Find flights
When to book
FAQs

Cheap flights from Ontario to Santa Rosa from C$ 396

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STS
8 Sep — 15 Sep1
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 9 August 2026.

Mon 7/98:35 p.m. -
1 stop23h 04m
Mon 14/91:40 p.m. -
1 stop27h 29m
Deal found 8/8C$ 606
Fri 25/98:35 p.m. -
1 stop23h 04m
Wed 30/91:40 p.m. -
2 stops13h 05m
Deal found 8/8C$ 649
Mon 21/97:00 a.m. -
2 stops12h 39m
Mon 28/91:40 p.m. -
1 stop13h 59m
Deal found 6/8C$ 663
Sat 24/106:30 a.m. -
2 stops12h 35m
Tue 27/1011:21 a.m. -
2 stops8h 54m
Deal found 5/8C$ 720
Fri 25/96:00 a.m. -
2 stops12h 50m
Wed 30/94:21 p.m. -
2 stops15h 38m
Deal found 8/8C$ 832
Sat 24/104:55 p.m. -
2 stops21h 22m
Tue 27/105:06 p.m. -
1 stop19h 59m
Deal found 3/8C$ 907
Wed 16/96:10 a.m. -
2 stops30h 44m
Fri 18/96:47 p.m. -
2 stops31h 33m
Deal found 6/8C$ 934
Mon 7/96:10 p.m. -
2 stops30h 49m
Mon 14/97:03 a.m. -
2 stops31h 12m
Deal found 8/8C$ 1,169

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 9 August 2026.

Round-trip from

C$ 649

One-way from

C$ 396

Popular in

July

Cheapest in

November

Average price

C$ 663
25/9-30/9
  • 25/9-30/9
  • 3 total stops
  • 36h 09m total
  • Ontario to Santa Rosa
Search Deals
American Airlines
  • American Airlines
  • 31/8
  • 2 total stops
  • 19h 42m total
  • Ontario to Santa Rosa
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 9 August 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 Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Mon 7/9

8:35 p.m.-4:39 p.m.

1 stop23h 04m

Santa Rosa Sonoma County

Mon 14/9

1:40 p.m.-8:09 p.m.

1 stop27h 29m

C$ 606

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Fri 25/9

8:35 p.m.-4:39 p.m.

1 stop23h 04m

Santa Rosa Sonoma County

Wed 30/9

1:40 p.m.-5:45 a.m.

2 stops13h 05m

C$ 649

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Mon 21/9

7:00 a.m.-4:39 p.m.

2 stops12h 39m

Santa Rosa Sonoma County

Mon 28/9

1:40 p.m.-6:39 a.m.

1 stop13h 59m

C$ 663
Quickest round-trip

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Sat 24/10

6:30 a.m.-4:05 p.m.

2 stops12h 35m

Santa Rosa Sonoma County

Tue 27/10

11:21 a.m.-11:15 p.m.

2 stops8h 54m

C$ 720

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Thu 28/1

6:15 a.m.-9:48 p.m.

2 stops18h 33m

Santa Rosa Sonoma County

Fri 5/2

7:00 a.m.-11:04 p.m.

2 stops13h 04m

C$ 851

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Sat 24/10

4:55 p.m.-11:17 a.m.

2 stops21h 22m

Santa Rosa Sonoma County

Tue 27/10

5:06 p.m.-4:05 p.m.

1 stop19h 59m

C$ 907

LondonSanta Rosa

YXU London - STS Santa Rosa Sonoma County

YXUSTS

London

Wed 16/9

6:10 a.m.-9:54 a.m.

2 stops30h 44m

Santa Rosa Sonoma County

Fri 18/9

6:47 p.m.-5:20 a.m.

2 stops31h 33m

C$ 934

HamiltonSanta Rosa

YHM Hamilton - STS Santa Rosa Sonoma County

YHMSTS

Hamilton

Mon 7/9

6:10 p.m.-9:59 p.m.

2 stops30h 49m

Santa Rosa Sonoma County

Mon 14/9

7:03 a.m.-5:15 p.m.

2 stops31h 12m

C$ 1,169
Cheapest one-way

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Wed 14/10

6:00 a.m.-4:05 p.m.

2 stops13h 05m

C$ 404
Quickest one-way

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Tue 22/9

4:55 p.m.-9:59 p.m.

1 stop8h 04m

C$ 404

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 Delta fly from Region of Ontario to Santa Rosa in about 12h 35m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.
Vancouver Intl to Los Angeles flights
Vancouver Intl to Las Vegas flights
Pearson Intl to Los Angeles flights
Pearson Intl to Las Vegas flights
Vancouver Intl to Ontario flights
Vancouver Intl to San Francisco flights
Abbotsford to Los Angeles flights
Pearson Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Calgary to Los Angeles flights
Vancouver Intl to San Diego flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pearson Intl to San Diego flights
Abbotsford to Las Vegas flights
Pearson Intl to Ontario flights
Toronto Island to Las Vegas flights
Calgary to Las Vegas flights
Edmonton to Las Vegas flights
Toronto Island to Los Angeles flights
Vancouver Intl to Palm Springs flights
Edmonton to Los Angeles flights
Vancouver Intl to Santa Ana flights
Toronto Island to San Francisco flights
Pierre Elliott Trudeau Intl to San Francisco flights
Calgary to San Francisco flights
Calgary to Ontario flights
Abbotsford to San Francisco flights
Hamilton to Las Vegas flights
Winnipeg to Los Angeles flights
Hamilton to Los Angeles flights
Edmonton to San Francisco flights
Region of Waterloo Intl to Los Angeles flights
Hamilton to San Francisco flights
Winnipeg to Las Vegas flights
Pierre Elliott Trudeau Intl to Ontario flights
Region of Waterloo Intl to San Francisco flights
Pierre Elliott Trudeau Intl to San Diego flights
Ottawa to Las Vegas flights
Region of Waterloo Intl to Las Vegas flights
Toronto Island to San Diego flights
Vancouver Intl to Sacramento flights
Abbotsford to San Diego flights
Saskatoon to Las Vegas flights
Abbotsford to Ontario flights
Pearson Intl to San Jose flights
Calgary to San Diego flights
Abbotsford to Palm Springs flights
Pearson Intl to Santa Ana flights
Winnipeg to San Francisco flights
Edmonton to Ontario flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Santa Rosa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Santa Rosa?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Santa Rosa for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to Santa Rosa with no change fees?

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.

Can Cheapflights notify me if prices for flights from Ontario to Santa Rosa become cheaper?

Of course! You can now track prices for flights from Ontario to Santa Rosa and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.