$79+ Cheap flights from Santa Rosa to Ontario (STS - ONT)
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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STS — ONT
Mar 17 — Mar 241
1 adult, Economy
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Find cheap flights from Santa Rosa to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from 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 February 15, 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 February 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/2510:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Wed 5/612:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/32:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Tue 4/74:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$127
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/3010:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Thu 5/712:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 3/202:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Sat 3/214:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 7/111:14 pm
STS
- ONT
Nonstop1h 28m
Alaska Airlines
Tue 7/143:22 pm
ONT
- STS
Nonstop1h 31m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/2410:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Tue 5/512:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/52:18 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Wed 4/84:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 4/2410:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Sun 4/2612:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/287:46 pm
STS
- ONT
1 stop13h 59m
Alaska Airlines
Thu 5/712:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$190
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/2610:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Thu 5/712:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 4/247:46 pm
STS
- ONT
1 stop13h 59m
Alaska Airlines
Tue 4/2812:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$200
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/2810:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Mon 5/43:26 pm
ONT
- STS
1 stop7h 31m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$205
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 February 15, 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 February 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 3/282:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Sat 4/44:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 5/710:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Wed 5/132:58 pm
ONT
- STS
Nonstop1h 28m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/12:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Mon 4/64:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 4/112:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Wed 4/154:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/92:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Tue 4/144:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 5/610:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Sat 5/912:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/12:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Wed 4/84:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 5/910:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Wed 5/132:58 pm
ONT
- STS
Nonstop1h 28m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$117
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/32:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Sat 4/44:22 pm
ONT
- STS
Nonstop2h 00m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$127
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 4/202:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Fri 5/112:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/2510:41 am
STS
- ONT
Nonstop1h 27m
Alaska Airlines
Fri 5/112:48 pm
ONT
- STS
Nonstop1h 32m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$137
Last-minute flights from Santa Rosa to OntarioDiscover last-minute flight deals from Santa Rosa to Ontario. Data last updated February 15, 2026 and is based on user searches.
Discover last-minute flight deals from Santa Rosa to Ontario. Data last updated February 15, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 2/196:50 pm
STS
- ONT
2 stops16h 18m
Alaska Airlines
Wed 2/256:14 am
ONT
- STS
2 stops27h 00m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$814
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 2/197:57 pm
STS
- ONT
1 stop27h 35m
Alaska Airlines
Thu 2/266:08 pm
ONT
- STS
2 stops29h 42m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$818
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 2/1911:15 am
STS
- ONT
1 stop12h 17m
Alaska Airlines
Tue 2/246:14 am
ONT
- STS
1 stop28h 18m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$833
This American Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 2/204:23 pm
STS
- ONT
1 stop5h 44m
American Airlines
Sun 2/229:53 am
ONT
- STS
1 stop6h 00m
American Airlines
Deal found 2/13![American Airlines logo]()
$639
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:15 am
STS
- ONT
2 stops31h 42m
Alaska Airlines
Wed 2/256:14 am
ONT
- STS
2 stops10h 33m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$794
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2011:15 am
STS
- ONT
2 stops31h 42m
Alaska Airlines
Thu 2/266:08 pm
ONT
- STS
2 stops29h 42m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$804
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 2/2111:15 am
STS
- ONT
1 stop23h 53m
Alaska Airlines
Sat 2/284:02 pm
ONT
- STS
1 stop18h 30m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$753
This CheapOair deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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.
Sun 2/227:57 pm
STS
- ONT
1 stop15h 11m
Alaska Airlines
Fri 2/276:14 am
ONT
- STS
1 stop17h 36m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$813
This CheapOair deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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.
Tue 2/247:57 pm
STS
- ONT
2 stops14h 07m
Alaska Airlines
Wed 2/257:59 pm
ONT
- STS
2 stops14h 33m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$824
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 February 15, 2026.
Search for one-way flight options from Santa Rosa to Ontario. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/182:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$79
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 3/202:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$89
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/52:18 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$99
This American Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/214:23 pm
STS
- ONT
1 stop5h 44m
American Airlines
Deal found 2/14![American Airlines logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 4/62:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$129
This Southwest deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:00 am
STS
- ONT
2 stops6h 55m
Southwest
Deal found 2/14![Southwest logo]()
$134
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/247:46 pm
STS
- ONT
1 stop13h 59m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” 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 3/77:57 pm
STS
- ONT
1 stop14h 11m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$157
This Expedia deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/212:12 pm
STS
- ONT
Nonstop1h 30m
Alaska Airlines
Deal found 2/14![Alaska Airlines logo]()
$159
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” 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 3/67:57 pm
STS
- ONT
1 stop19h 11m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” 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 2/281:03 pm
STS
- ONT
1 stop6h 06m
American Airlines
Deal found 2/12![American Airlines logo]()
$169
This Alaska Airlines deal was found by Cheapflights users on 2/13. Clicking the “Pick Dates” 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 4/307:23 am
STS
- ONT
2 stops16h 36m
Alaska Airlines
Deal found 2/13![Alaska Airlines logo]()
$173
Find flight deals from Santa Rosa to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $117 (Alaska Airlines) |
One-way from | $79 (Alaska Airlines) |
Popular in | October |
Cheapest in | April |
Average price | $241 |
Good round-trip deal | $157 or less |
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 February 15, 2026.
Use the filters below to find and compare flights from Santa Rosa to Ontario that are best for you.
Fly from
Santa Rosa
Fly to
Ontario
Route
Depart
Return
Price
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Sat 3/28
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Sat 4/4
4:22 pm-6:22 pm
Nonstop2h 00m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Thu 5/7
10:41 am-12:08 pm
Nonstop1h 27m
Ontario
Wed 5/13
2:58 pm-4:26 pm
Nonstop1h 28m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Wed 4/1
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Mon 4/6
4:22 pm-6:22 pm
Nonstop2h 00m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Sat 4/11
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Wed 4/15
4:22 pm-6:22 pm
Nonstop2h 00m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Thu 4/9
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Tue 4/14
4:22 pm-6:22 pm
Nonstop2h 00m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Wed 5/6
10:41 am-12:08 pm
Nonstop1h 27m
Ontario
Sat 5/9
12:48 pm-2:20 pm
Nonstop1h 32m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Wed 4/1
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Wed 4/8
4:22 pm-6:22 pm
Nonstop2h 00m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Sat 5/9
10:41 am-12:08 pm
Nonstop1h 27m
Ontario
Wed 5/13
2:58 pm-4:26 pm
Nonstop1h 28m
$117
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Fri 4/3
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Sat 4/4
4:22 pm-6:22 pm
Nonstop2h 00m
$127
Santa RosaOntario
STS - ONT
STSONT
Santa Rosa Sonoma County
Mon 4/20
2:12 pm-3:42 pm
Nonstop1h 30m
Ontario
Fri 5/1
12:48 pm-2:20 pm
Nonstop1h 32m
$137
Showing 1-10 of 20 results
Compare providers for flights from Santa Rosa to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to Ontario in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Santa Rosa-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santa Rosa-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Santa Rosa-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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-ONT
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
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 February 15, 2026.
Read reviews from past customers who have flown Alaska Airlines and American Airlines from Santa Rosa to Ontario. 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.
Overall
8.0
Food
7.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Food
7.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Overall
8.0
Food
7.1
Crew
8.5
Comfort
7.8
Entertainment
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Related info for your journey
Find useful and relevant information for your journey from Santa Rosa 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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Complete your trip
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 15, 2026.
Santa Rosa and Ontario flights
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Top 2 airlines flying from Santa Rosa to Ontario
Discover the top 2 airlines that operate flights from Santa Rosa 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 February 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$217 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$198 | Average$296 | FlexibilityNo cancel fee | On-time71% |