$154+ Cheap flights from Oregon to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Dec 12 — Dec 191
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
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 November 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 November 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/101:58 pm -
1 stop18h 59m
Sat 12/127:54 pm -
1 stop19h 09m
Deal found 11/10![Frontier logo]()
$279
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:58 pm -
1 stop18h 59m
Sun 12/62:27 pm -
1 stop23h 26m
Deal found 11/11![Frontier logo]()
$298
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:09 pm -
1 stop15h 57m
Mon 12/77:54 pm -
1 stop22h 16m
Deal found 11/11![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Mon 12/77:51 pm -
2 stops37h 13m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/9![Frontier logo]()
$341
This CheapOair deal was found by Cheapflights users on 11/10. 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.
Thu 12/101:58 pm -
1 stop18h 59m
Sun 12/132:27 pm -
1 stop23h 26m
Deal found 11/10![Frontier logo]()
$345
This Expedia deal was found by Cheapflights users on 11/11. 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.
Sat 12/127:30 am -
1 stop7h 10m
Sat 12/197:03 pm -
1 stop19h 06m
Deal found 11/11![Multiple Airlines logo]()
$350
This Cheapflightsfares deal was found by Cheapflights users on 11/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:58 pm -
1 stop24h 22m
Wed 12/167:54 pm -
1 stop18h 15m
Deal found 11/10![Frontier logo]()
$358
This Cheapflightsfares deal was found by Cheapflights users on 11/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:58 pm -
1 stop24h 22m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/9![Frontier logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Fri 12/1112:51 pm -
2 stops20h 06m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/12![Frontier logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 12/27:10 am -
1 stop9h 01m
Sat 12/54:30 pm -
1 stop7h 14m
Deal found 11/9![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 12/25:00 am -
1 stop5h 53m
Sun 12/62:50 pm -
1 stop8h 36m
Deal found 11/10![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Thu 12/105:00 am -
1 stop5h 53m
Thu 12/178:41 am -
2 stops11h 58m
Deal found 11/10![United Airlines logo]()
$414
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 November 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 November 12, 2026.
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 12/27:10 am -
1 stop9h 01m
Sat 12/54:30 pm -
1 stop7h 14m
Deal found 11/9![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 11/10. 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.
Thu 1/145:05 am -
1 stop6h 21m
Mon 1/187:00 am -
1 stop6h 54m
Deal found 11/10![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/226:08 pm -
1 stop18h 04m
Fri 2/263:10 pm -
1 stop10h 49m
Deal found 11/9![Alaska Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 11/10. 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.
Tue 12/156:40 am -
1 stop8h 45m
Tue 1/56:30 am -
1 stop6h 10m
Deal found 11/10![Southwest logo]()
$419
This American Airlines deal was found by Cheapflights users on 11/11. 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.
Thu 1/142:00 pm -
1 stop7h 55m
Wed 2/102:30 pm -
1 stop7h 11m
Deal found 11/11![American Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 1/135:00 am -
1 stop6h 21m
Sun 1/178:52 am -
1 stop6h 32m
Deal found 11/10![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” 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 2/225:05 am -
1 stop6h 17m
Fri 2/262:12 pm -
2 stops10h 47m
Deal found 11/7![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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 12/41:57 pm -
1 stop8h 02m
Tue 12/86:04 am -
1 stop7h 20m
Deal found 11/10![Alaska Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 11/9. 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 12/36:45 am -
1 stop8h 40m
Wed 12/95:15 pm -
1 stop7h 10m
Deal found 11/9![Southwest logo]()
$424
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 1/1311:17 am -
2 stops8h 25m
Mon 1/187:00 am -
1 stop6h 54m
Deal found 11/10![Delta logo]()
$414
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Sat 12/125:00 am -
1 stop5h 53m
Sat 12/196:09 pm -
1 stop6h 16m
Deal found 11/11![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 11/11. 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.
Thu 12/310:15 am -
2 stops9h 55m
Sun 12/66:10 am -
1 stop6h 30m
Deal found 11/11![Southwest logo]()
$424
This American Airlines deal was found by Cheapflights users on 11/9. 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 12/95:00 am -
1 stop6h 51m
Tue 12/152:31 pm -
1 stop7h 17m
Deal found 11/9![American Airlines logo]()
$485
This Delta deal was found by Cheapflights users on 11/10. 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.
Wed 1/1311:17 am -
2 stops8h 25m
Sun 1/176:05 am -
2 stops12h 27m
Deal found 11/10![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 11/9. 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.
Fri 12/118:00 am -
2 stops9h 10m
Sun 12/137:20 pm -
1 stop6h 55m
Deal found 11/9![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 11/10. 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 12/17:10 am -
1 stop9h 01m
Mon 12/78:40 am -
1 stop6h 38m
Deal found 11/10![United Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/37:43 pm -
1 stop16h 29m
Sat 3/63:11 pm -
1 stop10h 42m
Deal found 11/8![Alaska Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Thu 1/287:00 am -
1 stop9h 17m
Mon 2/13:10 pm -
1 stop8h 22m
Deal found 11/9![United Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 11/9. 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 1/286:40 am -
1 stop6h 10m
Mon 2/112:35 pm -
2 stops11h 00m
Deal found 11/9![Southwest logo]()
$444
This Delta deal was found by Cheapflights users on 11/11. 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 1/146:25 am -
2 stops13h 17m
Wed 2/102:16 pm -
2 stops11h 36m
Deal found 11/11![Delta logo]()
$449
This Delta deal was found by Cheapflights users on 11/9. 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.
Wed 12/96:21 am -
2 stops12h 11m
Tue 12/157:08 am -
2 stops13h 52m
Deal found 11/9![Delta logo]()
$453
This Southwest deal was found by Cheapflights users on 11/11. 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.
Fri 12/2511:40 am -
2 stops8h 20m
Fri 1/16:30 am -
1 stop6h 10m
Deal found 11/11![Southwest logo]()
$453
This United Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” 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 1/37:16 pm -
1 stop7h 55m
Sat 1/94:30 pm -
1 stop6h 45m
Deal found 11/7![United Airlines logo]()
$466
This Delta deal was found by Cheapflights users on 11/8. 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 12/97:00 am -
2 stops12h 28m
Sat 12/126:32 am -
2 stops12h 47m
Deal found 11/8![Delta logo]()
$453
This Southwest deal was found by Cheapflights users on 11/11. 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.
Thu 1/216:40 am -
1 stop6h 10m
Mon 1/256:45 am -
1 stop7h 35m
Deal found 11/11![Southwest logo]()
$459
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Sat 1/235:00 am -
1 stop7h 03m
Tue 1/264:30 pm -
1 stop6h 41m
Deal found 11/11![United Airlines logo]()
$485
This Southwest deal was found by Cheapflights users on 11/11. 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.
Thu 1/146:40 am -
1 stop7h 45m
Mon 1/186:45 pm -
1 stop6h 50m
Deal found 11/11![Southwest logo]()
$459
This Delta deal was found by Cheapflights users on 11/8. 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.
Thu 11/2611:58 am -
1 stop5h 33m
Mon 11/307:00 pm -
1 stop6h 51m
Deal found 11/8![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 12/95:00 am -
1 stop5h 53m
Tue 12/158:40 am -
1 stop6h 15m
Deal found 11/10![United Airlines logo]()
$523
This Delta deal was found by Cheapflights users on 11/11. 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 1/811:19 am -
2 stops8h 23m
Mon 1/116:20 am -
2 stops12h 29m
Deal found 11/11![Delta logo]()
$514
Last-minute flights from Oregon to St. LouisDiscover last-minute flight deals from Oregon to St. Louis. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to St. Louis. Data last updated November 12, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 11/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:58 pm -
1 stop24h 22m
Wed 12/167:54 pm -
1 stop18h 15m
Deal found 11/10![Frontier logo]()
$358
This Cheapflightsfares deal was found by Cheapflights users on 11/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:58 pm -
1 stop24h 22m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/9![Frontier logo]()
$373
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:09 pm -
1 stop15h 57m
Mon 12/77:54 pm -
1 stop22h 16m
Deal found 11/11![Frontier logo]()
$333
This United Airlines deal was found by Cheapflights users on 11/9. 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.
Wed 12/27:10 am -
1 stop9h 01m
Sat 12/54:30 pm -
1 stop7h 14m
Deal found 11/9![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Wed 12/25:00 am -
1 stop5h 53m
Sun 12/62:50 pm -
1 stop8h 36m
Deal found 11/10![United Airlines logo]()
$409
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:58 pm -
1 stop18h 59m
Sun 12/62:27 pm -
1 stop23h 26m
Deal found 11/11![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Mon 12/77:51 pm -
2 stops37h 13m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/9![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/101:58 pm -
1 stop18h 59m
Sat 12/127:54 pm -
1 stop19h 09m
Deal found 11/10![Frontier logo]()
$279
This CheapOair deal was found by Cheapflights users on 11/10. 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.
Thu 12/101:58 pm -
1 stop18h 59m
Sun 12/132:27 pm -
1 stop23h 26m
Deal found 11/10![Frontier logo]()
$345
This United Airlines deal was found by Cheapflights users on 11/10. 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.
Thu 12/105:00 am -
1 stop5h 53m
Thu 12/178:41 am -
2 stops11h 58m
Deal found 11/10![United Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Fri 12/1112:51 pm -
2 stops20h 06m
Mon 12/147:54 pm -
1 stop22h 16m
Deal found 11/12![Frontier logo]()
$384
This Expedia deal was found by Cheapflights users on 11/11. 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.
Sat 12/127:30 am -
1 stop7h 10m
Sat 12/197:03 pm -
1 stop19h 06m
Deal found 11/11![Multiple Airlines logo]()
$350
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 November 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 November 12, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 11/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:58 pm -
1 stop18h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Frontier logo]()
$154
This Trip.com deal was found by Cheapflights users on 11/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:09 pm -
1 stop15h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$165
This Cheapflightsfares deal was found by Cheapflights users on 11/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/284:29 pm -
1 stop15h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/77:51 pm -
2 stops37h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Frontier logo]()
$182
This Cheapflightsfares deal was found by Cheapflights users on 11/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/241:04 pm -
1 stop24h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/12![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 11/10. 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 12/75:29 pm -
2 stops39h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Multiple Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 11/9. 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.
Tue 12/81:41 pm -
1 stop5h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Delta logo]()
$205
This Cheapflightsfares deal was found by Cheapflights users on 11/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/221:04 pm -
1 stop24h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Frontier logo]()
$209
This Delta deal was found by Cheapflights users on 11/9. 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.
Fri 12/251:25 pm -
1 stop5h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Delta logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1112:51 pm -
2 stops20h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$214
This American Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 12/811:30 am -
2 stops10h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![American Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 11/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:30 am -
2 stops8h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Southwest logo]()
$215
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 November 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Kiwi.com) |
One-way from | $154 (Cheapflightsfares) |
Popular in | October |
Cheapest in | May |
Average price | $451 |
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 7,457,451 searches. Data last updated November 12, 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 Portland - STL Lambert-St Louis
PDXSTL
Portland
Thu 12/3
1:58 pm-10:57 am
1 stop18h 59m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$154
PortlandSt. Louis
PDX Portland - STL Lambert-St Louis
PDXSTL
Portland
Sun 2/28
4:29 pm-10:20 am
1 stop15h 51m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$173
EugeneSt. Louis
EUG Eugene - STL Lambert-St Louis
EUGSTL
Eugene
Tue 12/8
2:35 pm-11:10 pm
1 stop6h 35m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$205
EugeneSt. Louis
EUG Eugene - STL Lambert-St Louis
EUGSTL
Eugene
Tue 12/8
1:41 pm-9:28 pm
1 stop5h 47m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$205
EugeneSt. Louis
EUG Eugene - STL Lambert-St Louis
EUGSTL
Eugene
Tue 12/8
5:00 am-6:16 pm
2 stops11h 16m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
EugeneSt. Louis
EUG Eugene - STL Lambert-St Louis
EUGSTL
Eugene
Tue 12/8
11:30 am-12:02 am
2 stops10h 32m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
PortlandSt. Louis
PDX Portland - STL Lambert-St Louis
PDXSTL
Portland
Wed 12/23
10:15 pm-9:35 am
1 stop9h 20m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
PortlandSt. Louis
PDX Portland - STL Lambert-St Louis
PDXSTL
Portland
Sat 3/27
6:15 am-2:31 pm
1 stop6h 16m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
PortlandSt. Louis
PDX Portland - STL Lambert-St Louis
PDXSTL
Portland
Wed 12/30
11:42 pm-10:05 am
1 stop8h 23m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$210
EugeneSt. Louis
EUG Eugene - STL Lambert-St Louis
EUGSTL
Eugene
Mon 12/14
2:35 pm-11:10 pm
1 stop6h 35m
Lambert-St Louis
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$220
Showing 1-10 of 55 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
EUG-STL
MFR-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
EUG-STL
MFR-STL
RDM-STL
What is the cheapest month to book a flight from Oregon to St. Louis?
Currently, May is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $351). Flying from Oregon to St. Louis in October is currently the most expensive (average of $478). 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.
How much does it cost to fly round-trip from Oregon to St. Louis?
Airfare is below average for this route at the moment.
Oregon to St. Louis flights typically cost between $364 and $549 in December.The cheapest round-trip price found within the last 5 days was $279 on Frontier (Dec 10-Dec 12).
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 71 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.
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 locationsFairview Heights
O'Fallon
Fenton
Eureka
Wentzville
Maryland Heights
Chesterfield
Swansea
Edwardsville
Glencoe
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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 November 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 November 12, 2026.
Oregon to St. Louis flights
Consider these flights traveling from Oregon to St. Louis.
Top 5 airlines flying from Oregon to St. Louis
Discover the top 5 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 7,457,451 searches. Data last updated November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$136 | Average$408 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$177 | Average$426 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$208 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$224 | Average$484 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$295 | Average$480 | FlexibilityNo cancel fee | On-time63% |