$139+ Cheap flights from Portland (PDX) to Ontario
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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Portland to OntarioExplore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
Explore the most affordable flight options available from Portland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
This Booking.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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.
Sat 8/293:30 pm
PDX
- YYZ
2 stops12h 12m
Air Canada
Sat 9/59:25 am
YYZ
- PDX
1 stop8h 26m
Air Canada
Deal found 7/25![Air Canada logo]()
$307
This Flightnetwork deal was found by Cheapflights users on 7/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:30 pm
PDX
- YYZ
2 stops12h 11m
Air Canada
Fri 9/258:00 am
YYZ
- PDX
2 stops14h 11m
Air Canada
Deal found 7/26![Air Canada logo]()
$331
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:30 pm
PDX
- YYZ
2 stops12h 11m
Air Canada
Tue 9/1510:25 pm
YYZ
- PDX
1 stop14h 06m
Air Canada
Deal found 7/25![Air Canada logo]()
$332
This Flightnetwork deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:30 pm
PDX
- YUL
2 stops12h 40m
Air Canada
Wed 9/237:30 am
YUL
- PDX
1 stop10h 16m
Air Canada
Deal found 7/24![Air Canada logo]()
$334
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:45 am
PDX
- YYZ
1 stop12h 14m
Delta
Tue 9/2212:25 pm
YYZ
- PDX
1 stop10h 51m
Delta
Deal found 7/24![Delta logo]()
$343
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/2911:02 pm
PDX
- YYZ
1 stop9h 47m
United Airlines
Sat 9/54:18 pm
YYZ
- PDX
1 stop7h 47m
United Airlines
Deal found 7/25![United Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 8/255:00 am
PDX
- YYZ
1 stop7h 14m
United Airlines
Tue 9/110:45 am
YYZ
- PDX
2 stops10h 34m
United Airlines
Deal found 7/26![United Airlines logo]()
$348
This Trip.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:30 pm
PDX
- YYZ
1 stop7h 35m
Multiple Airlines
Sun 10/1810:25 pm
YYZ
- PDX
1 stop14h 06m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$350
This Flightnetwork deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/73:30 pm
PDX
- YYZ
1 stop7h 05m
Air Canada
Mon 9/1410:25 pm
YYZ
- PDX
1 stop14h 06m
Air Canada
Deal found 7/24![Air Canada logo]()
$352
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/222:27 pm
PDX
- YYZ
1 stop6h 32m
United Airlines
Sat 8/298:50 am
YYZ
- PDX
2 stops9h 15m
United Airlines
Deal found 7/26![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/97:15 pm
PDX
- YUL
1 stop10h 01m
United Airlines
Thu 9/1011:23 am
YUL
- PDX
2 stops12h 42m
United Airlines
Deal found 7/25![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 8/1311:02 pm
PDX
- YYZ
1 stop13h 44m
United Airlines
Tue 8/188:00 pm
YYZ
- PDX
1 stop16h 50m
United Airlines
Deal found 7/27![United Airlines logo]()
$356
Best flights from Portland to OntarioDiscover carefully curated flight deals from Portland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated flight deals from Portland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/811:18 pm
PDX
- YYZ
1 stop9h 25m
United Airlines
Tue 9/1511:00 am
YYZ
- PDX
1 stop7h 56m
United Airlines
Deal found 7/25![United Airlines logo]()
$343
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:43 pm
PDX
- YUL
1 stop13h 33m
Multiple Airlines
Sat 8/297:30 am
YUL
- PDX
1 stop10h 21m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am
PDX
- YYZ
1 stop12h 51m
Delta
Sun 11/1512:14 pm
YYZ
- PDX
1 stop13h 12m
Delta
Deal found 7/25![Delta logo]()
$371
This Air Canada deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:02 pm
PDX
- YTZ
1 stop8h 05m
Air Canada
Sat 9/1912:15 pm
YTZ
- PDX
1 stop10h 03m
Air Canada
Deal found 7/23![Air Canada logo]()
$453
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/168:25 am
PDX
- YYZ
1 stop7h 37m
United Airlines
Sat 9/1911:00 am
YYZ
- PDX
2 stops9h 49m
United Airlines
Deal found 7/27![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/1311:02 pm
PDX
- YYZ
1 stop13h 44m
United Airlines
Tue 8/188:00 pm
YYZ
- PDX
1 stop16h 50m
United Airlines
Deal found 7/25![United Airlines logo]()
$356
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:45 am
PDX
- YYZ
1 stop11h 28m
Delta
Mon 9/2812:25 pm
YYZ
- PDX
1 stop10h 51m
Delta
Deal found 7/22![Delta logo]()
$403
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 8/257:16 am
PDX
- YYZ
1 stop9h 24m
United Airlines
Thu 8/277:30 am
YYZ
- PDX
1 stop17h 29m
United Airlines
Deal found 7/27![United Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 7/26. 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 9/2411:30 pm
PDX
- YYZ
1 stop9h 19m
United Airlines
Sat 10/37:00 am
YYZ
- PDX
1 stop7h 33m
United Airlines
Deal found 7/26![United Airlines logo]()
$357
This Expedia deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:30 pm
PDX
- YOW
1 stop7h 10m
Multiple Airlines
Sun 8/237:00 am
YOW
- PDX
2 stops12h 51m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$510
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 9/3011:30 pm
PDX
- YUL
1 stop15h 00m
United Airlines
Mon 10/56:35 pm
YUL
- PDX
1 stop8h 59m
United Airlines
Deal found 7/26![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 10/147:02 am
PDX
- YUL
1 stop7h 28m
United Airlines
Tue 10/209:45 am
YUL
- PDX
1 stop15h 38m
United Airlines
Deal found 7/27![United Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/168:25 am
PDX
- YUL
1 stop8h 20m
United Airlines
Tue 9/296:10 am
YUL
- PDX
1 stop8h 23m
United Airlines
Deal found 7/25![United Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/511:10 pm
PDX
- YOW
2 stops15h 25m
Delta
Wed 10/147:20 am
YOW
- PDX
1 stop9h 30m
Delta
Deal found 7/24![Delta logo]()
$589
This United deal was found by Cheapflights users on 7/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:30 pm
PDX
- YOW
1 stop7h 26m
Multiple Airlines
Thu 8/275:10 am
YOW
- PDX
2 stops12h 41m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$611
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:33 pm
PDX
- YYZ
1 stop17h 27m
United Airlines
Thu 10/225:15 pm
YYZ
- PDX
1 stop8h 08m
United Airlines
Deal found 7/24![United Airlines logo]()
$371
This United deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1011:30 pm
PDX
- YOW
1 stop7h 26m
Multiple Airlines
Mon 8/246:05 pm
YOW
- PDX
2 stops18h 26m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$621
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 9/1811:02 pm
PDX
- YYZ
1 stop11h 40m
United Airlines
Sun 9/2010:45 am
YYZ
- PDX
1 stop14h 18m
United Airlines
Deal found 7/27![United Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 8/1711:02 pm
PDX
- YUL
1 stop8h 38m
United Airlines
Tue 8/256:10 am
YUL
- PDX
1 stop8h 18m
United Airlines
Deal found 7/27![United Airlines logo]()
$371
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sun 9/2011:02 pm
PDX
- YUL
1 stop8h 38m
United Airlines
Thu 9/246:35 pm
YUL
- PDX
1 stop8h 59m
United Airlines
Deal found 7/26![United Airlines logo]()
$372
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sun 9/2011:02 pm
PDX
- YUL
1 stop8h 38m
United Airlines
Sat 9/269:15 am
YUL
- PDX
1 stop13h 55m
United Airlines
Deal found 7/26![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/98:25 am
PDX
- YUL
1 stop8h 20m
United Airlines
Sun 9/139:15 am
YUL
- PDX
1 stop13h 55m
United Airlines
Deal found 7/25![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 9/168:25 am
PDX
- YUL
1 stop8h 20m
United Airlines
Sat 9/269:45 am
YUL
- PDX
2 stops11h 01m
United Airlines
Deal found 7/26![United Airlines logo]()
$375
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 9/1411:02 pm
PDX
- YUL
1 stop8h 38m
United Airlines
Wed 9/2311:23 am
YUL
- PDX
2 stops14h 30m
United Airlines
Deal found 7/25![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:27 pm
PDX
- YYZ
1 stop6h 32m
United Airlines
Sat 9/1210:45 am
YYZ
- PDX
2 stops10h 40m
United Airlines
Deal found 7/24![United Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:43 pm
PDX
- YYZ
1 stop12h 17m
United Airlines
Fri 8/211:00 pm
YYZ
- PDX
1 stop12h 52m
United Airlines
Deal found 7/22![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/1611:02 pm
PDX
- YTZ
1 stop8h 05m
United Airlines
Sat 9/1912:15 pm
YTZ
- PDX
1 stop10h 03m
United Airlines
Deal found 7/27![United Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/2211:02 pm
PDX
- YTZ
1 stop8h 16m
United Airlines
Sat 8/2912:15 pm
YTZ
- PDX
1 stop9h 38m
United Airlines
Deal found 7/26![United Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sun 10/1811:30 pm
PDX
- YTZ
1 stop7h 37m
United Airlines
Thu 10/2212:15 pm
YTZ
- PDX
1 stop9h 38m
United Airlines
Deal found 7/26![United Airlines logo]()
$448
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/275:00 am
PDX
- YTZ
2 stops10h 56m
United Airlines
Mon 8/3112:15 pm
YTZ
- PDX
1 stop13h 37m
United Airlines
Deal found 7/25![United Airlines logo]()
$458
Last-minute flights from Portland to OntarioDiscover last-minute flight deals from Portland to Ontario. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Ontario. Data last updated July 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 8/1311:02 pm
PDX
- YYZ
1 stop13h 44m
United Airlines
Tue 8/188:00 pm
YYZ
- PDX
1 stop16h 50m
United Airlines
Deal found 7/27![United Airlines logo]()
$356
This Flightnetwork deal was found by Cheapflights users on 7/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:45 pm
PDX
- YUL
2 stops13h 08m
Air Canada
Tue 8/257:30 am
YUL
- PDX
1 stop10h 21m
Air Canada
Deal found 7/26![Air Canada logo]()
$363
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:50 pm
PDX
- YYZ
1 stop18h 27m
American Airlines
Thu 9/311:39 am
YYZ
- PDX
1 stop15h 20m
American Airlines
Deal found 7/26![American Airlines logo]()
$357
This Trip.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:30 pm
PDX
- YUL
1 stop13h 35m
WestJet
Sat 8/297:15 am
YUL
- PDX
1 stop9h 35m
WestJet
Deal found 7/23![WestJet logo]()
$361
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 8/222:27 pm
PDX
- YYZ
1 stop6h 32m
United Airlines
Sat 8/296:10 am
YYZ
- PDX
1 stop8h 49m
United Airlines
Deal found 7/26![United Airlines logo]()
$343
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:43 pm
PDX
- YUL
1 stop13h 33m
Multiple Airlines
Sat 8/297:30 am
YUL
- PDX
1 stop10h 21m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 8/255:00 am
PDX
- YYZ
1 stop7h 14m
United Airlines
Tue 9/110:45 am
YYZ
- PDX
2 stops10h 34m
United Airlines
Deal found 7/26![United Airlines logo]()
$348
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:34 pm
PDX
- YYZ
2 stops10h 52m
American Airlines
Thu 8/2711:39 am
YYZ
- PDX
1 stop15h 20m
American Airlines
Deal found 7/26![American Airlines logo]()
$367
This Booking.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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.
Sat 8/293:30 pm
PDX
- YYZ
2 stops12h 12m
Air Canada
Sat 9/59:25 am
YYZ
- PDX
1 stop8h 26m
Air Canada
Deal found 7/25![Air Canada logo]()
$307
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/2911:02 pm
PDX
- YYZ
1 stop9h 47m
United Airlines
Sat 9/54:18 pm
YYZ
- PDX
1 stop7h 47m
United Airlines
Deal found 7/25![United Airlines logo]()
$344
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:02 pm
PDX
- YYZ
1 stop17h 38m
Multiple Airlines
Tue 9/812:15 pm
YYZ
- PDX
1 stop9h 56m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$363
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:02 pm
PDX
- YYZ
1 stop13h 44m
Multiple Airlines
Tue 9/227:45 am
YYZ
- PDX
2 stops10h 01m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$368
One-way flights from Portland to OntarioSearch for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Air Canada deal was found by Cheapflights users on 7/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:30 pm
PDX
- YYZ
1 stop7h 05m
Air Canada
Deal found 7/26![Air Canada logo]()
$139
This Delta deal was found by Cheapflights users on 7/27. 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 9/16:00 am
PDX
- YYZ
1 stop9h 34m
Delta
Deal found 7/27![Delta logo]()
$143
This Air Canada deal was found by Cheapflights users on 7/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:45 pm
PDX
- YUL
1 stop8h 25m
Air Canada
Deal found 7/26![Air Canada logo]()
$145
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:05 pm
PDX
- YYZ
2 stops10h 54m
American Airlines
Deal found 7/23![American Airlines logo]()
$148
This Air Canada deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/73:30 pm
PDX
- YYZ
1 stop7h 05m
Air Canada
Deal found 7/24![Air Canada logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Deal found 7/23![WestJet logo]()
$154
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 9/911:18 pm
PDX
- YUL
1 stop13h 52m
United Airlines
Deal found 7/26![United Airlines logo]()
$154
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:34 pm
PDX
- YYZ
1 stop9h 59m
American Airlines
Deal found 7/23![American Airlines logo]()
$157
This FlightHub deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Deal found 7/24![WestJet logo]()
$158
This American Airlines deal was found by Cheapflights users on 7/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:50 pm
PDX
- YYZ
1 stop7h 56m
American Airlines
Deal found 7/26![American Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 7/26. 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.
Wed 9/26:45 am
PDX
- YUL
2 stops13h 45m
Delta
Deal found 7/26![Delta logo]()
$159
This Air Canada deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:30 pm
PDX
- YYZ
2 stops11h 14m
Air Canada
Deal found 7/23![Air Canada logo]()
$160
Find flight deals from Portland to Ontario
Keep the following information in mind while searching for Portland to Ontario flight deals. Data was last updated July 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $307 (Booking.com) |
One-way from | $139 (Air Canada) |
Popular in | December |
Cheapest in | August |
Average price | $405 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 27, 2026.
Use the filters below to find and compare flights from Portland to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Tue 9/8
11:18 pm-11:43 am
1 stop9h 25m
Toronto Pearson Intl
Tue 9/15
11:00 am-3:56 pm
1 stop7h 56m
$343
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Wed 9/16
8:25 am-7:02 pm
1 stop7h 37m
Toronto Pearson Intl
Sat 9/19
11:00 am-5:49 pm
2 stops9h 49m
$353
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Thu 8/13
11:02 pm-3:46 pm
1 stop13h 44m
Toronto Pearson Intl
Tue 8/18
8:00 pm-9:50 am
1 stop16h 50m
$356
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Tue 8/25
7:16 am-7:40 pm
1 stop9h 24m
Toronto Pearson Intl
Thu 8/27
7:30 am-9:59 pm
1 stop17h 29m
$357
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Thu 9/24
11:30 pm-11:49 am
1 stop9h 19m
Toronto Pearson Intl
Sat 10/3
7:00 am-11:33 am
1 stop7h 33m
$357
PortlandMontreal
PDX - YUL
PDXYUL
Portland
Wed 9/30
11:30 pm-5:30 pm
1 stop15h 00m
Montreal Pierre Elliott Trudeau Intl
Mon 10/5
6:35 pm-12:34 am
1 stop8h 59m
$364
PortlandMontreal
PDX - YUL
PDXYUL
Portland
Wed 10/14
7:02 am-5:30 pm
1 stop7h 28m
Montreal Pierre Elliott Trudeau Intl
Tue 10/20
9:45 am-10:23 pm
1 stop15h 38m
$365
Quickest round-trip
PortlandMontreal
PDX - YUL
PDXYUL
Portland
Wed 9/16
8:25 am-7:45 pm
1 stop8h 20m
Montreal Pierre Elliott Trudeau Intl
Tue 9/29
6:10 am-11:33 am
1 stop8h 23m
$365
PortlandMontreal
PDX - YUL
PDXYUL
Portland
Sat 8/22
3:43 pm-8:16 am
1 stop13h 33m
Montreal Pierre Elliott Trudeau Intl
Sat 8/29
7:30 am-2:51 pm
1 stop10h 21m
$369
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Fri 11/13
7:00 am-10:51 pm
1 stop12h 51m
Toronto Pearson Intl
Sun 11/15
12:14 pm-10:26 pm
1 stop13h 12m
$371
Showing 1-10 of 54 resultsSorted by cheapest first
Best time to book a flight from Portland to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland with our price prediction graph.
PDX-YYZ
PDX-YUL
PDX-YTZ
PDX-YOW
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 Portland to Ontario
PDX-CAON
PDX-YYZ
PDX-YUL
PDX-YTZ
PDX-YOW
What is the cheapest month to book a flight from Portland to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $369). Flying from Portland to Region of Ontario in December is currently the most expensive (average of $613). 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.
How much does it cost to fly round-trip from Portland to Region of Ontario?
Airfare is below average for this route at the moment.
Portland to Region of Ontario flights typically cost between $316 and $557 in August.The cheapest round-trip price found within the last 5 days was $307 on Air Canada (Aug 29-Sep 5).
How far ahead should I book a flight from Portland to Region of Ontario?
Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated July 27, 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet from Portland to Ontario 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.
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Portland to Ontario. 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 Portland to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Ontario by cabin class
Find flights from Portland to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Ontario flights
Browse other Portland and Ontario flight options. Last updated on July 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Portland to Ontario
Discover the top 6 airlines that operate flights from Portland to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$290 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$142 | Average$622 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$142 | Average$422 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$177 | Average$600 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$545 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$351 | Average$498 | FlexibilityNo cancel fee | On-time71% |