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$175+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
MTY — ONT
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This Trip.com deal was found by Cheapflights users on 12/13. 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.
Fri 12/262:55 pmMTY - ONT
1 stop7h 16mVolaris
Tue 12/3011:02 pmONT - MTY
1 stop6h 32mVolaris
Deal found 12/13$425
This Trip.com deal was found by Cheapflights users on 12/14. 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.
Wed 12/1712:38 pmMTY - ONT
1 stop9h 33mVolaris
Fri 12/1911:59 pmONT - MTY
1 stop7h 15mVolaris
Deal found 12/14$620
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/268:50 amMTY - ONT
2 stops15h 35mUnited Airlines
Tue 12/306:04 amONT - MTY
1 stop13h 41mUnited Airlines
Deal found 12/13$632
This Trip.com deal was found by Cheapflights users on 12/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:55 pmMTY - ONT
1 stop7h 16mVolaris
Mon 12/2211:59 pmONT - MTY
1 stop7h 15mVolaris
Deal found 12/12$647
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/174:54 pmMTY - ONT
2 stops21h 44mUnited Airlines
Fri 12/191:40 pmONT - MTY
2 stops18h 00mUnited Airlines
Deal found 12/14$675
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/214:54 pmMTY - ONT
1 stop6h 58mUnited Airlines
Mon 12/226:00 amONT - MTY
1 stop8h 20mUnited Airlines
Deal found 12/13$855

Find 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$290
(Trip.com)

One-way from

$174
(Booking.com)

Popular in

December

Cheapest in

March

Average price

$370
Provider with most accurate pricing for Monterrey Gen Mariano Escobedo-Ontario flight deals.
Search Deals
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
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($54 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 15, 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

Tue 1/20

12:38 pm-10:52 pm

1 stop12h 14m

Ontario

Thu 2/5

11:02 pm-7:34 am

1 stop6h 32m

$290

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 1/28

4:50 pm-9:58 pm

1 stop7h 08m

Ontario

Wed 2/4

6:00 am-4:20 pm

1 stop8h 20m

$408

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 12/26

2:55 pm-8:11 pm

1 stop7h 16m

Ontario

Tue 12/30

11:02 pm-7:34 am

1 stop6h 32m

$425

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 1/23

6:30 am-9:58 pm

1 stop17h 28m

Ontario

Mon 1/26

6:00 am-4:20 pm

1 stop8h 20m

$429

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Sat 1/10

6:00 pm-12:47 pm

2 stops20h 47m

Ontario

Sat 1/17

5:05 am-4:06 pm

2 stops9h 01m

$449

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 1/22

6:00 am-11:00 am

1 stop7h 00m

$175

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 1/1

6:00 am-11:00 am

1 stop7h 00m

$247

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Sat 12/20

6:00 am-10:41 pm

1 stop18h 41m

$272

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 1/22

8:50 am-8:58 pm

2 stops14h 08m

$334

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 1/14

6:30 am-5:43 pm

2 stops13h 13m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 15 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Monterrey-Ontario flight deals on Cheapflights vs. eDreams >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, February is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $151). Flying from Monterrey to Ontario in July is currently the most expensive (average of $211). 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.

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.

  • How long is the flight from Monterrey to Ontario?

    For as low as $408, Volaris can have you in Ontario from Monterrey in 7h 08m. The distance from Monterrey to Ontario is about 1190 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, February is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $151). Flying from Monterrey to Ontario in July is currently the most expensive (average of $211). 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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