$216+ Cheap flights from Oakland, CA (OAK) to Ontario
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Oakland 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 Oakland to OntarioExplore the most affordable flight options available from Oakland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Oakland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/286:51 pm -
1 stop8h 48m
Wed 9/3012:00 pm -
2 stops13h 54m
Deal found 8/19![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/912:47 pm -
2 stops33h 18m
Sun 9/138:35 pm -
1 stop15h 47m
Deal found 8/18![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Sat 10/312:47 pm -
1 stop8h 12m
Tue 10/610:50 am -
2 stops28h 01m
Deal found 8/20![Multiple Airlines logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/26:51 pm -
1 stop22h 18m
Mon 10/58:35 pm -
1 stop18h 16m
Deal found 8/18![Multiple Airlines logo]()
$493
This Kiwi.com deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/110:23 pm -
1 stop20h 27m
Sat 12/51:30 pm -
1 stop10h 58m
Deal found 8/17![Multiple Airlines logo]()
$504
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/110:17 am -
2 stops16h 28m
Mon 10/58:35 pm -
1 stop18h 16m
Deal found 8/18![Multiple Airlines logo]()
$507
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/1010:17 am -
2 stops11h 48m
Sun 9/138:35 pm -
1 stop15h 47m
Deal found 8/20![Multiple Airlines logo]()
$526
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/612:47 pm -
1 stop28h 22m
Tue 10/1310:50 am -
2 stops28h 02m
Deal found 8/21![Multiple Airlines logo]()
$533
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/2312:47 pm -
2 stops13h 23m
Mon 9/288:35 pm -
1 stop18h 16m
Deal found 8/20![Multiple Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/2510:17 am -
2 stops15h 53m
Mon 9/288:35 pm -
1 stop18h 16m
Deal found 8/20![Multiple Airlines logo]()
$550
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 11/215:00 pm -
2 stops27h 30m
Fri 11/277:00 am -
2 stops18h 02m
Deal found 8/17![Delta logo]()
$715
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Sat 9/1911:30 pm -
1 stop29h 00m
Sat 9/267:15 am -
2 stops15h 37m
Deal found 8/20![Multiple Airlines logo]()
$720
Best flights from Oakland to OntarioDiscover carefully curated flight deals from Oakland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Oakland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/156:00 am -
1 stop7h 44m
Tue 9/225:54 pm -
1 stop9h 05m
Deal found 8/19![Delta logo]()
$628
This Alaska Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/247:10 pm -
2 stops17h 55m
Thu 10/295:15 pm -
1 stop8h 40m
Deal found 8/17![Alaska Airlines logo]()
$631
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/2911:30 pm -
1 stop29h 00m
Tue 10/67:15 am -
2 stops18h 40m
Deal found 8/18![Multiple Airlines logo]()
$789
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:00 am -
2 stops13h 59m
Thu 9/245:54 pm -
1 stop9h 05m
Deal found 8/19![Delta logo]()
$637
This Alaska Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Fri 10/237:53 pm -
1 stop16h 52m
Tue 10/275:15 pm -
1 stop8h 40m
Deal found 8/17![Alaska Airlines logo]()
$657
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/205:02 pm -
2 stops14h 21m
Tue 10/2712:49 pm -
2 stops14h 07m
Deal found 8/17![Delta logo]()
$642
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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.
Fri 10/237:53 pm -
1 stop16h 52m
Thu 10/295:15 pm -
1 stop8h 40m
Deal found 8/19![Alaska Airlines logo]()
$658
This Gotogate deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:51 pm -
2 stops15h 34m
Wed 9/3010:10 am -
2 stops14h 18m
Deal found 8/20![Multiple Airlines logo]()
$820
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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.
Fri 2/127:13 pm -
2 stops17h 52m
Mon 2/225:15 pm -
2 stops29h 04m
Deal found 8/19![Alaska Airlines logo]()
$701
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/256:00 am -
2 stops14h 59m
Tue 9/294:05 pm -
2 stops10h 54m
Deal found 8/19![Delta logo]()
$711
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:30 pm -
1 stop29h 00m
Mon 10/55:00 pm -
2 stops21h 51m
Deal found 8/22![Multiple Airlines logo]()
$848
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 11/215:00 pm -
2 stops27h 30m
Fri 11/277:00 am -
2 stops18h 02m
Deal found 8/17![Delta logo]()
$715
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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.
Mon 9/287:51 pm -
2 stops12h 08m
Wed 9/303:13 pm -
2 stops21h 14m
Deal found 8/19![Alaska Airlines logo]()
$739
This Gotogate deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:51 pm -
2 stops15h 34m
Tue 9/2910:10 am -
2 stops14h 18m
Deal found 8/18![Multiple Airlines logo]()
$877
This Alaska Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Mon 10/127:53 pm -
1 stop16h 52m
Mon 10/194:55 pm -
1 stop21h 30m
Deal found 8/20![Alaska Airlines logo]()
$748
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/15:00 pm -
2 stops27h 52m
Mon 9/712:47 pm -
2 stops26h 12m
Deal found 8/18![Delta logo]()
$778
This Gotogate deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:51 pm -
2 stops15h 34m
Mon 9/2810:10 am -
2 stops16h 00m
Deal found 8/18![Multiple Airlines logo]()
$900
This Alaska Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Fri 10/237:53 pm -
1 stop16h 52m
Sun 10/255:15 pm -
1 stop8h 40m
Deal found 8/17![Alaska Airlines logo]()
$766
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am -
2 stops28h 41m
Tue 9/85:10 pm -
2 stops9h 49m
Deal found 8/18![Delta logo]()
$838
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:15 pm -
3 stops29h 15m
Sat 10/37:05 am -
2 stops17h 39m
Deal found 8/18![Multiple Airlines logo]()
$959
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/312:33 pm -
2 stops32h 19m
Tue 9/87:00 am -
2 stops31h 59m
Deal found 8/17![Delta logo]()
$841
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:00 am -
2 stops28h 36m
Fri 9/1112:48 pm -
2 stops26h 11m
Deal found 8/19![Delta logo]()
$877
This Mytrip deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Thu 10/111:59 pm -
3 stops26h 36m
Thu 10/81:20 pm -
3 stops32h 14m
Deal found 8/17![Multiple Airlines logo]()
$1,129
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:00 am -
2 stops28h 38m
Fri 11/277:00 am -
2 stops18h 02m
Deal found 8/17![Delta logo]()
$878
This Mytrip deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:11 pm -
2 stops24h 47m
Tue 9/82:00 pm -
2 stops26h 19m
Deal found 8/17![Multiple Airlines logo]()
$1,163
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:37 pm -
2 stops20h 02m
Fri 11/277:00 am -
2 stops18h 02m
Deal found 8/17![Delta logo]()
$886
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/312:33 pm -
2 stops32h 19m
Mon 9/712:47 pm -
2 stops26h 12m
Deal found 8/17![Delta logo]()
$936
This Expedia deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/312:22 pm -
2 stops14h 13m
Sat 10/101:20 pm -
2 stops12h 35m
Deal found 8/19![Multiple Airlines logo]()
$1,365
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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.
Thu 9/311:30 pm -
2 stops22h 20m
Mon 9/77:00 am -
3 stops17h 44m
Deal found 8/18![Multiple Airlines logo]()
$1,444
This Gotogate deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:11 pm -
2 stops13h 59m
Mon 9/147:25 am -
2 stops14h 30m
Deal found 8/18![Multiple Airlines logo]()
$1,532
Last-minute flights from Oakland to OntarioDiscover last-minute flight deals from Oakland to Ontario. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Oakland to Ontario. Data last updated August 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/15:00 pm -
2 stops20h 20m
Tue 9/87:00 am -
2 stops19h 59m
Deal found 8/18![Delta logo]()
$730
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/15:00 pm -
2 stops27h 52m
Mon 9/712:47 pm -
2 stops26h 12m
Deal found 8/18![Delta logo]()
$778
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/912:47 pm -
2 stops33h 18m
Sun 9/138:35 pm -
1 stop15h 47m
Deal found 8/18![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/1010:17 am -
2 stops11h 48m
Sun 9/138:35 pm -
1 stop15h 47m
Deal found 8/20![Multiple Airlines logo]()
$526
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/1611:30 pm -
1 stop29h 00m
Tue 9/228:00 pm -
2 stops25h 12m
Deal found 8/18![Multiple Airlines logo]()
$775
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Sat 9/1911:30 pm -
1 stop29h 00m
Sat 9/267:15 am -
2 stops15h 37m
Deal found 8/20![Multiple Airlines logo]()
$720
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/2312:47 pm -
2 stops13h 23m
Mon 9/288:35 pm -
1 stop18h 16m
Deal found 8/20![Multiple Airlines logo]()
$538
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/2510:17 am -
2 stops15h 53m
Mon 9/288:35 pm -
1 stop18h 16m
Deal found 8/20![Multiple Airlines logo]()
$550
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/286:51 pm -
1 stop8h 48m
Wed 9/3012:00 pm -
2 stops13h 54m
Deal found 8/19![Multiple Airlines logo]()
$470
This Gotogate deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:51 pm -
2 stops15h 34m
Wed 9/3010:10 am -
2 stops14h 18m
Deal found 8/19![Multiple Airlines logo]()
$748
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/2912:47 pm -
2 stops15h 08m
Thu 10/14:55 pm -
1 stop8h 59m
Deal found 8/19![Multiple Airlines logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/2911:30 pm -
1 stop29h 00m
Mon 10/55:00 pm -
2 stops21h 51m
Deal found 8/18![Multiple Airlines logo]()
$777
One-way flights from Oakland to OntarioSearch for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 10/2712:48 pm -
3 stops38h 12m
Deal found 8/19![Multiple Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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.
Sat 10/312:47 pm -
1 stop8h 12m
Deal found 8/18![Multiple Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/26:51 pm -
1 stop26h 08m
Deal found 8/18![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/46:51 pm -
3 stops31h 54m
Deal found 8/18![Multiple Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 10/2712:48 pm -
3 stops46h 37m
Deal found 8/19![Multiple Airlines logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 10/107:53 pm -
1 stop16h 52m
Deal found 8/19![Alaska Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:00 pm -
2 stops27h 44m
Deal found 8/20![Delta logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/46:51 pm -
3 stops19h 29m
Deal found 8/18![Multiple Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 10/26:51 pm -
3 stops39h 04m
Deal found 8/18![Multiple Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/2612:39 pm -
2 stops32h 05m
Deal found 8/20![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/85:00 pm -
2 stops27h 44m
Deal found 8/18![Delta logo]()
$348
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 10/26:00 am -
2 stops28h 36m
Deal found 8/20![Delta logo]()
$358
Find flight deals from Oakland to Ontario
Keep the following information in mind while searching for Oakland to Ontario flight deals. Data was last updated August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $470 (Kiwi.com) |
One-way from | $216 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $599 |
Cheapflights Fare Finder
Customize your flight search to find flights from Oakland 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 August 22, 2026.
Use the filters below to find and compare flights from Oakland to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Tue 9/15
6:00 am-4:44 pm
1 stop7h 44m
Toronto Pearson Intl
Tue 9/22
5:54 pm-11:59 pm
1 stop9h 05m
$628
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Sat 10/24
7:10 pm-4:05 pm
2 stops17h 55m
Toronto Pearson Intl
Thu 10/29
5:15 pm-10:55 pm
1 stop8h 40m
$631
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Sun 9/20
6:00 am-10:59 pm
2 stops13h 59m
Toronto Pearson Intl
Thu 9/24
5:54 pm-11:59 pm
1 stop9h 05m
$637
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Tue 10/20
5:02 pm-10:23 am
2 stops14h 21m
Toronto Pearson Intl
Tue 10/27
12:49 pm-11:56 pm
2 stops14h 07m
$642
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Fri 10/23
7:53 pm-3:45 pm
1 stop16h 52m
Toronto Pearson Intl
Tue 10/27
5:15 pm-10:55 pm
1 stop8h 40m
$657
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Fri 10/23
7:53 pm-3:45 pm
1 stop16h 52m
Toronto Pearson Intl
Thu 10/29
5:15 pm-10:55 pm
1 stop8h 40m
$658
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Fri 2/12
7:13 pm-4:05 pm
2 stops17h 52m
Toronto Pearson Intl
Mon 2/22
5:15 pm-7:19 pm
2 stops29h 04m
$701
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Fri 9/25
6:00 am-11:59 pm
2 stops14h 59m
Toronto Pearson Intl
Tue 9/29
4:05 pm-11:59 pm
2 stops10h 54m
$711
OaklandMontreal
OAK Oakland - YUL Montreal Pierre Elliott Trudeau Intl
OAKYUL
Oakland
Sat 11/21
5:00 pm-11:30 pm
2 stops27h 30m
Montreal Pierre Elliott Trudeau Intl
Fri 11/27
7:00 am-10:02 pm
2 stops18h 02m
$715
OaklandToronto
OAK Oakland - YYZ Toronto Pearson Intl
OAKYYZ
Oakland
Mon 9/28
7:51 pm-10:59 am
2 stops12h 08m
Toronto Pearson Intl
Wed 9/30
3:13 pm-9:27 am
2 stops21h 14m
$739
Showing 1-10 of 59 resultsSorted by cheapest first
Best time to book a flight from Oakland to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Oakland with our price prediction graph.
OAK-YYZ
OAK-YUL
OAK-YTZ
OAK-YHM
OAK-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 Oakland to Ontario
OAK-CAON
OAK-YYZ
OAK-YUL
OAK-YTZ
OAK-YHM
No data available for this route at this time. Please check back soon.
Related info for your journey
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