$133+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — YYZ
Oct 12 — Oct 191
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 September 12, 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 September 12, 2026.
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:30 pm -
1 stop7h 35m
Sun 10/48:00 am -
1 stop8h 50m
Deal found 9/9![WestJet logo]()
$302
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:30 pm -
2 stops11h 40m
Sun 10/119:00 am -
1 stop7h 50m
Deal found 9/10![WestJet logo]()
$304
This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:10 am -
1 stop7h 26m
Fri 10/167:15 am -
1 stop9h 35m
Deal found 9/12![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop7h 35m
Sun 10/119:00 am -
1 stop7h 50m
Deal found 9/7![WestJet logo]()
$319
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:10 am -
1 stop7h 26m
Fri 10/237:30 am -
1 stop10h 16m
Deal found 9/9![Air Canada logo]()
$326
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:00 am -
1 stop7h 30m
Mon 11/97:30 am -
1 stop10h 11m
Deal found 9/10![Air Canada logo]()
$328
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Wed 9/302:30 pm -
2 stops11h 40m
Sat 10/315:15 pm -
1 stop8h 47m
Deal found 9/8![Multiple Airlines logo]()
$338
This FlightHub deal was found by Cheapflights users on 9/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:30 pm -
2 stops11h 40m
Wed 9/304:55 pm -
1 stop8h 06m
Deal found 9/12![Multiple Airlines logo]()
$339
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm -
2 stops19h 15m
Sun 9/278:00 am -
1 stop8h 50m
Deal found 9/8![WestJet logo]()
$340
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1510:00 am -
1 stop7h 30m
Mon 11/167:30 am -
1 stop16h 16m
Deal found 9/9![Air Canada logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:30 pm -
1 stop13h 35m
Sun 10/47:15 am -
1 stop9h 35m
Deal found 9/8![WestJet logo]()
$350
This Air Canada deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/2410:10 am -
1 stop7h 26m
Wed 10/287:30 am -
1 stop10h 11m
Deal found 9/7![Air Canada logo]()
$358
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 September 12, 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 September 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop7h 35m
Sun 10/1110:20 pm -
2 stops18h 30m
Deal found 9/7![WestJet logo]()
$358
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/207:33 pm -
1 stop9h 43m
Wed 10/2111:23 am -
1 stop13h 04m
Deal found 9/11![United Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 9/9. 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.
Wed 11/1111:20 pm -
1 stop6h 35m
Sat 11/146:30 am -
1 stop8h 58m
Deal found 9/9![Delta logo]()
$374
This United deal was found by Cheapflights users on 9/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:33 pm -
1 stop14h 37m
Thu 10/157:30 am -
1 stop10h 16m
Deal found 9/8![Multiple Airlines logo]()
$390
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:30 pm -
1 stop7h 43m
Thu 10/112:15 pm -
1 stop9h 38m
Deal found 9/8![Air Canada logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 -
1 stop12h 05m
Sat 10/176:15 pm -
2 stops22h 35m
Deal found 9/7![WestJet logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/162:35 pm -
1 stop6h 24m
Sun 1/1710:53 am -
1 stop10h 46m
Deal found 9/10![United Airlines logo]()
$374
This Delta deal was found by Cheapflights users on 9/12. 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.
Thu 10/811:12 pm -
1 stop11h 24m
Sun 10/1111:38 am -
1 stop13h 11m
Deal found 9/12![Delta logo]()
$389
This oojo deal was found by Cheapflights users on 9/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:30 pm -
2 stops19h 00m
Wed 10/146:55 am -
2 stops9h 55m
Deal found 9/10![WestJet logo]()
$387
This United Airlines deal was found by Cheapflights users on 9/8. 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 11/107:00 am -
1 stop6h 47m
Sat 11/146:30 am -
1 stop11h 07m
Deal found 9/8![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 10/111:49 am -
1 stop9h 10m
Mon 10/55:54 pm -
1 stop8h 46m
Deal found 9/9![Delta logo]()
$389
This Air Canada deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 2/1610:59 pm -
1 stop8h 07m
Thu 2/2512:10 pm -
1 stop10h 07m
Deal found 9/7![Air Canada logo]()
$435
This United deal was found by Cheapflights users on 9/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:30 pm -
1 stop11h 39m
Thu 11/267:50 am -
2 stops13h 41m
Deal found 9/11![Multiple Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 10/147:02 am -
1 stop7h 54m
Wed 10/211:00 pm -
1 stop8h 53m
Deal found 9/11![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 9/8. 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 10/15:40 am -
1 stop8h 04m
Sun 10/412:25 pm -
1 stop10h 51m
Deal found 9/8![Delta logo]()
$389
This United deal was found by Cheapflights users on 9/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:33 pm -
1 stop15h 05m
Thu 10/226:00 am -
2 stops11h 46m
Deal found 9/11![Multiple Airlines logo]()
$457
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:45 pm -
1 stop17h 38m
Wed 10/217:30 pm -
2 stops17h 01m
Deal found 9/9![Air Canada logo]()
$457
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:30 pm -
1 stop7h 24m
Thu 10/156:30 am -
1 stop10h 57m
Deal found 9/10![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/226:00 am -
2 stops14h 50m
Sun 9/2712:48 pm -
1 stop12h 11m
Deal found 9/9![Delta logo]()
$403
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/275:35 am -
1 stop7h 33m
Sat 10/316:45 am -
1 stop11h 35m
Deal found 9/7![United Airlines logo]()
$389
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:30 pm -
1 stop7h 37m
Tue 10/612:15 pm -
1 stop9h 38m
Deal found 9/11![Air Canada logo]()
$485
This Delta deal was found by Cheapflights users on 9/8. 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.
Mon 12/711:32 am -
2 stops9h 11m
Wed 12/166:00 am -
2 stops16h 15m
Deal found 9/8![Delta logo]()
$415
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Mon 10/1910:33 pm -
1 stop7h 46m
Wed 10/286:30 am -
1 stop11h 07m
Deal found 9/8![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Sun 11/110:47 am -
1 stop7h 28m
Wed 11/46:30 am -
1 stop11h 04m
Deal found 9/8![United Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:01 am -
1 stop11h 05m
Thu 11/510:35 am -
1 stop9h 15m
Deal found 9/11![Multiple Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/142:27 pm -
1 stop17h 13m
Tue 10/209:45 am -
1 stop15h 38m
Deal found 9/12![United Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/119:59 pm -
2 stops14h 07m
Wed 12/1610:35 am -
1 stop9h 02m
Deal found 9/8![Multiple Airlines logo]()
$635
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Mon 12/77:25 pm -
2 stops15h 03m
Wed 12/166:00 am -
2 stops15h 23m
Deal found 9/11![United Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:38 pm -
2 stops22h 47m
Sun 10/48:15 pm -
1 stop16h 17m
Deal found 9/11![Multiple Airlines logo]()
$662
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/208:30 am -
1 stop10h 05m
Wed 10/212:52 pm -
1 stop8h 18m
Deal found 9/8![United Airlines logo]()
$453
Last-minute flights from Portland to OntarioDiscover last-minute flight deals from Portland to Ontario. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Ontario. Data last updated September 12, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 9/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm -
2 stops19h 15m
Sun 9/278:00 am -
1 stop8h 50m
Deal found 9/8![WestJet logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:30 pm -
1 stop13h 35m
Sun 10/47:15 am -
1 stop9h 35m
Deal found 9/8![WestJet logo]()
$350
This Trip.com deal was found by Cheapflights users on 9/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:30 pm -
1 stop7h 35m
Sun 10/48:00 am -
1 stop8h 50m
Deal found 9/9![WestJet logo]()
$302
This FlightHub deal was found by Cheapflights users on 9/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:30 pm -
2 stops11h 40m
Wed 9/304:55 pm -
1 stop8h 06m
Deal found 9/12![Multiple Airlines logo]()
$339
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Wed 9/302:30 pm -
2 stops11h 40m
Sat 10/315:15 pm -
1 stop8h 47m
Deal found 9/8![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:30 pm -
2 stops11h 40m
Sun 10/119:00 am -
1 stop7h 50m
Deal found 9/10![WestJet logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/92:30 pm -
1 stop7h 35m
Sun 10/119:00 am -
1 stop7h 50m
Deal found 9/7![WestJet logo]()
$319
This Trip.com deal was found by Cheapflights users on 9/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:10 am -
1 stop7h 26m
Fri 10/167:15 am -
1 stop9h 35m
Deal found 9/12![Multiple Airlines logo]()
$315
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:10 am -
1 stop7h 26m
Sat 10/178:30 am -
1 stop13h 41m
Deal found 9/9![Air Canada logo]()
$347
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:10 am -
1 stop7h 26m
Fri 10/237:30 am -
1 stop10h 16m
Deal found 9/9![Air Canada logo]()
$326
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:10 am -
1 stop7h 26m
Sat 10/317:30 am -
1 stop10h 11m
Deal found 9/9![Air Canada logo]()
$328
This Air Canada deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 10/2410:10 am -
1 stop7h 26m
Wed 10/287:30 am -
1 stop10h 11m
Deal found 9/7![Air Canada logo]()
$358
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 September 12, 2026.
Search for one-way flight options from Portland to Ontario. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:30 pm -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$133
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/157:10 pm -
1 stop9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:30 pm -
2 stops11h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![WestJet logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” 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 9/232:30 pm -
2 stops11h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![WestJet logo]()
$147
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:45 pm -
1 stop16h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$156
This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:45 pm -
1 stop10h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$157
This Delta deal was found by Cheapflights users on 9/8. 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 10/711:52 am -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Delta logo]()
$158
This Air Canada deal was found by Cheapflights users on 9/10. 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 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$161
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Wed 9/3010:43 am -
1 stop7h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$163
This United Airlines deal was found by Cheapflights users on 9/8. 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 9/2210:50 am -
1 stop7h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![United Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 10/811:12 pm -
1 stop11h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$165
This Air Canada deal was found by Cheapflights users on 9/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:10 am -
2 stops10h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Air Canada logo]()
$166
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 September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $302 (Trip.com) |
One-way from | $133 (Air Canada) |
Popular in | December |
Cheapest in | November |
Average price | $454 |
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 September 12, 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
Thu 10/15
7:45 pm-8:25 am
2 stops9h 40m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$159
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Wed 9/30
10:43 am-9:32 pm
1 stop7h 49m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$163
Quickest round-trip
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 10/2
2:27 pm-11:59 pm
1 stop6h 32m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Fri 9/25
2:27 pm-11:59 pm
1 stop6h 32m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Tue 9/22
10:50 am-9:32 pm
1 stop7h 42m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$164
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
Thu 10/8
11:12 pm-1:36 pm
1 stop11h 24m
Toronto Pearson Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$165
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
Tue 10/20
3:30 pm-7:10 am
2 stops12h 40m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$169
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
Wed 9/23
9:46 am-11:44 pm
2 stops10h 58m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$169
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
Tue 10/20
10:58 am-10:06 pm
1 stop8h 08m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$169
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
Mon 10/19
11:30 pm-10:40 am
1 stop8h 10m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$169
Showing 1-10 of 60 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-YOW
PDX-YTZ
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-YOW
PDX-YTZ
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 $365 and $579 in September.The cheapest round-trip price found within the last 5 days was $302 on WestJet (Sep 28-Oct 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 September 12, 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.
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Crew
8.5
Entertainment
7.8
Overall
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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
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 September 12, 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 September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$113 | Average$290 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$142 | Average$429 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$146 | Average$627 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$173 | Average$612 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$545 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$355 | Average$432 | FlexibilityNo cancel fee | On-time71% |