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Cheap flights from Ontario to San Francisco from C$ 294

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 28/4. 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. - 6:01 p.m.
YYZ
-
STS
28h 16m
1 stop
Alaska Airlines Logo
7:05 a.m. - 3:45 p.m.
STS
-
YYZ
29h 40m
2 stops
C$ 550Alaska Airlines
Tue, 24 Mar - Tue, 21 Apr
Alaska Airlines Logo
4:45 p.m. - 6:01 p.m.
YYZ
-
STS
28h 16m
1 stop
Alaska Airlines Logo
7:05 a.m. - 3:45 p.m.
STS
-
YYZ
29h 40m
2 stops
C$ 558Alaska Airlines
Wed, 25 Mar - Tue, 21 Apr
Alaska Airlines Logo
4:45 p.m. - 6:01 p.m.
YYZ
-
STS
28h 16m
1 stop
Alaska Airlines Logo
8:20 a.m. - 3:45 p.m.
STS
-
YYZ
28h 25m
2 stops
C$ 562Alaska Airlines
Tue, 24 Mar - Wed, 22 Apr
Alaska Airlines Logo
4:45 p.m. - 10:11 a.m.
YYZ
-
STS
20h 26m
2 stops
Alaska Airlines Logo
7:57 p.m. - 3:35 p.m.
STS
-
YYZ
16h 38m
1 stop
C$ 569Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Alaska Airlines Logo
4:45 p.m. - 10:11 a.m.
YYZ
-
STS
20h 26m
2 stops
Alaska Airlines Logo
7:57 p.m. - 3:35 p.m.
STS
-
YYZ
16h 38m
1 stop
C$ 570Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Alaska Airlines Logo
4:45 p.m. - 11:50 p.m.
YYZ
-
STS
10h 05m
1 stop
Alaska Airlines Logo
7:57 p.m. - 3:35 p.m.
STS
-
YYZ
16h 38m
1 stop
C$ 572Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Alaska Airlines Logo
4:45 p.m. - 6:01 p.m.
YYZ
-
STS
28h 16m
1 stop
Alaska Airlines Logo
6:53 p.m. - 3:45 p.m.
STS
-
YYZ
17h 52m
1 stop
C$ 573Alaska Airlines
Wed, 25 Mar - Tue, 21 Apr
Alaska Airlines Logo
4:45 p.m. - 10:11 a.m.
YYZ
-
STS
20h 26m
2 stops
Alaska Airlines Logo
7:57 p.m. - 3:35 p.m.
STS
-
YYZ
16h 38m
1 stop
C$ 576Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar
Multiple Airlines Logo
8:00 a.m. - 11:59 p.m.
YYZ
-
STS
18h 59m
2 stops
Multiple Airlines Logo
12:10 p.m. - 12:23 p.m.
STS
-
YYZ
21h 13m
2 stops
C$ 577Multiple Airlines
Thu, 9 Apr - Thu, 16 Apr
Alaska Airlines Logo
4:45 p.m. - 11:50 p.m.
YYZ
-
STS
10h 05m
1 stop
Alaska Airlines Logo
7:57 p.m. - 3:35 p.m.
STS
-
YYZ
16h 38m
1 stop
C$ 584Alaska Airlines
Fri, 27 Feb - Mon, 2 Mar

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
21 Mar
YYZ4:08 p.m.Toronto Pearson Intl
26h 45m
2 stops
STS3:53 p.m.Santa Rosa Sonoma County
18 Apr
STS4:23 p.m.Santa Rosa Sonoma County
15h 06m
2 stops
YYZ10:29 a.m.Toronto Pearson Intl
C$ 706
American Airlines
22 Mar
YYZ7:10 p.m.Toronto Pearson Intl
20h 16m
2 stops
STS12:26 p.m.Santa Rosa Sonoma County
20 Apr
STS4:23 p.m.Santa Rosa Sonoma County
15h 06m
2 stops
YYZ10:29 a.m.Toronto Pearson Intl
C$ 758
American Airlines
27 Mar
YYZ7:10 p.m.Toronto Pearson Intl
20h 16m
2 stops
STS12:26 p.m.Santa Rosa Sonoma County
24 Apr
STS4:23 p.m.Santa Rosa Sonoma County
15h 50m
2 stops
YYZ11:13 a.m.Toronto Pearson Intl
C$ 808

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
24 Mar
YYZ4:45 p.m.Toronto Pearson Intl
28h 16m
1 stop
STS6:01 p.m.Santa Rosa Sonoma County
21 Apr
STS7:05 a.m.Santa Rosa Sonoma County
29h 40m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 550
Alaska Airlines
25 Mar
YYZ4:45 p.m.Toronto Pearson Intl
28h 16m
1 stop
STS6:01 p.m.Santa Rosa Sonoma County
21 Apr
STS7:05 a.m.Santa Rosa Sonoma County
29h 40m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 558
Alaska Airlines
24 Mar
YYZ4:45 p.m.Toronto Pearson Intl
28h 16m
1 stop
STS6:01 p.m.Santa Rosa Sonoma County
22 Apr
STS8:20 a.m.Santa Rosa Sonoma County
28h 25m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 562

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 6 February 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

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 24/3

4:45 p.m.-6:01 p.m.

1 stop28h 16m

Santa Rosa Sonoma County

Tue 21/4

7:05 a.m.-3:45 p.m.

2 stops29h 40m

C$ 550

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 25/3

4:45 p.m.-6:01 p.m.

1 stop28h 16m

Santa Rosa Sonoma County

Tue 21/4

7:05 a.m.-3:45 p.m.

2 stops29h 40m

C$ 558

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 24/3

4:45 p.m.-6:01 p.m.

1 stop28h 16m

Santa Rosa Sonoma County

Wed 22/4

8:20 a.m.-3:45 p.m.

2 stops28h 25m

C$ 562

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-10:11 a.m.

2 stops20h 26m

Santa Rosa Sonoma County

Mon 2/3

7:57 p.m.-3:35 p.m.

1 stop16h 38m

C$ 569

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-10:11 a.m.

2 stops20h 26m

Santa Rosa Sonoma County

Mon 2/3

7:57 p.m.-3:35 p.m.

1 stop16h 38m

C$ 570

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-11:50 p.m.

1 stop10h 05m

Santa Rosa Sonoma County

Mon 2/3

7:57 p.m.-3:35 p.m.

1 stop16h 38m

C$ 572

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 25/3

4:45 p.m.-6:01 p.m.

1 stop28h 16m

Santa Rosa Sonoma County

Tue 21/4

6:53 p.m.-3:45 p.m.

1 stop17h 52m

C$ 573

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-10:11 a.m.

2 stops20h 26m

Santa Rosa Sonoma County

Mon 2/3

7:57 p.m.-3:35 p.m.

1 stop16h 38m

C$ 576

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 9/4

8:00 a.m.-11:59 p.m.

2 stops18h 59m

Santa Rosa Sonoma County

Thu 16/4

12:10 p.m.-12:23 p.m.

2 stops21h 13m

C$ 577

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-11:50 p.m.

1 stop10h 05m

Santa Rosa Sonoma County

Mon 2/3

7:57 p.m.-3:35 p.m.

1 stop16h 38m

C$ 584

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 airline that flies from Ontario to Santa Rosa Sonoma County?

Alaska Airlines is the most popular carrier operating from Ontario to Santa Rosa Sonoma County

Which airlines fly to Santa Rosa?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Santa Rosa from Region of Ontario according to our data. Air Canada is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Santa Rosa. Keep in mind that there are 9 different airlines that fly to Santa Rosa on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time

11h 51m

Direct flights

None
The fastest flight from Region of Ontario to Santa Rosa takes 11h 51m
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.

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