$166+ Cheap flights from Portland (PDX) to Ontario
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Nov 28 — Dec 51
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 October 29, 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 October 29, 2026.
This Booking.com deal was found by Cheapflights users on 10/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
2 stops13h 40m
Fri 12/410:40 pm -
1 stop13h 46m
Deal found 10/27![Air Canada logo]()
$360
This Priceline deal was found by Cheapflights users on 10/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:05 am -
1 stop8h 00m
Wed 11/185:15 pm -
1 stop7h 40m
Deal found 10/26![Alaska Airlines logo]()
$368
This Travelocity deal was found by Cheapflights users on 10/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:05 am -
1 stop8h 00m
Tue 11/175:15 pm -
1 stop9h 39m
Deal found 10/24![Alaska Airlines logo]()
$378
This Air Canada deal was found by Cheapflights users on 10/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:00 am -
2 stops10h 57m
Sat 12/1212:00 pm -
2 stops11h 46m
Deal found 10/27![Air Canada logo]()
$391
This United deal was found by Cheapflights users on 10/26. 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.
Thu 11/127:26 pm -
1 stop9h 04m
Wed 11/188:00 am -
2 stops9h 41m
Deal found 10/26![Multiple Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/255:30 am -
1 stop7h 38m
Wed 12/24:10 pm -
1 stop8h 05m
Deal found 10/27![United Airlines logo]()
$402
This Trip.com deal was found by Cheapflights users on 10/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:30 am -
1 stop7h 35m
Tue 12/85:15 pm -
1 stop9h 40m
Deal found 10/27![Alaska Airlines logo]()
$405
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/87:00 am -
1 stop6h 47m
Sat 12/126:30 am -
1 stop8h 45m
Deal found 10/27![United Airlines logo]()
$406
This Priceline deal was found by Cheapflights users on 10/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:26 am -
1 stop6h 39m
Wed 12/165:15 pm -
1 stop7h 37m
Deal found 10/25![Alaska Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:08 am -
2 stops22h 49m
Sun 11/2210:30 am -
1 stop26h 01m
Deal found 10/26![Multiple Airlines logo]()
$635
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:30 pm -
1 stop14h 02m
Mon 11/305:45 pm -
2 stops18h 56m
Deal found 10/25![Multiple Airlines logo]()
$674
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:30 pm -
1 stop14h 02m
Fri 11/2712:50 pm -
2 stops12h 04m
Deal found 10/25![Multiple Airlines logo]()
$683
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 October 29, 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 October 29, 2026.
This United deal was found by Cheapflights users on 10/26. 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.
Thu 11/127:26 pm -
1 stop9h 04m
Wed 11/188:00 am -
2 stops9h 41m
Deal found 10/26![Multiple Airlines logo]()
$401
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/255:30 am -
1 stop7h 38m
Wed 12/24:10 pm -
1 stop8h 05m
Deal found 10/27![United Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:56 pm -
1 stop6h 15m
Sun 11/1512:20 pm -
1 stop12h 37m
Deal found 10/28![Delta logo]()
$406
This American Airlines deal was found by Cheapflights users on 10/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:49 pm -
2 stops15h 03m
Thu 11/127:00 am -
2 stops16h 42m
Deal found 10/24![American Airlines logo]()
$725
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/107:00 am -
2 stops13h 11m
Mon 1/187:50 am -
2 stops13h 41m
Deal found 10/28![Air Canada logo]()
$752
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/87:00 am -
1 stop6h 47m
Sat 12/126:30 am -
1 stop8h 45m
Deal found 10/25![United Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 10/26. 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.
Tue 11/2411:58 am -
1 stop8h 13m
Mon 12/216:10 am -
2 stops17h 50m
Deal found 10/26![Delta logo]()
$416
This Delta deal was found by Cheapflights users on 10/24. 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.
Thu 11/127:10 am -
1 stop12h 41m
Tue 11/1712:20 pm -
1 stop12h 37m
Deal found 10/24![Delta logo]()
$417
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:35 pm -
2 stops12h 44m
Sat 11/1412:20 pm -
2 stops13h 06m
Deal found 10/28![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 10/27. 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.
Sun 11/87:10 pm -
2 stops12h 59m
Mon 11/165:15 pm -
1 stop9h 31m
Deal found 10/27![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 10/26. 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 11/1112:35 am -
2 stops9h 55m
Sun 11/157:35 am -
1 stop8h 39m
Deal found 10/26![Delta logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:08 am -
2 stops22h 49m
Sun 11/2210:30 am -
1 stop26h 01m
Deal found 10/26![Multiple Airlines logo]()
$635
This Delta deal was found by Cheapflights users on 10/25. 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.
Mon 11/95:51 pm -
2 stops12h 04m
Thu 11/192:20 pm -
2 stops12h 16m
Deal found 10/25![Delta logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/119:35 pm -
1 stop13h 57m
Fri 12/188:00 am -
2 stops40h 21m
Deal found 10/27![Multiple Airlines logo]()
$703
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/2311:30 pm -
1 stop11h 39m
Fri 11/273:10 pm -
1 stop9h 48m
Deal found 10/25![United Airlines logo]()
$756
This United deal was found by Cheapflights users on 10/25. 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 11/911:10 pm -
1 stop11h 01m
Thu 11/125:45 am -
2 stops11h 56m
Deal found 10/25![Multiple Airlines logo]()
$755
This United deal was found by Cheapflights users on 10/25. 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 11/97:26 pm -
2 stops14h 45m
Fri 11/137:50 am -
2 stops13h 41m
Deal found 10/25![Multiple Airlines logo]()
$761
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/97:25 pm -
2 stops34h 07m
Wed 12/169:15 am -
2 stops16h 30m
Deal found 10/25![United Airlines logo]()
$911
This United deal was found by Cheapflights users on 10/25. 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 11/233:40 pm -
2 stops19h 29m
Fri 11/275:45 am -
2 stops11h 56m
Deal found 10/25![Multiple Airlines logo]()
$765
This United deal was found by Cheapflights users on 10/25. 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.
Wed 12/23:44 pm -
2 stops18h 27m
Sun 12/610:05 am -
2 stops13h 41m
Deal found 10/25![Multiple Airlines logo]()
$769
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/99:53 pm -
1 stop16h 07m
Wed 12/166:40 am -
2 stops31h 36m
Deal found 10/25![Multiple Airlines logo]()
$814
Last-minute flights from Portland to OntarioDiscover last-minute flight deals from Portland to Ontario. Data last updated October 29, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Ontario. Data last updated October 29, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/27. 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.
Sun 11/810:15 pm -
1 stop10h 04m
Mon 11/1612:20 pm -
1 stop12h 37m
Deal found 10/27![Delta logo]()
$411
This United deal was found by Cheapflights users on 10/26. 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.
Thu 11/127:26 pm -
1 stop9h 04m
Wed 11/188:00 am -
2 stops9h 41m
Deal found 10/26![Multiple Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 10/27. 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.
Thu 11/1211:10 pm -
1 stop8h 59m
Tue 11/176:30 am -
1 stop7h 14m
Deal found 10/27![Delta logo]()
$406
This Travelocity deal was found by Cheapflights users on 10/24. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:05 am -
1 stop8h 00m
Tue 11/175:15 pm -
1 stop9h 39m
Deal found 10/24![Alaska Airlines logo]()
$378
This Air Canada deal was found by Cheapflights users on 10/26. 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.
Fri 11/137:10 pm -
1 stop8h 42m
Fri 11/206:15 am -
2 stops15h 16m
Deal found 10/26![Air Canada logo]()
$415
This Priceline deal was found by Cheapflights users on 10/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:05 am -
1 stop8h 00m
Wed 11/185:15 pm -
1 stop7h 40m
Deal found 10/26![Alaska Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:08 am -
2 stops22h 49m
Sun 11/2210:30 am -
1 stop26h 01m
Deal found 10/26![Multiple Airlines logo]()
$635
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:30 pm -
1 stop14h 02m
Mon 11/305:45 pm -
2 stops18h 56m
Deal found 10/25![Multiple Airlines logo]()
$674
This Kiwi.com deal was found by Cheapflights users on 10/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:30 pm -
1 stop14h 02m
Fri 11/2712:50 pm -
2 stops12h 04m
Deal found 10/25![Multiple Airlines logo]()
$683
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/255:30 am -
1 stop7h 38m
Wed 12/24:10 pm -
1 stop8h 05m
Deal found 10/27![United Airlines logo]()
$402
This Booking.com deal was found by Cheapflights users on 10/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:00 am -
2 stops13h 40m
Fri 12/410:40 pm -
1 stop13h 46m
Deal found 10/27![Air Canada logo]()
$360
This Trip.com deal was found by Cheapflights users on 10/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:30 am -
1 stop7h 35m
Tue 12/85:15 pm -
1 stop9h 40m
Deal found 10/27![Alaska Airlines logo]()
$405
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 October 29, 2026.
Search for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Data last updated October 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/47:28 am -
1 stop11h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$166
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:10 pm -
1 stop8h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Air Canada logo]()
$170
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/23:44 pm -
1 stop12h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$172
This Air Canada deal was found by Cheapflights users on 10/26. 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.
Mon 11/237:10 pm -
1 stop8h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Air Canada logo]()
$173
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:49 pm -
1 stop10h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![American Airlines logo]()
$174
This American Airlines deal was found by Cheapflights users on 10/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:13 pm -
2 stops9h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am -
2 stops12h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Delta logo]()
$179
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 11/201:19 pm -
1 stop7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![American Airlines logo]()
$182
This Delta deal was found by Cheapflights users on 10/24. 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 11/117:35 pm -
2 stops10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$185
This United Airlines deal was found by Cheapflights users on 10/27. 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 3/317:11 am -
1 stop9h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$186
This United Airlines deal was found by Cheapflights users on 10/24. 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.
Thu 12/172:26 pm -
1 stop6h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![United Airlines logo]()
$190
This Trip.com deal was found by Cheapflights users on 10/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:00 am -
2 stops14h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$225
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 October 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $360 (Booking.com) |
One-way from | $166 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $416 |
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 7,457,451 searches. Data last updated October 29, 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 Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Sat 12/26
7:10 pm-6:52 am
1 stop8h 42m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$170
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Wed 12/2
3:44 pm-7:30 am
1 stop12h 46m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$172
Quickest round-trip
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 12/11
2:26 pm-11:59 pm
1 stop6h 33m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$172
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 11/13
11:49 pm-1:06 pm
1 stop10h 17m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$174
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Wed 11/11
3:15 pm-6:16 am
2 stops12h 01m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$175
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 11/13
6:45 am-9:57 pm
1 stop12h 12m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Sat 12/26
10:25 pm-3:14 pm
2 stops13h 49m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Mon 11/23
9:00 am-11:59 pm
2 stops11h 59m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 11/13
12:35 am-4:15 pm
2 stops12h 40m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 11/13
7:26 pm-2:03 pm
2 stops15h 37m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$179
Showing 1-10 of 38 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-YOW
PDX-YXU
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-YOW
PDX-YXU
What is the cheapest month to book a flight from Portland to Region of Ontario?
Currently, August is the cheapest month in which you can book a flight from Portland to Region of Ontario (average of $384). Flying from Portland to Region of Ontario in December is currently the most expensive (average of $596). 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 typical for this route at the moment.
Portland to Region of Ontario flights typically cost between $186 and $602 in November.The cheapest round-trip price found within the last 5 days was $360 on Air Canada (Nov 27-Dec 4).
How far ahead should I book a flight from Portland to Region of Ontario?
Booking 85 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 October 29, 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.
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
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
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Complete your trip
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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 October 29, 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 7,457,451 searches. Data last updated October 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$290 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$142 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$146 | Average$605 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$165 | Average$624 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$578 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$355 | Average$432 | FlexibilityNo cancel fee | On-time71% |