$93+ 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — ONT
Oct 13 — Oct 201
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
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 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 September 13, 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 September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/162:50 pm -
1 stop19h 19m
Wed 11/45:07 pm -
1 stop19h 47m
Deal found 9/11![Frontier logo]()
$203
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:51 pm -
Nonstop2h 11m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 9/10![Alaska Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/304:54 pm -
Nonstop2h 11m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 9/10![Alaska Airlines logo]()
$217
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:50 pm -
1 stop19h 19m
Wed 9/162:30 pm -
1 stop22h 25m
Deal found 9/10![Frontier logo]()
$219
This Southwest deal was found by Cheapflights users on 9/10. 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 10/271:25 pm -
2 stops9h 00m
Tue 11/37:05 am -
1 stop5h 00m
Deal found 9/10![Southwest logo]()
$222
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/172:02 pm -
1 stop5h 41m
Sun 11/14:25 pm -
1 stop6h 34m
Deal found 9/10![American Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 9/11. 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 10/1612:45 pm -
1 stop6h 35m
Wed 11/43:20 pm -
2 stops6h 30m
Deal found 9/11![Southwest logo]()
$232
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Fri 9/112:50 pm -
1 stop26h 44m
Sun 9/138:00 am -
1 stop4h 55m
Deal found 9/10![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop17h 14m
Mon 10/58:00 am -
1 stop4h 55m
Deal found 9/9![Frontier logo]()
$235
This Southwest deal was found by Cheapflights users on 9/10. 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.
Thu 10/226:50 am -
1 stop5h 25m
Mon 10/264:25 pm -
1 stop6h 45m
Deal found 9/10![Southwest logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/162:50 pm -
1 stop19h 19m
Sun 10/186:02 am -
1 stop5h 33m
Deal found 9/9![Multiple Airlines logo]()
$238
This Southwest deal was found by Cheapflights users on 9/8. 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 10/63:20 pm -
1 stop7h 25m
Tue 10/133:10 pm -
2 stops7h 05m
Deal found 9/8![Southwest logo]()
$240
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 September 13, 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 September 13, 2026.
This Southwest deal was found by Cheapflights users on 9/10. 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 10/271:25 pm -
2 stops9h 00m
Tue 11/37:05 am -
1 stop5h 00m
Deal found 9/10![Southwest logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 10/306:43 am -
1 stop7h 33m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 9/8![Alaska Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 9/10. 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 12/24:24 pm -
1 stop5h 05m
Wed 12/166:00 am -
1 stop4h 09m
Deal found 9/10![United Airlines logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Mon 9/2812:20 pm -
1 stop20h 49m
Thu 10/12:30 pm -
1 stop21h 10m
Deal found 9/8![Multiple Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 9/9. 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 10/238:44 pm -
1 stop25h 59m
Fri 10/306:20 am -
1 stop15h 36m
Deal found 9/9![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 9/8. 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 10/63:20 pm -
1 stop7h 25m
Tue 10/133:10 pm -
2 stops7h 05m
Deal found 9/8![Southwest logo]()
$240
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:46 pm -
1 stop16h 32m
Wed 11/186:00 am -
1 stop8h 36m
Deal found 9/10![Alaska Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 9/10. 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 11/106:04 am -
1 stop5h 13m
Sat 11/146:00 am -
2 stops10h 46m
Deal found 9/10![Delta logo]()
$268
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/91:35 pm -
1 stop20h 42m
Fri 10/162:13 pm -
1 stop9h 37m
Deal found 9/10![Alaska Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 9/10. 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 10/286:10 am -
1 stop5h 06m
Tue 12/157:00 am -
1 stop5h 43m
Deal found 9/10![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 9/10. 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 9/296:55 am -
1 stop6h 45m
Thu 10/16:15 pm -
1 stop5h 10m
Deal found 9/10![Southwest logo]()
$293
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/94:15 pm -
Nonstop2h 07m
Sat 1/163:05 pm -
Nonstop1h 59m
Deal found 9/10![Alaska Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/185:30 am -
1 stop6h 42m
Mon 9/211:56 pm -
1 stop4h 23m
Deal found 9/10![United Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:16 am -
1 stop8h 03m
Thu 11/1911:57 am -
1 stop6h 58m
Deal found 9/13![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:20 pm -
1 stop7h 30m
Sun 11/16:50 pm -
1 stop6h 30m
Deal found 9/12![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/9. 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 9/235:40 am -
1 stop6h 34m
Sat 9/266:00 pm -
1 stop4h 31m
Deal found 9/9![Delta logo]()
$297
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:08 pm -
Nonstop2h 16m
Sun 11/154:04 pm -
Nonstop2h 00m
Deal found 9/12![Alaska Airlines logo]()
$302
This Southwest deal was found by Cheapflights users on 9/10. 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 9/293:40 pm -
1 stop6h 20m
Sun 10/46:20 am -
1 stop6h 30m
Deal found 9/10![Southwest logo]()
$305
This Delta deal was found by Cheapflights users on 9/10. 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 10/224:41 pm -
1 stop7h 14m
Tue 10/276:00 am -
2 stops11h 01m
Deal found 9/10![Delta logo]()
$306
This Alaska Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:18 pm -
1 stop8h 24m
Mon 10/196:45 pm -
Nonstop2h 01m
Deal found 9/12![Alaska Airlines logo]()
$312
This United Airlines deal was found by Cheapflights users on 9/11. 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 12/51:40 pm -
1 stop3h 56m
Wed 12/96:00 am -
1 stop6h 27m
Deal found 9/11![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/149:58 am -
1 stop6h 26m
Mon 11/1611:57 am -
1 stop6h 58m
Deal found 9/12![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 9/8. 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.
Thu 10/84:05 pm -
2 stops7h 45m
Mon 10/126:15 pm -
1 stop5h 20m
Deal found 9/8![Southwest logo]()
$344
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:35 pm -
1 stop6h 40m
Sun 11/16:00 am -
1 stop6h 54m
Deal found 9/12![United Airlines logo]()
$419
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/26:17 pm -
1 stop18h 59m
Sun 10/46:02 am -
1 stop6h 36m
Deal found 9/9![Alaska Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 9/10. 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.
Fri 11/136:20 am -
1 stop4h 57m
Mon 11/1611:57 am -
1 stop6h 50m
Deal found 9/10![Delta logo]()
$309
This Alaska Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:39 pm -
1 stop4h 38m
Wed 11/1810:40 am -
1 stop5h 01m
Deal found 9/10![Alaska Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 9/10. 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.
Thu 10/224:05 pm -
2 stops7h 45m
Tue 10/275:50 am -
2 stops7h 05m
Deal found 9/10![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Sun 9/2712:30 pm -
1 stop8h 28m
Sat 10/35:00 am -
1 stop8h 25m
Deal found 9/9![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 9/9. 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 10/205:30 am -
2 stops7h 06m
Sun 10/256:00 pm -
1 stop5h 59m
Deal found 9/9![Delta logo]()
$311
Last-minute flights from Oregon to OntarioDiscover last-minute flight deals from Oregon to Ontario. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to Ontario. Data last updated September 13, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Fri 9/112:50 pm -
1 stop26h 44m
Sun 9/138:00 am -
1 stop4h 55m
Deal found 9/10![Frontier logo]()
$234
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:50 pm -
1 stop19h 19m
Wed 9/162:30 pm -
1 stop22h 25m
Deal found 9/10![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop17h 14m
Mon 10/58:00 am -
1 stop4h 55m
Deal found 9/9![Frontier logo]()
$235
This Southwest deal was found by Cheapflights users on 9/8. 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 10/63:20 pm -
1 stop7h 25m
Tue 10/133:10 pm -
2 stops7h 05m
Deal found 9/8![Southwest logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Fri 10/162:50 pm -
1 stop19h 19m
Wed 11/45:07 pm -
1 stop19h 47m
Deal found 9/11![Frontier logo]()
$203
This Southwest deal was found by Cheapflights users on 9/11. 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 10/1612:45 pm -
1 stop6h 35m
Wed 11/43:20 pm -
2 stops6h 30m
Deal found 9/11![Southwest logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/162:50 pm -
1 stop19h 19m
Sun 10/186:02 am -
1 stop5h 33m
Deal found 9/9![Multiple Airlines logo]()
$238
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/172:02 pm -
1 stop5h 41m
Sun 11/14:25 pm -
1 stop6h 34m
Deal found 9/10![American Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 9/10. 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.
Thu 10/226:50 am -
1 stop5h 25m
Mon 10/264:25 pm -
1 stop6h 45m
Deal found 9/10![Southwest logo]()
$237
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:51 pm -
Nonstop2h 11m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 9/10![Alaska Airlines logo]()
$207
This Southwest deal was found by Cheapflights users on 9/10. 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 10/271:25 pm -
2 stops9h 00m
Tue 11/37:05 am -
1 stop5h 00m
Deal found 9/10![Southwest logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/304:54 pm -
Nonstop2h 11m
Tue 11/34:06 pm -
Nonstop2h 00m
Deal found 9/10![Alaska Airlines logo]()
$217
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 September 13, 2026.
Search for one-way flight options from Oregon to Ontario. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
This WAYA deal was found by Cheapflights users on 9/10. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:50 pm -
1 stop4h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$93
This Super.com deal was found by Cheapflights users on 9/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/152:49 pm -
1 stop21h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$103
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:50 pm -
1 stop17h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$107
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:06 am -
1 stop7h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![American Airlines logo]()
$109
This CheapOair deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:50 pm -
1 stop20h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$111
This WAYA deal was found by Cheapflights users on 9/11. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:53 pm -
1 stop4h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$112
This Super.com deal was found by Cheapflights users on 9/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:39 pm -
1 stop4h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 9/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:11 pm -
1 stop4h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$114
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/84:35 pm -
1 stop7h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 9/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:50 pm -
1 stop21h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 9/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:50 pm -
1 stop19h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$116
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:02 pm -
1 stop22h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$117
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 September 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $203 (Kiwi.com) |
One-way from | $93 (WAYA) |
Popular in | June |
Cheapest in | January |
Average price | $240 |
Good round-trip deal | $302 or less |
Good one-way deal | $193 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 September 13, 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
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sat 10/3
5:20 pm-10:04 pm
1 stop5h 44m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$127
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Tue 10/6
12:20 pm-4:20 pm
1 stop5h 00m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$127
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Wed 10/21
5:59 am-10:49 am
1 stop5h 50m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Wed 10/21
5:30 pm-9:20 pm
1 stop3h 50m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$134
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Tue 11/3
10:49 am-3:13 pm
1 stop5h 24m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$134
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Sun 10/25
2:50 pm-7:04 am
1 stop17h 14m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$141
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Sat 10/10
9:55 am-4:23 pm
1 stop6h 28m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$144
Quickest round-trip
BoiseOntario
BOI Boise Air Term. Gowen Fld - ONT Ontario
BOIONT
Boise Air Term. Gowen Fld
Fri 11/13
2:08 pm-3:24 pm
Nonstop2h 16m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$144
PortlandOntario
PDX Portland - ONT Ontario
PDXONT
Portland
Thu 11/12
5:24 pm-11:49 pm
1 stop6h 25m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$145
RedmondOntario
RDM Bend/Redmond - ONT Ontario
RDMONT
Bend/Redmond
Sun 10/25
6:10 am-11:16 am
1 stop5h 06m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$145
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.
BOI-ONT
RDM-ONT
PDX-ONT
MFR-ONT
EUG-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
BOI-ONT
RDM-ONT
PDX-ONT
MFR-ONT
What is the cheapest month to book a flight from Oregon to Ontario?
Currently, October is the cheapest month in which you can book a flight from Oregon to Ontario (average of $245). 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 September 13, 2026.
It’s typically best to fly out from Oregon to Ontario in the evening. Doing so could potentially save you 24% 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 September 13, 2026.
The most flights from USOR to ONT are scheduled on a Thursday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Oregon to Ontario?
Airfare is below average for this route at the moment.
Oregon to Ontario flights typically cost between $267 and $409 in October.The cheapest round-trip price found within the last 5 days was $241 on Frontier (Oct 27-Oct 31).
How far ahead should I book a flight from Oregon to Ontario?
The best time to book flights from Oregon to Ontario is 46 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 September 5, 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Popular flights
Top destinations
Alternative routes for Oregon to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
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 September 13, 2026.
Oregon and Ontario flights
Browse other Oregon and Ontario flight options. Last updated on September 13, 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 6 airlines flying from Oregon to Ontario
Discover the top 6 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 September 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$51 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$372 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$138 | Average$256 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$142 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$376 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$167 | Average$337 | FlexibilityNo cancel fee | On-time63% |