$88+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PDX
Jul 13 — Jul 201
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 June 13, 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 June 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 10/214:42 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Tue 10/272:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 10/204:42 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Thu 10/292:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 10/224:42 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Thu 10/292:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 6/10. 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 10/205:05 pm
ONT
- BOI
1 stop5h 59m
Delta
Tue 10/278:45 am
BOI
- ONT
1 stop4h 45m
Delta
Deal found 6/10![Delta logo]()
$203
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 10/245:05 pm
ONT
- BOI
1 stop5h 59m
Delta
Wed 10/285:45 pm
BOI
- ONT
1 stop7h 03m
Delta
Deal found 6/10![Delta logo]()
$205
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 10/194:42 pm
ONT
- BOI
Nonstop2h 00m
Alaska Airlines
Thu 10/292:51 pm
BOI
- ONT
Nonstop2h 11m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$207
This United Airlines deal was found by Cheapflights users on 6/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:01 am
ONT
- BOI
1 stop5h 30m
United Airlines
Mon 8/247:05 pm
BOI
- ONT
1 stop4h 54m
United Airlines
Deal found 6/8![United Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 6/10. 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 9/29:05 am
ONT
- BOI
1 stop6h 05m
Southwest
Sun 9/611:35 am
BOI
- ONT
1 stop4h 10m
Southwest
Deal found 6/10![Southwest logo]()
$211
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:05 pm
ONT
- BOI
1 stop3h 55m
Delta
Fri 9/115:45 pm
BOI
- ONT
1 stop5h 59m
Delta
Deal found 6/8![Delta logo]()
$215
This Southwest deal was found by Cheapflights users on 6/10. 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 9/12:10 pm
ONT
- BOI
2 stops7h 05m
Southwest
Sun 9/611:35 am
BOI
- ONT
1 stop4h 10m
Southwest
Deal found 6/10![Southwest logo]()
$216
This Priceline deal was found by Cheapflights users on 6/9. 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.
Sun 8/234:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Tue 9/13:02 pm
BOI
- ONT
Nonstop2h 08m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 6/10. 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 10/205:05 pm
ONT
- BOI
1 stop5h 59m
Delta
Fri 10/305:45 pm
BOI
- ONT
1 stop7h 03m
Delta
Deal found 6/10![Delta logo]()
$220
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 June 13, 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 June 13, 2026.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:00 pm
ONT
- PDX
1 stop5h 16m
Delta
Sun 9/205:30 am
PDX
- ONT
1 stop5h 34m
Delta
Deal found 6/11![Delta logo]()
$242
This Southwest deal was found by Cheapflights users on 6/12. 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 7/246:35 pm
ONT
- PDX
1 stop4h 50m
Southwest
Sun 7/265:20 am
PDX
- ONT
1 stop5h 55m
Southwest
Deal found 6/12![Southwest logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Tue 9/84:50 pm
ONT
- BOI
Nonstop1h 55m
Alaska Airlines
Fri 9/114:20 pm
BOI
- ONT
1 stop8h 04m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 9/26:08 am
ONT
- PDX
1 stop4h 03m
United Airlines
Tue 9/87:00 am
PDX
- ONT
1 stop7h 01m
United Airlines
Deal found 6/12![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:20 am
ONT
- PDX
1 stop5h 21m
Delta
Fri 7/243:30 pm
PDX
- ONT
1 stop7h 22m
Delta
Deal found 6/8![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 6/12. 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.
Sun 8/92:40 pm
ONT
- PDX
1 stop4h 35m
Southwest
Tue 8/116:35 am
PDX
- ONT
2 stops6h 05m
Southwest
Deal found 6/12![Southwest logo]()
$252
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
ONT
- BOI
1 stop5h 14m
Delta
Tue 9/811:35 am
BOI
- ONT
1 stop5h 39m
Delta
Deal found 6/8![Delta logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 7/1410:54 am
ONT
- RDM
1 stop4h 26m
Alaska Airlines
Wed 7/227:49 pm
RDM
- ONT
1 stop4h 03m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 6/8. 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 9/34:10 pm
ONT
- BOI
2 stops6h 25m
Southwest
Tue 9/87:40 am
BOI
- ONT
1 stop3h 35m
Southwest
Deal found 6/8![Southwest logo]()
$264
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 8/266:20 am
ONT
- RDM
1 stop6h 52m
Delta
Wed 9/25:10 am
RDM
- ONT
1 stop7h 06m
Delta
Deal found 6/12![Delta logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 8/75:32 pm
ONT
- PDX
Nonstop2h 17m
Alaska Airlines
Tue 8/117:36 am
PDX
- ONT
Nonstop2h 20m
Alaska Airlines
Deal found 6/10![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 6/306:00 am
ONT
- MFR
1 stop6h 04m
United Airlines
Tue 6/306:35 pm
MFR
- ONT
1 stop4h 02m
United Airlines
Deal found 6/9![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 6/12. 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.
Sat 8/1511:00 am
ONT
- PDX
1 stop5h 40m
Southwest
Tue 8/185:50 am
PDX
- ONT
2 stops7h 45m
Southwest
Deal found 6/12![Southwest logo]()
$282
This Delta deal was found by Cheapflights users on 6/10. 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 7/35:21 pm
ONT
- RDM
1 stop6h 38m
Delta
Tue 7/76:13 am
RDM
- ONT
1 stop5h 04m
Delta
Deal found 6/10![Delta logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 7/115:32 pm
ONT
- PDX
Nonstop2h 17m
Alaska Airlines
Mon 7/137:36 am
PDX
- ONT
Nonstop2h 20m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/306:08 am
ONT
- PDX
1 stop4h 03m
United Airlines
Sun 8/303:43 pm
PDX
- ONT
1 stop4h 18m
United Airlines
Deal found 6/12![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am
ONT
- RDM
1 stop5h 45m
Delta
Fri 9/185:15 am
RDM
- ONT
1 stop6h 55m
Delta
Deal found 6/11![Delta logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/96:00 am
ONT
- MFR
1 stop6h 04m
United Airlines
Thu 7/166:35 pm
MFR
- ONT
1 stop4h 02m
United Airlines
Deal found 6/11![United Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 6/9. 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.
Mon 8/245:05 pm
ONT
- RDM
1 stop6h 44m
Delta
Sat 8/295:10 am
RDM
- ONT
1 stop7h 06m
Delta
Deal found 6/9![Delta logo]()
$259
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 7/285:32 pm
ONT
- PDX
Nonstop2h 17m
Alaska Airlines
Sun 8/27:36 am
PDX
- ONT
Nonstop2h 20m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$327
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Mon 7/206:00 am
ONT
- MFR
1 stop6h 04m
United Airlines
Thu 7/236:00 am
MFR
- ONT
1 stop6h 12m
United Airlines
Deal found 6/9![United Airlines logo]()
$333
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:30 pm
ONT
- PDX
1 stop4h 50m
Southwest
Fri 6/265:20 pm
PDX
- ONT
1 stop4h 10m
Southwest
Deal found 6/9![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 6/11. 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 9/166:20 am
ONT
- RDM
1 stop6h 33m
Delta
Fri 9/185:15 am
RDM
- ONT
1 stop6h 55m
Delta
Deal found 6/11![Delta logo]()
$259
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:20 pm
ONT
- MFR
1 stop12h 34m
Alaska Airlines
Mon 7/137:50 pm
MFR
- ONT
1 stop15h 24m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$333
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 6/266:39 pm
ONT
- RDM
1 stop4h 20m
United Airlines
Sat 6/275:55 am
RDM
- ONT
1 stop6h 17m
United Airlines
Deal found 6/11![United Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 6/13. 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.
Sun 7/197:00 pm
ONT
- BOI
1 stop5h 25m
Southwest
Sun 7/266:15 am
BOI
- ONT
1 stop6h 00m
Southwest
Deal found 6/13![Southwest logo]()
$367
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 8/145:26 pm
ONT
- PDX
1 stop6h 56m
Alaska Airlines
Mon 8/177:36 am
PDX
- ONT
Nonstop2h 20m
Alaska Airlines
Deal found 6/12![Alaska Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 6/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
ONT
- RDM
1 stop6h 12m
United Airlines
Thu 7/165:55 am
RDM
- ONT
1 stop6h 17m
United Airlines
Deal found 6/8![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 7/185:10 pm
ONT
- RDM
1 stop5h 22m
Delta
Mon 7/206:13 am
RDM
- ONT
1 stop5h 04m
Delta
Deal found 6/10![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:52 pm
ONT
- RDM
1 stop4h 20m
United Airlines
Sun 10/46:00 am
RDM
- ONT
1 stop6h 18m
United Airlines
Deal found 6/9![United Airlines logo]()
$339
Last-minute flights from Ontario to OregonDiscover last-minute flight deals from Ontario to Oregon. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Oregon. Data last updated June 13, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/12. 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 6/306:00 am
ONT
- PDX
1 stop10h 35m
Frontier
Wed 7/85:21 pm
PDX
- ONT
1 stop6h 29m
Frontier
Deal found 6/12![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 6/12. 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 6/306:00 am
ONT
- PDX
1 stop10h 35m
Frontier
Sat 7/412:26 pm
PDX
- ONT
1 stop11h 23m
Frontier
Deal found 6/12![Frontier logo]()
$248
This Frontier deal was found by Cheapflights users on 6/12. 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.
Sat 7/410:50 am
ONT
- PDX
1 stop6h 07m
Frontier
Wed 7/85:21 pm
PDX
- ONT
1 stop6h 29m
Frontier
Deal found 6/12![Frontier logo]()
$235
This Super.com deal was found by Cheapflights users on 6/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:50 am
ONT
- PDX
1 stop6h 07m
Frontier
Tue 7/145:16 pm
PDX
- ONT
1 stop6h 34m
Frontier
Deal found 6/13![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 6/12. 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.
Sun 7/56:00 am
ONT
- BOI
1 stop5h 29m
Frontier
Thu 7/91:24 pm
BOI
- ONT
1 stop11h 26m
Frontier
Deal found 6/12![Frontier logo]()
$248
This Southwest deal was found by Cheapflights users on 6/8. 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.
Mon 7/66:30 pm
ONT
- PDX
1 stop4h 55m
Southwest
Mon 7/135:20 am
PDX
- ONT
1 stop6h 00m
Southwest
Deal found 6/8![Southwest logo]()
$247
This Expedia deal was found by Cheapflights users on 6/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:40 pm
ONT
- PDX
1 stop26h 24m
Frontier
Wed 7/155:21 pm
PDX
- ONT
1 stop16h 43m
Frontier
Deal found 6/12![Frontier logo]()
$230
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Wed 7/83:40 pm
ONT
- PDX
1 stop26h 24m
Frontier
Sat 7/1112:20 pm
PDX
- ONT
1 stop21h 44m
Frontier
Deal found 6/10![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 6/12. 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.
Thu 7/910:49 am
ONT
- PDX
1 stop6h 02m
Frontier
Sat 7/1112:20 pm
PDX
- ONT
1 stop11h 30m
Frontier
Deal found 6/12![Frontier logo]()
$240
This Southwest deal was found by Cheapflights users on 6/11. 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 7/94:40 pm
ONT
- PDX
1 stop5h 30m
Southwest
Sat 7/119:00 am
PDX
- ONT
1 stop3h 45m
Southwest
Deal found 6/11![Southwest logo]()
$242
This Frontier deal was found by Cheapflights users on 6/12. 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.
Sat 7/116:00 am
ONT
- PDX
1 stop10h 51m
Frontier
Mon 7/135:49 pm
PDX
- ONT
1 stop14h 14m
Frontier
Deal found 6/12![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 6/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:00 am
ONT
- PDX
1 stop10h 51m
Frontier
Tue 7/145:16 pm
PDX
- ONT
1 stop6h 34m
Frontier
Deal found 6/11![Frontier logo]()
$244
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 June 13, 2026.
Search for one-way flight options from Ontario to Oregon. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:20 am
ONT
- PDX
1 stop5h 25m
Delta
Deal found 6/8![Delta logo]()
$88
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:40 pm
ONT
- PDX
1 stop4h 35m
Southwest
Deal found 6/9![Southwest logo]()
$99
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/199:01 am
ONT
- BOI
1 stop5h 30m
United Airlines
Deal found 6/10![United Airlines logo]()
$99
This Delta deal was found by Cheapflights users on 6/10. 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 8/181:06 pm
ONT
- BOI
1 stop3h 49m
Delta
Deal found 6/10![Delta logo]()
$102
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/66:00 am
ONT
- PDX
1 stop4h 20m
United Airlines
Deal found 6/11![United Airlines logo]()
$104
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 8/221:06 pm
ONT
- BOI
1 stop4h 54m
Delta
Deal found 6/10![Delta logo]()
$104
This Frontier deal was found by Cheapflights users on 6/9. 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.
Tue 9/156:00 am
ONT
- PDX
1 stop8h 27m
Frontier
Deal found 6/9![Frontier logo]()
$105
This WAYA deal was found by Cheapflights users on 6/13. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:58 am
ONT
- PDX
1 stop4h 52m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$106
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 8/112:10 pm
ONT
- BOI
2 stops7h 05m
Southwest
Deal found 6/11![Southwest logo]()
$108
This Trip.com deal was found by Cheapflights users on 6/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am
ONT
- PDX
1 stop8h 27m
Frontier
Deal found 6/10![Frontier logo]()
$109
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 8/216:08 am
ONT
- BOI
1 stop3h 56m
United Airlines
Deal found 6/12![United Airlines logo]()
$109
This Super.com deal was found by Cheapflights users on 6/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
ONT
- PDX
1 stop10h 36m
Frontier
Deal found 6/11![Frontier logo]()
$110
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (Priceline) |
One-way from | $88 (Delta) |
Popular in | June |
Cheapest in | January |
Average price | $298 |
Good round-trip deal | $334 or less |
Good one-way deal | $223 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 June 13, 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
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 9/18
1:00 pm-6:16 pm
1 stop5h 16m
Portland
Sun 9/20
5:30 am-11:04 am
1 stop5h 34m
$242
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Fri 7/24
6:35 pm-11:25 pm
1 stop4h 50m
Portland
Sun 7/26
5:20 am-11:15 am
1 stop5h 55m
$247
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Wed 7/22
6:20 am-11:41 am
1 stop5h 21m
Portland
Fri 7/24
3:30 pm-10:52 pm
1 stop7h 22m
$247
OntarioPortland
ONT - PDX
ONTPDX
Ontario
Sun 8/9
2:40 pm-7:15 pm
1 stop4h 35m
Portland
Tue 8/11
6:35 am-12:40 pm
2 stops6h 05m
$252
OntarioBoise
ONT - BOI
ONTBOI
Ontario
Thu 9/3
6:00 am-12:14 pm
1 stop5h 14m
Boise Air Term. Gowen Fld
Tue 9/8
11:35 am-4:14 pm
1 stop5h 39m
$255
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Wed 8/26
6:20 am-1:12 pm
1 stop6h 52m
Bend/Redmond
Wed 9/2
5:10 am-12:16 pm
1 stop7h 06m
$259
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Fri 7/3
5:21 pm-11:59 pm
1 stop6h 38m
Bend/Redmond
Tue 7/7
6:13 am-11:17 am
1 stop5h 04m
$259
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Thu 9/17
6:00 am-11:45 am
1 stop5h 45m
Bend/Redmond
Fri 9/18
5:15 am-12:10 pm
1 stop6h 55m
$259
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Mon 8/24
5:05 pm-11:49 pm
1 stop6h 44m
Bend/Redmond
Sat 8/29
5:10 am-12:16 pm
1 stop7h 06m
$259
OntarioRedmond
ONT - RDM
ONTRDM
Ontario
Wed 9/16
6:20 am-12:53 pm
1 stop6h 33m
Bend/Redmond
Fri 9/18
5:15 am-12:10 pm
1 stop6h 55m
$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-PDX
ONT-MFR
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-PDX
ONT-MFR
ONT-RDM
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 June 13, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 67% on flights from Ontario to Oregon by exploring options for tickets in the evening.
How much does it cost to fly round-trip from Ontario to Oregon?
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 35 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 13, 2026.
Travelers seeking maximum savings on their Ontario to Oregon flight should consider departing on Friday evenings 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.
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 June 13, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, 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
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.1
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentFranzi,Mar 2026
SFO - PDX
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 June 13, 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 7 airlines flying from Ontario to Oregon
Discover the top 7 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$76 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$78 | Average$318 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$81 | Average$199 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$108 | Average$194 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$157 | Average$350 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$166 | Average$380 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$166 | Average$320 | FlexibilityNo cancel fee | On-time63% |