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$189+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$278
(Frontier)

One-way from

$189
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$419
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. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 5, 2025.

This Frontier deal was found by Cheapflights users on 11/3. 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.
Sun 12/77:00 amMEX - ONT
1 stop10h 22mFrontier
Mon 1/126:30 amONT - MEX
2 stops13h 15mFrontier
Deal found 11/3$278
This Frontier deal was found by Cheapflights users on 11/3. 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.
Sun 12/77:00 amMEX - ONT
1 stop10h 22mFrontier
Thu 1/86:30 amONT - MEX
2 stops13h 15mFrontier
Deal found 11/3$281
This Frontier deal was found by Cheapflights users on 11/3. 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 12/47:00 amMEX - ONT
1 stop13h 35mFrontier
Sun 12/76:15 amONT - MEX
2 stops13h 30mFrontier
Deal found 11/3$292
This Frontier deal was found by Cheapflights users on 11/3. 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.
Sun 12/77:00 amMEX - ONT
1 stop10h 22mFrontier
Sun 1/116:30 amONT - MEX
2 stops13h 15mFrontier
Deal found 11/3$296
This Frontier deal was found by Cheapflights users on 11/5. 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.
Mon 12/111:55 amMEX - ONT
1 stop11h 11mFrontier
Thu 12/46:15 amONT - MEX
2 stops13h 30mFrontier
Deal found 11/5$300
This Frontier deal was found by Cheapflights users on 11/3. 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 12/911:55 amMEX - ONT
1 stop11h 22mFrontier
Thu 1/86:30 amONT - MEX
2 stops13h 15mFrontier
Deal found 11/3$302
This Frontier deal was found by Cheapflights users on 11/3. 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 12/1011:55 amMEX - ONT
1 stop11h 22mFrontier
Thu 1/86:30 amONT - MEX
2 stops13h 15mFrontier
Deal found 11/3$309
This Frontier deal was found by Cheapflights users on 11/4. 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 11/198:10 amMEX - ONT
2 stops14h 32mFrontier
Fri 12/56:15 amONT - MEX
2 stops13h 30mFrontier
Deal found 11/4$316
This Frontier deal was found by Cheapflights users on 11/3. 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 12/311:55 amMEX - ONT
1 stop11h 22mFrontier
Fri 12/56:15 amONT - MEX
2 stops13h 30mFrontier
Deal found 11/3$321
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Wed 12/311:55 amMEX - ONT
1 stop11h 22mMultiple Airlines
Sun 12/72:59 pmONT - MEX
1 stop29h 01mMultiple Airlines
Deal found 11/3$325

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 November 5, 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 1/29

8:10 am-9:17 pm

2 stops15h 07m

Ontario

Wed 2/4

8:30 am-9:10 pm

1 stop10h 40m

$300

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 11/20

8:10 am-9:06 pm

2 stops14h 56m

Ontario

Wed 11/26

6:30 am-9:10 pm

1 stop12h 40m

$369

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 2/4

7:00 am-9:17 pm

2 stops16h 17m

Ontario

Wed 2/18

7:00 am-9:45 pm

2 stops12h 45m

$372

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 11/19

8:10 am-8:42 pm

2 stops14h 32m

Ontario

Wed 11/26

6:30 am-9:10 pm

1 stop12h 40m

$373

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 11/24

11:55 am-9:06 pm

1 stop11h 11m

Ontario

Wed 11/26

12:58 am-9:45 pm

2 stops18h 47m

$383

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 11/22

11:55 am-9:06 pm

1 stop11h 11m

Ontario

Wed 11/26

12:58 am-9:45 pm

2 stops18h 47m

$383

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 2/28

7:00 am-9:17 pm

2 stops16h 17m

Ontario

Sat 3/14

6:00 am-5:05 pm

1 stop10h 05m

$384

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 11/22

8:10 am-6:13 pm

1 stop12h 03m

Ontario

Sun 12/7

6:15 am-9:45 pm

2 stops13h 30m

$392

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 11/20

8:10 am-9:06 pm

2 stops14h 56m

Ontario

Sun 11/23

9:54 am-10:30 pm

1 stop10h 36m

$393

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 11/21

2:10 pm-6:44 pm

1 stop6h 34m

Ontario

Tue 11/25

12:42 am-2:25 pm

1 stop11h 43m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 24 results
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2
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Mexico City-Ontario flight deals on Cheapflights vs. eDreams >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 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 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 31, 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.

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 November 5, 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
1,151 reviews

Entertainment

5.0

Comfort

6.4

Boarding

6.6

Food

5.3

Overall

6.7

Crew

7.3

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
1,151 reviews
Volaris
6.7
Okay
1,151 reviews

Entertainment

5.0

Comfort

6.4

Boarding

6.6

Food

5.3

Overall

6.7

Crew

7.3

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 can get you from Mexico City to Ontario in just under 15h 07m. 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 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 $245. However, be on the lookout for offers from Frontier and United Airlines, 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 $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.

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$278Average$341FlexibilityNo cancel feeOn-time79%

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