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Cheap flights from Ontario to San Francisco from C$ 424

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 6/8. 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.
American Airlines Logo
6:46 a.m. - 12:09 p.m.
YYZ
-
STS
8h 23m
1 stop
American Airlines Logo
4:08 p.m. - 10:59 a.m.
STS
-
YYZ
15h 51m
2 stops
C$ 722American Airlines
Thu, 13 Aug - Wed, 19 Aug
Delta Logo
6:00 a.m. - 4:08 p.m.
YYZ
-
STS
13h 08m
2 stops
Delta Logo
4:55 p.m. - 1:09 p.m.
STS
-
YYZ
17h 14m
2 stops
C$ 759Delta
Wed, 2 Dec - Fri, 4 Dec
American Airlines Logo
7:24 p.m. - 3:42 p.m.
YYZ
-
STS
23h 18m
2 stops
American Airlines Logo
4:12 p.m. - 6:40 p.m.
STS
-
YYZ
23h 28m
2 stops
C$ 769American Airlines
Wed, 15 Jul - Mon, 20 Jul
American Airlines Logo
6:02 p.m. - 12:03 p.m.
YYZ
-
STS
21h 01m
2 stops
American Airlines Logo
12:58 p.m. - 10:17 a.m.
STS
-
YYZ
18h 19m
2 stops
C$ 770American Airlines
Tue, 28 Jul - Tue, 18 Aug
American Airlines Logo
6:46 a.m. - 3:37 p.m.
YYZ
-
STS
11h 51m
2 stops
American Airlines Logo
4:08 p.m. - 10:59 a.m.
STS
-
YYZ
15h 51m
2 stops
C$ 796American Airlines
Thu, 13 Aug - Wed, 19 Aug
Delta Logo
6:00 a.m. - 4:08 p.m.
YYZ
-
STS
13h 08m
2 stops
Delta Logo
4:55 p.m. - 1:09 p.m.
STS
-
YYZ
17h 14m
2 stops
C$ 797Delta
Wed, 2 Dec - Fri, 4 Dec
American Airlines Logo
6:46 a.m. - 12:03 p.m.
YYZ
-
STS
8h 17m
1 stop
American Airlines Logo
4:12 p.m. - 10:18 a.m.
STS
-
YYZ
15h 06m
2 stops
C$ 804American Airlines
Wed, 15 Jul - Wed, 22 Jul
American Airlines Logo
6:46 a.m. - 12:03 p.m.
YYZ
-
STS
8h 17m
1 stop
American Airlines Logo
12:58 p.m. - 6:30 p.m.
STS
-
YYZ
26h 32m
2 stops
C$ 806American Airlines
Wed, 29 Jul - Thu, 13 Aug
American Airlines Logo
6:46 a.m. - 12:09 p.m.
YYZ
-
STS
8h 23m
1 stop
American Airlines Logo
12:39 p.m. - 1:59 p.m.
STS
-
YYZ
22h 20m
1 stop
C$ 830American Airlines
Thu, 13 Aug - Wed, 19 Aug
Delta Logo
5:50 p.m. - 10:39 a.m.
YYZ
-
STS
19h 49m
1 stop
Delta Logo
4:55 p.m. - 1:09 p.m.
STS
-
YYZ
17h 14m
2 stops
C$ 868Delta
Wed, 2 Dec - Fri, 4 Dec

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Delta flights from Region of Ontario to Santa Rosa

Our best Delta deals on Region of Ontario to Santa Rosa flight tickets
Delta
2 Dec
YYZ6:00 a.m.Toronto Pearson Intl
13h 08m
2 stops
STS4:08 p.m.Santa Rosa Sonoma County
4 Dec
STS4:55 p.m.Santa Rosa Sonoma County
17h 14m
2 stops
YYZ1:09 p.m.Toronto Pearson Intl
C$ 759
Delta
2 Dec
YYZ6:00 a.m.Toronto Pearson Intl
13h 08m
2 stops
STS4:08 p.m.Santa Rosa Sonoma County
4 Dec
STS4:55 p.m.Santa Rosa Sonoma County
17h 14m
2 stops
YYZ1:09 p.m.Toronto Pearson Intl
C$ 797
Delta
2 Dec
YYZ5:50 p.m.Toronto Pearson Intl
19h 49m
1 stop
STS10:39 a.m.Santa Rosa Sonoma County
4 Dec
STS4:55 p.m.Santa Rosa Sonoma County
17h 14m
2 stops
YYZ1:09 p.m.Toronto Pearson Intl
C$ 868

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
8h 04m
1 stop
STS9:59 p.m.Santa Rosa Sonoma County
29 Sep
STS1:40 p.m.Santa Rosa Sonoma County
23h 05m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 905
Alaska Airlines
16 Sep
YYZ4:55 p.m.Toronto Pearson Intl
8h 04m
1 stop
STS9:59 p.m.Santa Rosa Sonoma County
29 Sep
STS7:03 a.m.Santa Rosa Sonoma County
29h 42m
1 stop
YYZ3:45 p.m.Toronto Pearson Intl
C$ 921
Alaska Airlines
22 Sep
YYZ4:55 p.m.Toronto Pearson Intl
8h 04m
1 stop
STS9:59 p.m.Santa Rosa Sonoma County
26 Sep
STS6:53 p.m.Santa Rosa Sonoma County
17h 52m
2 stops
YYZ3:45 p.m.Toronto Pearson Intl
C$ 922

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 24 June 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

Thu 13/8

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

1 stop8h 23m

Santa Rosa Sonoma County

Wed 19/8

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

2 stops15h 51m

C$ 722

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 2/12

6:00 a.m.-4:08 p.m.

2 stops13h 08m

Santa Rosa Sonoma County

Fri 4/12

4:55 p.m.-1:09 p.m.

2 stops17h 14m

C$ 759

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 15/7

7:24 p.m.-3:42 p.m.

2 stops23h 18m

Santa Rosa Sonoma County

Mon 20/7

4:12 p.m.-6:40 p.m.

2 stops23h 28m

C$ 769

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Tue 28/7

6:02 p.m.-12:03 p.m.

2 stops21h 01m

Santa Rosa Sonoma County

Tue 18/8

12:58 p.m.-10:17 a.m.

2 stops18h 19m

C$ 770

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 13/8

6:46 a.m.-3:37 p.m.

2 stops11h 51m

Santa Rosa Sonoma County

Wed 19/8

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

2 stops15h 51m

C$ 796

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 2/12

6:00 a.m.-4:08 p.m.

2 stops13h 08m

Santa Rosa Sonoma County

Fri 4/12

4:55 p.m.-1:09 p.m.

2 stops17h 14m

C$ 797
Quickest round-trip

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 15/7

6:46 a.m.-12:03 p.m.

1 stop8h 17m

Santa Rosa Sonoma County

Wed 22/7

4:12 p.m.-10:18 a.m.

2 stops15h 06m

C$ 804

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 29/7

6:46 a.m.-12:03 p.m.

1 stop8h 17m

Santa Rosa Sonoma County

Thu 13/8

12:58 p.m.-6:30 p.m.

2 stops26h 32m

C$ 806

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Thu 13/8

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

1 stop8h 23m

Santa Rosa Sonoma County

Wed 19/8

12:39 p.m.-1:59 p.m.

1 stop22h 20m

C$ 830

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 2/12

5:50 p.m.-10:39 a.m.

1 stop19h 49m

Santa Rosa Sonoma County

Fri 4/12

4:55 p.m.-1:09 p.m.

2 stops17h 14m

C$ 868

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

8h 56m

Direct flights

None
The fastest flight from Region of Ontario to Santa Rosa takes 8h 56m
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.

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