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Cheap flights from Ontario to San Francisco from $214

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 10/14. 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
0 bags

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Cheap round-trip flights

Alaska Airlines Logo
4:45 pm - 10:05 pmYYZ-STS
8h 20m1 stop
Alaska Airlines Logo
2:22 pm - 3:35 pmSTS-YYZ
22h 13m1 stop
$416Alaska Airlines
Find Deal
Wed, Nov 5 - Fri, Nov 7
Multiple Airlines Logo
4:45 pm - 10:05 pmYYZ-STS
8h 20m1 stop
Multiple Airlines Logo
8:07 pm - 12:38 amSTS-YYZ
25h 31m2 stops
$424Multiple Airlines
Find Deal
Wed, Nov 5 - Fri, Nov 7
American Airlines Logo
3:45 pm - 12:01 pmYYZ-STS
23h 16m2 stops
American Airlines Logo
4:17 pm - 10:59 amSTS-YYZ
15h 42m2 stops
$463American Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
American Airlines Logo
5:59 pm - 12:01 pmYYZ-STS
21h 02m2 stops
American Airlines Logo
4:17 pm - 10:59 amSTS-YYZ
15h 42m2 stops
$471American Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
Alaska Airlines Logo
4:45 pm - 10:37 pmYYZ-STS
32h 52m2 stops
Alaska Airlines Logo
8:03 pm - 3:35 pmSTS-YYZ
16h 32m2 stops
$472Alaska Airlines
Find Deal
Wed, Nov 5 - Fri, Nov 7
American Airlines Logo
6:29 pm - 12:01 pmYYZ-STS
20h 32m2 stops
American Airlines Logo
4:17 pm - 2:30 pmSTS-YYZ
19h 13m2 stops
$508American Airlines
Find Deal
Sun, Oct 12 - Thu, Oct 16
American Airlines Logo
6:29 pm - 12:01 pmYYZ-STS
20h 32m2 stops
American Airlines Logo
4:17 pm - 11:10 amSTS-YYZ
15h 53m2 stops
$545American Airlines
Find Deal
Sun, Oct 12 - Fri, Oct 17
American Airlines Logo
6:29 pm - 12:01 pmYYZ-STS
20h 32m2 stops
American Airlines Logo
4:17 pm - 2:59 pmSTS-YYZ
19h 42m2 stops
$551American Airlines
Find Deal
Fri, Oct 10 - Thu, Oct 16
Alaska Airlines Logo
4:45 pm - 1:36 pmYYZ-STS
23h 51m1 stop
Alaska Airlines Logo
12:09 pm - 3:00 pmSTS-YYZ
23h 51m2 stops
$578Alaska Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
American Airlines Logo
6:49 am - 12:01 pmYYZ-STS
8h 12m1 stop
American Airlines Logo
4:17 pm - 10:59 amSTS-YYZ
15h 42m2 stops
$582American Airlines
Find Deal
Wed, Oct 15 - Mon, Oct 20

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
Nov 5
YYZ4:45 pmToronto Pearson Intl
8h 20m
1 stop
STS10:05 pmSanta Rosa Sonoma County
Nov 7
STS2:22 pmSanta Rosa Sonoma County
22h 13m
1 stop
YYZ3:35 pmToronto Pearson Intl
$416
Find similar
Alaska Airlines
Nov 5
YYZ4:45 pmToronto Pearson Intl
32h 52m
2 stops
STS10:37 pmSanta Rosa Sonoma County
Nov 7
STS8:03 pmSanta Rosa Sonoma County
16h 32m
2 stops
YYZ3:35 pmToronto Pearson Intl
$472
Find similar
Alaska Airlines
Oct 17
YYZ4:45 pmToronto Pearson Intl
23h 51m
1 stop
STS1:36 pmSanta Rosa Sonoma County
Oct 20
STS12:09 pmSanta Rosa Sonoma County
23h 51m
2 stops
YYZ3:00 pmToronto Pearson Intl
$578
Find similar

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
Oct 13
YYZ3:45 pmToronto Pearson Intl
23h 16m
2 stops
STS12:01 pmSanta Rosa Sonoma County
Oct 20
STS4:17 pmSanta Rosa Sonoma County
15h 42m
2 stops
YYZ10:59 amToronto Pearson Intl
$463
Find similar
American Airlines
Oct 11
YYZ5:59 pmToronto Pearson Intl
21h 02m
2 stops
STS12:01 pmSanta Rosa Sonoma County
Oct 18
STS4:17 pmSanta Rosa Sonoma County
15h 42m
2 stops
YYZ10:59 amToronto Pearson Intl
$471
Find similar
American Airlines
Oct 12
YYZ6:29 pmToronto Pearson Intl
20h 32m
2 stops
STS12:01 pmSanta Rosa Sonoma County
Oct 16
STS4:17 pmSanta Rosa Sonoma County
19h 13m
2 stops
YYZ2:30 pmToronto Pearson Intl
$508
Find similar

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 832,500 searches. Data last updated September 17, 2025.
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

Wed 11/5

4:45 pm-10:05 pm

1 stop8h 20m

Santa Rosa Sonoma County

Fri 11/7

2:22 pm-3:35 pm

1 stop22h 13m

$416

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 11/5

4:45 pm-10:05 pm

1 stop8h 20m

Santa Rosa Sonoma County

Fri 11/7

8:07 pm-12:38 am

2 stops25h 31m

$424

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Mon 10/13

3:45 pm-12:01 pm

2 stops23h 16m

Santa Rosa Sonoma County

Mon 10/20

4:17 pm-10:59 am

2 stops15h 42m

$463

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sat 10/11

5:59 pm-12:01 pm

2 stops21h 02m

Santa Rosa Sonoma County

Sat 10/18

4:17 pm-10:59 am

2 stops15h 42m

$471

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 11/5

4:45 pm-10:37 pm

2 stops32h 52m

Santa Rosa Sonoma County

Fri 11/7

8:03 pm-3:35 pm

2 stops16h 32m

$472

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sun 10/12

6:29 pm-12:01 pm

2 stops20h 32m

Santa Rosa Sonoma County

Thu 10/16

4:17 pm-2:30 pm

2 stops19h 13m

$508

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Sun 10/12

6:29 pm-12:01 pm

2 stops20h 32m

Santa Rosa Sonoma County

Fri 10/17

4:17 pm-11:10 am

2 stops15h 53m

$545

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 10/10

6:29 pm-12:01 pm

2 stops20h 32m

Santa Rosa Sonoma County

Thu 10/16

4:17 pm-2:59 pm

2 stops19h 42m

$551

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Fri 10/17

4:45 pm-1:36 pm

1 stop23h 51m

Santa Rosa Sonoma County

Mon 10/20

12:09 pm-3:00 pm

2 stops23h 51m

$578

TorontoSanta Rosa

YYZ - STS

YYZSTS

Toronto Pearson Intl

Wed 10/15

6:49 am-12:01 pm

1 stop8h 12m

Santa Rosa Sonoma County

Mon 10/20

4:17 pm-10:59 am

2 stops15h 42m

$582

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 and American Airlines are the most popular carriers operating from Ontario to Santa Rosa Sonoma County

What 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 50% of people opting to fly with this airline when traveling to Santa Rosa. Keep in mind that there are 7 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

Direct flights

None
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 refresh daily.

  • How old do you have to be to fly from Ontario to Santa Rosa Sonoma County Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for 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 required for your trip to Santa Rosa Sonoma County Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santa Rosa Sonoma County Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Mendocino
Ukiah
Little River
Point Arena

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Santa Rosa?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Santa Rosa for you.

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?

momondo helps you find the best flight between Ontario and Santa Rosa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Santa Rosa right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Santa Rosa flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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