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Cheap flights from Ontario to San Francisco from C$ 359

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 9/7. 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
4:55 p.m. - 10:57 p.m.
YYZ
-
STS
9h 02m
1 stop
Alaska Airlines Logo
7:46 p.m. - 3:45 p.m.
STS
-
YYZ
16h 59m
1 stop
C$ 725Alaska Airlines
Mon, 4 May - Mon, 11 May
Alaska Airlines Logo
4:55 p.m. - 10:57 p.m.
YYZ
-
STS
9h 02m
1 stop
Alaska Airlines Logo
9:33 a.m. - 3:45 p.m.
STS
-
YYZ
27h 12m
2 stops
C$ 739Alaska Airlines
Mon, 4 May - Mon, 11 May
Alaska Airlines Logo
4:55 p.m. - 10:01 a.m.
YYZ
-
STS
20h 06m
2 stops
Alaska Airlines Logo
9:33 a.m. - 3:45 p.m.
STS
-
YYZ
27h 12m
2 stops
C$ 745Alaska Airlines
Mon, 4 May - Mon, 11 May
Alaska Airlines Logo
4:55 p.m. - 10:57 p.m.
YYZ
-
STS
9h 02m
1 stop
Alaska Airlines Logo
1:13 p.m. - 3:45 p.m.
STS
-
YYZ
23h 32m
1 stop
C$ 759Alaska Airlines
Sat, 2 May - Wed, 6 May
Alaska Airlines Logo
4:55 p.m. - 10:57 p.m.
YYZ
-
STS
9h 02m
1 stop
Alaska Airlines Logo
7:23 a.m. - 3:45 p.m.
STS
-
YYZ
29h 22m
2 stops
C$ 813Alaska Airlines
Sat, 2 May - Wed, 6 May
Alaska Airlines Logo
4:55 p.m. - 10:57 p.m.
YYZ
-
STS
9h 02m
1 stop
Alaska Airlines Logo
1:13 p.m. - 3:45 p.m.
STS
-
YYZ
23h 32m
1 stop
C$ 822Alaska Airlines
Mon, 27 Apr - Tue, 28 Apr
Alaska Airlines Logo
4:55 p.m. - 10:58 a.m.
YYZ
-
STS
21h 03m
2 stops
Alaska Airlines Logo
1:13 p.m. - 3:45 p.m.
STS
-
YYZ
23h 32m
1 stop
C$ 850Alaska Airlines
Mon, 27 Apr - Tue, 28 Apr
Multiple Airlines Logo
9:40 a.m. - 11:01 p.m.
YYZ
-
STS
16h 21m
1 stop
Multiple Airlines Logo
7:59 a.m. - 8:50 p.m.
STS
-
YYZ
9h 51m
1 stop
C$ 871Multiple Airlines
Thu, 7 May - Thu, 14 May
Alaska Airlines Logo
4:55 p.m. - 10:01 a.m.
YYZ
-
STS
20h 06m
2 stops
Alaska Airlines Logo
7:23 a.m. - 3:45 p.m.
STS
-
YYZ
29h 22m
2 stops
C$ 879Alaska Airlines
Sat, 2 May - Wed, 6 May
Alaska Airlines Logo
4:55 p.m. - 10:01 a.m.
YYZ
-
STS
20h 06m
2 stops
Alaska Airlines Logo
7:23 a.m. - 3:45 p.m.
STS
-
YYZ
29h 22m
2 stops
C$ 880Alaska Airlines
Sat, 2 May - Wed, 6 May

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
4 May
YYZ4:55 p.m.Toronto Pearson Intl
9h 02m
1 stop
STS10:57 p.m.Santa Rosa Sonoma County
11 May
STS7:46 p.m.Santa Rosa Sonoma County
16h 59m
1 stop
YYZ3:45 p.m.Toronto Pearson Intl
C$ 725
Alaska Airlines
4 May
YYZ4:55 p.m.Toronto Pearson Intl
9h 02m
1 stop
STS10:57 p.m.Santa Rosa Sonoma County
11 May
STS9:33 a.m.Santa Rosa Sonoma County
27h 12m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 739
Alaska Airlines
4 May
YYZ4:55 p.m.Toronto Pearson Intl
20h 06m
2 stops
STS10:01 a.m.Santa Rosa Sonoma County
11 May
STS9:33 a.m.Santa Rosa Sonoma County
27h 12m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 745

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
9 Jul
YYZ6:46 a.m.Toronto Pearson Intl
8h 17m
1 stop
STS12:03 p.m.Santa Rosa Sonoma County
23 Jul
STS4:20 p.m.Santa Rosa Sonoma County
19h 14m
2 stops
YYZ2:34 p.m.Toronto Pearson Intl
C$ 895
American Airlines
11 Jun
YYZ6:18 p.m.Toronto Pearson Intl
20h 47m
1 stop
STS12:05 p.m.Santa Rosa Sonoma County
18 Jun
STS4:20 p.m.Santa Rosa Sonoma County
27h 10m
2 stops
YYZ10:30 p.m.Toronto Pearson Intl
C$ 897
American Airlines
12 Jul
YYZ6:02 p.m.Toronto Pearson Intl
21h 23m
2 stops
STS12:25 p.m.Santa Rosa Sonoma County
28 Jul
STS4:20 p.m.Santa Rosa Sonoma County
15h 39m
2 stops
YYZ10:59 a.m.Toronto Pearson Intl
C$ 917

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 25 March 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
Quickest round-trip

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 4/5

4:55 p.m.-10:57 p.m.

1 stop9h 02m

Santa Rosa Sonoma County

Mon 11/5

7:46 p.m.-3:45 p.m.

1 stop16h 59m

C$ 725

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 4/5

4:55 p.m.-10:57 p.m.

1 stop9h 02m

Santa Rosa Sonoma County

Mon 11/5

9:33 a.m.-3:45 p.m.

2 stops27h 12m

C$ 739

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 4/5

4:55 p.m.-10:01 a.m.

2 stops20h 06m

Santa Rosa Sonoma County

Mon 11/5

9:33 a.m.-3:45 p.m.

2 stops27h 12m

C$ 745

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-10:57 p.m.

1 stop9h 02m

Santa Rosa Sonoma County

Wed 6/5

1:13 p.m.-3:45 p.m.

1 stop23h 32m

C$ 759

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-10:57 p.m.

1 stop9h 02m

Santa Rosa Sonoma County

Wed 6/5

7:23 a.m.-3:45 p.m.

2 stops29h 22m

C$ 813

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 27/4

4:55 p.m.-10:57 p.m.

1 stop9h 02m

Santa Rosa Sonoma County

Tue 28/4

1:13 p.m.-3:45 p.m.

1 stop23h 32m

C$ 822

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 27/4

4:55 p.m.-10:58 a.m.

2 stops21h 03m

Santa Rosa Sonoma County

Tue 28/4

1:13 p.m.-3:45 p.m.

1 stop23h 32m

C$ 850

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 7/5

9:40 a.m.-11:01 p.m.

1 stop16h 21m

Santa Rosa Sonoma County

Thu 14/5

7:59 a.m.-8:50 p.m.

1 stop9h 51m

C$ 871

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-10:01 a.m.

2 stops20h 06m

Santa Rosa Sonoma County

Wed 6/5

7:23 a.m.-3:45 p.m.

2 stops29h 22m

C$ 879

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-10:01 a.m.

2 stops20h 06m

Santa Rosa Sonoma County

Wed 6/5

7:23 a.m.-3:45 p.m.

2 stops29h 22m

C$ 880

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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

9h 02m

Direct flights

None
The fastest flight from Region of Ontario to Santa Rosa takes 9h 02m
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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