Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Ontario to San Francisco from $278

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 5/28. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
12:30 pm - 10:44 pm
YUL
-
MRY
13h 14m
2 stops
American Airlines Logo
12:48 pm - 11:44 am
MRY
-
YUL
19h 56m
2 stops
$501American Airlines
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
10:15 pm - 3:04 pm
YYZ
-
MRY
43h 49m
2 stops
Multiple Airlines Logo
9:34 pm - 6:20 am
MRY
-
YYZ
29h 46m
1 stop
$508Multiple Airlines
Fri, Mar 13 - Sun, Mar 22
United Airlines Logo
4:55 pm - 11:27 am
YUL
-
MRY
21h 32m
2 stops
United Airlines Logo
5:00 am - 7:45 pm
MRY
-
YUL
11h 45m
2 stops
$528United Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
12:59 pm - 11:13 pm
YUL
-
MRY
13h 14m
2 stops
American Airlines Logo
7:21 pm - 1:45 pm
MRY
-
YUL
15h 24m
2 stops
$542American Airlines
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
6:10 am - 10:19 pm
YUL
-
MRY
19h 09m
2 stops
United Airlines Logo
1:58 pm - 10:40 am
MRY
-
YUL
17h 42m
2 stops
$549United Airlines
Fri, Apr 24 - Tue, Apr 28
United Airlines Logo
6:10 am - 8:58 pm
YUL
-
MRY
17h 48m
2 stops
United Airlines Logo
6:40 pm - 10:40 am
MRY
-
YUL
13h 00m
2 stops
$550United Airlines
Mon, Apr 6 - Fri, Apr 17
United Airlines Logo
7:00 am - 6:01 pm
YUL
-
MRY
14h 01m
2 stops
United Airlines Logo
2:01 pm - 2:00 pm
MRY
-
YUL
20h 59m
2 stops
$556United Airlines
Sat, Mar 21 - Mon, Mar 23
United Airlines Logo
6:00 am - 6:01 pm
YUL
-
MRY
15h 01m
2 stops
United Airlines Logo
7:00 pm - 2:00 pm
MRY
-
YUL
16h 00m
2 stops
$581United Airlines
Thu, Mar 19 - Tue, Mar 24
American Airlines Logo
3:57 pm - 9:32 am
YUL
-
MRY
20h 35m
2 stops
American Airlines Logo
7:21 pm - 1:45 pm
MRY
-
YUL
15h 24m
2 stops
$582American Airlines
Mon, Mar 16 - Tue, Mar 24
Air Canada Logo
6:30 am - 2:55 pm
YYZ
-
MRY
11h 25m
1 stop
Air Canada Logo
7:05 am - 11:58 pm
MRY
-
YYZ
13h 53m
1 stop
$675Air Canada
Fri, Jul 3 - Sat, Jul 11

United Airlines flights from Region of Ontario to Monterey

Our best United Airlines deals on Region of Ontario to Monterey flight tickets
United Airlines
Apr 7
YUL4:55 pmMontreal Pierre Elliott Trudeau Intl
21h 32m
2 stops
MRY11:27 amMonterey Regional
Apr 14
MRY5:00 amMonterey Regional
11h 45m
2 stops
YUL7:45 pmMontreal Pierre Elliott Trudeau Intl
$528
United Airlines
Apr 24
YUL6:10 amMontreal Pierre Elliott Trudeau Intl
19h 09m
2 stops
MRY10:19 pmMonterey Regional
Apr 28
MRY1:58 pmMonterey Regional
17h 42m
2 stops
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$549
United Airlines
Apr 6
YUL6:10 amMontreal Pierre Elliott Trudeau Intl
17h 48m
2 stops
MRY8:58 pmMonterey Regional
Apr 17
MRY6:40 pmMonterey Regional
13h 00m
2 stops
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$550

American Airlines flights from Region of Ontario to Monterey

Our best American Airlines deals on Region of Ontario to Monterey flight tickets
American Airlines
Apr 8
YUL12:30 pmMontreal Pierre Elliott Trudeau Intl
13h 14m
2 stops
MRY10:44 pmMonterey Regional
Apr 15
MRY12:48 pmMonterey Regional
19h 56m
2 stops
YUL11:44 amMontreal Pierre Elliott Trudeau Intl
$501
American Airlines
Mar 18
YUL12:59 pmMontreal Pierre Elliott Trudeau Intl
13h 14m
2 stops
MRY11:13 pmMonterey Regional
Mar 25
MRY7:21 pmMonterey Regional
15h 24m
2 stops
YUL1:45 pmMontreal Pierre Elliott Trudeau Intl
$542
American Airlines
Mar 16
YUL3:57 pmMontreal Pierre Elliott Trudeau Intl
20h 35m
2 stops
MRY9:32 amMonterey Regional
Mar 24
MRY7:21 pmMonterey Regional
15h 24m
2 stops
YUL1:45 pmMontreal Pierre Elliott Trudeau Intl
$582

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Monterey 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 February 27, 2026.
Use the filters below to find and compare flights from Ontario to Monterey that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Wed 4/8

12:30 pm-10:44 pm

2 stops13h 14m

Monterey Regional

Wed 4/15

12:48 pm-11:44 am

2 stops19h 56m

$501

TorontoMonterey

YYZ - MRY

YYZMRY

Toronto Pearson Intl

Fri 3/13

10:15 pm-3:04 pm

2 stops43h 49m

Monterey Regional

Sun 3/22

9:34 pm-6:20 am

1 stop29h 46m

$508

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

4:55 pm-11:27 am

2 stops21h 32m

Monterey Regional

Tue 4/14

5:00 am-7:45 pm

2 stops11h 45m

$528

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Wed 3/18

12:59 pm-11:13 pm

2 stops13h 14m

Monterey Regional

Wed 3/25

7:21 pm-1:45 pm

2 stops15h 24m

$542

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Fri 4/24

6:10 am-10:19 pm

2 stops19h 09m

Monterey Regional

Tue 4/28

1:58 pm-10:40 am

2 stops17h 42m

$549

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Mon 4/6

6:10 am-8:58 pm

2 stops17h 48m

Monterey Regional

Fri 4/17

6:40 pm-10:40 am

2 stops13h 00m

$550

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Sat 3/21

7:00 am-6:01 pm

2 stops14h 01m

Monterey Regional

Mon 3/23

2:01 pm-2:00 pm

2 stops20h 59m

$556

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Thu 3/19

6:00 am-6:01 pm

2 stops15h 01m

Monterey Regional

Tue 3/24

7:00 pm-2:00 pm

2 stops16h 00m

$581

MontrealMonterey

YUL - MRY

YULMRY

Montreal Pierre Elliott Trudeau Intl

Mon 3/16

3:57 pm-9:32 am

2 stops20h 35m

Monterey Regional

Tue 3/24

7:21 pm-1:45 pm

2 stops15h 24m

$582

TorontoMonterey

YYZ - MRY

YYZMRY

Toronto Pearson Intl

Fri 7/3

6:30 am-2:55 pm

1 stop11h 25m

Monterey Regional

Sat 7/11

7:05 am-11:58 pm

1 stop13h 53m

$675

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

See travel insights to San Francisco from

How to get the cheapest flight ticket from Region of Ontario to Monterey

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 Monterey Regional?

Alaska Airlines and United Airlines are the most popular carriers operating from Ontario to Monterey Regional

What airlines fly to Monterey?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Monterey from Region of Ontario according to our data. Air Canada is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Monterey. Keep in mind that there are 7 different airlines that fly to Monterey on a routine basis, so you have a few additional options to choose from.

Cheap Region of Ontario to Monterey flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Monterey

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from Region of Ontario to Monterey takes 10h 10m
There are no direct flights from Region of Ontario to Monterey. There are no popular flight routes from Region of Ontario to Monterey.
Search flight deals

  • When did momondo last update prices for flights from Ontario to Monterey Regional Airport?

    Prices for flights from Ontario to Monterey Regional Airport were last updated today.

  • How old do you have to be to fly from Ontario to Monterey Regional 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 Monterey Regional Airport.

  • What documentation or ID do you need to fly to Monterey Regional Airport?

    The necessary travel and health documents for your Monterey Regional Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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 Monterey for you.

Can I find flights from Ontario to Monterey with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Monterey flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Monterey?

Once all potential Ontario to Monterey 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 Monterey right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Monterey, momondo offers a useful price alert feature which will track prices for flights to Monterey from Ontario and alert you when they change.

An easier way to manage your Monterey trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 3/29
Sun 4/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States