 pm
STL
- PDX
1 stop9h 53m
Frontier
Sun 9/273:22 pm
PDX
- STL
1 stop25h 53m
Frontier
Deal found 5/11![Frontier logo]()
$290
This Orbitz deal was found by Cheapflights users on 5/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:46 pm
STL
- PDX
1 stop9h 53m
Multiple Airlines
Mon 9/2111:15 am
PDX
- STL
Nonstop3h 48m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$295
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:38 pm
STL
- PDX
1 stop23h 19m
Frontier
Mon 6/228:42 pm
PDX
- STL
1 stop20h 09m
Frontier
Deal found 5/10![Frontier logo]()
$297
This Expedia deal was found by Cheapflights users on 5/12. 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.
Tue 9/85:59 pm
STL
- PDX
Nonstop4h 10m
Alaska Airlines
Thu 9/1011:15 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$299
This Expedia deal was found by Cheapflights users on 5/13. 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 9/255:59 pm
STL
- PDX
Nonstop4h 10m
Multiple Airlines
Sun 10/43:22 pm
PDX
- STL
1 stop25h 53m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$300
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:08 pm
STL
- PDX
1 stop22h 45m
Frontier
Sun 8/96:59 pm
PDX
- STL
1 stop17h 08m
Frontier
Deal found 5/12![Frontier logo]()
$301
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:06 pm
STL
- PDX
1 stop15h 28m
Frontier
Sat 5/3012:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/11![Frontier logo]()
$302
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:30 pm
STL
- PDX
1 stop17h 50m
Frontier
Mon 5/2512:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/10![Frontier logo]()
$305
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 May 15, 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 May 15, 2026.
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:30 pm
STL
- PDX
1 stop7h 25m
Southwest
Fri 7/319:20 pm
PDX
- STL
1 stop8h 50m
Southwest
Deal found 5/13![Southwest logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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 10/287:00 am
STL
- MFR
1 stop7h 46m
Alaska Airlines
Sat 10/311:23 pm
MFR
- STL
1 stop8h 36m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 5/14. 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 7/157:55 pm
STL
- PDX
1 stop5h 49m
Delta
Sat 7/1812:33 am
PDX
- STL
1 stop6h 13m
Delta
Deal found 5/14![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Sun 9/65:10 am
STL
- MFR
2 stops8h 52m
United Airlines
Fri 9/111:08 pm
MFR
- STL
1 stop5h 31m
United Airlines
Deal found 5/11![United Airlines logo]()
$392
This Southwest deal was found by Cheapflights users on 5/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:30 pm
STL
- PDX
1 stop7h 25m
Southwest
Mon 8/35:30 am
PDX
- STL
1 stop8h 35m
Southwest
Deal found 5/14![Southwest logo]()
$348
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:56 pm
STL
- MFR
1 stop15h 55m
Alaska Airlines
Thu 8/135:15 am
MFR
- STL
1 stop9h 22m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 5/12. 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.
Sat 6/65:00 pm
STL
- RDM
1 stop7h 14m
Delta
Mon 6/87:25 pm
RDM
- STL
2 stops11h 17m
Delta
Deal found 5/12![Delta logo]()
$412
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:50 pm
STL
- PDX
1 stop12h 20m
Southwest
Tue 8/1111:35 am
PDX
- STL
2 stops7h 35m
Southwest
Deal found 5/13![Southwest logo]()
$398
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:41 pm
STL
- RDM
1 stop6h 18m
Alaska Airlines
Tue 6/91:53 pm
RDM
- STL
1 stop8h 01m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 5/11. 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.
Thu 5/285:10 am
STL
- PDX
1 stop6h 37m
United Airlines
Wed 6/311:05 am
PDX
- STL
2 stops10h 24m
United Airlines
Deal found 5/11![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 5/11. 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.
Mon 6/87:55 pm
STL
- BOI
1 stop5h 14m
Delta
Mon 6/1511:45 pm
BOI
- STL
1 stop7h 31m
Delta
Deal found 5/11![Delta logo]()
$437
This Southwest deal was found by Cheapflights users on 5/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:35 am
STL
- BOI
1 stop7h 15m
Southwest
Wed 9/306:00 am
BOI
- STL
1 stop8h 05m
Southwest
Deal found 5/11![Southwest logo]()
$403
This Alaska Airlines deal was found by Cheapflights users on 5/14. 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.
Tue 8/256:00 am
STL
- BOI
1 stop7h 35m
Alaska Airlines
Wed 8/266:20 am
BOI
- STL
1 stop6h 44m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Mon 6/15:29 pm
STL
- BOI
1 stop6h 27m
United Airlines
Sat 6/65:46 pm
BOI
- STL
1 stop5h 11m
United Airlines
Deal found 5/14![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 5/10. 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.
Sat 5/305:00 pm
STL
- EUG
1 stop7h 31m
Delta
Wed 6/35:10 am
EUG
- STL
1 stop6h 22m
Delta
Deal found 5/10![Delta logo]()
$442
This Southwest deal was found by Cheapflights users on 5/12. 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.
Wed 9/167:00 am
STL
- BOI
2 stops8h 00m
Southwest
Wed 9/2312:35 pm
BOI
- STL
2 stops8h 35m
Southwest
Deal found 5/12![Southwest logo]()
$413
This Alaska Airlines deal was found by Cheapflights users on 5/13. 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 5/305:33 pm
STL
- EUG
1 stop7h 17m
Alaska Airlines
Wed 6/34:00 pm
EUG
- STL
1 stop22h 37m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$442
This Delta deal was found by Cheapflights users on 5/11. 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.
Sat 9/266:59 pm
STL
- BOI
1 stop5h 57m
Delta
Sun 9/275:45 pm
BOI
- STL
1 stop5h 51m
Delta
Deal found 5/11![Delta logo]()
$452
This Southwest deal was found by Cheapflights users on 5/12. 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.
Wed 6/176:55 pm
STL
- BOI
1 stop6h 30m
Southwest
Mon 6/225:55 pm
BOI
- STL
1 stop6h 55m
Southwest
Deal found 5/12![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 5/14. 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.
Sat 5/308:00 am
STL
- EUG
2 stops11h 56m
United Airlines
Wed 6/312:38 pm
EUG
- STL
1 stop6h 52m
United Airlines
Deal found 5/14![United Airlines logo]()
$528
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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.
Thu 6/45:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Sun 6/710:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 5/10. 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.
Tue 6/307:55 pm
STL
- MFR
1 stop6h 02m
Delta
Wed 7/86:00 am
MFR
- STL
1 stop5h 33m
Delta
Deal found 5/10![Delta logo]()
$458
This Southwest deal was found by Cheapflights users on 5/10. 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 6/176:20 pm
STL
- BOI
1 stop7h 10m
Southwest
Sat 6/206:00 pm
BOI
- STL
1 stop6h 00m
Southwest
Deal found 5/10![Southwest logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:37 pm
STL
- PDX
Nonstop4h 10m
Alaska Airlines
Fri 7/3110:59 pm
PDX
- STL
1 stop7h 32m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 5/14. 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.
Fri 6/52:27 pm
STL
- RDM
2 stops10h 25m
Delta
Thu 6/117:25 pm
RDM
- STL
2 stops11h 17m
Delta
Deal found 5/14![Delta logo]()
$468
This Southwest deal was found by Cheapflights users on 5/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/204:45 pm
STL
- BOI
2 stops8h 40m
Southwest
Tue 7/76:00 am
BOI
- STL
2 stops8h 10m
Southwest
Deal found 5/14![Southwest logo]()
$455
This Expedia deal was found by Cheapflights users on 5/12. 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.
Fri 5/295:33 pm
STL
- RDM
1 stop7h 13m
Alaska Airlines
Sat 5/301:53 pm
RDM
- STL
1 stop8h 01m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 5/12. 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 5/277:59 pm
STL
- MFR
1 stop5h 43m
Delta
Sun 5/315:15 am
MFR
- STL
1 stop6h 17m
Delta
Deal found 5/12![Delta logo]()
$472
This Southwest deal was found by Cheapflights users on 5/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:40 pm
STL
- BOI
2 stops8h 05m
Southwest
Wed 6/173:00 pm
BOI
- STL
2 stops7h 40m
Southwest
Deal found 5/13![Southwest logo]()
$461
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:37 pm
STL
- PDX
Nonstop4h 10m
Alaska Airlines
Fri 7/1010:45 am
PDX
- STL
1 stop9h 04m
Alaska Airlines
Deal found 5/10![Alaska Airlines logo]()
$468
Last-minute flights from St. Louis to OregonDiscover last-minute flight deals from St. Louis to Oregon. Data last updated May 15, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Oregon. Data last updated May 15, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:30 pm
STL
- PDX
1 stop17h 50m
Frontier
Mon 5/2512:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/10![Frontier logo]()
$305
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:06 pm
STL
- PDX
1 stop15h 28m
Frontier
Sat 5/3012:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/11![Frontier logo]()
$302
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:51 pm
STL
- PDX
1 stop17h 29m
Frontier
Wed 6/105:20 pm
PDX
- STL
1 stop23h 33m
Frontier
Deal found 5/10![Frontier logo]()
$283
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Mon 6/812:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/12![Frontier logo]()
$321
This Delta deal was found by Cheapflights users on 5/13. 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.
Fri 6/57:59 pm
STL
- PDX
1 stop5h 45m
Delta
Wed 6/105:24 pm
PDX
- STL
1 stop5h 19m
Delta
Deal found 5/13![Delta logo]()
$319
This Delta deal was found by Cheapflights users on 5/13. 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.
Sat 6/66:21 am
STL
- PDX
1 stop6h 32m
Delta
Thu 6/115:24 pm
PDX
- STL
1 stop5h 19m
Delta
Deal found 5/13![Delta logo]()
$318
This Expedia deal was found by Cheapflights users on 5/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:33 pm
STL
- PDX
Nonstop4h 17m
Multiple Airlines
Mon 6/811:15 am
PDX
- STL
1 stop6h 56m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$324
This CheapOair deal was found by Cheapflights users on 5/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Sun 6/141:25 pm
BOI
- STL
1 stop28h 28m
Frontier
Deal found 5/10![Frontier logo]()
$280
This CheapOair deal was found by Cheapflights users on 5/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:08 pm
STL
- BOI
1 stop17h 22m
Frontier
Sun 6/211:25 pm
BOI
- STL
1 stop28h 28m
Frontier
Deal found 5/10![Frontier logo]()
$240
This Booking.com deal was found by Cheapflights users on 5/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/177:46 pm
STL
- PDX
1 stop26h 01m
Frontier
Mon 6/228:42 pm
PDX
- STL
1 stop20h 09m
Frontier
Deal found 5/14![Frontier logo]()
$311
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:38 pm
STL
- PDX
1 stop23h 19m
Frontier
Mon 6/228:42 pm
PDX
- STL
1 stop20h 09m
Frontier
Deal found 5/10![Frontier logo]()
$297
This Gotogate deal was found by Cheapflights users on 5/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:56 pm
STL
- PDX
1 stop6h 51m
Frontier
Thu 7/212:26 pm
PDX
- STL
1 stop28h 27m
Frontier
Deal found 5/12![Frontier logo]()
$320
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 May 15, 2026.
Search for one-way flight options from St. Louis to Oregon. Find affordable one-way fares based on user searches. Data last updated May 15, 2026.
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:08 pm
STL
- PDX
1 stop22h 38m
Frontier
Deal found 5/11![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 5/10. 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.
Sun 6/142:56 pm
STL
- PDX
1 stop6h 51m
Frontier
Deal found 5/10![Frontier logo]()
$125
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/10![Frontier logo]()
$129
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/137:38 pm
STL
- PDX
1 stop23h 19m
Frontier
Deal found 5/11![Frontier logo]()
$130
This Expedia deal was found by Cheapflights users on 5/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:10 pm
STL
- PDX
1 stop20h 17m
Frontier
Deal found 5/11![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/125:06 pm
STL
- PDX
2 stops46h 42m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$133
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:08 pm
STL
- PDX
1 stop22h 49m
Frontier
Deal found 5/11![Frontier logo]()
$136
This CheapOair deal was found by Cheapflights users on 5/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 5/11![Frontier logo]()
$136
This Trip.com deal was found by Cheapflights users on 5/14. 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 6/107:03 pm
STL
- PDX
1 stop26h 44m
Frontier
Deal found 5/14![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/55:27 pm
STL
- PDX
2 stops46h 21m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$143
This Trip.com deal was found by Cheapflights users on 5/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:56 pm
STL
- PDX
1 stop6h 51m
Frontier
Deal found 5/11![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 5/10. 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 6/122:56 pm
STL
- PDX
1 stop6h 51m
Frontier
Deal found 5/10![Frontier logo]()
$145
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 May 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $240 (CheapOair) |
One-way from | $123 (Trip.com) |
Popular in | July |
Cheapest in | January |
Average price | $341 |
Good round-trip deal | $332 or less |
Good one-way deal | $128 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 May 15, 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
Thu 7/23
6:30 pm-11:55 pm
1 stop7h 25m
Portland
Fri 7/31
9:20 pm-8:10 am
1 stop8h 50m
$319
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Thu 7/30
6:30 pm-11:55 pm
1 stop7h 25m
Portland
Mon 8/3
5:30 am-4:05 pm
1 stop8h 35m
$348
St. LouisMedford
STL - MFR
STLMFR
Lambert-St Louis
Wed 10/28
7:00 am-12:46 pm
1 stop7h 46m
Medford
Sat 10/31
1:23 pm-11:59 pm
1 stop8h 36m
$359
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 7/15
7:55 pm-11:44 pm
1 stop5h 49m
Portland
Sat 7/18
12:33 am-8:46 am
1 stop6h 13m
$389
St. LouisMedford
STL - MFR
STLMFR
Lambert-St Louis
Sun 9/6
5:10 am-12:02 pm
2 stops8h 52m
Medford
Fri 9/11
1:08 pm-8:39 pm
1 stop5h 31m
$392
St. LouisPortland
STL - PDX
STLPDX
Lambert-St Louis
Wed 8/5
12:50 pm-11:10 pm
1 stop12h 20m
Portland
Tue 8/11
11:35 am-9:10 pm
2 stops7h 35m
$398
St. LouisMedford
STL - MFR
STLMFR
Lambert-St Louis
Tue 8/11
7:56 pm-9:51 am
1 stop15h 55m
Medford
Thu 8/13
5:15 am-4:37 pm
1 stop9h 22m
$399
St. LouisRedmond
STL - RDM
STLRDM
Lambert-St Louis
Tue 6/2
7:41 pm-11:59 pm
1 stop6h 18m
Bend/Redmond
Tue 6/9
1:53 pm-11:54 pm
1 stop8h 01m
$403
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Wed 9/23
8:35 am-2:50 pm
1 stop7h 15m
Boise Air Term. Gowen Fld
Wed 9/30
6:00 am-3:05 pm
1 stop8h 05m
$403
St. LouisBoise
STL - BOI
STLBOI
Lambert-St Louis
Tue 8/25
6:00 am-12:35 pm
1 stop7h 35m
Boise Air Term. Gowen Fld
Wed 8/26
6:20 am-2:04 pm
1 stop6h 44m
$403
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-EUG
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-BOI
STL-PDX
STL-EUG
STL-MFR
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.
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 May 15, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 31% 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?
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 May 15, 2026.
Peruse reviews from past customers who have flown with Southwest,Alaska Airlines, 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
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 May 15, 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 May 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$261 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$186 | Average$375 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$411 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$209 | Average$389 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$228 | Average$441 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$244 | Average$469 | FlexibilityNo cancel fee | On-time69% |