$168+ Cheap flights from San Diego (SAN) to Ontario
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YYZ
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Cheapest flights from San Diego to OntarioExplore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
Explore the most affordable flight options available from San Diego to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:53 pm
SAN
- YYZ
1 stop16h 16m
Multiple Airlines
Tue 8/2510:50 am
YYZ
- SAN
2 stops13h 08m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/113:03 pm
SAN
- YYZ
2 stops31h 02m
Multiple Airlines
Tue 8/188:35 pm
YYZ
- SAN
1 stop27h 23m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:03 pm
SAN
- YYZ
2 stops35h 07m
Multiple Airlines
Tue 8/188:35 pm
YYZ
- SAN
1 stop27h 23m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 8/117:00 am
YYZ
- SAN
1 stop10h 08m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Wed 8/1910:50 am
YYZ
- SAN
2 stops13h 08m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 7/289:30 am
YYZ
- SAN
1 stop8h 57m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 7/1410:50 am
YYZ
- SAN
2 stops30h 18m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Sat 7/259:00 am
YYZ
- SAN
2 stops14h 06m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/171:22 pm
SAN
- YYZ
1 stop14h 17m
Multiple Airlines
Mon 9/2110:50 am
YYZ
- SAN
2 stops12h 58m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Mon 7/2710:50 am
YYZ
- SAN
2 stops30h 18m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$415
This Gotogate deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 am
SAN
- YUL
Nonstop5h 33m
Air Canada
Tue 8/117:30 am
YUL
- SAN
1 stop11h 40m
Air Canada
Deal found 6/9![Air Canada logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:30 pm
SAN
- YOW
1 stop11h 05m
WestJet
Sun 9/137:20 am
YOW
- SAN
1 stop9h 50m
WestJet
Deal found 6/9![WestJet logo]()
$434
Best flights from San Diego to OntarioDiscover carefully curated flight deals from San Diego to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
Discover carefully curated flight deals from San Diego to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:41 am
SAN
- YQT
2 stops13h 07m
United Airlines
Sun 9/275:15 am
YQT
- SAN
2 stops17h 53m
United Airlines
Deal found 6/8![United Airlines logo]()
$456
This WestJet deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:30 pm
SAN
- YQT
1 stop24h 30m
WestJet
Sun 9/277:50 pm
YQT
- SAN
1 stop21h 20m
WestJet
Deal found 6/9![WestJet logo]()
$475
This United deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:40 pm
SAN
- YUL
1 stop15h 50m
Multiple Airlines
Tue 9/85:45 pm
YUL
- SAN
Nonstop5h 51m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$501
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:15 am
SAN
- YYZ
1 stop12h 46m
Delta
Tue 7/286:10 am
YYZ
- SAN
1 stop7h 17m
Delta
Deal found 6/8![Delta logo]()
$509
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:05 am
SAN
- YXU
2 stops11h 41m
Air Canada
Tue 11/35:45 am
YXU
- SAN
1 stop8h 08m
Air Canada
Deal found 6/10![Air Canada logo]()
$532
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:00 am
SAN
- YUL
Nonstop5h 27m
United Airlines
Fri 9/184:55 pm
YUL
- SAN
1 stop8h 15m
United Airlines
Deal found 6/9![United Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 6/7. 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.
Fri 7/2410:15 pm
SAN
- YYZ
1 stop10h 04m
Delta
Wed 7/2912:09 pm
YYZ
- SAN
1 stop9h 05m
Delta
Deal found 6/7![Delta logo]()
$509
This United deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:45 pm
SAN
- YOW
1 stop9h 26m
Multiple Airlines
Tue 11/176:00 am
YOW
- SAN
1 stop10h 04m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$525
This WestJet deal was found by Cheapflights users on 6/5. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:30 pm
SAN
- YQT
1 stop24h 30m
WestJet
Sat 9/197:20 pm
YQT
- SAN
2 stops21h 50m
WestJet
Deal found 6/5![WestJet logo]()
$539
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:00 pm
SAN
- YUL
2 stops12h 16m
United Airlines
Wed 9/309:15 am
YUL
- SAN
1 stop8h 42m
United Airlines
Deal found 6/10![United Airlines logo]()
$505
This Delta deal was found by Cheapflights users on 6/6. 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.
Mon 8/2410:17 pm
SAN
- YUL
1 stop10h 39m
Delta
Sat 8/297:00 am
YUL
- SAN
1 stop8h 33m
Delta
Deal found 6/6![Delta logo]()
$510
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:30 pm
SAN
- YKF
1 stop25h 20m
WestJet
Thu 8/278:40 pm
YKF
- SAN
1 stop20h 30m
WestJet
Deal found 6/9![WestJet logo]()
$554
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:00 am
SAN
- YUL
1 stop12h 52m
Delta
Tue 8/2512:44 pm
YUL
- SAN
1 stop13h 16m
Delta
Deal found 6/8![Delta logo]()
$510
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:00 pm
SAN
- YKF
2 stops19h 00m
Multiple Airlines
Mon 8/316:05 am
YKF
- SAN
1 stop11h 05m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$569
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:00 pm
SAN
- YUL
2 stops12h 16m
United Airlines
Mon 9/146:35 pm
YUL
- SAN
1 stop8h 54m
United Airlines
Deal found 6/10![United Airlines logo]()
$521
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:05 am
SAN
- YSB
2 stops23h 04m
Air Canada
Thu 11/127:55 pm
YSB
- SAN
1 stop17h 58m
Air Canada
Deal found 6/9![Air Canada logo]()
$660
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1410:25 pm
SAN
- YUL
1 stop12h 16m
Delta
Sun 8/237:00 am
YUL
- SAN
1 stop13h 04m
Delta
Deal found 6/8![Delta logo]()
$510
This Justfly.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:30 pm
SAN
- YKF
1 stop25h 20m
WestJet
Mon 8/108:40 pm
YKF
- SAN
1 stop20h 30m
WestJet
Deal found 6/10![WestJet logo]()
$563
This Kissandfly.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:51 pm
SAN
- YTZ
2 stops18h 09m
Multiple Airlines
Wed 7/1511:55 am
YTZ
- SAN
2 stops14h 48m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$570
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:00 pm
SAN
- YUL
2 stops12h 16m
United Airlines
Thu 9/246:35 pm
YUL
- SAN
1 stop8h 56m
United Airlines
Deal found 6/9![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 6/6. 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.
Sun 8/306:15 am
SAN
- YUL
1 stop7h 05m
Delta
Sat 9/56:00 am
YUL
- SAN
1 stop7h 20m
Delta
Deal found 6/6![Delta logo]()
$510
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:30 pm
SAN
- YKF
1 stop25h 20m
WestJet
Tue 9/88:40 pm
YKF
- SAN
1 stop20h 30m
WestJet
Deal found 6/9![WestJet logo]()
$573
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:40 am
SAN
- YOW
1 stop7h 36m
United Airlines
Sat 10/1710:25 am
YOW
- SAN
2 stops10h 21m
United Airlines
Deal found 6/9![United Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 6/7. 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.
Mon 8/248:00 am
SAN
- YUL
1 stop12h 52m
Delta
Sun 8/306:00 am
YUL
- SAN
1 stop7h 20m
Delta
Deal found 6/7![Delta logo]()
$510
This Booking.com deal was found by Cheapflights users on 6/7. 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.
Thu 8/273:30 pm
SAN
- YHM
1 stop22h 45m
WestJet
Sun 8/306:10 pm
YHM
- SAN
1 stop23h 00m
WestJet
Deal found 6/7![WestJet logo]()
$579
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/85:05 pm
SAN
- YXU
2 stops13h 12m
Air Canada
Tue 7/1410:05 am
YXU
- SAN
2 stops14h 39m
Air Canada
Deal found 6/8![Air Canada logo]()
$781
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:09 pm
SAN
- YOW
1 stop17h 30m
United Airlines
Mon 11/27:25 pm
YOW
- SAN
1 stop18h 43m
United Airlines
Deal found 6/8![United Airlines logo]()
$535
This Mytrip deal was found by Cheapflights users on 6/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:30 pm
SAN
- YKF
1 stop25h 20m
Multiple Airlines
Sun 8/306:05 am
YKF
- SAN
1 stop11h 05m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$650
This Delta deal was found by Cheapflights users on 6/6. 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.
Sat 7/410:15 pm
SAN
- YUL
1 stop10h 42m
Delta
Sat 7/116:00 am
YUL
- SAN
1 stop11h 09m
Delta
Deal found 6/6![Delta logo]()
$517
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:52 pm
SAN
- YOW
1 stop16h 56m
Multiple Airlines
Tue 7/148:15 pm
YOW
- SAN
1 stop20h 55m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$654
Last-minute flights from San Diego to OntarioDiscover last-minute flight deals from San Diego to Ontario. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Ontario. Data last updated June 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:52 pm
SAN
- YTZ
1 stop9h 07m
Multiple Airlines
Mon 7/136:00 pm
YTZ
- SAN
1 stop20h 43m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$494
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/73:03 pm
SAN
- YYZ
2 stops12h 52m
Multiple Airlines
Sat 7/117:00 am
YYZ
- SAN
1 stop16h 06m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 7/1410:50 am
YYZ
- SAN
2 stops30h 18m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:46 pm
SAN
- YYZ
1 stop22h 39m
Multiple Airlines
Tue 7/289:30 am
YYZ
- SAN
1 stop8h 57m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$418
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:03 pm
SAN
- YYZ
2 stops31h 02m
Multiple Airlines
Tue 7/218:35 pm
YYZ
- SAN
1 stop20h 33m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:52 pm
SAN
- YTZ
1 stop9h 07m
Multiple Airlines
Fri 7/171:15 pm
YTZ
- SAN
1 stop9h 38m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$543
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Wed 8/1910:50 am
YYZ
- SAN
2 stops13h 08m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 7/289:30 am
YYZ
- SAN
1 stop8h 57m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Thu 7/309:30 am
YYZ
- SAN
1 stop8h 57m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Sat 7/259:00 am
YYZ
- SAN
2 stops14h 06m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/223:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Mon 7/2710:50 am
YYZ
- SAN
2 stops30h 18m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Tue 8/117:00 am
YYZ
- SAN
1 stop10h 08m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$398
One-way flights from San Diego to OntarioSearch for one-way flight options from San Diego to Ontario. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
Search for one-way flight options from San Diego to Ontario. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:46 am
SAN
- YYZ
3 stops35h 13m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:03 pm
SAN
- YYZ
2 stops12h 52m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:53 pm
SAN
- YYZ
3 stops28h 17m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$170
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:00 am
SAN
- YUL
Nonstop5h 33m
Air Canada
Deal found 6/8![Air Canada logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/73:03 pm
SAN
- YYZ
3 stops35h 07m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:03 pm
SAN
- YYZ
1 stop12h 36m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:53 pm
SAN
- YYZ
2 stops28h 52m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$190
This Air Canada deal was found by Cheapflights users on 6/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:00 am
SAN
- YUL
Nonstop5h 33m
Air Canada
Deal found 6/6![Air Canada logo]()
$192
This CheapOair deal was found by Cheapflights users on 6/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:30 pm
SAN
- YYZ
1 stop11h 15m
WestJet
Deal found 6/7![WestJet logo]()
$200
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
SAN
- YUL
Nonstop5h 27m
Air Canada
Deal found 6/8![Air Canada logo]()
$200
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am
SAN
- YUL
Nonstop5h 27m
Air Canada
Deal found 6/9![Air Canada logo]()
$219
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:30 pm
SAN
- YUL
1 stop7h 04m
Delta
Deal found 6/8![Delta logo]()
$220
Find flight deals from San Diego to Ontario
Keep the following information in mind while searching for San Diego to Ontario flight deals. Data was last updated June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $386 (Kiwi.com) |
One-way from | $168 (Kiwi.com) |
Popular in | October |
Cheapest in | November |
Average price | $554 |
Good round-trip deal | $566 or less |
Good one-way deal | $324 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 11, 2026.
Use the filters below to find and compare flights from San Diego to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San DiegoThunder Bay
SAN - YQT
SANYQT
San Diego
Wed 9/23
6:41 am-10:48 pm
2 stops13h 07m
Thunder Bay
Sun 9/27
5:15 am-8:08 pm
2 stops17h 53m
$456
San DiegoThunder Bay
SAN - YQT
SANYQT
San Diego
Wed 9/23
3:30 pm-7:00 pm
1 stop24h 30m
Thunder Bay
Sun 9/27
7:50 pm-2:10 pm
1 stop21h 20m
$475
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Fri 9/4
10:40 pm-5:30 pm
1 stop15h 50m
Montreal Pierre Elliott Trudeau Intl
Tue 9/8
5:45 pm-8:36 pm
Nonstop5h 51m
$501
Quickest round-trip
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Wed 9/16
7:00 am-3:27 pm
Nonstop5h 27m
Montreal Pierre Elliott Trudeau Intl
Fri 9/18
4:55 pm-10:10 pm
1 stop8h 15m
$505
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Mon 9/21
5:00 pm-8:16 am
2 stops12h 16m
Montreal Pierre Elliott Trudeau Intl
Wed 9/30
9:15 am-2:57 pm
1 stop8h 42m
$505
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Thu 7/23
6:15 am-10:01 pm
1 stop12h 46m
Toronto Pearson Intl
Tue 7/28
6:10 am-10:27 am
1 stop7h 17m
$509
San DiegoToronto
SAN - YYZ
SANYYZ
San Diego
Fri 7/24
10:15 pm-11:19 am
1 stop10h 04m
Toronto Pearson Intl
Wed 7/29
12:09 pm-6:14 pm
1 stop9h 05m
$509
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Mon 8/24
10:17 pm-11:56 am
1 stop10h 39m
Montreal Pierre Elliott Trudeau Intl
Sat 8/29
7:00 am-12:33 pm
1 stop8h 33m
$510
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Wed 8/19
8:00 am-11:52 pm
1 stop12h 52m
Montreal Pierre Elliott Trudeau Intl
Tue 8/25
12:44 pm-11:00 pm
1 stop13h 16m
$510
San DiegoMontreal
SAN - YUL
SANYUL
San Diego
Fri 8/14
10:25 pm-1:41 pm
1 stop12h 16m
Montreal Pierre Elliott Trudeau Intl
Sun 8/23
7:00 am-5:04 pm
1 stop13h 04m
$510
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Diego to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from San Diego with our price prediction graph.
SAN-YYZ
SAN-YUL
SAN-YOW
SAN-YTZ
SAN-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 San Diego to Ontario
SAN-CAON
SAN-YYZ
SAN-YUL
SAN-YOW
SAN-YTZ
What is the cheapest month to book a flight from San Diego to Region of Ontario?
Currently, September is the cheapest month in which you can book a flight from San Diego to Region of Ontario (average of $120). Flying from San Diego to Region of Ontario in January is currently the most expensive (average of $263). 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 SAN to ON?
Find hourly flight availability from San Diego to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 11, 2026.
When flying from San Diego 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 San Diego to Region of Ontario
Explore weekly flight availability from San Diego to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 11, 2026.
The most flights from SAN to CAON are scheduled on a Wednesday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from San Diego to Region of Ontario?
How far ahead should I book a flight from San Diego to Region of Ontario?
The price you pay for your flight from San Diego to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 11, 2026.
See what other customers who have flown with Delta,United Airlines, andQatar Airways from San Diego to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Diego 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 San Diego 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 San Diego to Ontario by cabin class
Find flights from San Diego to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Diego and Ontario flights
Browse other San Diego and Ontario flight options. Last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Diego to Ontario flights
Consider these flights traveling from San Diego to Ontario.
Top 4 airlines flying from San Diego to Ontario
Discover the top 4 airlines that operate flights from San Diego to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$213 | Average$465 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$264 | Average$546 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$303 | Average$588 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$388 | Average$599 | FlexibilityNo cancel fee | On-time71% |