$119+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
set 6 — set 131
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 agosto 7, 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 agosto 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
2 stops11h 40m
sab 9/59:00 am -
1 stop7h 50m
Deal found 8/2![WestJet logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sab 9/52:30 pm -
2 stops11h 40m
ven 9/119:00 am -
1 stop7h 50m
Deal found 8/2![WestJet logo]()
$266
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
1 stop7h 35m
dom 9/68:00 am -
1 stop8h 50m
Deal found 8/3![WestJet logo]()
$270
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/57:45 pm -
1 stop7h 30m
ven 9/117:15 am -
1 stop9h 35m
Deal found 8/3![Multiple Airlines logo]()
$281
This Mytrip deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
2 stops11h 40m
sab 9/57:45 am -
2 stops10h 06m
Deal found 8/3![Multiple Airlines logo]()
$290
This Flightnetwork deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/53:30 pm -
2 stops12h 40m
ven 9/118:15 am -
2 stops13h 56m
Deal found 8/3![Air Canada logo]()
$313
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/52:30 pm -
1 stop23h 00m
ven 9/117:15 am -
1 stop9h 35m
Deal found 8/3![WestJet logo]()
$314
This Air Canada deal was found by Cheapflights users on 8/7. 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.
mar 12/110:00 am -
1 stop7h 33m
mar 12/88:45 am -
1 stop8h 56m
Deal found 8/7![Air Canada logo]()
$327
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 8/257:15 pm -
1 stop10h 01m
mer 8/2611:23 am -
1 stop13h 40m
Deal found 8/3![United Airlines logo]()
$329
This Air Canada deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 10/1010:10 am -
1 stop7h 41m
sab 10/177:30 am -
1 stop10h 21m
Deal found 8/3![Air Canada logo]()
$344
This United deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 10/137:29 pm -
1 stop9h 47m
sab 10/178:00 am -
2 stops9h 51m
Deal found 8/3![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
gio 9/177:35 pm -
1 stop8h 30m
gio 9/246:45 am -
2 stops15h 00m
Deal found 8/3![WestJet logo]()
$363
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 agosto 7, 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 agosto 7, 2026.
This Priceline deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sab 9/52:30 pm -
2 stops11h 40m
ven 9/116:10 am -
2 stops10h 40m
Deal found 8/2![WestJet logo]()
$308
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 11/1111:10 pm -
1 stop9h 05m
sab 11/146:30 am -
1 stop7h 06m
Deal found 8/7![Delta logo]()
$343
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
gio 9/245:00 am -
1 stop13h 32m
sab 9/2610:45 am -
2 stops10h 46m
Deal found 8/2![United Airlines logo]()
$365
This Booking.com deal was found by Cheapflights users on 8/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven 9/187:45 pm -
2 stops9h 00m
sab 9/2612:15 pm -
1 stop9h 38m
Deal found 8/7![Air Canada logo]()
$386
This United deal was found by Cheapflights users on 8/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 10/214:09 pm -
2 stops22h 21m
lun 10/268:30 am -
2 stops13h 01m
Deal found 8/7![Multiple Airlines logo]()
$432
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
mer 10/78:00 am -
Nonstop4h 45m
gio 10/154:55 pm -
Nonstop5h 31m
Deal found 8/6![Alaska Airlines logo]()
$524
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/16:00 am -
1 stop9h 34m
mar 9/812:15 pm -
1 stop11h 48m
Deal found 8/3![Delta logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
lun 9/1411:02 pm -
1 stop7h 52m
sab 9/197:00 am -
2 stops11h 05m
Deal found 8/3![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
mar 8/1811:45 am -
1 stop9h 12m
mar 8/256:10 am -
1 stop7h 16m
Deal found 8/4![Delta logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
dom 9/67:00 am -
1 stop7h 15m
mar 9/151:20 pm -
1 stop8h 25m
Deal found 8/7![WestJet logo]()
$385
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
mar 8/257:15 pm -
1 stop10h 01m
mer 8/2611:23 am -
1 stop13h 40m
Deal found 8/4![United Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/812:25 am -
1 stop8h 10m
lun 9/1412:25 pm -
1 stop10h 51m
Deal found 8/7![Delta logo]()
$354
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
ven 9/2510:30 am -
2 stops10h 55m
lun 9/288:00 pm -
1 stop16h 40m
Deal found 8/2![WestJet logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
ven 10/97:35 pm -
1 stop7h 00m
lun 10/1212:25 pm -
2 stops24h 35m
Deal found 8/4![Multiple Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
mer 9/97:02 am -
1 stop9h 38m
sab 9/195:16 pm -
1 stop8h 29m
Deal found 8/6![United Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
ven 9/46:00 am -
1 stop9h 34m
ven 9/111:34 pm -
1 stop11h 13m
Deal found 8/6![Delta logo]()
$365
This Mytrip deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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.
ven 9/187:35 pm -
1 stop16h 25m
ven 9/256:05 am -
2 stops19h 42m
Deal found 8/5![Multiple Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
mer 9/232:27 pm -
1 stop6h 32m
mar 9/292:30 pm -
1 stop8h 40m
Deal found 8/6![United Airlines logo]()
$386
This Air Canada deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
sab 10/245:40 am -
1 stop7h 43m
sab 10/312:00 pm -
1 stop9h 59m
Deal found 8/4![Air Canada logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
ven 10/97:35 pm -
1 stop7h 00m
lun 10/121:20 pm -
1 stop8h 25m
Deal found 8/4![WestJet logo]()
$440
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun 8/3111:45 am -
1 stop9h 07m
ven 9/412:47 pm -
1 stop12h 22m
Deal found 8/7![Delta logo]()
$376
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 10/108:00 am -
Nonstop4h 45m
lun 10/124:55 pm -
Nonstop5h 31m
Deal found 8/3![Alaska Airlines logo]()
$557
This Mytrip deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
ven 9/1810:30 am -
2 stops8h 39m
ven 9/257:00 am -
2 stops29h 40m
Deal found 8/3![Multiple Airlines logo]()
$463
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” 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.
sab 10/1710:58 am -
1 stop8h 08m
sab 10/249:45 am -
1 stop9h 11m
Deal found 8/6![United Airlines logo]()
$400
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/87:00 am -
1 stop9h 50m
sab 9/128:40 pm -
1 stop16h 00m
Deal found 8/3![WestJet logo]()
$458
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
gio 12/39:45 pm -
2 stops15h 13m
mer 12/94:50 pm -
1 stop8h 12m
Deal found 8/7![Delta logo]()
$380
This United deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
lun 11/27:00 am -
1 stop11h 17m
ven 11/68:30 am -
2 stops12h 52m
Deal found 8/2![Multiple Airlines logo]()
$483
This oojo deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
ven 9/47:00 am -
1 stop7h 15m
lun 9/77:20 am -
1 stop29h 20m
Deal found 8/3![WestJet logo]()
$459
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
lun 8/177:00 am -
1 stop13h 18m
lun 8/245:50 pm -
1 stop8h 49m
Deal found 8/4![Delta logo]()
$381
This United Airlines deal was found by Cheapflights users on 8/7. 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.
mer 9/28:25 am -
1 stop8h 20m
ven 9/43:25 pm -
1 stop9h 38m
Deal found 8/7![United Airlines logo]()
$421
Last-minute flights from Washington to OntarioDiscover last-minute flight deals from Washington to Ontario. Data last updated agosto 7, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Ontario. Data last updated agosto 7, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 8/257:15 pm -
1 stop10h 01m
mer 8/2611:23 am -
1 stop13h 40m
Deal found 8/3![United Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
2 stops11h 40m
sab 9/59:00 am -
1 stop7h 50m
Deal found 8/2![WestJet logo]()
$263
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
1 stop7h 35m
dom 9/68:00 am -
1 stop8h 50m
Deal found 8/3![WestJet logo]()
$270
This Mytrip deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
2 stops11h 40m
sab 9/57:45 am -
2 stops10h 06m
Deal found 8/3![Multiple Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/112:50 pm -
1 stop20h 37m
mar 9/85:34 pm -
1 stop9h 25m
Deal found 8/3![American Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
mer 9/22:30 pm -
1 stop30h 15m
gio 9/106:45 am -
2 stops34h 05m
Deal found 8/4![WestJet logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sab 9/52:30 pm -
2 stops11h 40m
ven 9/119:00 am -
1 stop7h 50m
Deal found 8/2![WestJet logo]()
$266
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/57:45 pm -
1 stop7h 30m
ven 9/117:15 am -
1 stop9h 35m
Deal found 8/3![Multiple Airlines logo]()
$281
This Flightnetwork deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/53:30 pm -
2 stops12h 40m
ven 9/118:15 am -
2 stops13h 56m
Deal found 8/3![Air Canada logo]()
$313
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
sab 9/52:30 pm -
1 stop23h 00m
ven 9/117:15 am -
1 stop9h 35m
Deal found 8/3![WestJet logo]()
$314
This Air Canada deal was found by Cheapflights users on 8/7. 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.
dom 9/137:45 pm -
1 stop9h 20m
mar 9/157:30 am -
1 stop14h 41m
Deal found 8/7![Air Canada logo]()
$363
This Air Canada deal was found by Cheapflights users on 8/7. 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.
mar 9/1510:10 am -
1 stop11h 29m
mer 9/237:30 am -
1 stop10h 16m
Deal found 8/7![Air Canada logo]()
$346
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 agosto 7, 2026.
Search for one-way flight options from Washington to Ontario. Find affordable one-way fares based on user searches. Data last updated agosto 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
gio 8/272:30 pm -
2 stops11h 40m
Deal found 8/4![WestJet logo]()
$119
This Air Canada deal was found by Cheapflights users on 8/7. 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.
mer 10/73:30 pm -
1 stop7h 05m
Deal found 8/7![Air Canada logo]()
$132
This Delta deal was found by Cheapflights users on 8/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar 9/16:00 am -
1 stop9h 34m
Deal found 8/7![Delta logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
mer 9/22:30 pm -
1 stop7h 35m
Deal found 8/4![WestJet logo]()
$144
This Air Canada deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/13:30 pm -
2 stops11h 14m
Deal found 8/3![Air Canada logo]()
$146
This Air Canada deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
sab 9/510:10 am -
1 stop7h 44m
Deal found 8/4![Air Canada logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
sab 8/292:30 pm -
2 stops19h 15m
Deal found 8/4![WestJet logo]()
$147
This American Airlines deal was found by Cheapflights users on 8/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer 10/76:01 am -
2 stops9h 44m
Deal found 8/7![American Airlines logo]()
$148
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/298:40 am -
2 stops12h 19m
Deal found 8/3![United Airlines logo]()
$150
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
mar 9/17:02 am -
1 stop7h 28m
Deal found 8/3![United Airlines logo]()
$150
This Air Canada deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
ven 11/137:10 pm -
1 stop8h 52m
Deal found 8/3![Air Canada logo]()
$152
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
gio 10/111:59 pm -
1 stop11h 25m
Deal found 8/3![United Airlines logo]()
$157
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 agosto 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $263 (Kiwi.com) |
One-way from | $119 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $546 |
Good round-trip deal | $496 or less |
Good one-way deal | $293 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 agosto 7, 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 Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
sab 9/5
2:30 pm-5:10 am
2 stops11h 40m
Toronto Pearson Intl
ven 9/11
6:10 am-1:50 pm
2 stops10h 40m
$308
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
mer 11/11
11:10 pm-11:15 am
1 stop9h 05m
Toronto Pearson Intl
sab 11/14
6:30 am-10:36 am
1 stop7h 06m
$343
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
mar 9/1
6:00 am-6:34 pm
1 stop9h 34m
Toronto Pearson Intl
mar 9/8
12:15 pm-9:03 pm
1 stop11h 48m
$347
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
mar 8/18
11:45 am-11:57 pm
1 stop9h 12m
Toronto Pearson Intl
mar 8/25
6:10 am-10:26 am
1 stop7h 16m
$347
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
mar 9/8
12:25 am-11:35 am
1 stop8h 10m
Toronto Pearson Intl
lun 9/14
12:25 pm-8:16 pm
1 stop10h 51m
$354
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
gio 9/24
5:00 am-9:32 pm
1 stop13h 32m
Toronto Pearson Intl
sab 9/26
10:45 am-6:31 pm
2 stops10h 46m
$365
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
ven 9/4
6:00 am-6:34 pm
1 stop9h 34m
Toronto Pearson Intl
ven 9/11
1:34 pm-9:47 pm
1 stop11h 13m
$365
PortlandToronto
PDX Portland - YYZ Toronto Pearson Intl
PDXYYZ
Portland
lun 9/14
11:02 pm-9:54 am
1 stop7h 52m
Toronto Pearson Intl
sab 9/19
7:00 am-3:05 pm
2 stops11h 05m
$369
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
mar 8/25
7:15 pm-8:16 am
1 stop10h 01m
Montreal Pierre Elliott Trudeau Intl
mer 8/26
11:23 am-10:03 pm
1 stop13h 40m
$370
PortlandMontreal
PDX Portland - YUL Montreal Pierre Elliott Trudeau Intl
PDXYUL
Portland
lun 8/31
11:45 am-11:52 pm
1 stop9h 07m
Montreal Pierre Elliott Trudeau Intl
ven 9/4
12:47 pm-10:09 pm
1 stop12h 22m
$376
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
PDX-YUL
SEA-YUL
SEA-YOW
SEA-YYZ
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
PDX-YUL
SEA-YUL
SEA-YOW
What is the cheapest month to book a flight from State of Washington to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Region of Ontario (average of $278). Flying from State of Washington to Region of Ontario in July is currently the most expensive (average of $588). 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 agosto 7, 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 agosto 7, 2026.
The most flights from USWA to CAON are scheduled on a Wednesday (5 on average). You will have fewer flight options on Saturday, 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?
Airfare is below average for this route at the moment.
State of Washington to Region of Ontario flights typically cost between $385 and $812 in September.The cheapest round-trip price found within the last 5 days was $375 on WestJet (Sep 23-Sep 30).
How far ahead should I book a flight from State of Washington to Region of Ontario?
Booking 59 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 agosto 7, 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
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Overall
7.9
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Overall
7.9
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Overall
7.9
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Overall
7.9
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Overall
7.9
Entertainment
7.0
Comfort
7.8
Food
7.0
Crew
8.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
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 agosto 7, 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 agosto 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$132 | Average$505 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$142 | Average$413 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$394 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$250 | Average$469 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$277 | Average$545 | FlexibilityNo cancel fee | On-time69% |