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$190+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$322
(FlightHub)

One-way from

$190
(Trip.com)

Popular in

October

Cheapest in

January

Average price

$433
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. 13% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This FlightHub deal was found by Cheapflights users on 6/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:00 pmMEX - ONT
1 stop10h 11mVolaris
Mon 11/101:02 amONT - MEX
1 stop6h 43mVolaris
Deal found 6/28$322
This Frontier deal was found by Cheapflights users on 6/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1211:45 amMEX - ONT
1 stop11h 07mFrontier
Mon 9/112:46 pmONT - MEX
1 stop8h 14mFrontier
Deal found 6/27$329
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:20 amMEX - ONT
1 stop13h 14mMultiple Airlines
Mon 9/112:46 pmONT - MEX
1 stop8h 14mMultiple Airlines
Deal found 6/27$384

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 June 30, 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

Thu 11/6

12:00 pm-8:11 pm

1 stop10h 11m

Ontario

Mon 11/10

1:02 am-9:45 am

1 stop6h 43m

$322

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Tue 8/12

11:45 am-9:52 pm

1 stop11h 07m

Ontario

Mon 9/1

12:46 pm-10:00 pm

1 stop8h 14m

$329

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 8/29

6:20 am-6:34 pm

1 stop13h 14m

Ontario

Mon 9/1

12:46 pm-10:00 pm

1 stop8h 14m

$384

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 10/1

4:30 pm-11:13 pm

1 stop7h 43m

$190

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Tue 11/4

11:45 am-8:42 pm

1 stop10h 57m

$194

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 8/16

5:00 am-9:55 pm

3 stops17h 55m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 $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.

How much does it cost to fly round-trip from Mexico City to Ontario?

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 June 30, 2025.
See what other customers who have flown with Avianca, Volaris, and Frontier 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.
Avianca
6.7
Okay
2,359 reviews

Entertainment

5.4

Overall

6.7

Crew

7.2

Comfort

6.3

Boarding

7.0

Food

5.1

Reviews

1 / 20
2.0
Mediocre

Diego,Jan 2025

SAL - MIA

Baggage could have easily be another ticket to go to Asia. Insane how much Avianca charges for each luggage and extremely poor service. Will not recommend this airline to anyone
Avianca
6.7
Okay
2,359 reviews
Avianca
6.7
Okay
2,359 reviews

Entertainment

5.4

Overall

6.7

Crew

7.2

Comfort

6.3

Boarding

7.0

Food

5.1

Reviews

1 / 20
2.0
Mediocre

Diego,Jan 2025

SAL - MIA

Baggage could have easily be another ticket to go to Asia. Insane how much Avianca charges for each luggage and extremely poor service. Will not recommend this airline to anyone
Volaris
6.7
Okay
1,172 reviews
Avianca
6.7
Okay
2,359 reviews

Entertainment

5.4

Overall

6.7

Crew

7.2

Comfort

6.3

Boarding

7.0

Food

5.1

Reviews

1 / 20
2.0
Mediocre

Diego,Jan 2025

SAL - MIA

Baggage could have easily be another ticket to go to Asia. Insane how much Avianca charges for each luggage and extremely poor service. Will not recommend this airline to anyone
Frontier
5.9
Fair
3,290 reviews
Avianca
6.7
Okay
2,359 reviews

Entertainment

5.4

Overall

6.7

Crew

7.2

Comfort

6.3

Boarding

7.0

Food

5.1

Reviews

1 / 20
2.0
Mediocre

Diego,Jan 2025

SAL - MIA

Baggage could have easily be another ticket to go to Asia. Insane how much Avianca charges for each luggage and extremely poor service. Will not recommend this airline to anyone

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.

  • What are the cheapest airlines flying from Mexico City to Ontario round-trip?

    Volaris, at $322, was found to be the cheapest airline from Mexico City to Ontario. An alternate airline flying to your destination would be Frontier. Volaris is priced at 34% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Volaris, with whom users have recently found tickets for as low as $190. However, be on the lookout for offers from Frontier and Avianca, as they are both options that can get you from Mexico City to Ontario for a low price.

  • 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 $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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