$66+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Mar 14 — Mar 211
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
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 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 February 12, 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 February 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:48 am
PDX
- STL
1 stop29h 24m
Frontier
Sat 5/168:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Deal found 2/10![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:48 am
PDX
- STL
1 stop29h 24m
Frontier
Sat 4/188:12 pm
STL
- PDX
2 stops17h 45m
Frontier
Deal found 2/10![Frontier logo]()
$201
This Orbitz deal was found by Cheapflights users on 2/10. 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.
Thu 5/2111:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Tue 5/266:20 pm
STL
- PDX
Nonstop4h 17m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$229
This Expedia deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/112:52 pm
PDX
- STL
1 stop24h 29m
Frontier
Sun 5/38:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Deal found 2/9![Frontier logo]()
$232
This CheapOair deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:18 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Wed 5/277:56 pm
STL
- PDX
1 stop6h 15m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:48 am
PDX
- STL
2 stops24h 24m
Frontier
Mon 4/208:12 pm
STL
- PDX
1 stop18h 50m
Frontier
Deal found 2/10![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Tue 4/214:55 pm
STL
- PDX
2 stops42h 04m
Frontier
Deal found 2/9![Frontier logo]()
$246
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:01 pm
BOI
- STL
1 stop7h 24m
Delta
Tue 3/313:05 pm
STL
- BOI
1 stop7h 04m
Delta
Deal found 2/9![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:44 pm
PDX
- STL
1 stop8h 51m
American Airlines
Mon 3/96:00 am
STL
- PDX
1 stop6h 48m
American Airlines
Deal found 2/9![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:30 pm
BOI
- STL
1 stop8h 35m
Delta
Sat 3/285:00 pm
STL
- BOI
1 stop6h 11m
Delta
Deal found 2/8![Delta logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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.
Sat 4/111:07 pm
EUG
- STL
1 stop8h 52m
Alaska Airlines
Tue 4/213:50 pm
STL
- EUG
1 stop6h 41m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 2/11. 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 5/95:21 am
RDM
- STL
1 stop6h 11m
Delta
Tue 5/127:59 pm
STL
- RDM
1 stop5h 32m
Delta
Deal found 2/11![Delta logo]()
$277
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 February 12, 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 February 12, 2026.
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Fri 3/1311:59 pm
PDX
- STL
1 stop8h 37m
United Airlines
Fri 3/206:05 pm
STL
- PDX
1 stop6h 55m
United Airlines
Deal found 2/11![United Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/41:52 pm
PDX
- STL
1 stop7h 30m
American Airlines
Mon 3/94:13 pm
STL
- PDX
1 stop8h 56m
American Airlines
Deal found 2/10![American Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:55 pm
PDX
- STL
1 stop8h 20m
Southwest
Sun 5/314:40 pm
STL
- PDX
1 stop9h 25m
Southwest
Deal found 2/9![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:15 pm
PDX
- STL
1 stop8h 27m
Delta
Sat 4/1812:23 pm
STL
- PDX
1 stop7h 09m
Delta
Deal found 2/11![Delta logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 4/1611:48 am
PDX
- STL
2 stops24h 24m
Frontier
Sat 4/188:12 pm
STL
- PDX
1 stop16h 51m
Frontier
Deal found 2/11![Frontier logo]()
$251
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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.
Tue 4/141:07 pm
EUG
- STL
1 stop8h 52m
Alaska Airlines
Sat 4/187:00 am
STL
- EUG
1 stop7h 30m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$277
This Expedia deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:53 am
BOI
- STL
1 stop6h 19m
Multiple Airlines
Sun 4/197:00 am
STL
- BOI
2 stops15h 59m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:15 pm
PDX
- STL
1 stop8h 31m
Delta
Sat 4/43:05 pm
STL
- PDX
1 stop7h 20m
Delta
Deal found 2/9![Delta logo]()
$249
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:45 am
PDX
- STL
1 stop5h 38m
Delta
Fri 4/246:45 pm
STL
- PDX
1 stop7h 08m
Delta
Deal found 2/8![Delta logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 4/151:07 pm
EUG
- STL
1 stop8h 52m
Alaska Airlines
Sat 4/187:00 am
STL
- EUG
1 stop7h 30m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/101:17 pm
EUG
- STL
1 stop8h 17m
United Airlines
Tue 3/176:51 am
STL
- EUG
1 stop7h 24m
United Airlines
Deal found 2/10![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2812:30 am
PDX
- STL
1 stop6h 31m
Delta
Sat 4/45:00 pm
STL
- PDX
1 stop7h 53m
Delta
Deal found 2/9![Delta logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:25 am
PDX
- STL
Nonstop3h 48m
Alaska Airlines
Tue 8/116:20 pm
STL
- PDX
Nonstop4h 10m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:51 pm
EUG
- STL
2 stops11h 44m
United Airlines
Sat 4/188:54 am
STL
- EUG
1 stop6h 10m
United Airlines
Deal found 2/11![United Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 2/11. 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 3/186:05 am
PDX
- STL
1 stop6h 19m
Delta
Mon 3/236:12 pm
STL
- PDX
1 stop7h 42m
Delta
Deal found 2/11![Delta logo]()
$259
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:13 pm
RDM
- STL
1 stop5h 13m
United Airlines
Thu 3/125:15 am
STL
- RDM
2 stops8h 56m
United Airlines
Deal found 2/9![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:10 am
BOI
- STL
1 stop7h 35m
Southwest
Tue 7/143:05 pm
STL
- BOI
1 stop6h 40m
Southwest
Deal found 2/9![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/21:45 pm
PDX
- STL
1 stop8h 36m
Delta
Mon 4/66:12 pm
STL
- PDX
1 stop7h 42m
Delta
Deal found 2/11![Delta logo]()
$259
This CheapOair deal was found by Cheapflights users on 2/10. 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.
Sat 5/166:35 am
BOI
- STL
1 stop8h 15m
Alaska Airlines
Mon 5/187:56 pm
STL
- BOI
1 stop16h 06m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:30 pm
BOI
- STL
1 stop8h 35m
Delta
Sat 3/285:00 pm
STL
- BOI
1 stop6h 11m
Delta
Deal found 2/8![Delta logo]()
$268
This Travelocity deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/164:11 pm
MFR
- STL
1 stop22h 55m
Alaska Airlines
Sat 5/237:56 pm
STL
- MFR
1 stop18h 52m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:25 am
RDM
- STL
2 stops13h 18m
United Airlines
Mon 5/112:35 pm
STL
- RDM
1 stop8h 23m
United Airlines
Deal found 2/8![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:13 am
MFR
- STL
2 stops10h 12m
Delta
Thu 3/266:12 pm
STL
- MFR
1 stop7h 35m
Delta
Deal found 2/8![Delta logo]()
$278
This Orbitz deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:32 pm
BOI
- STL
1 stop19h 41m
Alaska Airlines
Tue 7/146:20 pm
STL
- BOI
1 stop6h 25m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:45 pm
BOI
- STL
1 stop5h 13m
United Airlines
Tue 7/145:15 am
STL
- BOI
1 stop5h 34m
United Airlines
Deal found 2/9![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 2/11. 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.
Tue 4/145:15 am
EUG
- STL
1 stop6h 08m
Delta
Wed 4/152:20 pm
STL
- EUG
2 stops10h 50m
Delta
Deal found 2/11![Delta logo]()
$282
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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.
Fri 5/81:52 pm
RDM
- STL
1 stop8h 07m
Alaska Airlines
Wed 5/137:56 pm
STL
- RDM
1 stop6h 20m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 2/10. 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 3/1011:30 pm
BOI
- STL
1 stop8h 35m
Delta
Tue 3/173:05 pm
STL
- BOI
1 stop7h 04m
Delta
Deal found 2/10![Delta logo]()
$287
This Alaska Airlines deal was found by Cheapflights users on 2/11. 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 5/131:31 pm
RDM
- STL
1 stop8h 26m
Alaska Airlines
Mon 5/187:56 pm
STL
- RDM
1 stop6h 20m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 2/11. 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 4/1112:40 pm
EUG
- STL
1 stop6h 51m
Delta
Thu 4/166:45 pm
STL
- EUG
2 stops17h 44m
Delta
Deal found 2/11![Delta logo]()
$296
Last-minute flights from Oregon to St. LouisDiscover last-minute flight deals from Oregon to St. Louis. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to St. Louis. Data last updated February 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:13 pm
RDM
- STL
1 stop5h 13m
United Airlines
Thu 3/125:15 am
STL
- RDM
2 stops8h 56m
United Airlines
Deal found 2/9![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:44 pm
PDX
- STL
1 stop8h 51m
American Airlines
Mon 3/96:00 am
STL
- PDX
1 stop6h 48m
American Airlines
Deal found 2/9![American Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:40 pm
EUG
- STL
1 stop8h 19m
American Airlines
Wed 3/117:58 am
STL
- EUG
1 stop7h 04m
American Airlines
Deal found 2/9![American Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:52 pm
PDX
- STL
1 stop28h 19m
Frontier
Mon 3/238:12 pm
STL
- PDX
2 stops38h 46m
Frontier
Deal found 2/10![Frontier logo]()
$255
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:52 pm
PDX
- STL
1 stop5h 42m
United Airlines
Tue 3/175:15 am
STL
- PDX
2 stops9h 18m
United Airlines
Deal found 2/10![United Airlines logo]()
$254
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/101:17 pm
EUG
- STL
1 stop8h 17m
United Airlines
Tue 3/176:51 am
STL
- EUG
1 stop7h 24m
United Airlines
Deal found 2/10![United Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:59 pm
BOI
- STL
2 stops9h 35m
United Airlines
Tue 3/176:25 am
STL
- BOI
1 stop6h 48m
United Airlines
Deal found 2/10![United Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 2/10. 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 3/1011:30 pm
BOI
- STL
1 stop8h 35m
Delta
Tue 3/173:05 pm
STL
- BOI
1 stop7h 04m
Delta
Deal found 2/10![Delta logo]()
$287
This Delta deal was found by Cheapflights users on 2/11. 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 3/186:05 am
PDX
- STL
1 stop6h 19m
Delta
Mon 3/236:12 pm
STL
- PDX
1 stop7h 42m
Delta
Deal found 2/11![Delta logo]()
$259
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:30 pm
BOI
- STL
1 stop8h 35m
Delta
Sat 3/285:00 pm
STL
- BOI
1 stop6h 11m
Delta
Deal found 2/8![Delta logo]()
$268
This Delta deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:13 am
MFR
- STL
2 stops10h 12m
Delta
Thu 3/266:12 pm
STL
- MFR
1 stop7h 35m
Delta
Deal found 2/8![Delta logo]()
$278
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/283:01 pm
BOI
- STL
1 stop7h 24m
Delta
Tue 3/313:05 pm
STL
- BOI
1 stop7h 04m
Delta
Deal found 2/9![Delta logo]()
$247
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 February 12, 2026.
Search for one-way flight options from Oregon to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/811:48 am
PDX
- STL
1 stop29h 24m
Frontier
Deal found 2/10![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/291:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Deal found 2/9![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 2/11. 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.
Sun 3/812:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/11![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:48 am
PDX
- STL
1 stop29h 24m
Frontier
Deal found 2/10![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:27 pm
PDX
- STL
1 stop28h 45m
Frontier
Deal found 2/9![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Deal found 2/10![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1512:04 pm
PDX
- STL
1 stop19h 45m
Frontier
Deal found 2/9![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 4/1911:48 am
PDX
- STL
1 stop29h 24m
Frontier
Deal found 2/11![Frontier logo]()
$100
This Orbitz deal was found by Cheapflights users on 2/10. 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 4/1712:52 pm
PDX
- STL
1 stop24h 29m
Frontier
Deal found 2/10![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:48 am
PDX
- STL
2 stops41h 02m
Frontier
Deal found 2/10![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:48 am
PDX
- STL
1 stop29h 24m
Frontier
Deal found 2/9![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:48 pm
PDX
- STL
1 stop27h 24m
Frontier
Deal found 2/11![Frontier logo]()
$105
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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Kiwi.com) |
One-way from | $66 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $376 |
Good round-trip deal | $249 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 February 12, 2026.
Use the filters below to find and compare flights from Oregon to St. Louis that are best for you.
Fly from
Oregon
Fly to
St. Louis
Route
Depart
Return
Price
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Fri 3/13
11:59 pm-10:36 am
1 stop8h 37m
Lambert-St Louis
Fri 3/20
6:05 pm-11:00 pm
1 stop6h 55m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Wed 3/4
1:52 pm-11:22 pm
1 stop7h 30m
Lambert-St Louis
Mon 3/9
4:13 pm-11:09 pm
1 stop8h 56m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 5/28
11:55 pm-10:15 am
1 stop8h 20m
Lambert-St Louis
Sun 5/31
4:40 pm-12:05 am
1 stop9h 25m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 4/16
11:15 pm-9:42 am
1 stop8h 27m
Lambert-St Louis
Sat 4/18
12:23 pm-5:32 pm
1 stop7h 09m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Mon 3/30
11:15 pm-9:46 am
1 stop8h 31m
Lambert-St Louis
Sat 4/4
3:05 pm-8:25 pm
1 stop7h 20m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Tue 4/21
5:45 am-1:23 pm
1 stop5h 38m
Lambert-St Louis
Fri 4/24
6:45 pm-11:53 pm
1 stop7h 08m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Sat 3/28
12:30 am-9:01 am
1 stop6h 31m
Lambert-St Louis
Sat 4/4
5:00 pm-10:53 pm
1 stop7h 53m
$249
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 4/16
11:48 am-2:12 pm
2 stops24h 24m
Lambert-St Louis
Sat 4/18
8:12 pm-11:03 am
1 stop16h 51m
$251
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Wed 3/18
6:05 am-2:24 pm
1 stop6h 19m
Lambert-St Louis
Mon 3/23
6:12 pm-11:54 pm
1 stop7h 42m
$259
PortlandSt. Louis
PDX - STL
PDXSTL
Portland
Thu 4/2
1:45 pm-12:21 am
1 stop8h 36m
Lambert-St Louis
Mon 4/6
6:12 pm-11:54 pm
1 stop7h 42m
$259
Showing 1-10 of 56 results
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
EUG-STL
RDM-STL
MFR-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
EUG-STL
RDM-STL
What is the cheapest month to book a flight from Oregon to St. Louis?
Currently, December is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $165). Flying from Oregon to St. Louis in March is currently the most expensive (average of $249). 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.
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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
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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Alternative routes for Oregon to St. Louis
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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.
Search flights from Oregon to St. Louis by cabin class
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 February 12, 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 February 12, 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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$281 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$396 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$226 | Average$463 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$242 | Average$459 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$248 | Average$424 | FlexibilityNo cancel fee | On-time63% |