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$198+ Cheap flights from Monterrey (MTY) to Ontario (ONT)

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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
MTY — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Monterrey to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Monterrey (MTY) to Ontario (ONT). 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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$377
(Kiwi.com)

One-way from

$198
(Trip.com)

Popular in

July

Cheapest in

January

Average price

$220
Provider with most accurate pricing for Monterrey Gen Mariano Escobedo-Ontario flight deals.
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Provider most trusted by Cheapflights users for Monterrey Gen Mariano Escobedo-Ontario flights.
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From Monterrey Gen Mariano Escobedo to Ontario
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One-way flight from Monterrey Gen Mariano Escobedo to Ontario
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Highest demand for flights based on searches. 18% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Monterrey to Ontario

Cheapest flights from Monterrey to Ontario
Explore the most affordable flight options available from Monterrey to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/29:35 amMTY - ONT
1 stop15h 04mMultiple Airlines
Mon 6/309:11 pmONT - MTY
1 stop9h 24mMultiple Airlines
Deal found 4/30$377
This Trip.com deal was found by Cheapflights users on 4/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/88:15 amMTY - ONT
1 stop12h 03mVolaris
Sun 6/159:11 pmONT - MTY
1 stop11h 36mVolaris
Deal found 4/30$421
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/284:50 pmMTY - ONT
1 stop6h 55mUnited Airlines
Thu 6/265:05 amONT - MTY
2 stops14h 39mUnited Airlines
Deal found 4/30$459
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/302:59 pmMTY - ONT
2 stops17h 25mFrontier
Wed 5/76:47 pmONT - MTY
2 stops20h 36mFrontier
Deal found 4/29$486
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/3011:29 amMTY - ONT
1 stop11h 29mAmerican Airlines
Thu 6/512:59 amONT - MTY
1 stop11h 36mAmerican Airlines
Deal found 4/30$508
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/310:40 amMTY - ONT
2 stops14h 02mDelta
Sun 6/296:00 amONT - MTY
2 stops11h 04mDelta
Deal found 4/30$510

Cheapflights Fare Finder

Customize your flight search to find flights from Monterrey 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 May 1, 2025.
Use the filters below to find and compare flights from Monterrey to Ontario that are best for you.

Fly from

Monterrey

Fly to

Ontario

Route

Depart

Return

Price

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Mon 6/2

9:35 am-11:39 pm

1 stop15h 04m

Ontario

Mon 6/30

9:11 pm-7:35 am

1 stop9h 24m

$377

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Sun 6/8

8:15 am-7:18 pm

1 stop12h 03m

Ontario

Sun 6/15

9:11 pm-9:47 am

1 stop11h 36m

$421

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 5/28

4:50 pm-10:45 pm

1 stop6h 55m

Ontario

Thu 6/26

5:05 am-8:44 pm

2 stops14h 39m

$459

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 5/30

11:29 am-9:58 pm

1 stop11h 29m

Ontario

Thu 6/5

12:59 am-1:35 pm

1 stop11h 36m

$508

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Tue 6/3

10:40 am-11:42 pm

2 stops14h 02m

Ontario

Sun 6/29

6:00 am-6:04 pm

2 stops11h 04m

$510

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 5/22

9:02 am-8:49 pm

2 stops12h 47m

Ontario

Sun 5/25

6:00 am-9:45 pm

2 stops14h 45m

$587

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 5/28

6:01 pm-11:13 pm

1 stop6h 12m

$198

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 5/28

8:30 am-7:32 pm

2 stops12h 02m

$257

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 5/28

10:00 am-9:04 pm

2 stops12h 04m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Compare providers for flights from Monterrey to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Monterrey to Ontario in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Monterrey-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Monterrey-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Monterrey-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Monterrey-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Monterrey-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Monterrey to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $246). Flying from Monterrey to Ontario in March is currently the most expensive (average of $328). 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.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 May 1, 2025.
Read through reviews of airlines operating flights from Monterrey to Ontario, such as Delta, United Airlines and American Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Volaris
6.7
Okay
1,174 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Frontier
6.0
Okay
3,287 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Monterrey to Ontario. 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 Monterrey to Ontario round-trip?

    Volaris, at $421, was found to be the cheapest airline from Monterrey to Ontario.Alternate airlines to your destination round-trip include United Airlines and American Airlines.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $246). Flying from Monterrey to Ontario in March is currently the most expensive (average of $328). 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.

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