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Monterey

$187+ Cheap flights from Ontario to Monterey (ONT - MRY)

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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MRY
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Ontario to Monterey

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Monterey (MRY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$219
(United Airlines)

One-way from

$187
(Alaska Airlines)

Popular in

September

Cheapest in

July

Average price

$398
From Ontario to Monterey Regional
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One-way flight from Ontario to Monterey Regional
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Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Monterey

Cheapest flights from Ontario to Monterey
Explore the most affordable flight options available from Ontario to Monterey. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 9/276:51 pmONT - MRY
1 stop2h 47mUnited Airlines
Wed 10/12:19 pmMRY - ONT
1 stop3h 21mUnited Airlines
Deal found 6/12$219
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:10 amONT - MRY
2 stops16h 19mAlaska Airlines
Tue 9/306:00 amMRY - ONT
2 stops11h 00mAlaska Airlines
Deal found 6/10$343
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:10 amONT - MRY
2 stops12h 04mMultiple Airlines
Sun 8/242:20 pmMRY - ONT
1 stop6h 13mMultiple Airlines
Deal found 6/10$527
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/77:02 pmONT - MRY
1 stop14h 12mAmerican Airlines
Wed 8/134:03 pmMRY - ONT
1 stop29h 36mAmerican Airlines
Deal found 6/10$811

Cheapflights Fare Finder

Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Ontario to Monterey that are best for you.

Fly from

Ontario

Fly to

Monterey

Route

Depart

Return

Price

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Sat 9/27

6:51 pm-9:38 pm

1 stop2h 47m

Monterey Regional

Wed 10/1

2:19 pm-5:40 pm

1 stop3h 21m

$219

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Mon 9/29

7:10 am-11:29 pm

2 stops16h 19m

Monterey Regional

Tue 9/30

6:00 am-5:00 pm

2 stops11h 00m

$343

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Sat 8/23

7:10 am-7:14 pm

2 stops12h 04m

Monterey Regional

Sun 8/24

2:20 pm-8:33 pm

1 stop6h 13m

$527

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Thu 8/7

7:02 pm-9:14 am

1 stop14h 12m

Monterey Regional

Wed 8/13

4:03 pm-9:39 pm

1 stop29h 36m

$811

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Sat 9/13

6:00 am-6:12 pm

2 stops12h 12m

$187

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Sat 7/5

6:39 pm-11:44 pm

1 stop5h 05m

$230

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Wed 7/23

1:19 pm-11:26 pm

2 stops10h 07m

$800

OntarioMonterey

ONT - MRY

ONTMRY

Ontario

Thu 6/19

12:59 am-11:35 am

1 stop10h 36m

$926

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Ontario to Monterey

Have a flexible travel schedule? Discover the best time to fly to Monterey from Ontario 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 Ontario to Monterey

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Monterey (average of $376). Flying from Ontario to Monterey in June is currently the most expensive (average of $490). 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 ONT to MRY?

Find hourly flight availability from Ontario to Monterey. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Monterey in the afternoon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.

Rainfall in Monterey by month

Plan your trip to Monterey by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Monterey ranges from 0.0 - 3.8 inches per month. January is typically the wettest month, when rainfall can reach 3.8 in. July is typically the driest time to visit Monterey when rainfall is around 0.0 in.

Temperature in Monterey by month

Plan your trip to Monterey by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Monterey, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Monterey

Get insights into the airlines that provide service to Monterey. 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 Monterey. Reviews last updated June 12, 2025.
To help decide which airline to fly from Ontario to Monterey, see what other customers have to say about Alaska Airlines, United Airlines and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

  • What are the cheapest airlines flying from Ontario to Monterey round-trip?

    Cheapflights users have booked flights from Ontario to Monterey round-trip from $219. Other airlines that can offer you cheap pricing are Alaska Airlines, from $343, and American Airlines, from $811. United Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ontario to Monterey one-way?

    $187 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $230 and $926, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Monterey 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 Ontario to Monterey?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Monterey (average of $376). Flying from Ontario to Monterey in June is currently the most expensive (average of $490). 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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Top airline flying from Ontario to Monterey

Discover the top airline that operate flights from Ontario to Monterey. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$391FlexibilityNo cancel feeOn-time69%

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