$277+ Cheap flights from Santa Rosa (STS) 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — YYZ
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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Find cheap flights from Santa Rosa to Ontario with Cheapflights
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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 Santa Rosa to OntarioExplore the most affordable flight options available from Santa Rosa to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
Explore the most affordable flight options available from Santa Rosa to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:40 pm -
1 stop24h 29m
Mon 9/78:35 pm -
1 stop23h 04m
Deal found 8/3![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/122:00 pm -
2 stops32h 05m
Mon 10/198:35 pm -
1 stop22h 37m
Deal found 8/4![Multiple Airlines logo]()
$567
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:40 pm -
1 stop24h 29m
Wed 9/99:55 am -
1 stop9h 44m
Deal found 8/5![Multiple Airlines logo]()
$579
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 11/101:13 pm -
2 stops23h 52m
Wed 11/185:15 pm -
1 stop22h 06m
Deal found 8/1![Alaska Airlines logo]()
$599
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:44 pm -
1 stop21h 22m
Wed 11/185:12 pm -
1 stop22h 13m
Deal found 8/1![American Airlines logo]()
$601
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:13 am -
2 stops26h 47m
Fri 9/258:35 pm -
1 stop23h 04m
Deal found 8/4![Multiple Airlines logo]()
$607
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:08 pm -
2 stops19h 36m
Tue 9/225:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$687
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:08 pm -
2 stops19h 36m
Mon 9/213:45 pm -
1 stop23h 24m
Deal found 8/1![American Airlines logo]()
$707
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:21 pm -
2 stops19h 14m
Mon 9/213:45 pm -
1 stop23h 24m
Deal found 8/1![American Airlines logo]()
$708
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:08 pm -
2 stops19h 36m
Sat 9/267:50 am -
2 stops11h 00m
Deal found 8/5![American Airlines logo]()
$724
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2011:25 am -
2 stops33h 26m
Mon 1/46:00 am -
2 stops18h 48m
Deal found 8/4![Delta logo]()
$738
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:58 pm -
2 stops30h 55m
Tue 9/85:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$748
Best flights from Santa Rosa to OntarioDiscover carefully curated flight deals from Santa Rosa to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Santa Rosa to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 11/101:13 pm -
2 stops23h 52m
Wed 11/185:15 pm -
1 stop22h 06m
Deal found 8/1![Alaska Airlines logo]()
$599
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1012:44 pm -
1 stop21h 22m
Wed 11/185:12 pm -
1 stop22h 13m
Deal found 8/1![American Airlines logo]()
$601
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:47 pm -
2 stops15h 32m
Fri 11/276:00 am -
2 stops13h 06m
Deal found 8/2![Delta logo]()
$676
This oojo deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:03 am -
2 stops31h 55m
Fri 9/2510:00 am -
2 stops14h 59m
Deal found 8/4![Multiple Airlines logo]()
$1,026
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/144:47 pm -
2 stops15h 28m
Mon 12/216:00 am -
2 stops13h 08m
Deal found 8/4![Delta logo]()
$677
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:58 pm -
2 stops30h 55m
Tue 9/85:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$748
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:07 am -
2 stops11h 47m
Thu 9/34:55 pm -
1 stop8h 04m
Deal found 8/3![Alaska Airlines logo]()
$749
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:50 pm -
2 stops16h 29m
Sat 10/176:30 am -
2 stops12h 35m
Deal found 8/5![Delta logo]()
$698
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:07 am -
2 stops11h 47m
Thu 9/34:55 pm -
1 stop8h 04m
Deal found 8/3![Alaska Airlines logo]()
$749
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:08 pm -
2 stops38h 38m
Tue 9/85:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$768
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1311:29 am -
2 stops8h 42m
Tue 12/226:30 am -
2 stops12h 38m
Deal found 8/4![Delta logo]()
$728
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:00 am -
1 stop30h 05m
Sat 10/315:15 pm -
2 stops27h 48m
Deal found 8/3![Alaska Airlines logo]()
$761
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:21 pm -
2 stops17h 05m
Wed 9/237:50 am -
2 stops11h 00m
Deal found 8/2![American Airlines logo]()
$768
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2011:25 am -
2 stops33h 26m
Thu 12/316:00 am -
2 stops31h 39m
Deal found 8/4![Delta logo]()
$738
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:39 pm -
1 stop22h 56m
Mon 9/213:45 pm -
1 stop23h 24m
Deal found 8/1![American Airlines logo]()
$781
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/95:06 pm -
1 stop19h 39m
Sat 10/174:55 pm -
1 stop23h 11m
Deal found 8/1![Alaska Airlines logo]()
$788
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2011:25 am -
2 stops33h 26m
Sun 1/37:00 am -
2 stops31h 54m
Deal found 8/4![Delta logo]()
$777
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:08 pm -
2 stops16h 35m
Tue 8/255:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$791
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:08 pm -
2 stops27h 45m
Tue 9/15:34 pm -
2 stops21h 35m
Deal found 8/5![American Airlines logo]()
$791
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:21 am -
2 stops9h 01m
Mon 11/27:00 am -
2 stops12h 05m
Deal found 8/2![Delta logo]()
$877
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:08 pm -
2 stops20h 21m
Sat 9/512:29 pm -
2 stops26h 40m
Deal found 8/5![American Airlines logo]()
$813
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2012:59 pm -
2 stops23h 12m
Fri 1/14:00 pm -
2 stops23h 29m
Deal found 8/4![American Airlines logo]()
$856
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:21 pm -
3 stops24h 39m
Fri 9/257:00 am -
3 stops32h 38m
Deal found 8/4![American Airlines logo]()
$1,208
Last-minute flights from Santa Rosa to OntarioDiscover last-minute flight deals from Santa Rosa to Ontario. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Santa Rosa to Ontario. Data last updated August 6, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/194:08 pm -
2 stops15h 51m
Sun 8/236:46 am -
1 stop8h 23m
Deal found 8/4![American Airlines logo]()
$645
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:08 pm -
2 stops15h 51m
Mon 8/246:28 pm -
1 stop20h 41m
Deal found 8/4![American Airlines logo]()
$678
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2112:39 pm -
1 stop22h 20m
Sun 8/236:46 am -
1 stop8h 23m
Deal found 8/4![American Airlines logo]()
$668
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:08 pm -
2 stops15h 51m
Tue 9/17:15 pm -
2 stops20h 13m
Deal found 8/3![American Airlines logo]()
$665
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:08 pm -
2 stops15h 09m
Fri 9/47:15 pm -
2 stops19h 54m
Deal found 8/3![American Airlines logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:40 pm -
1 stop24h 29m
Mon 9/78:35 pm -
1 stop23h 04m
Deal found 8/3![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:40 pm -
1 stop24h 29m
Wed 9/99:55 am -
1 stop9h 44m
Deal found 8/5![Multiple Airlines logo]()
$579
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:21 pm -
2 stops19h 14m
Mon 9/213:45 pm -
1 stop23h 24m
Deal found 8/1![American Airlines logo]()
$708
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:13 am -
2 stops26h 47m
Fri 9/258:35 pm -
1 stop23h 04m
Deal found 8/4![Multiple Airlines logo]()
$607
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:21 pm -
2 stops14h 57m
Fri 9/256:00 am -
2 stops12h 50m
Deal found 8/4![American Airlines logo]()
$677
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:08 pm -
2 stops19h 36m
Tue 9/225:34 pm -
2 stops21h 35m
Deal found 8/2![American Airlines logo]()
$687
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/181:08 pm -
2 stops19h 36m
Mon 9/213:45 pm -
1 stop23h 24m
Deal found 8/1![American Airlines logo]()
$707
One-way flights from Santa Rosa to OntarioSearch for one-way flight options from Santa Rosa to Ontario. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Santa Rosa to Ontario. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/277:00 am -
2 stops13h 00m
Deal found 8/3![Delta logo]()
$277
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:58 pm -
2 stops19h 45m
Deal found 8/3![American Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:08 pm -
2 stops19h 31m
Deal found 8/3![American Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:58 pm -
2 stops19h 01m
Deal found 8/3![American Airlines logo]()
$326
This Alaska Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/97:00 am -
2 stops29h 45m
Deal found 8/1![Alaska Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:21 am -
2 stops8h 54m
Deal found 8/5![Delta logo]()
$348
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:43 pm -
2 stops22h 00m
Deal found 8/1![American Airlines logo]()
$350
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:08 pm -
2 stops19h 50m
Deal found 8/3![American Airlines logo]()
$356
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:50 pm -
2 stops16h 29m
Deal found 8/6![Delta logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:03 am -
2 stops12h 56m
Deal found 8/6![Alaska Airlines logo]()
$407
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:39 pm -
2 stops20h 04m
Deal found 8/1![American Airlines logo]()
$420
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:58 pm -
2 stops22h 46m
Deal found 8/1![American Airlines logo]()
$471
Find flight deals from Santa Rosa to Ontario
Keep the following information in mind while searching for Santa Rosa to Ontario flight deals. Data was last updated August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $425 (Kiwi.com) |
One-way from | $277 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $557 |
Cheapflights Fare Finder
Customize your flight search to find flights from Santa Rosa 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 August 6, 2026.
Use the filters below to find and compare flights from Santa Rosa to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Tue 11/10
1:13 pm-4:05 pm
2 stops23h 52m
Toronto Pearson Intl
Wed 11/18
5:15 pm-12:21 pm
1 stop22h 06m
$599
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Tue 11/10
12:44 pm-1:06 pm
1 stop21h 22m
Toronto Pearson Intl
Wed 11/18
5:12 pm-12:25 pm
1 stop22h 13m
$601
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Mon 11/23
4:47 pm-11:19 am
2 stops15h 32m
Toronto Pearson Intl
Fri 11/27
6:00 am-4:06 pm
2 stops13h 06m
$676
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Mon 12/14
4:47 pm-11:15 am
2 stops15h 28m
Toronto Pearson Intl
Mon 12/21
6:00 am-4:08 pm
2 stops13h 08m
$677
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Fri 10/9
4:50 pm-12:19 pm
2 stops16h 29m
Toronto Pearson Intl
Sat 10/17
6:30 am-4:05 pm
2 stops12h 35m
$698
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Sun 12/13
11:29 am-11:11 pm
2 stops8h 42m
Toronto Pearson Intl
Tue 12/22
6:30 am-4:08 pm
2 stops12h 38m
$728
Santa RosaMontreal
STS Santa Rosa Sonoma County - YUL Montreal Pierre Elliott Trudeau Intl
STSYUL
Santa Rosa Sonoma County
Sun 12/20
11:25 am-11:51 pm
2 stops33h 26m
Montreal Pierre Elliott Trudeau Intl
Thu 12/31
6:00 am-10:39 am
2 stops31h 39m
$738
Santa RosaMontreal
STS Santa Rosa Sonoma County - YUL Montreal Pierre Elliott Trudeau Intl
STSYUL
Santa Rosa Sonoma County
Wed 9/2
12:58 pm-10:53 pm
2 stops30h 55m
Montreal Pierre Elliott Trudeau Intl
Tue 9/8
5:34 pm-12:09 pm
2 stops21h 35m
$748
Quickest round-trip
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Sat 8/29
8:07 am-10:54 pm
2 stops11h 47m
Toronto Pearson Intl
Thu 9/3
4:55 pm-9:59 pm
1 stop8h 04m
$749
Santa RosaToronto
STS Santa Rosa Sonoma County - YYZ Toronto Pearson Intl
STSYYZ
Santa Rosa Sonoma County
Tue 8/25
8:07 am-10:54 pm
2 stops11h 47m
Toronto Pearson Intl
Thu 9/3
4:55 pm-9:59 pm
1 stop8h 04m
$749
Showing 1-10 of 37 resultsSorted by cheapest first
Best time to book a flight from Santa Rosa to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Santa Rosa with our price prediction graph.
STS-YYZ
STS-YUL
STS-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 Santa Rosa to Ontario
STS-CAON
STS-YYZ
STS-YUL
STS-YOW
No data available for this route at this time. Please check back soon.
Related info for your journey
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