$230+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Oakland to Ontario with Cheapflights
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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 April 23, 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 April 23, 2026.
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Wed 7/155:45 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 4/21![Delta logo]()
$518
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/12:58 pm
OAK
- YYZ
2 stops21h 47m
Alaska Airlines
Sat 6/64:55 pm
YYZ
- OAK
1 stop10h 04m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$527
This Delta deal was found by Cheapflights users on 4/19. 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 7/145:03 pm
OAK
- YYZ
2 stops12h 52m
Delta
Tue 7/2111:40 am
YYZ
- OAK
2 stops15h 11m
Delta
Deal found 4/19![Delta logo]()
$533
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/136:00 am
OAK
- YYZ
2 stops14h 58m
Delta
Fri 7/177:45 am
YYZ
- OAK
2 stops19h 06m
Delta
Deal found 4/23![Delta logo]()
$534
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 9/176:00 am
OAK
- YYZ
2 stops12h 15m
Multiple Airlines
Tue 9/294:55 pm
YYZ
- OAK
1 stop8h 59m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$539
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 8/111:15 pm
OAK
- YUL
2 stops31h 41m
Delta
Sat 8/297:00 am
YUL
- OAK
2 stops19h 49m
Delta
Deal found 4/23![Delta logo]()
$543
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:55 am
OAK
- YYZ
1 stop7h 44m
Delta
Tue 10/205:50 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 4/21![Delta logo]()
$546
This Delta deal was found by Cheapflights users on 4/20. 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.
Wed 9/165:55 am
OAK
- YYZ
1 stop7h 50m
Delta
Tue 9/225:50 pm
YYZ
- OAK
1 stop8h 59m
Delta
Deal found 4/20![Delta logo]()
$556
This Delta deal was found by Cheapflights users on 4/20. 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 5/305:55 pm
OAK
- YUL
2 stops26h 46m
Delta
Thu 6/46:00 am
YUL
- OAK
2 stops20h 57m
Delta
Deal found 4/20![Delta logo]()
$563
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/295:03 pm
OAK
- YYZ
2 stops12h 52m
Delta
Wed 7/155:45 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 4/21![Delta logo]()
$566
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/185:30 pm
OAK
- YYZ
2 stops15h 53m
Delta
Thu 7/237:45 am
YYZ
- OAK
2 stops19h 06m
Delta
Deal found 4/23![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 8/105:05 pm
OAK
- YUL
2 stops27h 51m
Delta
Sat 8/297:00 am
YUL
- OAK
2 stops19h 49m
Delta
Deal found 4/23![Delta logo]()
$594
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 April 23, 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 April 23, 2026.
This Delta deal was found by Cheapflights users on 4/19. 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 7/175:03 pm
OAK
- YYZ
2 stops15h 16m
Delta
Thu 7/237:45 am
YYZ
- OAK
2 stops19h 06m
Delta
Deal found 4/19![Delta logo]()
$533
This Alaska Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 9/232:14 pm
OAK
- YYZ
1 stop22h 31m
Alaska Airlines
Tue 10/64:55 pm
YYZ
- OAK
2 stops18h 53m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$606
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Sat 6/62:58 pm
OAK
- YUL
2 stops24h 17m
Multiple Airlines
Sat 6/1311:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$812
This Delta deal was found by Cheapflights users on 4/20. 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.
Sun 7/266:00 am
OAK
- YYZ
2 stops14h 14m
Delta
Fri 7/3112:09 pm
YYZ
- OAK
2 stops14h 42m
Delta
Deal found 4/20![Delta logo]()
$534
This Delta deal was found by Cheapflights users on 4/20. 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 5/305:55 pm
OAK
- YUL
2 stops26h 46m
Delta
Thu 6/46:00 am
YUL
- OAK
2 stops20h 57m
Delta
Deal found 4/20![Delta logo]()
$563
This Delta deal was found by Cheapflights users on 4/18. 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.
Wed 9/165:55 am
OAK
- YYZ
1 stop7h 50m
Delta
Tue 9/221:30 pm
YYZ
- OAK
2 stops13h 19m
Delta
Deal found 4/18![Delta logo]()
$566
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/306:00 am
OAK
- YYZ
2 stops14h 58m
Delta
Mon 7/137:45 am
YYZ
- OAK
2 stops19h 06m
Delta
Deal found 4/23![Delta logo]()
$571
This Delta deal was found by Cheapflights users on 4/19. 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 6/236:00 am
OAK
- YYZ
2 stops14h 14m
Delta
Sun 6/286:30 am
YYZ
- OAK
2 stops12h 53m
Delta
Deal found 4/19![Delta logo]()
$571
This Mytrip deal was found by Cheapflights users on 4/18. 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 6/211:30 pm
OAK
- YTZ
3 stops29h 25m
Multiple Airlines
Tue 6/95:00 pm
YTZ
- OAK
3 stops28h 34m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$837
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:30 pm
OAK
- YOW
2 stops15h 30m
Multiple Airlines
Fri 6/128:45 am
YOW
- OAK
2 stops15h 59m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$856
This Delta deal was found by Cheapflights users on 4/18. 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 5/55:55 am
OAK
- YYZ
2 stops9h 36m
Delta
Sat 5/912:29 pm
YYZ
- OAK
2 stops13h 05m
Delta
Deal found 4/18![Delta logo]()
$587
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:22 pm
OAK
- YUL
3 stops21h 08m
Multiple Airlines
Wed 7/226:45 am
YUL
- OAK
3 stops17h 59m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$873
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/56:00 am
OAK
- YYZ
2 stops14h 58m
Delta
Wed 7/155:45 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 4/23![Delta logo]()
$609
This Delta deal was found by Cheapflights users on 4/19. 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.
Wed 6/36:00 am
OAK
- YUL
2 stops14h 57m
Delta
Wed 6/107:00 am
YUL
- OAK
2 stops19h 54m
Delta
Deal found 4/19![Delta logo]()
$611
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:30 pm
OAK
- YTZ
3 stops17h 45m
Multiple Airlines
Wed 6/104:00 pm
YTZ
- OAK
3 stops32h 44m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$961
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Mon 7/135:45 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 4/21![Delta logo]()
$637
This Mytrip deal was found by Cheapflights users on 4/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:22 pm
OAK
- YUL
3 stops25h 03m
Multiple Airlines
Mon 5/258:45 pm
YUL
- OAK
2 stops18h 07m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$966
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 7/76:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Sun 7/1211:40 am
YYZ
- OAK
2 stops15h 11m
Delta
Deal found 4/23![Delta logo]()
$647
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/235:55 pm
OAK
- YYZ
2 stops15h 24m
Delta
Sat 5/306:10 am
YYZ
- OAK
2 stops13h 15m
Delta
Deal found 4/23![Delta logo]()
$652
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Wed 6/311:30 pm
OAK
- YUL
1 stop29h 00m
Multiple Airlines
Wed 6/1011:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,067
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:22 pm
OAK
- YUL
2 stops32h 08m
Multiple Airlines
Mon 9/77:05 am
YUL
- OAK
2 stops14h 29m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,069
This Delta deal was found by Cheapflights users on 4/19. 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.
Wed 6/246:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Wed 7/15:45 pm
YYZ
- OAK
1 stop9h 09m
Delta
Deal found 4/19![Delta logo]()
$674
This Mytrip deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/2511:30 pm
OAK
- YTZ
3 stops30h 55m
Multiple Airlines
Sun 7/54:55 pm
YTZ
- OAK
3 stops31h 49m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,073
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 5/46:20 am
OAK
- YUL
2 stops21h 55m
Multiple Airlines
Tue 5/511:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,084
This Expedia deal was found by Cheapflights users on 4/19. 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.
Thu 7/162:55 pm
OAK
- YHM
2 stops13h 15m
Multiple Airlines
Tue 7/217:25 am
YHM
- OAK
2 stops12h 30m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$1,085
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 6/65:55 pm
OAK
- YUL
2 stops14h 48m
Delta
Sat 6/137:00 am
YUL
- OAK
2 stops17h 34m
Delta
Deal found 4/23![Delta logo]()
$865
This Orbitz deal was found by Cheapflights users on 4/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:20 am
OAK
- YHM
2 stops17h 50m
Multiple Airlines
Tue 8/117:25 am
YHM
- OAK
2 stops14h 58m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,101
This Mytrip deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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.
Sun 6/2111:30 pm
OAK
- YOW
3 stops21h 55m
Multiple Airlines
Sat 6/276:15 pm
YOW
- OAK
3 stops30h 10m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,181
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/65:03 pm
OAK
- YUL
2 stops15h 36m
Delta
Mon 7/135:14 pm
YUL
- OAK
2 stops9h 37m
Delta
Deal found 4/22![Delta logo]()
$1,073
This Mytrip deal was found by Cheapflights users on 4/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1411:30 pm
OAK
- YTZ
3 stops19h 18m
Multiple Airlines
Sun 5/176:55 pm
YTZ
- OAK
3 stops29h 49m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$1,227
Last-minute flights from Oakland to OntarioDiscover last-minute flight deals from Oakland to Ontario. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Oakland to Ontario. Data last updated April 23, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/18. 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.
Sat 5/25:55 am
OAK
- YYZ
2 stops14h 15m
Delta
Sat 5/95:45 pm
YYZ
- OAK
1 stop7h 49m
Delta
Deal found 4/18![Delta logo]()
$582
This Delta deal was found by Cheapflights users on 4/18. 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.
Mon 5/45:55 am
OAK
- YYZ
2 stops14h 15m
Delta
Sat 5/95:45 pm
YYZ
- OAK
1 stop7h 49m
Delta
Deal found 4/18![Delta logo]()
$620
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:53 am
OAK
- YYZ
1 stop26h 52m
Alaska Airlines
Fri 5/84:55 pm
YYZ
- OAK
1 stop8h 37m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$626
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/72:09 pm
OAK
- YUL
2 stops20h 59m
Multiple Airlines
Sun 5/1011:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$858
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 5/116:20 am
OAK
- YYZ
1 stop30h 25m
Alaska Airlines
Wed 5/134:55 pm
YYZ
- OAK
1 stop10h 04m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$645
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Mon 5/185:45 pm
YYZ
- OAK
1 stop9h 12m
Delta
Deal found 4/21![Delta logo]()
$556
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/218:13 pm
OAK
- YUL
2 stops38h 59m
Multiple Airlines
Thu 5/2811:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$931
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 5/235:55 pm
OAK
- YYZ
2 stops15h 24m
Delta
Sat 5/305:45 pm
YYZ
- OAK
1 stop7h 49m
Delta
Deal found 4/23![Delta logo]()
$609
This Delta deal was found by Cheapflights users on 4/20. 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.
Tue 5/266:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Sat 5/305:45 pm
YYZ
- OAK
1 stop7h 49m
Delta
Deal found 4/20![Delta logo]()
$599
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Thu 5/287:00 am
OAK
- YYZ
1 stop29h 45m
Alaska Airlines
Tue 6/24:55 pm
YYZ
- OAK
1 stop10h 04m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$605
This Delta deal was found by Cheapflights users on 4/20. 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 5/305:55 pm
OAK
- YUL
2 stops26h 46m
Delta
Thu 6/46:00 am
YUL
- OAK
2 stops20h 57m
Delta
Deal found 4/20![Delta logo]()
$563
This Delta deal was found by Cheapflights users on 4/20. 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.
Sun 5/315:05 pm
OAK
- YUL
2 stops27h 08m
Delta
Thu 6/47:10 am
YUL
- OAK
2 stops19h 47m
Delta
Deal found 4/20![Delta logo]()
$716
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 April 23, 2026.
Search for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Deal found 4/21![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 4/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:03 pm
OAK
- YYZ
2 stops15h 16m
Delta
Deal found 4/21![Delta logo]()
$235
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
OAK
- YYZ
2 stops13h 59m
Delta
Deal found 4/22![Delta logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Tue 6/92:58 pm
OAK
- YYZ
3 stops35h 47m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 4/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:20 am
OAK
- YYZ
1 stop30h 25m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Wed 6/310:29 am
OAK
- YTZ
2 stops28h 31m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$252
This Delta deal was found by Cheapflights users on 4/20. 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 5/305:55 pm
OAK
- YUL
2 stops26h 46m
Delta
Deal found 4/20![Delta logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Wed 6/32:58 pm
OAK
- YYZ
3 stops35h 47m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Sat 6/67:00 am
OAK
- YYZ
2 stops19h 45m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 4/20. 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 5/306:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Deal found 4/20![Delta logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” 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 8/68:30 pm
OAK
- YUL
2 stops31h 35m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Tue 6/92:58 pm
OAK
- YTZ
2 stops19h 04m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$275
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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $518 (Delta) |
One-way from | $230 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $463 |
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 2,558,603 searches. Data last updated April 23, 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
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Fri 7/17
5:03 pm-11:19 am
2 stops15h 16m
Toronto Pearson Intl
Thu 7/23
7:45 am-11:51 pm
2 stops19h 06m
$533
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Sun 7/26
6:00 am-11:14 pm
2 stops14h 14m
Toronto Pearson Intl
Fri 7/31
12:09 pm-11:51 pm
2 stops14h 42m
$534
OaklandMontreal
OAK - YUL
OAKYUL
Oakland
Sat 5/30
5:55 pm-11:41 pm
2 stops26h 46m
Montreal Pierre Elliott Trudeau Intl
Thu 6/4
6:00 am-11:57 pm
2 stops20h 57m
$563
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Wed 9/16
5:55 am-4:45 pm
1 stop7h 50m
Toronto Pearson Intl
Tue 9/22
1:30 pm-11:49 pm
2 stops13h 19m
$566
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 6/30
6:00 am-11:58 pm
2 stops14h 58m
Toronto Pearson Intl
Mon 7/13
7:45 am-11:51 pm
2 stops19h 06m
$571
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 6/23
6:00 am-11:14 pm
2 stops14h 14m
Toronto Pearson Intl
Sun 6/28
6:30 am-4:23 pm
2 stops12h 53m
$571
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 5/5
5:55 am-6:31 pm
2 stops9h 36m
Toronto Pearson Intl
Sat 5/9
12:29 pm-10:34 pm
2 stops13h 05m
$587
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Wed 9/23
2:14 pm-3:45 pm
1 stop22h 31m
Toronto Pearson Intl
Tue 10/6
4:55 pm-8:48 am
2 stops18h 53m
$606
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Sun 7/5
6:00 am-11:58 pm
2 stops14h 58m
Toronto Pearson Intl
Wed 7/15
5:45 pm-11:51 pm
1 stop9h 06m
$609
OaklandMontreal
OAK - YUL
OAKYUL
Oakland
Wed 6/3
6:00 am-11:57 pm
2 stops14h 57m
Montreal Pierre Elliott Trudeau Intl
Wed 6/10
7:00 am-11:54 pm
2 stops19h 54m
$611
Showing 1-10 of 60 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-YTZ
OAK-YUL
OAK-YOW
OAK-YHM
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-YTZ
OAK-YUL
OAK-YOW
No data available for this route at this time. Please check back soon.
Related info for your journey
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