$75+ Cheap flights from Ontario (ONT) to Oregon
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Oregon 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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Cheapest flights from Ontario to OregonExplore the most affordable flight options available from Ontario to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
Explore the most affordable flight options available from Ontario to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/267:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Sat 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$157
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sun 5/246:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Tue 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/30![Frontier logo]()
$160
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/266:00 am
ONT
- BOI
1 stop4h 56m
Delta
Tue 6/26:41 pm
BOI
- ONT
1 stop5h 53m
Delta
Deal found 4/27![Delta logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/287:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Wed 6/34:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/213:30 pm
ONT
- MFR
1 stop4h 56m
Multiple Airlines
Mon 6/19:16 pm
MFR
- ONT
1 stop18h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$179
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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.
Wed 5/1310:50 am
ONT
- BOI
1 stop24h 37m
Frontier
Sun 5/171:22 pm
BOI
- ONT
1 stop21h 43m
Frontier
Deal found 4/27![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/266:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Tue 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/27![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:30 pm
ONT
- MFR
1 stop23h 19m
Multiple Airlines
Mon 6/89:13 pm
MFR
- ONT
1 stop22h 38m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$186
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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.
Sun 5/247:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Tue 6/24:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$187
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 6/236:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Tue 6/301:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/30![Frontier logo]()
$190
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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.
Tue 5/266:00 am
ONT
- BOI
1 stop5h 30m
Multiple Airlines
Wed 6/34:14 pm
BOI
- ONT
Nonstop2h 03m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$194
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:00 am
ONT
- PDX
Nonstop2h 24m
Alaska Airlines
Wed 5/278:00 am
PDX
- ONT
Nonstop2h 21m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$197
Best flights from Ontario to OregonDiscover carefully curated flight deals from Ontario to Oregon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
Discover carefully curated flight deals from Ontario to Oregon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Sat 6/64:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/305:55 pm
ONT
- BOI
1 stop4h 09m
Delta
Sat 6/66:00 pm
BOI
- ONT
1 stop5h 32m
Delta
Deal found 4/30![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:05 am
ONT
- PDX
1 stop5h 20m
Southwest
Wed 5/271:10 pm
PDX
- ONT
1 stop3h 55m
Southwest
Deal found 4/29![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 7/41:50 pm
ONT
- BOI
1 stop5h 15m
United Airlines
Tue 7/77:05 pm
BOI
- ONT
1 stop4h 32m
United Airlines
Deal found 4/28![United Airlines logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/2411:51 am
ONT
- MFR
1 stop8h 35m
Multiple Airlines
Sun 5/319:16 pm
MFR
- ONT
2 stops13h 50m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$376
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 am
ONT
- PDX
Nonstop2h 24m
Alaska Airlines
Sun 5/318:00 am
PDX
- ONT
Nonstop2h 21m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:50 pm
ONT
- PDX
1 stop6h 05m
Delta
Mon 6/17:05 am
PDX
- ONT
1 stop5h 28m
Delta
Deal found 4/27![Delta logo]()
$227
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/156:59 pm
ONT
- RDM
1 stop4h 00m
United Airlines
Thu 5/213:51 pm
RDM
- ONT
1 stop6h 46m
United Airlines
Deal found 4/30![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 7/3112:50 pm
ONT
- PDX
1 stop7h 10m
Southwest
Mon 8/35:20 am
PDX
- ONT
1 stop6h 00m
Southwest
Deal found 4/27![Southwest logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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.
Sun 5/247:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Sat 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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.
Sun 5/246:45 am
ONT
- RDM
1 stop5h 50m
Delta
Thu 5/286:10 am
RDM
- ONT
1 stop6h 25m
Delta
Deal found 4/26![Delta logo]()
$259
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 7/174:00 pm
ONT
- PDX
1 stop6h 05m
Southwest
Tue 7/215:10 am
PDX
- ONT
1 stop6h 20m
Southwest
Deal found 4/28![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 8/217:13 pm
ONT
- PDX
1 stop5h 34m
United Airlines
Sun 8/305:10 am
PDX
- ONT
1 stop7h 02m
United Airlines
Deal found 4/26![United Airlines logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Wed 6/34:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:55 pm
ONT
- RDM
1 stop4h 19m
Delta
Sun 5/246:10 am
RDM
- ONT
1 stop6h 25m
Delta
Deal found 4/30![Delta logo]()
$260
This Southwest deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 6/49:45 am
ONT
- BOI
1 stop5h 00m
Southwest
Mon 6/810:25 am
BOI
- ONT
1 stop10h 40m
Southwest
Deal found 4/30![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/286:00 am
ONT
- BOI
1 stop6h 08m
United Airlines
Mon 6/17:05 pm
BOI
- ONT
1 stop4h 32m
United Airlines
Deal found 4/26![United Airlines logo]()
$283
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:57 pm
ONT
- PDX
Nonstop2h 24m
Alaska Airlines
Fri 6/58:00 am
PDX
- ONT
Nonstop2h 21m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:43 am
ONT
- PDX
1 stop4h 14m
United Airlines
Wed 5/205:20 am
PDX
- ONT
1 stop4h 21m
United Airlines
Deal found 4/27![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/181:35 pm
ONT
- PDX
1 stop5h 51m
Delta
Tue 5/265:30 am
PDX
- ONT
1 stop7h 05m
Delta
Deal found 4/30![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/265:20 pm
ONT
- BOI
1 stop5h 00m
Southwest
Tue 6/26:40 am
BOI
- ONT
2 stops5h 55m
Southwest
Deal found 4/27![Southwest logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/293:35 pm
ONT
- PDX
1 stop5h 10m
Alaska Airlines
Sun 5/318:00 am
PDX
- ONT
Nonstop2h 21m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/161:35 pm
ONT
- PDX
1 stop7h 43m
Delta
Tue 5/195:30 am
PDX
- ONT
1 stop7h 05m
Delta
Deal found 4/26![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/44:40 pm
ONT
- PDX
1 stop5h 30m
Southwest
Sat 6/65:25 am
PDX
- ONT
2 stops7h 20m
Southwest
Deal found 4/29![Southwest logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/267:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Sat 5/306:35 am
BOI
- ONT
1 stop5h 35m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$280
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/65:55 pm
ONT
- RDM
1 stop4h 19m
Delta
Tue 6/96:26 am
RDM
- ONT
1 stop4h 51m
Delta
Deal found 4/28![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/146:00 am
ONT
- RDM
1 stop6h 12m
United Airlines
Sun 6/216:00 am
RDM
- ONT
1 stop6h 12m
United Airlines
Deal found 5/1![United Airlines logo]()
$364
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/306:00 am
ONT
- MFR
1 stop6h 49m
Alaska Airlines
Tue 6/27:16 pm
MFR
- ONT
1 stop4h 40m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:45 am
ONT
- MFR
1 stop6h 13m
Delta
Sat 6/66:15 am
MFR
- ONT
1 stop4h 55m
Delta
Deal found 4/30![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 7/610:45 am
ONT
- EUG
1 stop5h 30m
Southwest
Mon 7/134:55 pm
EUG
- ONT
1 stop6h 35m
Southwest
Deal found 4/26![Southwest logo]()
$373
Last-minute flights from Ontario to OregonDiscover last-minute flight deals from Ontario to Oregon. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Oregon. Data last updated May 1, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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.
Wed 5/1310:50 am
ONT
- BOI
1 stop24h 37m
Frontier
Sun 5/171:22 pm
BOI
- ONT
1 stop21h 43m
Frontier
Deal found 4/27![Frontier logo]()
$180
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:00 am
ONT
- PDX
Nonstop2h 24m
Alaska Airlines
Wed 5/278:00 am
PDX
- ONT
Nonstop2h 21m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/213:30 pm
ONT
- MFR
1 stop4h 56m
Multiple Airlines
Mon 6/19:16 pm
MFR
- ONT
1 stop18h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$179
This Frontier deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sun 5/246:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Tue 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/30![Frontier logo]()
$160
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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.
Sun 5/247:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Tue 6/24:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/267:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Sat 5/304:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$157
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/266:00 am
ONT
- BOI
1 stop4h 56m
Delta
Tue 6/26:41 pm
BOI
- ONT
1 stop5h 53m
Delta
Deal found 4/27![Delta logo]()
$167
This Frontier deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/266:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Tue 6/21:25 pm
BOI
- ONT
1 stop11h 24m
Frontier
Deal found 4/27![Frontier logo]()
$185
This Expedia deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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.
Tue 5/266:00 am
ONT
- BOI
1 stop5h 30m
Multiple Airlines
Wed 6/34:14 pm
BOI
- ONT
Nonstop2h 03m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$194
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/266:00 am
ONT
- BOI
1 stop4h 56m
Delta
Wed 6/36:00 pm
BOI
- ONT
1 stop5h 32m
Delta
Deal found 4/28![Delta logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/287:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Wed 6/34:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/283:30 pm
ONT
- MFR
1 stop23h 19m
Multiple Airlines
Mon 6/19:16 pm
MFR
- ONT
1 stop18h 28m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$198
One-way flights from Ontario to OregonSearch for one-way flight options from Ontario to Oregon. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Ontario to Oregon. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Super.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/204:39 pm
ONT
- PDX
1 stop17h 41m
Frontier
Deal found 4/28![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/213:30 pm
ONT
- MFR
1 stop4h 56m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$87
This Super.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/3010:50 am
ONT
- PDX
1 stop5h 56m
Frontier
Deal found 4/30![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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.
Sun 6/76:00 am
ONT
- BOI
1 stop5h 38m
Frontier
Deal found 4/26![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 6/143:34 pm
ONT
- MFR
1 stop23h 15m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$94
This Super.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/1010:50 am
ONT
- PDX
1 stop5h 45m
Frontier
Deal found 4/29![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 6/53:30 pm
ONT
- PDX
1 stop18h 50m
Frontier
Deal found 4/30![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/236:00 am
ONT
- BOI
1 stop5h 30m
Frontier
Deal found 4/29![Frontier logo]()
$95
This Trip.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:05 pm
ONT
- PDX
1 stop6h 36m
Delta
Deal found 4/29![Delta logo]()
$97
This Trip.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:51 am
ONT
- PDX
1 stop22h 29m
Frontier
Deal found 4/29![Frontier logo]()
$99
This Alaska Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$99
This Super.com deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 8/123:40 pm
ONT
- PDX
1 stop26h 24m
Frontier
Deal found 4/30![Frontier logo]()
$100
Find flight deals from Ontario to Oregon
Keep the following information in mind while searching for Ontario to Oregon flight deals. Data was last updated May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (Alaska Airlines) |
One-way from | $75 (Super.com) |
Popular in | November |
Cheapest in | January |
Average price | $217 |
Good round-trip deal | $288 or less |
Good one-way deal | $168 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Oregon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
Use the filters below to find and compare flights from Ontario to Oregon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Wed 6/3
7:48 pm-10:47 pm
Nonstop1h 59m
Boise Air Term. Gowen Fld
Sat 6/6
4:14 pm-5:17 pm
Nonstop2h 03m
$157
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Sat 5/30
5:55 pm-11:04 pm
1 stop4h 09m
Boise Air Term. Gowen Fld
Sat 6/6
6:00 pm-10:32 pm
1 stop5h 32m
$197
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 5/20
11:05 am-4:25 pm
1 stop5h 20m
Portland
Wed 5/27
1:10 pm-5:05 pm
1 stop3h 55m
$207
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 5/27
7:00 am-9:24 am
Nonstop2h 24m
Portland
Sun 5/31
8:00 am-10:21 am
Nonstop2h 21m
$207
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 5/29
5:50 pm-11:55 pm
1 stop6h 05m
Portland
Mon 6/1
7:05 am-12:33 pm
1 stop5h 28m
$227
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Sun 5/24
7:48 pm-10:47 pm
Nonstop1h 59m
Boise Air Term. Gowen Fld
Sat 5/30
4:14 pm-5:17 pm
Nonstop2h 03m
$237
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Tue 6/2
7:48 pm-10:47 pm
Nonstop1h 59m
Boise Air Term. Gowen Fld
Wed 6/3
4:14 pm-5:17 pm
Nonstop2h 03m
$247
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Sat 7/4
1:50 pm-8:05 pm
1 stop5h 15m
Boise Air Term. Gowen Fld
Tue 7/7
7:05 pm-10:37 pm
1 stop4h 32m
$257
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Fri 5/15
6:59 pm-10:59 pm
1 stop4h 00m
Bend/Redmond
Thu 5/21
3:51 pm-10:37 pm
1 stop6h 46m
$259
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 7/31
12:50 pm-8:00 pm
1 stop7h 10m
Portland
Mon 8/3
5:20 am-11:20 am
1 stop6h 00m
$259
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Oregon
Have a flexible travel schedule? Discover the best time to fly to Oregon from Ontario with our price prediction graph.
ONT-BOI
ONT-MFR
ONT-PDX
ONT-RDM
ONT-EUG
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 Ontario to Oregon
ONT-USOR
ONT-BOI
ONT-MFR
ONT-PDX
ONT-RDM
How far ahead should I book a flight from Ontario to Oregon?
The price you pay for your flight from Ontario to Oregon may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Ontario to Oregon?
Currently, October is the cheapest month in which you can book a flight from Ontario to Oregon (average of $39). Flying from Ontario to Oregon in March is currently the most expensive (average of $139). 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 ONT to OR?
Find hourly flight availability from Ontario to Oregon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 47% on flights from Ontario to Oregon by exploring options for tickets at noon.
What is the cheapest day to fly from Ontario to Oregon?
Use this chart to determine the cheapest time to fly round-trip from Ontario to Oregon. Price data was last updated on April 25, 2026.
Travelers seeking maximum savings on their Ontario to Oregon flight should consider departing on Tuesday at noon when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Ontario to Oregon
Explore weekly flight availability from Ontario to Oregon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 1, 2026.
The most flights from ONT to USOR are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).
How much does it cost to fly round-trip from Ontario to Oregon?
Reviews of airlines servicing Oregon
Get insights into the airlines that provide service to Oregon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oregon. Reviews last updated May 1, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andHawaiian Airlines from Ontario to Oregon have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from Ontario to Oregon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to Oregon
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Oregon by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Oregon by cabin class
Find flights from Ontario to Oregon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Oregon flights
Browse other Ontario and Oregon flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Oregon flights
Consider these flights traveling from Ontario to Oregon.
Top 6 airlines flying from Ontario to Oregon
Discover the top 6 airlines that operate flights from Ontario to Oregon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$76 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$78 | Average$313 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$214 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$331 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$363 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$317 | FlexibilityNo cancel fee | On-time63% |