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$421+ Cheap flights from Monterey (MRY) to Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
MRY — YYZ
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Monterey to Ontario

Keep the following information in mind while searching for Monterey to Ontario flight deals. Data was last updated September 11, 2025.

Round-trip from

$694
(United Airlines)

One-way from

$421
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$451
From Monterey Regional to Ontario
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One-way flight from Monterey Regional to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Monterey to Ontario

Cheapest flights from Monterey to Ontario
Explore the most affordable flight options available from Monterey to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/148:01 amMRY - YUL
1 stop19h 52mUnited Airlines
Sun 10/196:45 pmYUL - MRY
1 stop18h 00mUnited Airlines
Deal found 9/10$694
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:00 amMRY - YUL
1 stop11h 43mUnited Airlines
Sun 11/28:25 amYUL - MRY
1 stop28h 15mUnited Airlines
Deal found 9/11$748
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:19 pmMRY - YYZ
1 stop24h 36mUnited Airlines
Sun 10/196:30 amYYZ - MRY
1 stop18h 08mUnited Airlines
Deal found 9/10$851
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/264:07 pmMRY - YUL
2 stops16h 33mAmerican Airlines
Sun 11/27:30 amYUL - MRY
2 stops17h 55mAmerican Airlines
Deal found 9/11$872
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:30 amMRY - YYZ
1 stop8h 25mUnited Airlines
Thu 9/258:30 amYYZ - MRY
1 stop16h 23mUnited Airlines
Deal found 9/10$925
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:25 amMRY - YYZ
2 stops10h 33mUnited Airlines
Fri 9/2610:10 amYYZ - MRY
1 stop14h 43mUnited Airlines
Deal found 9/10$935
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:25 amMRY - YYZ
1 stop7h 50mUnited Airlines
Mon 9/2912:25 pmYYZ - MRY
1 stop12h 28mUnited Airlines
Deal found 9/10$956
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/106:15 amMRY - YUL
1 stop10h 50mAir Canada
Tue 10/146:45 pmYUL - MRY
1 stop18h 00mAir Canada
Deal found 9/10$959
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/165:15 amMRY - YYZ
2 stops13h 57mUnited Airlines
Fri 9/268:30 amYYZ - MRY
1 stop16h 23mUnited Airlines
Deal found 9/10$966
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:01 amMRY - YYZ
1 stop12h 14mUnited Airlines
Sun 9/288:30 amYYZ - MRY
1 stop16h 23mUnited Airlines
Deal found 9/10$1,020
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:25 amMRY - YYZ
1 stop7h 50mUnited Airlines
Sun 9/288:30 amYYZ - MRY
1 stop16h 23mUnited Airlines
Deal found 9/10$1,051
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:15 amMRY - YYZ
1 stop14h 33mUnited Airlines
Sat 9/274:18 pmYYZ - MRY
1 stop7h 40mUnited Airlines
Deal found 9/10$1,063

Cheapflights Fare Finder

 
Customize your flight search to find flights from Monterey to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Monterey to Ontario that are best for you.

Fly from

Monterey

Fly to

Ontario

Route

Depart

Return

Price

MontereyMontreal

MRY - YUL

MRYYUL

Monterey Regional

Tue 10/14

8:01 am-6:53 am

1 stop19h 52m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

6:45 pm-9:45 am

1 stop18h 00m

$694

MontereyMontreal

MRY - YUL

MRYYUL

Monterey Regional

Mon 3/2

7:00 am-8:43 pm

1 stop10h 43m

Montreal Pierre Elliott Trudeau Intl

Fri 3/6

5:35 pm-5:35 pm

1 stop27h 00m

$700

MontereyMontreal

MRY - YUL

MRYYUL

Monterey Regional

Sun 10/26

6:00 am-8:43 pm

1 stop11h 43m

Montreal Pierre Elliott Trudeau Intl

Sun 11/2

8:25 am-9:40 am

1 stop28h 15m

$748

MontereyToronto

MRY - YYZ

MRYYYZ

Monterey Regional

Fri 10/10

2:19 pm-5:55 pm

1 stop24h 36m

Toronto Pearson Intl

Sun 10/19

6:30 am-9:38 pm

1 stop18h 08m

$851

MontereyMontreal

MRY - YUL

MRYYUL

Monterey Regional

Sun 10/26

4:07 pm-11:40 am

2 stops16h 33m

Montreal Pierre Elliott Trudeau Intl

Sun 11/2

7:30 am-10:25 pm

2 stops17h 55m

$872

MontereyToronto

MRY - YYZ

MRYYYZ

Monterey Regional

Mon 9/22

6:30 pm-5:46 am

1 stop8h 16m

Toronto Pearson Intl

Mon 9/29

12:25 pm-9:53 pm

1 stop12h 28m

$925

MontereyToronto

MRY - YYZ

MRYYYZ

Monterey Regional

Sun 9/21

5:30 am-3:21 pm

1 stop6h 51m

Toronto Pearson Intl

Mon 9/29

8:30 am-9:53 pm

1 stop16h 23m

$925

MontereyMontreal

MRY - YUL

MRYYUL

Monterey Regional

Fri 10/10

6:15 am-8:05 pm

1 stop10h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 10/14

6:45 pm-9:45 am

1 stop18h 00m

$959

MontereyToronto

MRY - YYZ

MRYYYZ

Monterey Regional

Mon 9/22

10:30 am-9:15 pm

1 stop7h 45m

Toronto Pearson Intl

Sun 9/28

8:30 am-9:53 pm

1 stop16h 23m

$1,020

MontereyToronto

MRY - YYZ

MRYYYZ

Monterey Regional

Sun 9/21

6:01 am-7:25 pm

1 stop10h 24m

Toronto Pearson Intl

Sun 9/28

8:30 am-9:53 pm

1 stop16h 23m

$1,020

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 27 results
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2
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Best time to book a flight from Monterey to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Monterey with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Monterey to Ontario

What is the cheapest month to book a flight from Monterey to Region of Ontario?

Currently, January is the cheapest month in which you can book a flight from Monterey to Region of Ontario (average of $243). Flying from Monterey to Region of Ontario in August is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MRY to ON?

Find hourly flight availability from Monterey to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Monterey to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown United Airlines from Monterey to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Monterey to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Monterey to Ontario?

    Located just 3.2 mi from the city center, Monterey Regional (MRY) is the airport most travelers will use when flying to Ontario from Monterey.

  • How long is the flight from Monterey to Region of Ontario?

    Departing from Monterey to Region of Ontario will take you 19h 52m. The distance between Monterey and Region of Ontario is about 2539 mi.

  • Can I find deals for flights from Monterey to Ontario that include hotel bookings?

    Yes. In addition to deals on Monterey to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Monterey to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Monterey to Ontario.

  • Can I find deals for business class flights from Monterey to Ontario?

    Yes. Cheapflights offers flight deals from Monterey to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Monterey to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Monterey to Region of Ontario (average of $243). Flying from Monterey to Region of Ontario in August is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Monterey to Ontario

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Top airline flying from Monterey to Ontario

Discover the top airline that operate flights from Monterey to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$394Average$394FlexibilityNo cancel feeOn-time69%

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