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Cheap flights from Ontario to San Francisco from C$ 413

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 13/8. 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.
American Airlines Logo
6:46 a.m. - 12:12 p.m.
YYZ
-
STS
8h 26m
1 stop
American Airlines Logo
4:21 p.m. - 10:45 a.m.
STS
-
YYZ
15h 24m
2 stops
C$ 828American Airlines
Wed, 16 Sep - Mon, 21 Sep
American Airlines Logo
6:46 a.m. - 3:47 p.m.
YYZ
-
STS
12h 01m
2 stops
American Airlines Logo
4:21 p.m. - 10:45 a.m.
STS
-
YYZ
15h 24m
2 stops
C$ 835American Airlines
Wed, 16 Sep - Mon, 21 Sep
American Airlines Logo
6:46 a.m. - 12:05 p.m.
YYZ
-
STS
8h 19m
1 stop
American Airlines Logo
4:20 p.m. - 10:58 a.m.
STS
-
YYZ
15h 38m
2 stops
C$ 935American Airlines
Sun, 14 Jun - Mon, 22 Jun
Alaska Airlines Logo
4:55 p.m. - 12:46 p.m.
YYZ
-
STS
22h 51m
1 stop
Alaska Airlines Logo
5:31 p.m. - 3:45 p.m.
STS
-
YYZ
19h 14m
1 stop
C$ 936Alaska Airlines
Wed, 16 Sep - Mon, 21 Sep
American Airlines Logo
6:26 p.m. - 12:03 p.m.
YYZ
-
STS
20h 37m
2 stops
American Airlines Logo
4:20 p.m. - 12:35 p.m.
STS
-
YYZ
17h 15m
2 stops
C$ 940American Airlines
Tue, 2 Jun - Wed, 3 Jun
American Airlines Logo
6:26 p.m. - 12:03 p.m.
YYZ
-
STS
20h 37m
2 stops
American Airlines Logo
12:45 p.m. - 10:15 a.m.
STS
-
YYZ
18h 30m
2 stops
C$ 951American Airlines
Tue, 2 Jun - Fri, 5 Jun
American Airlines Logo
6:28 p.m. - 12:09 p.m.
YYZ
-
STS
20h 41m
1 stop
American Airlines Logo
4:08 p.m. - 10:59 a.m.
STS
-
YYZ
15h 51m
2 stops
C$ 957American Airlines
Mon, 24 Aug - Tue, 25 Aug
American Airlines Logo
2:55 p.m. - 12:03 p.m.
YYZ
-
STS
24h 08m
1 stop
American Airlines Logo
4:20 p.m. - 12:35 p.m.
STS
-
YYZ
17h 15m
2 stops
C$ 961American Airlines
Sun, 31 May - Wed, 3 Jun
American Airlines Logo
6:46 a.m. - 3:42 p.m.
YYZ
-
STS
11h 56m
2 stops
American Airlines Logo
1:00 p.m. - 10:59 a.m.
STS
-
YYZ
18h 59m
2 stops
C$ 964American Airlines
Fri, 3 Jul - Sun, 5 Jul
American Airlines Logo
6:46 a.m. - 12:09 p.m.
YYZ
-
STS
8h 23m
1 stop
American Airlines Logo
4:08 p.m. - 10:17 a.m.
STS
-
YYZ
15h 09m
2 stops
C$ 965American Airlines
Tue, 18 Aug - Sat, 29 Aug

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
16 Sep
YYZ4:55 p.m.Toronto Pearson Intl
22h 51m
1 stop
STS12:46 p.m.Santa Rosa Sonoma County
21 Sep
STS5:31 p.m.Santa Rosa Sonoma County
19h 14m
1 stop
YYZ3:45 p.m.Toronto Pearson Intl
C$ 936
Alaska Airlines
19 Aug
YYZ1:15 p.m.Toronto Pearson Intl
11h 41m
2 stops
STS9:56 p.m.Santa Rosa Sonoma County
27 Aug
STS8:07 a.m.Santa Rosa Sonoma County
11h 47m
2 stops
YYZ10:54 p.m.Toronto Pearson Intl
C$ 1,000
Alaska Airlines
19 Aug
YYZ1:15 p.m.Toronto Pearson Intl
11h 41m
2 stops
STS9:56 p.m.Santa Rosa Sonoma County
28 Aug
STS6:53 p.m.Santa Rosa Sonoma County
25h 01m
2 stops
YYZ10:54 p.m.Toronto Pearson Intl
C$ 1,072

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
16 Sep
YYZ6:46 a.m.Toronto Pearson Intl
8h 26m
1 stop
STS12:12 p.m.Santa Rosa Sonoma County
21 Sep
STS4:21 p.m.Santa Rosa Sonoma County
15h 24m
2 stops
YYZ10:45 a.m.Toronto Pearson Intl
C$ 828
American Airlines
16 Sep
YYZ6:46 a.m.Toronto Pearson Intl
12h 01m
2 stops
STS3:47 p.m.Santa Rosa Sonoma County
21 Sep
STS4:21 p.m.Santa Rosa Sonoma County
15h 24m
2 stops
YYZ10:45 a.m.Toronto Pearson Intl
C$ 835
American Airlines
14 Jun
YYZ6:46 a.m.Toronto Pearson Intl
8h 19m
1 stop
STS12:05 p.m.Santa Rosa Sonoma County
22 Jun
STS4:20 p.m.Santa Rosa Sonoma County
15h 38m
2 stops
YYZ10:58 a.m.Toronto Pearson Intl
C$ 935

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 9 May 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 - STS

YYZSTS

Toronto Pearson Intl

Wed 16/9

6:46 a.m.-12:12 p.m.

1 stop8h 26m

Santa Rosa Sonoma County

Mon 21/9

4:21 p.m.-10:45 a.m.

2 stops15h 24m

C$ 828

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 16/9

6:46 a.m.-3:47 p.m.

2 stops12h 01m

Santa Rosa Sonoma County

Mon 21/9

4:21 p.m.-10:45 a.m.

2 stops15h 24m

C$ 835

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sun 14/6

6:46 a.m.-12:05 p.m.

1 stop8h 19m

Santa Rosa Sonoma County

Mon 22/6

4:20 p.m.-10:58 a.m.

2 stops15h 38m

C$ 935

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 16/9

4:55 p.m.-12:46 p.m.

1 stop22h 51m

Santa Rosa Sonoma County

Mon 21/9

5:31 p.m.-3:45 p.m.

1 stop19h 14m

C$ 936

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 2/6

6:26 p.m.-12:03 p.m.

2 stops20h 37m

Santa Rosa Sonoma County

Wed 3/6

4:20 p.m.-12:35 p.m.

2 stops17h 15m

C$ 940

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 2/6

6:26 p.m.-12:03 p.m.

2 stops20h 37m

Santa Rosa Sonoma County

Fri 5/6

12:45 p.m.-10:15 a.m.

2 stops18h 30m

C$ 951

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 24/8

6:28 p.m.-12:09 p.m.

1 stop20h 41m

Santa Rosa Sonoma County

Tue 25/8

4:08 p.m.-10:59 a.m.

2 stops15h 51m

C$ 957

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sun 31/5

2:55 p.m.-12:03 p.m.

1 stop24h 08m

Santa Rosa Sonoma County

Wed 3/6

4:20 p.m.-12:35 p.m.

2 stops17h 15m

C$ 961

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 3/7

6:46 a.m.-3:42 p.m.

2 stops11h 56m

Santa Rosa Sonoma County

Sun 5/7

1:00 p.m.-10:59 a.m.

2 stops18h 59m

C$ 964
Quickest round-trip

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 18/8

6:46 a.m.-12:09 p.m.

1 stop8h 23m

Santa Rosa Sonoma County

Sat 29/8

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

2 stops15h 09m

C$ 965

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

Can stopping save me money on Region of Ontario to Santa Rosa flights?

You could potentially save up to 47% on your flight if you consider stops on a Region of Ontario to Santa Rosa flight.

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

Frequently asked questions about flying from Ontario to Santa Rosa

  • 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

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

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