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$190+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
MTY — ONT
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$328
(Trip.com)

One-way from

$190
(Expedia)

Popular in

June

Cheapest in

January

Average price

$264
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. 7% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/215:51 pmMTY - ONT
1 stop6h 16mVolaris
Tue 8/261:09 amONT - MTY
1 stop7h 38mVolaris
Deal found 7/28$328
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 9/117:35 amMTY - ONT
2 stops13h 58mUnited Airlines
Mon 9/156:50 pmONT - MTY
2 stops12h 47mUnited Airlines
Deal found 7/28$479
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/31:35 pmMTY - ONT
1 stop22h 25mMultiple Airlines
Sun 8/109:11 pmONT - MTY
1 stop9h 24mMultiple Airlines
Deal found 7/29$489
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/217:14 amMTY - ONT
1 stop5h 18mAmerican Airlines
Wed 8/274:54 pmONT - MTY
1 stop4h 47mAmerican Airlines
Deal found 7/28$505

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 July 30, 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

Thu 8/21

5:51 pm-11:07 pm

1 stop6h 16m

Ontario

Tue 8/26

1:09 am-9:47 am

1 stop7h 38m

$328

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 9/11

7:35 am-8:33 pm

2 stops13h 58m

Ontario

Mon 9/15

6:50 pm-8:37 am

2 stops12h 47m

$479

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 8/21

7:14 am-11:32 am

1 stop5h 18m

Ontario

Wed 8/27

4:54 pm-10:41 pm

1 stop4h 47m

$505

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 8/27

5:51 pm-11:07 pm

1 stop6h 16m

$190

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 8/27

10:00 am-8:33 pm

2 stops11h 33m

$277

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 9/5

10:32 am-10:40 pm

2 stops13h 08m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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.

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 July 30, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Monterrey to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
6.6
Okay
1,164 reviews
Delta
8.0
Very good
7,980 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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 $328, was found to be the cheapest airline from Monterrey to Ontario.Alternate airlines to your destination round-trip include United Airlines and American Airlines.

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

    To fly one-way, consider booking your trip with Volaris, which is currently one of the cheapest options available, starting at $190. United Airlines flights start at $277 while deals on Delta start at $297 one-way.

  • 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.

See more FAQs

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