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Cheap flights from Ontario to Santa Rosa from C$ 330

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STS
14 Jan — 21 Jan1
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 15 December 2025.

Thu 25/1212:34 p.m.YYZ - STS
2 stops26h 55mAmerican Airlines
Wed 31/1212:59 p.m.STS - YYZ
2 stops18h 57mAmerican Airlines
Deal found 14/12C$ 969
Thu 25/1212:34 p.m.YYZ - STS
2 stops26h 55mAmerican Airlines
Sun 4/14:21 p.m.STS - YYZ
2 stops15h 35mAmerican Airlines
Deal found 14/12C$ 1,026
Mon 22/127:10 p.m.YYZ - STS
2 stops23h 41mAmerican Airlines
Sun 4/112:59 p.m.STS - YYZ
2 stops25h 45mAmerican Airlines
Deal found 14/12C$ 1,034
Sun 14/125:11 p.m.YYZ - STS
2 stops22h 16mAmerican Airlines
Wed 31/1212:59 p.m.STS - YYZ
2 stops18h 17mAmerican Airlines
Deal found 14/12C$ 1,063
Thu 25/127:30 a.m.YYZ - STS
2 stops31h 59mAmerican Airlines
Fri 2/112:59 p.m.STS - YYZ
2 stops18h 17mAmerican Airlines
Deal found 14/12C$ 1,085
Mon 22/127:10 p.m.YYZ - STS
2 stops23h 41mAmerican Airlines
Thu 1/112:59 p.m.STS - YYZ
2 stops21h 12mAmerican Airlines
Deal found 14/12C$ 1,095
Sun 14/126:24 p.m.YYZ - STS
2 stops21h 03mAmerican Airlines
Tue 30/124:21 p.m.STS - YYZ
2 stops16h 30mAmerican Airlines
Deal found 14/12C$ 1,126
Tue 23/126:10 a.m.YYZ - STS
2 stops12h 41mAmerican Airlines
Sun 4/112:59 p.m.STS - YYZ
2 stops25h 45mAmerican Airlines
Deal found 14/12C$ 1,139
Mon 22/126:23 p.m.YYZ - STS
2 stops24h 28mAmerican Airlines
Wed 31/1212:59 p.m.STS - YYZ
2 stops18h 17mAmerican Airlines
Deal found 14/12C$ 1,147
Mon 22/125:14 p.m.YYZ - STS
2 stops25h 37mAmerican Airlines
Tue 30/124:21 p.m.STS - YYZ
2 stops20h 58mAmerican Airlines
Deal found 14/12C$ 1,199
Tue 23/126:10 a.m.YYZ - STS
2 stops12h 41mAmerican Airlines
Wed 31/1212:59 p.m.STS - YYZ
2 stops18h 17mAmerican Airlines
Deal found 14/12C$ 1,252

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 15 December 2025.

Round-trip from

C$ 599

One-way from

C$ 330

Popular in

December

Cheapest in

April

Average price

C$ 661
Alaska Airlines
  • Alaska Airlines
  • 14/4-15/4
  • 3 total stops
  • 37h 41m total
  • Ontario to Santa Rosa
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/1
  • 1 total stop
  • 10h 14m total
  • Ontario to Santa Rosa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 15 December 2025.
Use the filters below to find and compare flights from Ontario to Santa Rosa that are best for you.

Fly from

Ontario

Fly to

Santa Rosa

Route

Depart

Return

Price

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 14/4

4:45 p.m.-9:51 p.m.

1 stop8h 06m

Santa Rosa Sonoma County

Wed 15/4

7:00 a.m.-3:35 p.m.

2 stops29h 35m

C$ 599

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sun 8/3

4:45 p.m.-9:14 a.m.

2 stops19h 29m

Santa Rosa Sonoma County

Sun 15/3

8:00 a.m.-3:35 p.m.

2 stops28h 35m

C$ 603

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 8/1

4:45 p.m.-11:59 p.m.

1 stop10h 14m

Santa Rosa Sonoma County

Mon 23/3

1:22 p.m.-3:35 p.m.

2 stops23h 13m

C$ 610

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 8/1

4:45 p.m.-11:59 p.m.

1 stop10h 14m

Santa Rosa Sonoma County

Wed 25/3

1:22 p.m.-3:35 p.m.

2 stops23h 13m

C$ 617

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 9/1

4:45 p.m.-11:59 p.m.

1 stop10h 14m

Santa Rosa Sonoma County

Tue 24/3

2:02 p.m.-3:35 p.m.

2 stops22h 33m

C$ 643

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 28/4

4:45 p.m.-9:51 p.m.

1 stop8h 06m

C$ 330

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 22/4

4:45 p.m.-9:51 p.m.

1 stop8h 06m

C$ 330

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 8/1

4:45 p.m.-11:59 p.m.

1 stop10h 14m

C$ 330

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 28/4

5:30 p.m.-3:47 p.m.

2 stops25h 17m

C$ 365

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 23/4

6:25 p.m.-3:47 p.m.

2 stops24h 22m

C$ 365

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/12

Showing 1-10 of 17 results
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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

What is the cheapest month to book a flight from Region of Ontario to Santa Rosa?

Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Santa Rosa (average of C$ 198). Flying from Region of Ontario to Santa Rosa in January is currently the most expensive (average of C$ 333). 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.

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 Alaska Airlines fly from Region of Ontario to Santa Rosa in about 8h 06m. 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.

  • What is the cheapest month to book a flight from Region of Ontario to Santa Rosa?

    Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Santa Rosa (average of C$ 198). Flying from Region of Ontario to Santa Rosa in January is currently the most expensive (average of C$ 333). 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.

See more FAQs

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Alternative routes for Ontario to Santa Rosa

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How does Cheapflights help users find flights from Ontario to Santa Rosa?

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Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Santa Rosa, users can toggle the no change fees filter when performing a flight search.

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