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Cheap flights from Ontario to Santa Rosa from C$ 359

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STS
3 Jun — 10 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Santa Rosa

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Santa Rosa
Explore the most affordable flight options available from Ontario to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 May 2026.

Mon 15/69:45 a.m.
YYZ
-
STS
1 stop10h 31m
Multiple Airlines
Wed 17/61:06 p.m.
STS
-
YYZ
2 stops13h 04m
Multiple Airlines
Deal found 1/5C$ 777
Sat 23/56:46 a.m.
YYZ
-
STS
1 stop8h 17m
American Airlines
Sat 30/54:20 p.m.
STS
-
YYZ
2 stops14h 58m
American Airlines
Deal found 30/4C$ 796
Fri 12/66:00 a.m.
YYZ
-
STS
2 stops12h 50m
American Airlines
Sun 21/64:20 p.m.
STS
-
YYZ
2 stops27h 10m
American Airlines
Deal found 1/5C$ 930
Mon 8/66:24 p.m.
YYZ
-
STS
2 stops21h 15m
American Airlines
Mon 29/612:45 p.m.
STS
-
YYZ
1 stop22h 12m
American Airlines
Deal found 2/5C$ 949
Mon 8/611:39 a.m.
YYZ
-
STS
2 stops27h 26m
American Airlines
Sat 27/64:20 p.m.
STS
-
YYZ
2 stops15h 38m
American Airlines
Deal found 2/5C$ 955
Fri 10/72:55 p.m.
YYZ
-
STS
1 stop24h 08m
American Airlines
Sat 1/812:43 p.m.
STS
-
YYZ
1 stop22h 14m
American Airlines
Deal found 3/5C$ 957
Tue 19/59:40 a.m.
YYZ
-
STS
1 stop13h 19m
Multiple Airlines
Thu 21/57:50 a.m.
STS
-
YYZ
2 stops14h 15m
Multiple Airlines
Deal found 30/4C$ 965
Thu 2/76:46 a.m.
YYZ
-
STS
1 stop8h 17m
American Airlines
Fri 10/712:43 p.m.
STS
-
YYZ
2 stops25h 56m
American Airlines
Deal found 30/4C$ 969
Wed 10/66:46 a.m.
YYZ
-
STS
1 stop8h 19m
American Airlines
Thu 2/74:12 p.m.
STS
-
YYZ
2 stops23h 28m
American Airlines
Deal found 2/5C$ 970
Thu 2/76:02 p.m.
YYZ
-
STS
2 stops21h 28m
American Airlines
Sat 11/74:12 p.m.
STS
-
YYZ
2 stops16h 47m
American Airlines
Deal found 30/4C$ 976
Sun 14/66:02 p.m.
YYZ
-
STS
2 stops21h 37m
American Airlines
Sat 27/61:09 p.m.
STS
-
YYZ
2 stops18h 49m
American Airlines
Deal found 2/5C$ 977

Find flight deals from Ontario to Santa Rosa

Keep the following information in mind while searching for Ontario to Santa Rosa flight deals. Data was last updated 4 May 2026.

Round-trip from

C$ 777

One-way from

C$ 359

Popular in

December

Cheapest in

November

Average price

C$ 512
15/6-17/6
  • 15/6-17/6
  • 3 total stops
  • 23h 35m total
  • Ontario to Santa Rosa
Search Deals
2/6
  • 2/6
  • 2 total stops
  • 14h 19m total
  • Ontario to Santa Rosa
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Santa Rosa 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 629,999 searches. Data last updated 4 May 2026.
Use the filters below to find and compare flights from Ontario to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 12/6

6:00 a.m.-3:50 p.m.

2 stops12h 50m

Santa Rosa Sonoma County

Sun 21/6

4:20 p.m.-10:30 p.m.

2 stops27h 10m

C$ 930

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 8/6

1:15 p.m.-12:05 p.m.

2 stops25h 50m

Santa Rosa Sonoma County

Fri 3/7

1:00 p.m.-10:18 a.m.

2 stops18h 18m

C$ 955

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 4/7

2:55 p.m.-12:03 p.m.

1 stop24h 08m

Santa Rosa Sonoma County

Fri 10/7

12:43 p.m.-6:40 p.m.

2 stops26h 57m

C$ 969
Quickest round-trip

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 15/7

6:46 a.m.-12:03 p.m.

1 stop8h 17m

Santa Rosa Sonoma County

Mon 3/8

12:43 p.m.-10:18 a.m.

2 stops18h 35m

C$ 970

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 12/6

6:46 a.m.-12:05 p.m.

1 stop8h 19m

Santa Rosa Sonoma County

Fri 3/7

1:00 p.m.-11:14 a.m.

2 stops19h 14m

C$ 970

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 16/7

6:19 p.m.-12:03 p.m.

2 stops20h 44m

Santa Rosa Sonoma County

Sun 2/8

4:12 p.m.-10:59 a.m.

2 stops15h 47m

C$ 977

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 23/5

6:46 a.m.-12:03 p.m.

1 stop8h 17m

Santa Rosa Sonoma County

Sat 30/5

12:43 p.m.-1:57 p.m.

1 stop22h 14m

C$ 1,008

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 23/5

4:55 p.m.-11:10 a.m.

2 stops21h 15m

Santa Rosa Sonoma County

Wed 27/5

7:00 a.m.-3:45 p.m.

2 stops29h 45m

C$ 1,015

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 19/5

9:40 a.m.-7:59 p.m.

1 stop13h 19m

Santa Rosa Sonoma County

Thu 21/5

12:05 p.m.-8:00 p.m.

1 stop28h 55m

C$ 1,060
Cheapest one-way
Quickest one-way

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 23/10

9:30 a.m.-3:47 p.m.

1 stop9h 17m

C$ 382

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/4

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from Ontario with our price prediction graph.
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 Ontario to Santa Rosa
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Santa Rosa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Santa Rosa from Ontario?

    Santa Rosa Sonoma County (STS) is the airport you will fly into if you book a flight from Ontario to Santa Rosa. It is only a 11.5 km journey from Sonoma County (STS) to Santa Rosa’s city centre.

  • How long is the flight from Region of Ontario to Santa Rosa?

    Airlines like American Airlines fly from Region of Ontario to Santa Rosa in about 12h 50m. The time it takes to get you to your destination can typically vary by up to . Region of Ontario and Santa Rosa are separated by a distance of 3621 km.

  • What are the most popular routes from Region of Ontario to Santa Rosa?

    When deciding which route to take from Region of Ontario to Santa Rosa consider Toronto Pearson Intl - Santa Rosa Sonoma County, London - Santa Rosa Sonoma County or Hamilton - Santa Rosa Sonoma County as they are the most popular.

  • Can I find deals for flights from Ontario to Santa Rosa that include hotel bookings?

    Yes. In addition to deals on Ontario to Santa Rosa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Santa Rosa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Santa Rosa.

  • Can I find deals for business class flights from Ontario to Santa Rosa?

    Yes. Cheapflights offers flight deals from Ontario to Santa Rosa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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