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$186+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
MTY — ONT
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/205:00 pm
MTY
-
ONT
1 stop7h 52m
Volaris
Tue 2/2411:02 pm
ONT
-
MTY
1 stop6h 32m
Volaris
Deal found 1/27$311
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/122:55 pm
MTY
-
ONT
1 stop7h 16m
Volaris
Sat 2/1411:02 pm
ONT
-
MTY
1 stop6h 32m
Volaris
Deal found 1/28$325
This Cheapflightsfares deal was found by Cheapflights users on 1/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
MTY
-
ONT
1 stop7h 00m
Volaris
Tue 2/1711:02 pm
ONT
-
MTY
1 stop10h 55m
Volaris
Deal found 1/28$345
This Trip.com deal was found by Cheapflights users on 1/27. 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.
Tue 10/136:30 pm
MTY
-
ONT
1 stop5h 35m
Volaris
Wed 10/2812:59 am
ONT
-
MTY
1 stop5h 54m
Volaris
Deal found 1/27$357
This Gotogate deal was found by Cheapflights users on 1/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:30 pm
MTY
-
ONT
1 stop5h 35m
Volaris
Fri 6/2612:59 am
ONT
-
MTY
1 stop5h 54m
Volaris
Deal found 1/28$359
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Fri 3/1312:35 pm
MTY
-
ONT
1 stop10h 43m
United Airlines
Fri 3/206:15 am
ONT
-
MTY
1 stop8h 05m
United Airlines
Deal found 1/28$502
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sat 3/213:50 pm
MTY
-
ONT
1 stop7h 46m
United Airlines
Fri 4/106:05 am
ONT
-
MTY
1 stop7h 57m
United Airlines
Deal found 1/28$505
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/112:38 pm
MTY
-
ONT
1 stop9h 33m
Volaris
Sat 2/1411:02 pm
ONT
-
MTY
1 stop10h 55m
Volaris
Deal found 1/27$517
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Sun 11/14:54 pm
MTY
-
ONT
1 stop6h 27m
United Airlines
Sun 11/156:00 am
ONT
-
MTY
1 stop8h 20m
United Airlines
Deal found 1/28$535

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$311
(Cheapflightsfares)

One-way from

$186
(Super.com)

Popular in

December

Cheapest in

May

Average price

$345
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.
Search Deals
From Monterrey Gen Mariano Escobedo to Ontario
Search Deals
One-way flight from Monterrey Gen Mariano Escobedo to Ontario
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Fri 2/20

5:00 pm-10:52 pm

1 stop7h 52m

Ontario

Tue 2/24

11:02 pm-7:34 am

1 stop6h 32m

$311

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 2/12

2:55 pm-8:11 pm

1 stop7h 16m

Ontario

Sat 2/14

11:02 pm-7:34 am

1 stop6h 32m

$325

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Tue 2/17

6:00 am-11:00 am

1 stop7h 00m

Ontario

Tue 2/17

11:02 pm-11:57 am

1 stop10h 55m

$345

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 6/24

6:30 pm-11:05 pm

1 stop5h 35m

Ontario

Fri 6/26

12:59 am-7:53 am

1 stop5h 54m

$359

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Sat 3/14

12:35 pm-10:18 pm

1 stop10h 43m

Ontario

Sat 3/21

6:15 am-3:20 pm

1 stop8h 05m

$502

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 3/13

12:35 pm-10:18 pm

1 stop10h 43m

Ontario

Fri 3/20

6:15 am-3:20 pm

1 stop8h 05m

$502

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Sat 3/21

3:50 pm-10:36 pm

1 stop7h 46m

Ontario

Fri 4/10

6:05 am-3:02 pm

1 stop7h 57m

$505

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Fri 7/10

12:10 pm-9:21 pm

1 stop10h 11m

Ontario

Wed 7/15

6:00 am-3:39 pm

1 stop8h 39m

$674

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Wed 2/11

5:00 pm-10:52 pm

1 stop7h 52m

$188

MonterreyOntario

MTY - ONT

MTYONT

Monterrey Gen Mariano Escobedo

Thu 6/25

6:30 pm-11:05 pm

1 stop5h 35m

$220

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 17 results
1
2
  • 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 FlightHub the most. FlightHub 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, March is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $176). 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 $311, Volaris can have you in Ontario from Monterrey in 7h 52m. The distance from Monterrey to Ontario is about 1190 mi.

  • 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, March is the cheapest month in which you can book a flight from Monterrey to Ontario (average of $176). 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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