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Cheap flights from Ontario to San Francisco from C$ 335

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Francisco departing on 8/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:45 p.m. - 7:15 p.m.YYZ-STS
29h 30m2 stops
Alaska Airlines Logo
10:59 a.m. - 3:35 p.m.STS-YYZ
25h 36m2 stops
C$ 591Alaska Airlines
Find Deal
Tue, 9 Dec - Sat, 13 Dec
Alaska Airlines Logo
4:45 p.m. - 6:14 p.m.YYZ-STS
28h 29m2 stops
Alaska Airlines Logo
10:59 a.m. - 3:35 p.m.STS-YYZ
25h 36m2 stops
C$ 603Alaska Airlines
Find Deal
Mon, 8 Dec - Sat, 13 Dec
Alaska Airlines Logo
4:45 p.m. - 1:29 p.m.YYZ-STS
23h 44m1 stop
Alaska Airlines Logo
10:59 a.m. - 3:35 p.m.STS-YYZ
25h 36m2 stops
C$ 615Alaska Airlines
Find Deal
Tue, 9 Dec - Sat, 13 Dec
Alaska Airlines Logo
4:45 p.m. - 1:29 p.m.YYZ-STS
23h 44m1 stop
Alaska Airlines Logo
10:59 a.m. - 3:35 p.m.STS-YYZ
25h 36m2 stops
C$ 625Alaska Airlines
Find Deal
Mon, 8 Dec - Sat, 13 Dec
Alaska Airlines Logo
4:45 p.m. - 2:36 p.m.YYZ-STS
24h 51m2 stops
Alaska Airlines Logo
6:43 p.m. - 3:35 p.m.STS-YYZ
17h 52m2 stops
C$ 628Alaska Airlines
Find Deal
Tue, 9 Dec - Wed, 10 Dec
Alaska Airlines Logo
4:45 p.m. - 1:29 p.m.YYZ-STS
23h 44m1 stop
Alaska Airlines Logo
7:55 p.m. - 3:35 p.m.STS-YYZ
16h 40m1 stop
C$ 629Alaska Airlines
Find Deal
Tue, 9 Dec - Wed, 10 Dec
Alaska Airlines Logo
4:45 p.m. - 3:24 p.m.YYZ-STS
25h 39m2 stops
Alaska Airlines Logo
5:59 p.m. - 3:35 p.m.STS-YYZ
18h 36m2 stops
C$ 634Alaska Airlines
Find Deal
Fri, 12 Dec - Sat, 13 Dec
American Airlines Logo
5:10 p.m. - 12:27 p.m.YYZ-STS
22h 17m2 stops
American Airlines Logo
4:26 p.m. - 10:56 a.m.STS-YYZ
15h 30m2 stops
C$ 648American Airlines
Find Deal
Wed, 10 Dec - Thu, 11 Dec
Alaska Airlines Logo
4:45 p.m. - 7:15 p.m.YYZ-STS
29h 30m2 stops
Alaska Airlines Logo
7:55 p.m. - 3:35 p.m.STS-YYZ
16h 40m1 stop
C$ 653Alaska Airlines
Find Deal
Tue, 9 Dec - Sun, 14 Dec
American Airlines Logo
6:24 p.m. - 12:27 p.m.YYZ-STS
21h 03m2 stops
American Airlines Logo
4:26 p.m. - 9:49 a.m.STS-YYZ
14h 23m2 stops
C$ 655American Airlines
Find Deal
Mon, 8 Dec - Mon, 15 Dec

American Airlines flights from Region of Ontario to Santa Rosa

Our best American Airlines deals on Region of Ontario to Santa Rosa flight tickets
American Airlines
10 Dec
YYZ5:10 p.m.Toronto Pearson Intl
22h 17m
2 stops
STS12:27 p.m.Santa Rosa Sonoma County
11 Dec
STS4:26 p.m.Santa Rosa Sonoma County
15h 30m
2 stops
YYZ10:56 a.m.Toronto Pearson Intl
C$ 648
Find similar
American Airlines
8 Dec
YYZ6:24 p.m.Toronto Pearson Intl
21h 03m
2 stops
STS12:27 p.m.Santa Rosa Sonoma County
15 Dec
STS4:26 p.m.Santa Rosa Sonoma County
14h 23m
2 stops
YYZ9:49 a.m.Toronto Pearson Intl
C$ 655
Find similar
American Airlines
13 Dec
YYZ6:15 p.m.Toronto Pearson Intl
21h 12m
2 stops
STS12:27 p.m.Santa Rosa Sonoma County
14 Dec
STS4:26 p.m.Santa Rosa Sonoma County
14h 51m
2 stops
YYZ10:17 a.m.Toronto Pearson Intl
C$ 698
Find similar

Alaska Airlines flights from Region of Ontario to Santa Rosa

Our best Alaska Airlines deals on Region of Ontario to Santa Rosa flight tickets
Alaska Airlines
9 Dec
YYZ4:45 p.m.Toronto Pearson Intl
29h 30m
2 stops
STS7:15 p.m.Santa Rosa Sonoma County
13 Dec
STS10:59 a.m.Santa Rosa Sonoma County
25h 36m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
C$ 591
Find similar
Alaska Airlines
8 Dec
YYZ4:45 p.m.Toronto Pearson Intl
28h 29m
2 stops
STS6:14 p.m.Santa Rosa Sonoma County
13 Dec
STS10:59 a.m.Santa Rosa Sonoma County
25h 36m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
C$ 603
Find similar
Alaska Airlines
9 Dec
YYZ4:45 p.m.Toronto Pearson Intl
23h 44m
1 stop
STS1:29 p.m.Santa Rosa Sonoma County
13 Dec
STS10:59 a.m.Santa Rosa Sonoma County
25h 36m
2 stops
YYZ3:35 p.m.Toronto Pearson Intl
C$ 615
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of 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, momondo users made 96,600 searches. Data last updated 5 November 2025.
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

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-7:15 p.m.

2 stops29h 30m

Santa Rosa Sonoma County

Sat 13/12

10:59 a.m.-3:35 p.m.

2 stops25h 36m

C$ 591

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 8/12

4:45 p.m.-6:14 p.m.

2 stops28h 29m

Santa Rosa Sonoma County

Sat 13/12

10:59 a.m.-3:35 p.m.

2 stops25h 36m

C$ 603

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-1:29 p.m.

1 stop23h 44m

Santa Rosa Sonoma County

Sat 13/12

10:59 a.m.-3:35 p.m.

2 stops25h 36m

C$ 615

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 8/12

4:45 p.m.-1:29 p.m.

1 stop23h 44m

Santa Rosa Sonoma County

Sat 13/12

10:59 a.m.-3:35 p.m.

2 stops25h 36m

C$ 625

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-2:36 p.m.

2 stops24h 51m

Santa Rosa Sonoma County

Wed 10/12

6:43 p.m.-3:35 p.m.

2 stops17h 52m

C$ 628

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-1:29 p.m.

1 stop23h 44m

Santa Rosa Sonoma County

Wed 10/12

7:55 p.m.-3:35 p.m.

1 stop16h 40m

C$ 629

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 12/12

4:45 p.m.-3:24 p.m.

2 stops25h 39m

Santa Rosa Sonoma County

Sat 13/12

5:59 p.m.-3:35 p.m.

2 stops18h 36m

C$ 634

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 10/12

5:10 p.m.-12:27 p.m.

2 stops22h 17m

Santa Rosa Sonoma County

Thu 11/12

4:26 p.m.-10:56 a.m.

2 stops15h 30m

C$ 648

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 9/12

4:45 p.m.-7:15 p.m.

2 stops29h 30m

Santa Rosa Sonoma County

Sun 14/12

7:55 p.m.-3:35 p.m.

1 stop16h 40m

C$ 653

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 8/12

6:24 p.m.-12:27 p.m.

2 stops21h 03m

Santa Rosa Sonoma County

Mon 15/12

4:26 p.m.-9:49 a.m.

2 stops14h 23m

C$ 655

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Region of Ontario to Santa Rosa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest time of day to depart on your flight to Santa Rosa?

Flying to Santa Rosa from Region of Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 737 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Santa Rosa, so prices are often more expensive at around C$ 1,188 per ticket.

Cheap Region of Ontario to Santa Rosa flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Santa Rosa

Direct flights

None
There are no direct flights from Region of Ontario to Santa Rosa. There are no popular flight routes from Region of Ontario to Santa Rosa.
Search flight deals

  • When did momondo last update prices for flights from Ontario to Santa Rosa Sonoma County Airport?

    Prices for flights from Ontario to Santa Rosa Sonoma County Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Ontario to Santa Rosa Sonoma County Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to Santa Rosa Sonoma County Airport.

  • What documentation or ID do you need to fly to Santa Rosa Sonoma County Airport?

    The travel and health documents you'll need for your trip to Santa Rosa Sonoma County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santa Rosa Sonoma County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Little River
Mendocino

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Santa Rosa?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Santa Rosa. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Santa Rosa with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Santa Rosa from Ontario with this policy.

How can momondo help me find flights from Ontario to Santa Rosa?

Once all potential Ontario to Santa Rosa flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Santa Rosa right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Santa Rosa now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santa Rosa and let you know when they change.

An easier way to manage your Santa Rosa trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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