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$198+ Cheap flights from Mexico City (MEX) 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Mexico City to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Mexico City (MEX) 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 September 17, 2025.

Round-trip from

$325
(OneTravel)

One-way from

$198
(OneTravel)

Popular in

November

Cheapest in

September

Average price

$317
From Mexico City Benito Juarez to Ontario
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One-way flight from Mexico City Benito Juarez to Ontario
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Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Mexico City to Ontario

Cheapest flights from Mexico City to Ontario
Explore the most affordable flight options available from Mexico City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This OneTravel deal was found by Cheapflights users on 9/16. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:10 pmMEX - ONT
1 stop6h 34mVolaris
Sun 4/2612:50 pmONT - MEX
1 stop9h 55mVolaris
Deal found 9/16$325
This Frontier deal was found by Cheapflights users on 9/15. 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.
Tue 10/1411:45 amMEX - ONT
1 stop9h 57mFrontier
Tue 10/217:04 amONT - MEX
1 stop8h 56mFrontier
Deal found 9/15$329
This Frontier deal was found by Cheapflights users on 9/15. 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 10/111:45 amMEX - ONT
1 stop11h 11mFrontier
Wed 10/86:53 amONT - MEX
1 stop9h 07mFrontier
Deal found 9/15$338
This Frontier deal was found by Cheapflights users on 9/15. 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.
Thu 10/27:55 amMEX - ONT
2 stops14h 01mFrontier
Wed 10/86:53 amONT - MEX
1 stop9h 07mFrontier
Deal found 9/15$343
This Frontier deal was found by Cheapflights users on 9/15. 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.
Sat 10/411:45 amMEX - ONT
1 stop11h 11mFrontier
Sun 10/57:15 pmONT - MEX
2 stops20h 45mFrontier
Deal found 9/15$345
This Frontier deal was found by Cheapflights users on 9/16. 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.
Sat 10/257:55 amMEX - ONT
2 stops16h 55mFrontier
Thu 11/1311:59 amONT - MEX
1 stop8h 31mFrontier
Deal found 9/16$350
This eDestinos deal was found by Cheapflights users on 9/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:30 pmMEX - ONT
1 stop7h 43mVolaris
Mon 10/612:40 pmONT - MEX
1 stop10h 05mVolaris
Deal found 9/15$351
This Frontier deal was found by Cheapflights users on 9/16. 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.
Tue 10/217:55 amMEX - ONT
2 stops16h 55mFrontier
Sat 10/258:00 amONT - MEX
1 stop12h 10mFrontier
Deal found 9/16$352
This Frontier deal was found by Cheapflights users on 9/16. 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 10/227:55 amMEX - ONT
2 stops16h 55mFrontier
Sat 10/258:00 amONT - MEX
1 stop12h 10mFrontier
Deal found 9/16$353
This OneTravel deal was found by Cheapflights users on 9/15. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/24:30 pmMEX - ONT
1 stop7h 43mVolaris
Sat 10/412:40 pmONT - MEX
1 stop10h 05mVolaris
Deal found 9/15$358

Cheapflights Fare Finder

 
Customize your flight search to find flights from Mexico City 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 September 17, 2025.
Use the filters below to find and compare flights from Mexico City to Ontario that are best for you.

Fly from

Mexico City

Fly to

Ontario

Route

Depart

Return

Price

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 10/4

11:45 am-9:56 pm

1 stop11h 11m

Ontario

Sun 10/5

7:15 pm-5:00 pm

2 stops20h 45m

$345

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 10/2

7:55 am-8:56 pm

2 stops14h 01m

Ontario

Wed 10/8

8:00 am-9:10 pm

1 stop12h 10m

$346

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 9/29

11:45 am-8:56 pm

1 stop10h 11m

Ontario

Sun 10/5

7:15 pm-5:00 pm

2 stops20h 45m

$364

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 11/1

11:55 am-8:42 pm

1 stop9h 47m

Ontario

Sat 11/8

8:00 am-9:45 pm

2 stops11h 45m

$365

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 12/5

7:00 am-5:55 pm

1 stop12h 55m

Ontario

Wed 12/10

6:30 am-9:10 pm

1 stop12h 40m

$369

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 10/2

7:55 am-8:56 pm

2 stops14h 01m

Ontario

Sun 10/5

7:15 pm-5:00 pm

2 stops20h 45m

$369

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 10/2

7:55 am-8:56 pm

2 stops14h 01m

Ontario

Mon 10/6

12:13 pm-10:55 pm

1 stop9h 42m

$394

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 10/24

4:30 pm-11:13 pm

1 stop7h 43m

Ontario

Sun 10/26

9:11 pm-9:25 am

1 stop11h 14m

$401

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 11/5

4:45 pm-11:12 pm

1 stop8h 27m

Ontario

Tue 11/11

1:02 am-9:25 am

1 stop6h 23m

$402

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 11/3

8:10 am-9:55 pm

2 stops15h 45m

Ontario

Wed 11/5

8:00 am-9:10 pm

1 stop11h 10m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 21 results
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Best time to book a flight from Mexico City to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Mexico City to Ontario (average of $246). Flying from Mexico City to Ontario in March is currently the most expensive (average of $327). 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 September 17, 2025.
See what other customers who have flown with Volaris from Mexico City to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Volaris
6.6
Okay
1,154 reviews

Comfort

6.4

Boarding

6.6

Food

5.3

Crew

7.3

Entertainment

5.0

Overall

6.6

Reviews

1 / 20
4.0
Okay

Tania,Jul 2025

OAX - MEX

They don’t even offer you water, we paid $300 usd from Oaxaca to PV and you have to pay for water, and tv entertainment. Seats are super small that a regular size person won’t fit comfortably.
Volaris
6.6
Okay
1,154 reviews
Volaris
6.6
Okay
1,154 reviews

Comfort

6.4

Boarding

6.6

Food

5.3

Crew

7.3

Entertainment

5.0

Overall

6.6

Reviews

1 / 20
4.0
Okay

Tania,Jul 2025

OAX - MEX

They don’t even offer you water, we paid $300 usd from Oaxaca to PV and you have to pay for water, and tv entertainment. Seats are super small that a regular size person won’t fit comfortably.

Related info for your journey

Find useful and relevant information for your journey from Mexico City 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 Mexico City to Ontario?

    Frontier can get you from Mexico City to Ontario in just under 11h 11m. Your travel time can differ by up to . Airlines will cover a distance of 1520 mi.

  • What is the cheapest airline to fly from Mexico City to Ontario round-trip?

    Volaris, at $278, was found to be the cheapest airline from Mexico City to Ontario.. Volaris is priced at 35% lower than the current average price of a flight leaving 3 months from now.

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

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

  • How can I find direct flights from Mexico City to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Mexico City 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 Mexico City to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Mexico City to Ontario (average of $246). Flying from Mexico City to Ontario in March is currently the most expensive (average of $327). 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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Alternative routes for Mexico City to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Mexico City to Ontario

Discover the top airline that operate flights from Mexico City to Ontario. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$278Average$434FlexibilityNo cancel feeOn-time79%

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