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Cheap flights from Santa Rosa to Ontario from C$ 466

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
STS — YYZ
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Santa Rosa to Ontario

Enter your travel dates to find the best prices.

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 10 June 2026.

Sun 20/94:21 p.m.
STS
-
YYZ
2 stops15h 38m
American Airlines
Sun 27/96:46 a.m.
YYZ
-
STS
1 stop8h 23m
American Airlines
Deal found 7/6C$ 891
Wed 1/712:45 p.m.
STS
-
YYZ
2 stops20h 52m
American Airlines
Thu 2/73:45 p.m.
YYZ
-
STS
2 stops23h 18m
American Airlines
Deal found 8/6C$ 908
Tue 3/117:00 a.m.
STS
-
YYZ
2 stops29h 35m
Alaska Airlines
Sat 7/114:45 p.m.
YYZ
-
STS
1 stop8h 12m
Alaska Airlines
Deal found 9/6C$ 927
Sat 25/71:06 p.m.
STS
-
YYZ
2 stops14h 49m
Multiple Airlines
Sat 1/87:00 a.m.
YYZ
-
STS
1 stop13h 16m
Multiple Airlines
Deal found 9/6C$ 940
Tue 30/61:09 p.m.
STS
-
YYZ
2 stops25h 12m
American Airlines
Sat 4/74:18 p.m.
YYZ
-
STS
2 stops22h 45m
American Airlines
Deal found 8/6C$ 959
Sun 26/712:43 p.m.
STS
-
YYZ
1 stop22h 14m
American Airlines
Tue 4/86:46 a.m.
YYZ
-
STS
2 stops11h 56m
American Airlines
Deal found 6/6C$ 961
Sun 20/97:10 a.m.
STS
-
YYZ
1 stop11h 50m
Multiple Airlines
Sun 27/911:05 a.m.
YYZ
-
STS
1 stop10h 13m
Multiple Airlines
Deal found 7/6C$ 973
Mon 17/812:58 p.m.
STS
-
YYZ
2 stops22h 35m
American Airlines
Tue 18/86:28 p.m.
YYZ
-
STS
1 stop20h 41m
American Airlines
Deal found 6/6C$ 977
Sun 5/71:06 p.m.
STS
-
YYZ
2 stops32h 59m
Multiple Airlines
Sat 11/77:00 a.m.
YYZ
-
STS
1 stop13h 16m
Multiple Airlines
Deal found 6/6C$ 984
Sat 15/812:39 p.m.
STS
-
YYZ
1 stop22h 20m
American Airlines
Wed 19/86:46 a.m.
YYZ
-
STS
1 stop8h 23m
American Airlines
Deal found 6/6C$ 998
Thu 3/94:08 p.m.
STS
-
YUL
2 stops16h 35m
American Airlines
Tue 8/93:45 p.m.
YUL
-
STS
1 stop23h 24m
American Airlines
Deal found 9/6C$ 1,139
Tue 21/712:43 p.m.
STS
-
YUL
2 stops18h 05m
American Airlines
Tue 28/73:48 p.m.
YUL
-
STS
1 stop23h 15m
American Airlines
Deal found 5/6C$ 1,141

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 10 June 2026.

Round-trip from

C$ 891

One-way from

C$ 466

Popular in

December

Cheapest in

January

Average price

C$ 763
American Airlines
  • American Airlines
  • 20/9-27/9
  • 3 total stops
  • 24h 01m total
  • Santa Rosa to Ontario
Search Deals
American Airlines
  • American Airlines
  • 3/7
  • 1 total stop
  • 22h 11m total
  • Santa Rosa to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 10 June 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

Price

Cheapest round-trip

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Sat 25/7

1:06 p.m.-6:55 a.m.

2 stops14h 49m

Toronto Pearson Intl

Sat 1/8

7:00 a.m.-5:16 p.m.

1 stop13h 16m

C$ 940
Quickest round-trip

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Tue 3/11

5:20 p.m.-3:35 p.m.

1 stop19h 15m

Toronto Pearson Intl

Sat 7/11

4:45 p.m.-9:57 p.m.

1 stop8h 12m

C$ 955

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Mon 29/6

4:20 p.m.-3:42 p.m.

2 stops20h 22m

Toronto Pearson Intl

Thu 2/7

5:25 p.m.-12:03 p.m.

2 stops21h 38m

C$ 959

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Tue 30/6

1:09 p.m.-5:21 p.m.

2 stops25h 12m

Toronto Pearson Intl

Sat 4/7

4:18 p.m.-12:03 p.m.

2 stops22h 45m

C$ 959

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Wed 12/8

4:08 p.m.-10:17 a.m.

2 stops15h 09m

Toronto Pearson Intl

Tue 18/8

2:55 p.m.-12:09 p.m.

1 stop24h 14m

C$ 1,011

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Sat 15/8

12:39 p.m.-1:59 p.m.

1 stop22h 20m

Toronto Pearson Intl

Sat 22/8

6:28 p.m.-12:28 p.m.

2 stops21h 00m

C$ 1,011

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Fri 4/9

12:58 p.m.-10:59 a.m.

2 stops19h 01m

Toronto Pearson Intl

Mon 7/9

6:21 p.m.-12:09 p.m.

2 stops20h 48m

C$ 1,019

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Sat 5/9

4:08 p.m.-10:17 a.m.

2 stops15h 09m

Toronto Pearson Intl

Tue 8/9

5:25 p.m.-12:26 p.m.

2 stops22h 01m

C$ 1,019

Santa RosaToronto

STS - YYZ

STSYYZ

Santa Rosa Sonoma County

Wed 2/9

12:58 p.m.-10:59 a.m.

2 stops19h 01m

Toronto Pearson Intl

Sun 6/9

6:00 a.m.-3:47 p.m.

2 stops12h 47m

C$ 1,019

Santa RosaMontreal

STS - YUL

STSYUL

Santa Rosa Sonoma County

Tue 21/7

12:43 p.m.-9:48 a.m.

2 stops18h 05m

Montreal Pierre Elliott Trudeau Intl

Tue 28/7

3:48 p.m.-12:03 p.m.

1 stop23h 15m

C$ 1,141

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 41 resultsSorted by cheapest first
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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
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 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.

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

    A quick flight from Santa Rosa to Region of Ontario can take about 19h 15m. Alaska Airlines provides one of the quickest options available for as low as C$ 955. The distance between Santa Rosa and Region of Ontario is about 3621 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

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Alternative routes for Santa Rosa to Ontario

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

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Yes, Cheapflights offers price alerts on Santa Rosa to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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