$81+ Cheap flights from Oregon to Ontario (ONT)
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 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ONT
Nov 23 — Nov 301
Round-trip
1 adult, Economy
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Find cheap flights from Oregon to Ontario 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 Ontario
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Cheapest flights from Oregon to OntarioExplore the most affordable flight options available from Oregon to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
Explore the most affordable flight options available from Oregon to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 24, 2026.
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/95:43 pm -
1 stop5h 17m
Sat 11/145:56 pm -
1 stop5h 02m
Deal found 10/22![Delta logo]()
$205
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/910:55 am -
2 stops6h 55m
Sat 11/141:10 pm -
1 stop6h 35m
Deal found 10/22![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/45:45 am -
1 stop8h 55m
Sat 12/51:10 pm -
1 stop6h 30m
Deal found 10/20![Southwest logo]()
$231
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/1212:35 pm -
1 stop5h 35m
Mon 11/161:30 pm -
1 stop7h 50m
Deal found 10/21![Southwest logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/810:58 am -
1 stop24h 18m
Thu 11/128:35 pm -
1 stop18h 46m
Deal found 10/24![Multiple Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/196:08 am -
1 stop5h 09m
Sun 11/227:00 am -
1 stop6h 00m
Deal found 10/20![Delta logo]()
$244
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/511:15 am -
2 stops7h 00m
Sun 12/62:45 pm -
1 stop8h 00m
Deal found 10/20![Southwest logo]()
$249
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:27 am -
2 stops9h 09m
Thu 12/36:00 am -
1 stop6h 53m
Deal found 10/21![Frontier logo]()
$253
This CheapOair deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/201:58 pm -
1 stop17h 22m
Sun 11/222:01 pm -
1 stop22h 35m
Deal found 10/23![Frontier logo]()
$254
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/55:43 pm -
1 stop5h 16m
Mon 12/711:57 am -
1 stop5h 06m
Deal found 10/19![Delta logo]()
$254
This Alaska Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/129:33 pm -
Nonstop2h 21m
Fri 1/83:05 pm -
1 stop5h 44m
Deal found 10/21![Alaska Airlines logo]()
$255
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:31 pm -
1 stop22h 45m
Mon 11/162:23 pm -
2 stops20h 44m
Deal found 10/21![Frontier logo]()
$256
Best flights from Oregon to OntarioDiscover carefully curated flight deals from Oregon to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
Discover carefully curated flight deals from Oregon to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 24, 2026.
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 1/127:05 am -
2 stops7h 15m
Tue 1/195:40 pm -
1 stop3h 35m
Deal found 10/20![Southwest logo]()
$211
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 1/216:00 am -
1 stop6h 30m
Sun 1/245:05 pm -
1 stop6h 46m
Deal found 10/19![Delta logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/125:05 am -
1 stop6h 13m
Sun 11/156:00 am -
1 stop5h 22m
Deal found 10/22![Alaska Airlines logo]()
$264
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/109:00 am -
1 stop6h 33m
Sat 11/141:35 pm -
1 stop4h 49m
Deal found 10/23![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/1210:55 am -
2 stops6h 55m
Mon 11/161:30 pm -
1 stop7h 50m
Deal found 10/22![Southwest logo]()
$240
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/148:08 am -
1 stop7h 05m
Mon 11/164:04 pm -
1 stop4h 23m
Deal found 10/22![Alaska Airlines logo]()
$264
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/45:41 pm -
1 stop5h 02m
Mon 11/95:04 pm -
1 stop6h 55m
Deal found 10/19![Delta logo]()
$281
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/35:41 pm -
1 stop5h 02m
Mon 11/95:04 pm -
1 stop6h 55m
Deal found 10/19![Delta logo]()
$281
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/195:30 am -
1 stop6h 59m
Sat 11/214:17 pm -
1 stop4h 45m
Deal found 10/21![United Airlines logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 1/2210:59 am -
1 stop6h 23m
Tue 1/265:57 pm -
Nonstop2h 26m
Deal found 10/22![Alaska Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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.
Sun 12/62:25 pm -
1 stop8h 35m
Fri 12/114:00 pm -
2 stops7h 40m
Deal found 10/19![Southwest logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 12/39:33 pm -
Nonstop2h 21m
Sun 12/66:00 am -
1 stop7h 28m
Deal found 10/19![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/91:51 pm -
1 stop3h 45m
Wed 1/67:25 am -
1 stop4h 28m
Deal found 10/24![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/164:41 pm -
1 stop7h 16m
Tue 12/295:38 pm -
1 stop6h 21m
Deal found 10/24![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 12/59:15 am -
2 stops7h 05m
Mon 12/74:55 pm -
1 stop4h 35m
Deal found 10/23![Southwest logo]()
$312
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/194:30 pm -
1 stop6h 18m
Sun 11/226:37 pm -
1 stop4h 15m
Deal found 10/20![United Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 3/2412:30 pm -
1 stop4h 47m
Tue 4/135:05 pm -
1 stop6h 35m
Deal found 10/24![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/95:15 am -
1 stop5h 25m
Fri 11/136:25 pm -
1 stop5h 15m
Deal found 10/23![Southwest logo]()
$332
This Alaska Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/107:30 am -
Nonstop2h 22m
Sat 11/1410:40 am -
Nonstop2h 25m
Deal found 10/23![Alaska Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/62:05 pm -
1 stop6h 10m
Tue 11/101:29 pm -
1 stop7h 49m
Deal found 10/22![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/56:21 am -
2 stops10h 07m
Sat 12/125:12 pm -
1 stop4h 57m
Deal found 10/20![Delta logo]()
$334
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/41:05 pm -
1 stop4h 35m
Sat 11/74:00 pm -
1 stop3h 50m
Deal found 10/23![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/72:20 pm -
1 stop6h 18m
Thu 12/106:00 am -
1 stop5h 59m
Deal found 10/19![United Airlines logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/31:39 pm -
1 stop4h 42m
Sat 11/712:02 pm -
1 stop4h 59m
Deal found 10/20![Alaska Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/111:23 pm -
2 stops10h 34m
Sun 12/131:11 pm -
2 stops9h 50m
Deal found 10/21![Delta logo]()
$339
This Alaska Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 3/245:59 pm -
1 stop4h 40m
Fri 4/96:10 pm -
1 stop4h 32m
Deal found 10/24![Alaska Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/35:41 pm -
1 stop5h 02m
Sun 11/86:20 am -
1 stop6h 36m
Deal found 10/19![Delta logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/1410:11 am -
1 stop5h 02m
Wed 11/184:09 pm -
1 stop7h 40m
Deal found 10/20![Alaska Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 1/142:05 pm -
1 stop6h 20m
Thu 1/213:59 pm -
1 stop4h 10m
Deal found 10/24![United Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/131:20 pm -
2 stops10h 29m
Sun 11/156:00 am -
1 stop5h 39m
Deal found 10/23![Delta logo]()
$354
Last-minute flights from Oregon to OntarioDiscover last-minute flight deals from Oregon to Ontario. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to Ontario. Data last updated October 24, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/75:55 am -
1 stop5h 25m
Thu 11/125:30 pm -
1 stop6h 00m
Deal found 10/19![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/810:58 am -
1 stop24h 18m
Thu 11/128:35 pm -
1 stop18h 46m
Deal found 10/24![Multiple Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/95:43 pm -
1 stop5h 17m
Sat 11/145:56 pm -
1 stop5h 02m
Deal found 10/22![Delta logo]()
$205
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/910:55 am -
2 stops6h 55m
Sat 11/141:10 pm -
1 stop6h 35m
Deal found 10/22![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/1212:35 pm -
1 stop5h 35m
Mon 11/161:30 pm -
1 stop7h 50m
Deal found 10/21![Southwest logo]()
$235
This Alaska Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/126:08 am -
1 stop5h 10m
Mon 11/165:59 pm -
Nonstop2h 25m
Deal found 10/22![Alaska Airlines logo]()
$255
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:31 pm -
1 stop22h 45m
Mon 11/162:23 pm -
2 stops20h 44m
Deal found 10/21![Frontier logo]()
$256
This CheapOair deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1612:31 pm -
1 stop21h 09m
Thu 11/198:35 pm -
1 stop16h 28m
Deal found 10/23![Frontier logo]()
$259
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 11/196:08 am -
1 stop5h 09m
Sun 11/227:00 am -
1 stop6h 00m
Deal found 10/20![Delta logo]()
$244
This CheapOair deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/201:58 pm -
1 stop17h 22m
Sun 11/222:01 pm -
1 stop22h 35m
Deal found 10/23![Frontier logo]()
$254
This Frontier deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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.
Tue 11/2412:52 pm -
Nonstop2h 26m
Thu 11/268:15 am -
1 stop9h 19m
Deal found 10/20![Frontier logo]()
$258
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:27 am -
2 stops9h 09m
Thu 12/36:00 am -
1 stop6h 53m
Deal found 10/21![Frontier logo]()
$253
One-way flights from Oregon to OntarioSearch for one-way flight options from Oregon to Ontario. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
Search for one-way flight options from Oregon to Ontario. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:27 am -
1 stop13h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$81
This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 12/510:56 am -
1 stop12h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$92
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:02 pm -
1 stop22h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$93
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” 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 11/201:58 pm -
1 stop5h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$94
This Booking.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/1012:02 pm -
1 stop11h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:31 pm -
1 stop22h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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.
Tue 12/2910:28 pm -
1 stop8h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$100
This Trip.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:31 pm -
1 stop6h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$101
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” 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 12/75:43 pm -
1 stop5h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Delta logo]()
$103
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2510:27 am -
1 stop13h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$104
This Southwest deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” 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 11/1210:55 am -
2 stops7h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Southwest logo]()
$108
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” 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 11/1212:35 pm -
1 stop4h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Delta logo]()
$129
Find flight deals from Oregon to Ontario
Keep the following information in mind while searching for Oregon to Ontario flight deals. Data was last updated October 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $205 (Delta) |
One-way from | $81 (Super.com) |
Popular in | June |
Cheapest in | January |
Average price | $266 |
Good round-trip deal | $367 or less |
Good one-way deal | $213 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Oregon to Ontario 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 October 24, 2026.
Use the filters below to find and compare flights from Oregon to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
EugeneOntario
EUG Eugene - ONT Ontario
EUGONT
Eugene
Thu 11/12
12:35 pm-6:10 pm
1 stop5h 35m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$103
EugeneOntario
EUG Eugene - ONT Ontario
EUGONT
Eugene
Mon 12/7
6:45 am-10:30 am
1 stop3h 45m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$103
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Mon 1/4
5:45 pm-10:43 pm
1 stop4h 58m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Wed 12/16
5:30 am-9:38 am
1 stop4h 08m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Thu 12/31
5:05 am-11:19 am
1 stop6h 14m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Fri 12/25
5:05 am-11:19 am
1 stop6h 14m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$137
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Fri 11/6
5:30 am-10:40 am
1 stop5h 10m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Tue 11/3
10:15 am-5:40 pm
2 stops7h 25m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$154
Quickest round-trip
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Sat 12/5
9:33 pm-11:54 pm
Nonstop2h 21m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$159
EugeneOntario
EUG Eugene - ONT Ontario
EUGONT
Eugene
Fri 12/11
4:41 pm-11:57 pm
1 stop7h 16m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$161
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Oregon to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Oregon with our price prediction graph.
PDX-ONT
EUG-ONT
MFR-ONT
RDM-ONT
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 Ontario
USOR-ONT
PDX-ONT
EUG-ONT
MFR-ONT
RDM-ONT
What is the cheapest month to book a flight from Oregon to Ontario?
Currently, January is the cheapest month in which you can book a flight from Oregon to Ontario (average of $256). Flying from Oregon to Ontario in May is currently the most expensive (average of $368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from OR to ONT?
Find hourly flight availability from Oregon to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 24, 2026.
It’s typically best to fly out from Oregon to Ontario in the evening. Doing so could potentially save you 7% on the flight price compared to flying in the morning, which is usually more expensive.
Weekly flight availability from Oregon to Ontario
Explore weekly flight availability from Oregon to Ontario. 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 October 24, 2026.
The most flights from USOR to ONT are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, 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 Ontario?
Airfare is typical for this route at the moment.
Oregon to Ontario flights typically cost between $242 and $416 in November.The cheapest round-trip price found within the last 5 days was $253 on Frontier (Nov 25-Dec 3).
How far ahead should I book a flight from Oregon to Ontario?
The best time to book flights from Oregon to Ontario is 65 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 day to fly from Oregon to Ontario?
Use this chart to determine the cheapest time to fly round-trip from Oregon to Ontario. Price data was last updated on October 17, 2026.
Travelers seeking maximum savings on their Oregon to Ontario flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Oregon to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Oregon to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Oregon to Ontario by cabin class
Find flights from Oregon to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Oregon and Ontario flights
Browse other Oregon and Ontario flight options. Last updated on October 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Oregon to Ontario flights
Consider these flights traveling from Oregon to Ontario.
Top 5 airlines flying from Oregon to Ontario
Discover the top 5 airlines that operate flights from Oregon to Ontario. 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 October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$83 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$102 | Average$221 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$142 | Average$323 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$399 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$174 | Average$355 | FlexibilityNo cancel fee | On-time63% |