$139+ Cheap flights from Washington 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Jul 14 — Jul 211
Round-trip
1 adult, Economy
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Cheapest flights from Washington to OntarioExplore the most affordable flight options available from Washington to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.
Explore the most affordable flight options available from Washington to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 9/29:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/11![WestJet logo]()
$301
This Vliegwinkel deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
1 stop9h 35m
Multiple Airlines
Wed 7/297:00 am
YYZ
- PDX
1 stop9h 50m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 7/299:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/11![WestJet logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Fri 9/49:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/11![WestJet logo]()
$308
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
2 stops9h 40m
Multiple Airlines
Tue 7/289:00 am
YYZ
- PDX
1 stop7h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Wed 8/59:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/10![WestJet logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Mon 8/317:00 am
YYZ
- PDX
1 stop9h 50m
WestJet
Deal found 6/11![WestJet logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/212:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 8/59:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/10![WestJet logo]()
$319
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Tue 7/288:00 am
YYZ
- PDX
1 stop8h 50m
WestJet
Deal found 6/9![WestJet logo]()
$322
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Mon 8/317:00 am
YYZ
- PDX
1 stop9h 50m
WestJet
Deal found 6/10![WestJet logo]()
$326
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 7/157:00 am
YYZ
- PDX
1 stop9h 50m
WestJet
Deal found 6/10![WestJet logo]()
$329
This Flightnetwork deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
2 stops9h 40m
Air Canada
Wed 7/297:45 am
YYZ
- PDX
2 stops14h 26m
Air Canada
Deal found 6/14![Air Canada logo]()
$330
Best flights from Washington to OntarioDiscover carefully curated flight deals from Washington to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
Discover carefully curated flight deals from Washington to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
This United deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:43 pm
PDX
- YYZ
2 stops20h 33m
Multiple Airlines
Tue 8/187:30 am
YYZ
- PDX
1 stop10h 21m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$381
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:00 am
PDX
- YYZ
1 stop7h 41m
Delta
Sat 11/145:50 pm
YYZ
- PDX
1 stop9h 01m
Delta
Deal found 6/10![Delta logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:40 am
PDX
- YYZ
1 stop9h 52m
United Airlines
Fri 9/185:27 pm
YYZ
- PDX
1 stop8h 25m
United Airlines
Deal found 6/13![United Airlines logo]()
$382
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 am
SEA
- YKF
1 stop9h 50m
WestJet
Sun 7/268:40 pm
YKF
- SEA
1 stop16h 00m
WestJet
Deal found 6/11![WestJet logo]()
$425
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 pm
SEA
- YUL
2 stops9h 05m
Air Canada
Sun 11/223:10 pm
YUL
- SEA
1 stop8h 44m
Air Canada
Deal found 6/12![Air Canada logo]()
$476
This Alaska Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:52 am
SEA
- YYZ
Nonstop4h 53m
Alaska Airlines
Sat 9/264:55 pm
YYZ
- SEA
Nonstop5h 18m
Alaska Airlines
Deal found 6/11![Alaska Airlines logo]()
$482
This Sun Country Air deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:59 pm
SEA
- YYZ
1 stop7h 42m
Sun Country Air
Sun 6/285:55 pm
YYZ
- SEA
1 stop17h 05m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$666
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:17 pm
PDX
- YYZ
1 stop16h 43m
United Airlines
Sun 9/207:00 pm
YYZ
- PDX
1 stop17h 50m
United Airlines
Deal found 6/12![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:45 am
PDX
- YYZ
1 stop12h 14m
Delta
Thu 8/136:15 am
YYZ
- PDX
1 stop10h 23m
Delta
Deal found 6/13![Delta logo]()
$382
This United deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:00 am
PDX
- YYZ
1 stop13h 32m
Multiple Airlines
Sat 9/197:55 am
YYZ
- PDX
2 stops14h 11m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$396
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:02 pm
PDX
- YYZ
1 stop9h 47m
United Airlines
Mon 9/142:30 pm
YYZ
- PDX
1 stop8h 40m
United Airlines
Deal found 6/14![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
PDX
- YYZ
1 stop9h 34m
Delta
Fri 8/284:10 pm
YYZ
- PDX
1 stop8h 59m
Delta
Deal found 6/11![Delta logo]()
$382
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:00 am
SEA
- YKF
1 stop9h 50m
WestJet
Fri 7/38:40 pm
YKF
- SEA
1 stop16h 00m
WestJet
Deal found 6/10![WestJet logo]()
$434
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:02 pm
PDX
- YYZ
1 stop15h 54m
United Airlines
Mon 8/311:00 pm
YYZ
- PDX
1 stop12h 52m
United Airlines
Deal found 6/11![United Airlines logo]()
$382
This United deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am
SEA
- YYZ
1 stop7h 14m
Multiple Airlines
Thu 9/176:10 pm
YYZ
- SEA
1 stop7h 32m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$440
This Trip.com deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
SEA
- YOW
1 stop9h 20m
WestJet
Sat 8/221:20 pm
YOW
- SEA
1 stop8h 25m
WestJet
Deal found 6/13![WestJet logo]()
$446
This Air Canada deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:30 pm
PDX
- YUL
2 stops12h 40m
Air Canada
Sat 8/89:20 pm
YUL
- PDX
2 stops20h 31m
Air Canada
Deal found 6/14![Air Canada logo]()
$505
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2911:40 pm
PDX
- YYZ
1 stop9h 09m
United Airlines
Mon 7/138:00 pm
YYZ
- PDX
1 stop16h 25m
United Airlines
Deal found 6/14![United Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:30 am
SEA
- YUL
1 stop10h 15m
WestJet
Tue 8/118:00 pm
YUL
- SEA
1 stop16h 40m
WestJet
Deal found 6/9![WestJet logo]()
$449
This United deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:00 am
SEA
- YUL
1 stop7h 30m
Multiple Airlines
Wed 9/239:30 pm
YUL
- SEA
1 stop15h 22m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$456
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:40 am
SEA
- YUL
1 stop12h 15m
Delta
Sun 7/57:00 am
YUL
- SEA
1 stop12h 49m
Delta
Deal found 6/10![Delta logo]()
$486
This Air Canada deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:45 pm
PDX
- YOW
1 stop7h 09m
Air Canada
Tue 7/286:05 pm
YOW
- PDX
1 stop18h 26m
Air Canada
Deal found 6/14![Air Canada logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:35 pm
SEA
- YOW
1 stop7h 00m
WestJet
Mon 9/71:20 pm
YOW
- SEA
1 stop8h 25m
WestJet
Deal found 6/10![WestJet logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:30 am
SEA
- YOW
2 stops30h 17m
Multiple Airlines
Thu 7/231:20 pm
YOW
- SEA
1 stop8h 25m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$473
This Alaska Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:00 am
SEA
- YYZ
Nonstop4h 45m
Alaska Airlines
Fri 7/104:55 pm
YYZ
- SEA
Nonstop5h 30m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:40 pm
PDX
- YUL
1 stop15h 50m
United Airlines
Wed 7/156:35 pm
YUL
- PDX
1 stop9h 15m
United Airlines
Deal found 6/14![United Airlines logo]()
$448
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
SEA
- YYZ
1 stop12h 59m
Delta
Fri 8/145:50 pm
YYZ
- SEA
1 stop9h 09m
Delta
Deal found 6/13![Delta logo]()
$496
This Vliegwinkel deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:00 am
SEA
- YHM
1 stop7h 15m
WestJet
Fri 7/106:10 pm
YHM
- SEA
1 stop27h 35m
WestJet
Deal found 6/13![WestJet logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 am
SEA
- YOW
2 stops30h 17m
Multiple Airlines
Fri 8/281:20 pm
YOW
- SEA
1 stop8h 25m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$476
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2011:40 pm
PDX
- YTZ
1 stop7h 27m
United Airlines
Tue 7/2812:15 pm
YTZ
- PDX
1 stop9h 32m
United Airlines
Deal found 6/11![United Airlines logo]()
$452
Last-minute flights from Washington to OntarioDiscover last-minute flight deals from Washington to Ontario. Data last updated June 14, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Ontario. Data last updated June 14, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:00 am
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/9![WestJet logo]()
$370
This Trip.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 7/157:00 am
YYZ
- PDX
1 stop9h 50m
WestJet
Deal found 6/10![WestJet logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:00 am
SEA
- YYZ
2 stops9h 00m
WestJet
Thu 7/162:50 pm
YYZ
- SEA
1 stop9h 10m
WestJet
Deal found 6/12![WestJet logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:35 pm
SEA
- YYZ
1 stop7h 10m
WestJet
Tue 7/141:30 pm
YYZ
- SEA
1 stop8h 15m
WestJet
Deal found 6/11![WestJet logo]()
$374
This Vliegwinkel deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
1 stop9h 35m
Multiple Airlines
Wed 7/297:00 am
YYZ
- PDX
1 stop9h 50m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$304
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
2 stops9h 40m
Multiple Airlines
Tue 7/289:00 am
YYZ
- PDX
1 stop7h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$309
This Flightnetwork deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:45 pm
PDX
- YYZ
2 stops9h 40m
Air Canada
Wed 7/297:45 am
YYZ
- PDX
2 stops14h 26m
Air Canada
Deal found 6/14![Air Canada logo]()
$330
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/212:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 8/59:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/10![WestJet logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Wed 7/299:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/11![WestJet logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Wed 8/59:00 am
YYZ
- PDX
1 stop7h 50m
WestJet
Deal found 6/10![WestJet logo]()
$312
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/222:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Tue 7/288:00 am
YYZ
- PDX
1 stop8h 50m
WestJet
Deal found 6/9![WestJet logo]()
$322
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:30 am
SEA
- YYZ
2 stops10h 29m
WestJet
Sun 8/212:00 pm
YYZ
- SEA
2 stops12h 00m
WestJet
Deal found 6/11![WestJet logo]()
$368
One-way flights from Washington to OntarioSearch for one-way flight options from Washington to Ontario. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
Search for one-way flight options from Washington to Ontario. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Deal found 6/12![WestJet logo]()
$139
This Justfly.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Deal found 6/10![WestJet logo]()
$140
This Mytrip deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:10 am
PDX
- YYZ
2 stops10h 36m
Air Canada
Deal found 6/14![Air Canada logo]()
$143
This Booking.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/302:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Deal found 6/9![WestJet logo]()
$145
This Booking.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:30 pm
PDX
- YYZ
2 stops11h 40m
WestJet
Deal found 6/10![WestJet logo]()
$148
This Justfly.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/292:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Deal found 6/11![WestJet logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:30 pm
PDX
- YYZ
1 stop7h 35m
WestJet
Deal found 6/11![WestJet logo]()
$152
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:30 pm
PDX
- YYZ
2 stops12h 12m
Air Canada
Deal found 6/10![Air Canada logo]()
$161
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:15 pm
PDX
- YYZ
1 stop8h 45m
United Airlines
Deal found 6/12![United Airlines logo]()
$162
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2511:15 pm
PDX
- YYZ
1 stop11h 19m
Delta
Deal found 6/10![Delta logo]()
$164
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/125:15 am
PDX
- YYZ
1 stop7h 55m
United Airlines
Deal found 6/9![United Airlines logo]()
$165
This deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm
SEA
- YYZ
1 stop8h 20m
WestJet
Deal found 6/14![WestJet logo]()
$168
Find flight deals from Washington to Ontario
Keep the following information in mind while searching for Washington to Ontario flight deals. Data was last updated June 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $301 (Kiwi.com) |
One-way from | $139 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $502 |
Good round-trip deal | $566 or less |
Good one-way deal | $410 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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 June 14, 2026.
Use the filters below to find and compare flights from Washington to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Fri 8/14
3:43 pm-3:16 pm
2 stops20h 33m
Toronto Pearson Intl
Tue 8/18
7:30 am-2:51 pm
1 stop10h 21m
$381
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Wed 11/11
6:00 am-4:41 pm
1 stop7h 41m
Toronto Pearson Intl
Sat 11/14
5:50 pm-11:51 pm
1 stop9h 01m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Sat 9/12
8:40 am-9:32 pm
1 stop9h 52m
Toronto Pearson Intl
Fri 9/18
5:27 pm-10:52 pm
1 stop8h 25m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Thu 9/17
11:17 pm-7:00 pm
1 stop16h 43m
Toronto Pearson Intl
Sun 9/20
7:00 pm-9:50 am
1 stop17h 50m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Fri 8/7
6:45 am-9:59 pm
1 stop12h 14m
Toronto Pearson Intl
Thu 8/13
6:15 am-1:38 pm
1 stop10h 23m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Wed 9/9
11:02 pm-11:49 am
1 stop9h 47m
Toronto Pearson Intl
Mon 9/14
2:30 pm-8:10 pm
1 stop8h 40m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Mon 8/24
6:00 am-6:34 pm
1 stop9h 34m
Toronto Pearson Intl
Fri 8/28
4:10 pm-10:09 pm
1 stop8h 59m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Thu 8/20
11:02 pm-5:56 pm
1 stop15h 54m
Toronto Pearson Intl
Mon 8/31
1:00 pm-10:52 pm
1 stop12h 52m
$382
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Mon 6/29
11:40 pm-11:49 am
1 stop9h 09m
Toronto Pearson Intl
Mon 7/13
8:00 pm-9:25 am
1 stop16h 25m
$384
PortlandToronto
PDX - YYZ
PDXYYZ
Portland
Sun 9/13
5:00 am-9:32 pm
1 stop13h 32m
Toronto Pearson Intl
Sat 9/19
7:55 am-7:06 pm
2 stops14h 11m
$396
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Washington with our price prediction graph.
PDX-YYZ
SEA-YKF
SEA-YUL
SEA-YYZ
SEA-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 Washington to Ontario
USWA-CAON
PDX-YYZ
SEA-YKF
SEA-YUL
SEA-YYZ
What is the cheapest month to book a flight from State of Washington to Region of Ontario?
Currently, November is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of $88). Flying from State of Washington to Region of Ontario in August is currently the most expensive (average of $165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from WA to ON?
Find hourly flight availability from Washington to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 14, 2026.
When flying from State of Washington to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from State of Washington to Region of Ontario
Explore weekly flight availability from Washington to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 14, 2026.
The most flights from USWA to CAON are scheduled on a Wednesday (5 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from State of Washington to Region of Ontario?
How far ahead should I book a flight from State of Washington to Region of Ontario?
Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from State of Washington 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 June 14, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Washington to Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Overall
7.9
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Crew
8.5
Food
7.0
Reviews
1 / 20
4.0
OkayAnonymous,Jun 2026
SEA - RNO
Related info for your journey
Find useful and relevant information for your journey from Washington 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 Washington 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 Washington to Ontario by cabin class
Find flights from Washington to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Ontario flights
Browse other Washington and Ontario flight options. Last updated on June 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Ontario
Find the right flight back to Washington after your stay in Ontario
Washington to Ontario flights
Consider these flights traveling from Washington to Ontario.
Top 5 airlines flying from Washington to Ontario
Discover the top 5 airlines that operate flights from Washington 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 June 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$486 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$142 | Average$415 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$167 | Average$525 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$226 | Average$352 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$449 | FlexibilityNo cancel fee | On-time75% |