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Cheap flights from Ontario to San Francisco from C$ 396

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 31/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:35 p.m. - 4:39 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
23h 04m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:40 p.m. - 8:09 p.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
27h 29m1 stop Las Vegas Harry Reid Intl
C$ 606Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Multiple Airlines Logo
8:35 p.m. - 4:39 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
23h 04m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:40 p.m. - 5:45 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
13h 05m2 stops Las Vegas Harry Reid Intl Calgary
C$ 649Multiple Airlines
Fri, 25 Sep - Wed, 30 Sep
Delta Logo
12:10 p.m. - 9:48 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
12h 38m2 stops New York John F Kennedy Intl Salt Lake City
Delta Logo
7:00 a.m. - 11:00 p.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
13h 00m2 stops Salt Lake City Detroit Metropolitan Wayne County
C$ 654Delta
Sat, 9 Jan - Tue, 12 Jan
Multiple Airlines Logo
8:35 p.m. - 4:39 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
23h 04m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:40 p.m. - 5:45 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
13h 05m2 stops Las Vegas Harry Reid Intl Calgary
C$ 655Multiple Airlines
Mon, 7 Sep - Mon, 14 Sep
Delta Logo
7:45 a.m. - 4:05 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
11h 20m2 stops Atlanta Hartsfield-Jackson Salt Lake City
Delta Logo
4:47 p.m. - 11:19 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
15h 32m2 stops Salt Lake City New York John F Kennedy Intl
C$ 656Delta
Tue, 27 Oct - Tue, 17 Nov
Multiple Airlines Logo
7:00 a.m. - 4:39 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
12h 39m2 stops Calgary Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:40 p.m. - 6:39 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
13h 59m1 stop Las Vegas Harry Reid Intl
C$ 663Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Delta Logo
6:15 a.m. - 9:48 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
18h 33m2 stops Atlanta Hartsfield-Jackson Salt Lake City
Delta Logo
7:00 a.m. - 12:01 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
14h 01m2 stops Salt Lake City Atlanta Hartsfield-Jackson
C$ 681Delta
Thu, 28 Jan - Sat, 6 Feb
Delta Logo
6:00 a.m. - 4:05 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
13h 05m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
11:29 a.m. - 11:11 p.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
8h 42m2 stops Salt Lake City Minneapolis St Paul
C$ 686Delta
Mon, 26 Oct - Sat, 14 Nov
Multiple Airlines Logo
7:00 a.m. - 4:39 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
12h 39m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:40 p.m. - 6:39 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
13h 59m1 stop Las Vegas Harry Reid Intl
C$ 688Multiple Airlines
Mon, 21 Sep - Mon, 28 Sep
Delta Logo
6:00 a.m. - 4:05 p.m.YYZ  Toronto Pearson Intl-STS Santa Rosa Sonoma County
13h 05m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
4:47 p.m. - 11:15 a.m.STS  Santa Rosa Sonoma County-YYZ Toronto Pearson Intl
15h 28m2 stops Salt Lake City Atlanta Hartsfield-Jackson
C$ 716Delta
Mon, 26 Oct - Mon, 16 Nov

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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
30 Jan
YYZ11:35 a.m.Toronto Pearson Intl
11h 10m
2 stops
STS7:45 p.m.Santa Rosa Sonoma County
6 Feb
STS8:00 a.m.Santa Rosa Sonoma County
11h 47m
2 stops
YYZ10:47 p.m.Toronto Pearson Intl
C$ 847
Alaska Airlines
24 Oct
YYZ4:55 p.m.Toronto Pearson Intl
21h 22m
2 stops
STS11:17 a.m.Santa Rosa Sonoma County
27 Oct
STS5:06 p.m.Santa Rosa Sonoma County
19h 59m
1 stop
YYZ4:05 p.m.Toronto Pearson Intl
C$ 978
Alaska Airlines
24 Oct
YYZ4:55 p.m.Toronto Pearson Intl
21h 22m
2 stops
STS11:17 a.m.Santa Rosa Sonoma County
27 Oct
STS5:06 p.m.Santa Rosa Sonoma County
19h 59m
1 stop
YYZ4:05 p.m.Toronto Pearson Intl
C$ 980

Delta flights from Region of Ontario to Santa Rosa

Our best Delta deals on Region of Ontario to Santa Rosa flight tickets
Delta
9 Jan
YYZ12:10 p.m.Toronto Pearson Intl
12h 38m
2 stops
STS9:48 p.m.Santa Rosa Sonoma County
12 Jan
STS7:00 a.m.Santa Rosa Sonoma County
13h 00m
2 stops
YYZ11:00 p.m.Toronto Pearson Intl
C$ 654
Delta
27 Oct
YYZ7:45 a.m.Toronto Pearson Intl
11h 20m
2 stops
STS4:05 p.m.Santa Rosa Sonoma County
17 Nov
STS4:47 p.m.Santa Rosa Sonoma County
15h 32m
2 stops
YYZ11:19 a.m.Toronto Pearson Intl
C$ 656
Delta
28 Jan
YYZ6:15 a.m.Toronto Pearson Intl
18h 33m
2 stops
STS9:48 p.m.Santa Rosa Sonoma County
6 Feb
STS7:00 a.m.Santa Rosa Sonoma County
14h 01m
2 stops
YYZ12:01 a.m.Toronto Pearson Intl
C$ 681

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 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

Sat 9/1

12:10 p.m.-9:48 p.m.

2 stops12h 38m

Santa Rosa Sonoma County

Tue 12/1

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

2 stops13h 00m

C$ 654

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.-5:45 a.m.

2 stops13h 05m

C$ 655

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Tue 27/10

7:45 a.m.-4:05 p.m.

2 stops11h 20m

Santa Rosa Sonoma County

Tue 17/11

4:47 p.m.-11:19 a.m.

2 stops15h 32m

C$ 656

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

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

Sat 6/2

7:00 a.m.-12:01 a.m.

2 stops14h 01m

C$ 681
Quickest round-trip

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Mon 26/10

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

2 stops13h 05m

Santa Rosa Sonoma County

Sat 14/11

11:29 a.m.-11:11 p.m.

2 stops8h 42m

C$ 686

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.

1 stop12h 39m

Santa Rosa Sonoma County

Mon 28/9

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

1 stop13h 59m

C$ 688

TorontoSanta Rosa

YYZ Toronto Pearson Intl - STS Santa Rosa Sonoma County

YYZSTS

Toronto Pearson Intl

Mon 26/10

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

2 stops13h 05m

Santa Rosa Sonoma County

Mon 16/11

4:47 p.m.-11:15 a.m.

2 stops15h 28m

C$ 716

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 50m

Direct flights

None
The fastest flight from Region of Ontario to Santa Rosa takes 11h 50m
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.
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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.

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