$76+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Oregon with Cheapflights
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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 March 15, 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 March 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$147
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:55 pm
ONT
- BOI
1 stop5h 22m
Delta
Wed 5/138:45 am
BOI
- ONT
1 stop4h 34m
Delta
Deal found 3/11![Delta logo]()
$151
This Southwest deal was found by Cheapflights users on 3/11. 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.
Wed 5/63:45 pm
ONT
- BOI
2 stops7h 40m
Southwest
Wed 5/135:15 pm
BOI
- ONT
1 stop5h 55m
Southwest
Deal found 3/11![Southwest logo]()
$156
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Wed 4/85:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/222:10 pm
ONT
- BOI
1 stop3h 50m
Southwest
Sat 4/253:25 pm
BOI
- ONT
1 stop4h 55m
Southwest
Deal found 3/14![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/11. 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.
Wed 4/85:20 pm
ONT
- BOI
1 stop5h 00m
Southwest
Wed 4/156:00 am
BOI
- ONT
2 stops6h 55m
Southwest
Deal found 3/11![Southwest logo]()
$162
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Sat 4/115:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/12:59 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Sat 5/164:14 pm
BOI
- ONT
Nonstop2h 03m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$167
This Southwest deal was found by Cheapflights users on 3/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:20 pm
ONT
- PDX
1 stop5h 05m
Southwest
Tue 5/511:00 am
PDX
- ONT
1 stop3h 55m
Southwest
Deal found 3/13![Southwest logo]()
$172
This Southwest deal was found by Cheapflights users on 3/11. 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.
Sat 5/93:35 pm
ONT
- PDX
1 stop6h 25m
Southwest
Mon 5/116:00 am
PDX
- ONT
1 stop6h 10m
Southwest
Deal found 3/11![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 3/11. 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 4/245:05 pm
ONT
- BOI
1 stop6h 40m
Southwest
Tue 4/282:00 pm
BOI
- ONT
1 stop6h 35m
Southwest
Deal found 3/11![Southwest logo]()
$174
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 March 15, 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 March 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$147
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/31:43 pm
ONT
- PDX
1 stop7h 31m
United Airlines
Sun 4/55:30 am
PDX
- ONT
1 stop4h 26m
United Airlines
Deal found 3/10![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 3/11. 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 4/105:30 pm
ONT
- BOI
1 stop4h 25m
Southwest
Thu 4/161:20 pm
BOI
- ONT
1 stop9h 15m
Southwest
Deal found 3/11![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:55 pm
ONT
- MFR
1 stop16h 39m
Delta
Sun 5/35:28 pm
MFR
- ONT
2 stops30h 16m
Delta
Deal found 3/11![Delta logo]()
$212
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/116:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Mon 4/1311:58 am
BOI
- ONT
1 stop22h 41m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$191
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/106:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Mon 4/134:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:00 am
ONT
- PDX
Nonstop2h 24m
Alaska Airlines
Tue 5/57:30 am
PDX
- ONT
1 stop4h 38m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$202
This Delta deal was found by Cheapflights users on 3/12. 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 5/165:55 pm
ONT
- PDX
1 stop4h 45m
Delta
Tue 5/195:30 am
PDX
- ONT
2 stops6h 49m
Delta
Deal found 3/12![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 4/186:00 am
ONT
- PDX
1 stop6h 25m
United Airlines
Sat 4/185:35 pm
PDX
- ONT
1 stop5h 10m
United Airlines
Deal found 3/10![United Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 3/12. 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.
Thu 4/234:25 pm
ONT
- PDX
1 stop5h 45m
Southwest
Mon 4/276:10 am
PDX
- ONT
2 stops8h 50m
Southwest
Deal found 3/12![Southwest logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Sun 4/57:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Wed 4/85:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$207
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/1511:05 am
ONT
- BOI
1 stop4h 43m
United Airlines
Sat 4/1812:30 pm
BOI
- ONT
1 stop6h 17m
United Airlines
Deal found 3/14![United Airlines logo]()
$257
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/16:25 pm
ONT
- PDX
1 stop11h 54m
Alaska Airlines
Sat 4/115:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$220
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 5/124:57 pm
ONT
- EUG
2 stops6h 53m
Delta
Thu 5/145:10 am
EUG
- ONT
1 stop7h 09m
Delta
Deal found 3/12![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:50 pm
ONT
- EUG
1 stop9h 55m
Southwest
Mon 5/42:50 pm
EUG
- ONT
2 stops8h 15m
Southwest
Deal found 3/11![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Sun 4/126:00 am
ONT
- MFR
1 stop5h 49m
United Airlines
Mon 4/276:00 am
MFR
- ONT
1 stop6h 20m
United Airlines
Deal found 3/12![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 3/10. 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.
Sun 4/56:00 am
ONT
- EUG
1 stop17h 50m
Delta
Mon 4/136:30 am
EUG
- ONT
1 stop4h 43m
Delta
Deal found 3/10![Delta logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/107:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Mon 4/135:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 5/610:39 am
ONT
- RDM
1 stop26h 19m
Alaska Airlines
Sat 5/99:28 am
RDM
- ONT
1 stop24h 17m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 3/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:25 am
ONT
- EUG
2 stops7h 00m
Southwest
Sat 4/255:00 am
EUG
- ONT
2 stops9h 10m
Southwest
Deal found 3/13![Southwest logo]()
$382
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 5/53:26 pm
ONT
- MFR
1 stop25h 33m
Alaska Airlines
Sat 5/95:36 pm
MFR
- ONT
1 stop16h 09m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 3/10. 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.
Sun 4/56:00 am
ONT
- EUG
1 stop5h 00m
Delta
Sat 4/115:50 pm
EUG
- ONT
1 stop4h 44m
Delta
Deal found 3/10![Delta logo]()
$361
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 6/67:48 pm
ONT
- BOI
Nonstop1h 59m
Alaska Airlines
Thu 6/112:17 pm
BOI
- ONT
Nonstop2h 07m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/236:00 am
ONT
- OTH
1 stop7h 10m
United Airlines
Sat 4/251:51 pm
OTH
- ONT
1 stop3h 56m
United Airlines
Deal found 3/12![United Airlines logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 8/276:58 pm
ONT
- RDM
1 stop5h 24m
Alaska Airlines
Mon 8/316:00 am
RDM
- ONT
1 stop5h 09m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Thu 5/285:00 am
ONT
- OTH
1 stop8h 23m
United Airlines
Mon 6/12:04 pm
OTH
- ONT
1 stop22h 08m
United Airlines
Deal found 3/11![United Airlines logo]()
$452
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 5/12:59 pm
ONT
- PDX
1 stop22h 48m
Alaska Airlines
Sun 5/39:30 pm
PDX
- ONT
Nonstop2h 18m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/36:00 am
ONT
- OTH
1 stop7h 10m
United Airlines
Wed 4/81:51 pm
OTH
- ONT
1 stop3h 56m
United Airlines
Deal found 3/10![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Thu 4/162:22 pm
BOI
- ONT
1 stop10h 37m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$260
This Alaska Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 5/1210:39 am
ONT
- EUG
1 stop13h 20m
Alaska Airlines
Thu 5/144:08 pm
EUG
- ONT
1 stop7h 50m
Alaska Airlines
Deal found 3/12![Alaska Airlines logo]()
$274
Last-minute flights from Ontario to OregonDiscover last-minute flight deals from Ontario to Oregon. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Oregon. Data last updated March 15, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Tue 4/144:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Wed 4/85:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Sat 4/115:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:00 am
ONT
- PDX
Nonstop2h 28m
Alaska Airlines
Mon 4/135:58 pm
PDX
- ONT
Nonstop2h 25m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 3/11. 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.
Wed 4/85:20 pm
ONT
- BOI
1 stop5h 00m
Southwest
Wed 4/156:00 am
BOI
- ONT
2 stops6h 55m
Southwest
Deal found 3/11![Southwest logo]()
$162
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Wed 4/221:15 pm
BOI
- ONT
Nonstop2h 04m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/156:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Sat 4/184:40 pm
BOI
- ONT
Nonstop2h 05m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$147
This Delta deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:55 pm
ONT
- PDX
1 stop6h 01m
Delta
Sat 4/255:30 am
PDX
- ONT
1 stop5h 43m
Delta
Deal found 3/11![Delta logo]()
$174
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/222:10 pm
ONT
- BOI
1 stop3h 50m
Southwest
Sat 4/253:25 pm
BOI
- ONT
1 stop4h 55m
Southwest
Deal found 3/14![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/11. 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 4/245:05 pm
ONT
- BOI
1 stop6h 40m
Southwest
Tue 4/282:00 pm
BOI
- ONT
1 stop6h 35m
Southwest
Deal found 3/11![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 3/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:20 pm
ONT
- PDX
1 stop5h 05m
Southwest
Tue 5/511:00 am
PDX
- ONT
1 stop3h 55m
Southwest
Deal found 3/13![Southwest logo]()
$172
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 March 15, 2026.
Search for one-way flight options from Ontario to Oregon. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Southwest deal was found by Cheapflights users on 3/12. 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.
Wed 4/229:05 am
ONT
- PDX
1 stop4h 35m
Southwest
Deal found 3/12![Southwest logo]()
$76
This Southwest deal was found by Cheapflights users on 3/10. 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.
Wed 5/66:55 am
ONT
- BOI
1 stop7h 30m
Southwest
Deal found 3/10![Southwest logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1512:59 am
ONT
- PDX
1 stop10h 43m
Frontier
Deal found 3/10![Frontier logo]()
$78
This Southwest deal was found by Cheapflights users on 3/10. 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 4/75:20 pm
ONT
- BOI
1 stop5h 00m
Southwest
Deal found 3/10![Southwest logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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.
Tue 4/1412:59 am
ONT
- PDX
1 stop10h 39m
Frontier
Deal found 3/14![Frontier logo]()
$83
This Booking.com deal was found by Cheapflights users on 3/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:59 am
ONT
- PDX
1 stop10h 53m
Frontier
Deal found 3/10![Frontier logo]()
$86
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:22 pm
ONT
- PDX
1 stop4h 23m
Alaska Airlines
Deal found 3/13![Alaska Airlines logo]()
$89
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/116:25 pm
ONT
- BOI
Nonstop2h 01m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$89
This Frontier deal was found by Cheapflights users on 3/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:08 pm
ONT
- PDX
1 stop5h 01m
Frontier
Deal found 3/10![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 3/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
ONT
- BOI
1 stop5h 27m
Frontier
Deal found 3/12![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:33 pm
ONT
- PDX
1 stop19h 29m
Frontier
Deal found 3/10![Frontier logo]()
$91
This Southwest deal was found by Cheapflights users on 3/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:30 am
ONT
- PDX
2 stops6h 15m
Southwest
Deal found 3/13![Southwest logo]()
$94
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (Expedia) |
One-way from | $76 (Southwest) |
Popular in | November |
Cheapest in | January |
Average price | $243 |
Good round-trip deal | $197 or less |
Good one-way deal | $219 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 March 15, 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 4/15
6:25 pm-9:26 pm
Nonstop2h 01m
Boise Air Term. Gowen Fld
Sat 4/18
4:40 pm-5:45 pm
Nonstop2h 05m
$147
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Sat 4/11
6:25 pm-9:26 pm
Nonstop2h 01m
Boise Air Term. Gowen Fld
Mon 4/13
11:58 am-9:39 am
1 stop22h 41m
$191
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 4/3
1:43 pm-9:14 pm
1 stop7h 31m
Portland
Sun 4/5
5:30 am-9:56 am
1 stop4h 26m
$197
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Fri 4/10
6:25 pm-9:26 pm
Nonstop2h 01m
Boise Air Term. Gowen Fld
Mon 4/13
4:40 pm-5:45 pm
Nonstop2h 05m
$197
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Fri 4/10
5:30 pm-10:55 pm
1 stop4h 25m
Boise Air Term. Gowen Fld
Thu 4/16
1:20 pm-9:35 pm
1 stop9h 15m
$202
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Sat 5/2
7:00 am-9:24 am
Nonstop2h 24m
Portland
Tue 5/5
7:30 am-12:08 pm
1 stop4h 38m
$202
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Sun 4/5
7:00 am-9:28 am
Nonstop2h 28m
Portland
Wed 4/8
5:58 pm-8:23 pm
Nonstop2h 25m
$207
OntarioMedford
ONT - MFR
ONTMFR
Ontario
Wed 4/29
5:55 pm-10:34 am
1 stop16h 39m
Medford
Sun 5/3
5:28 pm-11:44 pm
2 stops30h 16m
$212
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 4/1
6:25 pm-6:19 am
1 stop11h 54m
Portland
Sat 4/11
5:58 pm-8:23 pm
Nonstop2h 25m
$220
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 4/10
7:00 am-9:28 am
Nonstop2h 28m
Portland
Mon 4/13
5:58 pm-8:23 pm
Nonstop2h 25m
$237
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-PDX
ONT-RDM
ONT-EUG
ONT-MFR
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-PDX
ONT-RDM
ONT-EUG
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 $63). Flying from Ontario to Oregon in February is currently the most expensive (average of $115). 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 March 15, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 40% 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 March 14, 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. Saturday 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 March 15, 2026.
The most flights from ONT to USOR are scheduled on a Monday (6 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).
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 March 15, 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.
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Entertainment
7.5
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 March 15, 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 March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$75 | Average$159 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$78 | Average$314 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$221 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$157 | Average$333 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$157 | Average$306 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$313 | FlexibilityNo cancel fee | On-time63% |