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$193+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
nov. 21 — nov. 281
vie. 11/21
vie. 11/28
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 octubre 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$318
(Mytrip)

One-way from

$193
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$391
Provider with most accurate pricing for Mexico City Benito Juarez-Ontario flight deals.
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Provider most trusted by Cheapflights users for Mexico City Benito Juarez-Ontario flights.
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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. 1% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 22, 2025.

This Frontier deal was found by Cheapflights users on 10/21. 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.
mar. 10/2811:55 amMEX - ONT
1 stop9h 47mFrontier
dom. 11/167:22 amONT - MEX
1 stop13h 08mFrontier
Deal found 10/21$321
This OneTravel deal was found by Cheapflights users on 10/20. 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.
mié. 11/194:45 pmMEX - ONT
1 stop8h 07mVolaris
dom. 11/2312:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 10/20$329
This Frontier deal was found by Cheapflights users on 10/22. 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.
sáb. 11/88:10 amMEX - ONT
2 stops14h 32mFrontier
mar. 11/118:00 amONT - MEX
1 stop11h 10mFrontier
Deal found 10/22$330
This Frontier deal was found by Cheapflights users on 10/21. 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.
mar. 10/2811:55 amMEX - ONT
1 stop9h 47mFrontier
sáb. 11/156:53 amONT - MEX
2 stops12h 52mFrontier
Deal found 10/21$331
This Kissandfly.com deal was found by Cheapflights users on 10/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/224:45 pmMEX - ONT
1 stop8h 07mVolaris
vie. 11/2811:02 pmONT - MEX
1 stop8h 23mVolaris
Deal found 10/20$338
This Frontier deal was found by Cheapflights users on 10/20. 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.
jue. 11/68:10 amMEX - ONT
2 stops15h 47mFrontier
mar. 11/118:00 amONT - MEX
1 stop11h 10mFrontier
Deal found 10/20$340
This Booking.com deal was found by Cheapflights users on 10/20. 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.
vie. 11/144:45 pmMEX - ONT
1 stop8h 07mVolaris
lun. 11/1712:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 10/20$341
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
vie. 12/58:10 amMEX - ONT
1 stop8h 15mMultiple Airlines
mar. 12/96:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Deal found 10/19$345
This OneTravel deal was found by Cheapflights users on 10/21. 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.
vie. 11/214:45 pmMEX - ONT
1 stop8h 07mVolaris
vie. 11/2812:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 10/21$348
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/712:05 pmMEX - ONT
1 stop10h 06mVolaris
lun. 11/1712:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 10/20$349
This Frontier deal was found by Cheapflights users on 10/19. 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.
sáb. 11/18:00 amMEX - ONT
2 stops13h 42mFrontier
dom. 11/97:17 amONT - MEX
1 stop13h 13mFrontier
Deal found 10/19$351
This Frontier deal was found by Cheapflights users on 10/19. 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.
dom. 11/98:10 amMEX - ONT
2 stops15h 55mFrontier
mar. 11/118:00 amONT - MEX
1 stop11h 10mFrontier
Deal found 10/19$352

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 octubre 22, 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

mié. 12/24

7:00 am-3:46 pm

1 stop10h 46m

Ontario

mié. 1/21

8:30 am-9:10 pm

1 stop10h 40m

$377

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

jue. 11/6

8:10 am-9:57 pm

2 stops15h 47m

Ontario

mar. 11/11

8:00 am-9:10 pm

1 stop11h 10m

$384

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

mié. 12/10

2:10 pm-6:44 pm

1 stop6h 34m

Ontario

sáb. 12/13

11:34 pm-9:25 am

1 stop7h 51m

$393

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

jue. 12/25

7:00 am-3:21 pm

1 stop10h 21m

Ontario

vie. 1/9

6:30 am-9:10 pm

1 stop12h 40m

$397

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

mar. 12/23

7:00 am-3:46 pm

1 stop10h 46m

Ontario

vie. 1/9

6:30 am-9:45 pm

2 stops13h 15m

$401

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

mié. 11/5

11:55 am-8:42 pm

1 stop10h 47m

Ontario

jue. 11/6

6:00 am-9:45 pm

2 stops13h 45m

$414

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

sáb. 11/1

8:00 am-11:50 pm

2 stops16h 50m

Ontario

mié. 11/12

8:00 am-9:10 pm

1 stop11h 10m

$415

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

jue. 11/20

8:10 am-9:06 pm

2 stops14h 56m

Ontario

mar. 1/6

8:00 am-10:30 pm

2 stops12h 30m

$415

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

jue. 11/6

8:10 am-9:57 pm

2 stops15h 47m

Ontario

jue. 11/13

6:00 am-10:00 pm

2 stops14h 00m

$417

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

vie. 11/7

8:10 am-9:57 pm

2 stops15h 47m

Ontario

mié. 11/12

8:00 am-9:10 pm

1 stop11h 10m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 22 results
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Compare providers for flights from Mexico City 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 Mexico City to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice 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 Mexico City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Mexico City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Mexico City-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Mexico City-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 Mexico City-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 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

How far ahead should I book a flight from Mexico City to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Mexico City to Ontario. Price data was last updated on October 17, 2025.

The best time to book flights from Mexico City to Ontario is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $134). Flying from Mexico City to Ontario in June is currently the most expensive (average of $231). 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 octubre 22, 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
6.7
Okay
1,152 reviews

Crew

7.3

Boarding

6.6

Entertainment

5.0

Overall

6.7

Comfort

6.4

Food

5.3

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
6.7
Okay
1,152 reviews
Volaris
6.7
Okay
1,152 reviews

Crew

7.3

Boarding

6.6

Entertainment

5.0

Overall

6.7

Comfort

6.4

Food

5.3

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 and Volaris can get you from Mexico City to Ontario in just under 6h 34m. Your travel time can differ by up to 4h 12m. Airlines will cover a distance of 1520 mi. This flight may include one or multiple stops.

  • 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 33% 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 $134). Flying from Mexico City to Ontario in June is currently the most expensive (average of $231). 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 octubre 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$278Average$360FlexibilityNo cancel feeOn-time79%

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