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Cheap flights from Santa Rosa to Ontario from C$ 295

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
STS — YYZ
3 Aug — 10 Aug1
1 adult

Cheap 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 29 July 2025.

Round-trip from

C$ 646

One-way from

C$ 295

Popular in

December

Cheapest in

April

Average price

C$ 650
Alaska Airlines
  • Alaska Airlines
  • 23/9-4/10
  • 4 total stops
  • 42h 31m total
  • Santa Rosa to Ontario
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 8/10
  • 2 total stops
  • 29h 00m total
  • Santa Rosa to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Santa Rosa to Ontario

Cheapest flights from Santa Rosa to Ontario
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 29 July 2025.

Tue 23/93:07 p.m.STS - YYZ
2 stops20h 53mAlaska Airlines
Sat 4/104:45 p.m.YYZ - STS
2 stops21h 38mAlaska Airlines
Deal found 28/7C$ 646
Mon 25/812:17 p.m.STS - YYZ
1 stop7h 28mAmerican Airlines
Sat 30/85:19 p.m.YYZ - STS
1 stop21h 17mAmerican Airlines
Deal found 29/7C$ 704
Tue 9/94:19 p.m.STS - YUL
2 stops38h 39mAmerican Airlines
Fri 19/912:31 p.m.YUL - STS
2 stops26h 58mAmerican Airlines
Deal found 28/7C$ 953

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 629,999 searches. Data last updated 29 July 2025.
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 RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Tue 23/9

3:07 p.m.-3:00 p.m.

2 stops20h 53m

Toronto Pearson Intl

Sat 4/10

4:45 p.m.-11:23 a.m.

2 stops21h 38m

C$ 646

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Mon 25/8

12:17 p.m.-10:45 p.m.

1 stop7h 28m

Toronto Pearson Intl

Sat 30/8

5:19 p.m.-11:36 a.m.

1 stop21h 17m

C$ 704

Santa RosaMontreal

STS - YUL

STSYUL

Santa Rosa Sonoma County

Tue 9/9

4:19 p.m.-9:58 a.m.

2 stops38h 39m

Montreal Pierre Elliott Trudeau Intl

Fri 19/9

12:31 p.m.-12:29 p.m.

2 stops26h 58m

C$ 953

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Wed 8/10

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

2 stops29h 00m

C$ 295

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Sat 23/8

4:17 p.m.-10:16 a.m.

2 stops14h 59m

C$ 303

Santa RosaMontreal

STS - YUL

STSYUL

Santa Rosa Sonoma County

Tue 5/8

4:16 p.m.-12:16 p.m.

2 stops17h 00m

C$ 742

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

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.
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

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

Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Region of Ontario (average of C$ 167). Flying from Santa Rosa to Region of Ontario in July is currently the most expensive (average of C$ 258). 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.

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 29 July 2025.
Check out reviews from past customers who have flown with Alaska Airlines and American Airlines from Santa Rosa to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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.

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

    For a flight from Santa Rosa to Ontario, you will be flying from Sonoma County. Santa Rosa Sonoma County (STS) is just 11.5 km from the centre of the city.

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

    The most popular route from Santa Rosa to Region of Ontario is Santa Rosa Sonoma County - Toronto Region of Waterloo Intl. You may also consider Santa Rosa Sonoma County - Sudbury or Santa Rosa Sonoma County - Montreal Pierre Elliott Trudeau Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Santa Rosa to Ontario 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 Santa Rosa to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Santa Rosa to Region of Ontario (average of C$ 167). Flying from Santa Rosa to Region of Ontario in July is currently the most expensive (average of C$ 258). 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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How does Cheapflights help users find flights from Santa Rosa to Ontario?

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