$111+ Cheap flights from Oregon to St. Louis (STL)
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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from Oregon to St. Louis 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 Oregon to St. Louis
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Cheapest flights from Oregon to St. LouisExplore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
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.
Wed 8/125:16 pm
PDX
- STL
1 stop24h 07m
Frontier
Wed 8/198:08 pm
STL
- PDX
1 stop22h 49m
Frontier
Deal found 5/11![Frontier logo]()
$220
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Mon 6/88:08 pm
STL
- PDX
1 stop22h 27m
Frontier
Deal found 5/12![Frontier logo]()
$254
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Frontier
Sun 6/79:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/12![Frontier logo]()
$258
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.
Mon 6/298:42 pm
PDX
- STL
1 stop20h 09m
Frontier
Fri 7/37:38 pm
STL
- PDX
1 stop23h 19m
Frontier
Deal found 5/12![Frontier logo]()
$259
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Frontier
Mon 6/88:08 pm
STL
- PDX
1 stop22h 27m
Frontier
Deal found 5/12![Frontier logo]()
$260
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.
Tue 9/11:04 pm
BOI
- STL
1 stop5h 19m
Frontier
Sat 9/58:08 pm
STL
- BOI
1 stop17h 01m
Frontier
Deal found 5/14![Frontier logo]()
$262
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/212:26 pm
PDX
- STL
1 stop28h 27m
Frontier
Mon 7/68:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Deal found 5/12![Frontier logo]()
$265
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.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Multiple Airlines
Sun 6/75:33 pm
STL
- PDX
Nonstop4h 17m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$269
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Sun 5/319:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/12![Frontier logo]()
$280
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/56:59 pm
PDX
- STL
1 stop17h 08m
Frontier
Tue 7/78:08 pm
STL
- PDX
1 stop22h 23m
Frontier
Deal found 5/13![Frontier logo]()
$290
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/129:03 pm
PDX
- STL
1 stop23h 36m
Frontier
Wed 11/185:32 pm
STL
- PDX
1 stop28h 36m
Frontier
Deal found 5/13![Frontier logo]()
$292
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Sat 6/65:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$297
Best flights from Oregon to St. LouisDiscover carefully curated flight deals from Oregon to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from Oregon to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
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.
Mon 6/812:33 am
PDX
- STL
1 stop8h 00m
Delta
Fri 6/127:55 pm
STL
- PDX
1 stop5h 51m
Delta
Deal found 5/13![Delta logo]()
$318
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:00 am
PDX
- STL
1 stop5h 40m
United Airlines
Tue 9/155:10 am
STL
- PDX
1 stop6h 11m
United Airlines
Deal found 5/13![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:50 am
PDX
- STL
2 stops9h 55m
Southwest
Mon 7/2012:40 pm
STL
- PDX
1 stop8h 20m
Southwest
Deal found 5/16![Southwest logo]()
$324
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.
Fri 6/510:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Mon 6/85:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$348
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:05 pm
BOI
- STL
1 stop6h 54m
American Airlines
Sun 6/75:29 am
STL
- BOI
1 stop6h 49m
American Airlines
Deal found 5/11![American Airlines logo]()
$414
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.
Fri 6/1211:15 pm
PDX
- STL
1 stop8h 17m
Delta
Sat 6/205:00 pm
STL
- PDX
1 stop7h 40m
Delta
Deal found 5/11![Delta logo]()
$339
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/24:19 pm
BOI
- STL
1 stop6h 35m
Alaska Airlines
Sat 6/64:12 pm
STL
- BOI
1 stop8h 46m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$357
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.
Fri 6/511:30 pm
PDX
- STL
1 stop6h 15m
Southwest
Sun 6/74:45 pm
STL
- PDX
Nonstop4h 05m
Southwest
Deal found 5/12![Southwest logo]()
$357
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.
Wed 7/812:35 pm
PDX
- STL
2 stops8h 55m
Southwest
Thu 7/236:30 pm
STL
- PDX
1 stop7h 25m
Southwest
Deal found 5/14![Southwest logo]()
$363
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.
Wed 6/105:20 am
MFR
- STL
1 stop6h 16m
Delta
Tue 6/162:28 pm
STL
- MFR
2 stops10h 44m
Delta
Deal found 5/11![Delta logo]()
$364
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Wed 6/244:06 pm
BOI
- STL
1 stop6h 53m
American Airlines
Sun 6/285:29 am
STL
- BOI
1 stop6h 49m
American Airlines
Deal found 5/15![American Airlines logo]()
$435
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.
Fri 5/2912:36 pm
MFR
- STL
1 stop26h 01m
Alaska Airlines
Tue 6/25:33 pm
STL
- MFR
1 stop7h 06m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$399
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.
Mon 8/33:15 pm
PDX
- STL
1 stop7h 20m
Southwest
Mon 8/3111:55 am
STL
- PDX
2 stops9h 25m
Southwest
Deal found 5/13![Southwest logo]()
$363
This Delta deal was found by Cheapflights users on 5/15. 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 6/235:24 pm
PDX
- STL
1 stop5h 19m
Delta
Sat 6/276:21 am
STL
- PDX
1 stop8h 19m
Delta
Deal found 5/15![Delta logo]()
$369
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.
Thu 6/1812:38 pm
EUG
- STL
1 stop6h 52m
United Airlines
Sun 6/216:00 am
STL
- EUG
1 stop7h 37m
United Airlines
Deal found 5/14![United Airlines logo]()
$470
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.
Tue 10/201:49 pm
EUG
- STL
1 stop8h 10m
Alaska Airlines
Tue 10/277:00 am
STL
- EUG
1 stop8h 12m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$411
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.
Wed 6/36:15 am
MFR
- STL
2 stops10h 48m
Delta
Sat 6/138:00 am
STL
- MFR
2 stops10h 44m
Delta
Deal found 5/13![Delta logo]()
$389
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.
Mon 6/11:45 pm
EUG
- STL
1 stop8h 09m
Alaska Airlines
Tue 6/25:33 pm
STL
- EUG
1 stop7h 17m
Alaska Airlines
Deal found 5/11![Alaska Airlines logo]()
$415
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 5/278:50 am
PDX
- STL
2 stops9h 30m
Southwest
Fri 5/291:45 pm
STL
- PDX
1 stop12h 25m
Southwest
Deal found 5/11![Southwest logo]()
$419
This United Airlines deal was found by Cheapflights users on 5/15. 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.
Sat 6/65:00 am
RDM
- STL
1 stop5h 42m
United Airlines
Mon 6/295:10 am
STL
- RDM
2 stops11h 41m
United Airlines
Deal found 5/15![United Airlines logo]()
$512
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.
Wed 7/86:01 am
MFR
- STL
2 stops8h 45m
Delta
Tue 7/147:55 pm
STL
- MFR
1 stop5h 59m
Delta
Deal found 5/11![Delta logo]()
$397
This Southwest deal was found by Cheapflights users on 5/15. 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.
Sat 7/115:15 am
PDX
- STL
2 stops8h 30m
Southwest
Fri 7/176:30 pm
STL
- PDX
1 stop7h 25m
Southwest
Deal found 5/15![Southwest logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 5/15. 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.
Mon 8/243:08 pm
EUG
- STL
1 stop6h 51m
Alaska Airlines
Fri 8/285:59 pm
STL
- EUG
1 stop6h 42m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$427
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 5/296:15 am
MFR
- STL
2 stops10h 48m
Delta
Tue 6/25:36 pm
STL
- MFR
2 stops8h 06m
Delta
Deal found 5/14![Delta logo]()
$409
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/52:25 pm
EUG
- STL
1 stop6h 00m
Southwest
Sat 11/75:55 am
STL
- EUG
1 stop8h 50m
Southwest
Deal found 5/16![Southwest logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 5/15. 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 6/35:45 am
MFR
- STL
1 stop7h 31m
Alaska Airlines
Sat 6/135:37 pm
STL
- MFR
1 stop7h 22m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$449
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.
Thu 6/46:15 am
MFR
- STL
2 stops10h 48m
Delta
Sat 6/138:00 am
STL
- MFR
2 stops10h 44m
Delta
Deal found 5/12![Delta logo]()
$410
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.
Tue 9/112:35 pm
BOI
- STL
2 stops8h 05m
Southwest
Sat 9/52:25 pm
STL
- BOI
2 stops8h 35m
Southwest
Deal found 5/14![Southwest logo]()
$430
This Alaska Airlines deal was found by Cheapflights users on 5/15. 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 6/44:11 pm
MFR
- STL
1 stop22h 26m
Alaska Airlines
Sat 6/135:37 pm
STL
- MFR
1 stop7h 22m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$449
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.
Tue 10/204:40 pm
EUG
- STL
1 stop5h 56m
Delta
Tue 10/273:42 pm
STL
- EUG
2 stops10h 11m
Delta
Deal found 5/13![Delta logo]()
$416
Last-minute flights from Oregon to St. LouisDiscover last-minute flight deals from Oregon to St. Louis. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to St. Louis. Data last updated May 16, 2026 and is based on user searches.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:46 pm
PDX
- STL
1 stop23h 37m
Frontier
Fri 5/299:06 pm
STL
- PDX
1 stop15h 28m
Frontier
Deal found 5/12![Frontier logo]()
$300
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Sun 5/319:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/12![Frontier logo]()
$280
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.
Sat 5/3012:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Thu 6/49:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/11![Frontier logo]()
$290
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Sat 6/65:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 5/14![Alaska Airlines logo]()
$297
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Frontier
Sun 6/79:06 pm
STL
- PDX
1 stop15h 14m
Frontier
Deal found 5/12![Frontier logo]()
$258
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Frontier
Mon 6/88:08 pm
STL
- PDX
1 stop22h 27m
Frontier
Deal found 5/12![Frontier logo]()
$260
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.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Multiple Airlines
Sun 6/75:33 pm
STL
- PDX
Nonstop4h 17m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$269
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.
Thu 6/410:37 am
PDX
- STL
Nonstop4h 00m
Alaska Airlines
Sun 6/75:33 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$299
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Mon 6/88:08 pm
STL
- PDX
1 stop22h 27m
Frontier
Deal found 5/12![Frontier logo]()
$254
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 6/105:20 pm
PDX
- STL
1 stop23h 33m
Frontier
Tue 6/308:08 pm
STL
- PDX
1 stop22h 27m
Frontier
Deal found 5/14![Frontier logo]()
$313
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:26 pm
PDX
- STL
1 stop28h 27m
Frontier
Wed 6/177:46 pm
STL
- PDX
1 stop26h 01m
Frontier
Deal found 5/13![Frontier logo]()
$310
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.
Mon 6/298:42 pm
PDX
- STL
1 stop20h 09m
Frontier
Fri 7/37:38 pm
STL
- PDX
1 stop23h 19m
Frontier
Deal found 5/12![Frontier logo]()
$259
One-way flights from Oregon to St. LouisSearch for one-way flight options from Oregon to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from Oregon to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/12![Frontier logo]()
$111
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:35 pm
PDX
- STL
1 stop23h 40m
Frontier
Deal found 5/12![Frontier logo]()
$112
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/42:38 pm
PDX
- STL
2 stops40h 17m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$114
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:15 am
PDX
- STL
1 stop6h 56m
Frontier
Deal found 5/12![Frontier logo]()
$125
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 6/612:35 pm
PDX
- STL
1 stop28h 48m
Frontier
Deal found 5/11![Frontier logo]()
$129
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 6/268:42 pm
PDX
- STL
1 stop15h 24m
Frontier
Deal found 5/11![Frontier logo]()
$130
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:46 pm
PDX
- STL
1 stop23h 37m
Frontier
Deal found 5/12![Frontier logo]()
$133
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:15 am
PDX
- STL
1 stop6h 56m
Frontier
Deal found 5/12![Frontier logo]()
$135
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:20 pm
PDX
- STL
2 stops13h 27m
Frontier
Deal found 5/12![Frontier logo]()
$138
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 6/105:20 pm
PDX
- STL
1 stop23h 33m
Frontier
Deal found 5/14![Frontier logo]()
$142
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:20 pm
PDX
- STL
1 stop23h 33m
Frontier
Deal found 5/13![Frontier logo]()
$143
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:38 pm
EUG
- STL
1 stop6h 52m
United Airlines
Deal found 5/12![United Airlines logo]()
$174
Find flight deals from Oregon to St. Louis
Keep the following information in mind while searching for Oregon to St. Louis flight deals. Data was last updated May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $220 (CheapOair) |
One-way from | $111 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $403 |
Good round-trip deal | $384 or less |
Good one-way deal | $144 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Oregon to St. Louis 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 16, 2026.
Use the filters below to find and compare flights from Oregon to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Mon 6/8
12:33 am-10:33 am
1 stop8h 00m
Lambert-St Louis
Fri 6/12
7:55 pm-11:46 pm
1 stop5h 51m
$318
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Sat 9/12
5:00 am-12:40 pm
1 stop5h 40m
Lambert-St Louis
Tue 9/15
5:10 am-9:21 am
1 stop6h 11m
$319
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Tue 7/14
5:50 am-5:45 pm
2 stops9h 55m
Lambert-St Louis
Mon 7/20
12:40 pm-7:00 pm
1 stop8h 20m
$324
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Fri 6/12
11:15 pm-9:32 am
1 stop8h 17m
Lambert-St Louis
Sat 6/20
5:00 pm-10:40 pm
1 stop7h 40m
$339
Quickest round-trip
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Fri 6/5
10:37 am-4:37 pm
Nonstop4h 00m
Lambert-St Louis
Mon 6/8
5:33 pm-7:50 pm
Nonstop4h 17m
$348
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Tue 6/2
4:19 pm-11:54 pm
1 stop6h 35m
Lambert-St Louis
Sat 6/6
4:12 pm-11:58 pm
1 stop8h 46m
$357
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Fri 6/5
11:30 pm-7:45 am
1 stop6h 15m
Lambert-St Louis
Sun 6/7
4:45 pm-6:50 pm
Nonstop4h 05m
$357
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Wed 7/8
12:35 pm-11:30 pm
2 stops8h 55m
Lambert-St Louis
Thu 7/23
6:30 pm-11:55 pm
1 stop7h 25m
$363
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Mon 8/3
3:15 pm-12:35 am
1 stop7h 20m
Lambert-St Louis
Mon 8/31
11:55 am-7:20 pm
2 stops9h 25m
$363
MedfordSt. Louis
MFR - STL
MFRSTL
Medford
Wed 6/10
5:20 am-1:36 pm
1 stop6h 16m
Lambert-St Louis
Tue 6/16
2:28 pm-11:12 pm
2 stops10h 44m
$364
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Oregon to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Oregon with our price prediction graph.
PDX-STL
BOI-STL
MFR-STL
EUG-STL
RDM-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Oregon to St. Louis
USOR-STL
PDX-STL
BOI-STL
MFR-STL
EUG-STL
How far ahead should I book a flight from Oregon to St. Louis?
The best time to book flights from Oregon to St. Louis is 78 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Oregon to St. Louis?
Currently, November is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $114). Flying from Oregon to St. Louis in April is currently the most expensive (average of $185). 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.
Weekly flight availability from Oregon to St. Louis
Explore weekly flight availability from Oregon to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 16, 2026.
The most flights from USOR to STL are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Oregon to St. Louis?
Related info for your journey
Find useful and relevant information for your journey from Oregon to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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.
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Oregon to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Oregon and St. Louis flights
Browse other Oregon and St. Louis flight options. Last updated on May 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Oregon to St. Louis flights
Consider these flights traveling from Oregon to St. Louis.
Top 6 airlines flying from Oregon to St. Louis
Discover the top 6 airlines that operate flights from Oregon to St. Louis. 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$282 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$354 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$197 | Average$446 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$228 | Average$397 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$230 | Average$490 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$437 | FlexibilityNo cancel fee | On-time63% |