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Ontario

$194+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap 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 December 23, 2025.

This Trip.com deal was found by Cheapflights users on 12/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:10 pmMEX - ONT
1 stop6h 34mVolaris
Sat 1/1712:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 12/19$420
This Trip.com deal was found by Cheapflights users on 12/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:10 pmMEX - ONT
1 stop6h 34mVolaris
Sun 1/1112:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 12/20$513
This Trip.com deal was found by Cheapflights users on 12/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:10 pmMEX - ONT
1 stop6h 34mVolaris
Fri 1/911:02 pmONT - MEX
1 stop6h 43mVolaris
Deal found 12/20$523
This United Airlines deal was found by Cheapflights users on 12/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:10 amMEX - ONT
1 stop18h 31mUnited Airlines
Mon 1/56:39 pmONT - MEX
1 stop8h 26mUnited Airlines
Deal found 12/22$539
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:45 amMEX - ONT
2 stops17h 22mUnited Airlines
Thu 1/18:11 amONT - MEX
1 stop9h 24mUnited Airlines
Deal found 12/20$540
This Trip.com deal was found by Cheapflights users on 12/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:10 pmMEX - ONT
1 stop6h 34mVolaris
Fri 1/212:42 amONT - MEX
1 stop6h 43mVolaris
Deal found 12/21$549
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:10 amMEX - ONT
1 stop29h 49mUnited Airlines
Mon 12/296:04 amONT - MEX
1 stop8h 41mUnited Airlines
Deal found 12/21$559
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/271:50 pmMEX - ONT
1 stop10h 51mUnited Airlines
Mon 12/295:05 amONT - MEX
1 stop15h 25mUnited Airlines
Deal found 12/20$560
This Frontier deal was found by Cheapflights users on 12/21. 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.
Tue 12/2311:55 amMEX - ONT
1 stop11h 22mFrontier
Sun 1/118:31 amONT - MEX
1 stop11h 59mFrontier
Deal found 12/21$568
This United Airlines deal was found by Cheapflights users on 12/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:10 amMEX - ONT
1 stop18h 31mUnited Airlines
Sun 1/46:00 amONT - MEX
1 stop21h 05mUnited Airlines
Deal found 12/22$580
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:25 pmMEX - ONT
1 stop11h 27mUnited Airlines
Sat 1/36:00 amONT - MEX
1 stop9h 10mUnited Airlines
Deal found 12/20$581

Find 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 December 23, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$292
(Kissandfly.com)

One-way from

$194
(Jettzy)

Popular in

December

Cheapest in

January

Average price

$528
Provider with most accurate pricing for Mexico City Benito Juarez-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Mexico City Benito Juarez-Ontario flights.
Search Deals
From Mexico City Benito Juarez to Ontario
Search Deals
One-way flight from Mexico City Benito Juarez to Ontario
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 23, 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

Wed 2/4

4:45 pm-10:52 pm

1 stop8h 07m

Ontario

Wed 2/18

11:02 pm-7:45 am

1 stop6h 43m

$305

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 1/21

8:10 am-3:07 pm

1 stop8h 57m

Ontario

Sat 2/21

8:21 am-10:45 am

2 stops24h 24m

$347

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 2/26

12:05 pm-8:11 pm

1 stop10h 06m

Ontario

Sun 3/1

11:02 pm-7:45 am

1 stop6h 43m

$368

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 3/20

12:05 pm-8:11 pm

1 stop9h 06m

Ontario

Sun 3/22

12:42 am-7:45 am

1 stop6h 03m

$374

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 2/5

2:10 pm-6:44 pm

1 stop6h 34m

Ontario

Thu 2/19

11:02 pm-7:45 am

1 stop6h 43m

$389

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 1/23

11:55 am-7:53 pm

1 stop9h 58m

Ontario

Sun 2/1

6:20 am-5:05 pm

1 stop8h 45m

$405

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 1/24

11:55 am-6:40 pm

1 stop8h 45m

Ontario

Mon 2/2

6:20 am-5:05 pm

1 stop8h 45m

$414

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sun 1/11

8:00 am-4:20 pm

1 stop10h 20m

Ontario

Sun 1/18

7:56 pm-5:05 pm

2 stops19h 09m

$442

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 1/19

7:00 am-5:44 pm

2 stops12h 44m

Ontario

Mon 1/26

6:20 am-5:05 pm

1 stop8h 45m

$443

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 1/12

8:00 am-2:51 pm

1 stop8h 51m

Ontario

Wed 1/14

7:15 am-10:30 pm

2 stops13h 15m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

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 December.
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

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 $132). 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 December 23, 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
1,163 reviews

Overall

6.6

Boarding

6.6

Comfort

6.3

Crew

7.3

Entertainment

5.0

Food

5.3

Reviews

1 / 20
2.0
Mediocre

eddy,Dec 2025

CEN - TIJ

The lady at the counter on cd obregon was airport for volaris was very rude, I wish I caught her name to report her. Made me feel very uncomfortable and respond and get on her level but I'm better than that!
Volaris
6.6
Okay
1,163 reviews
Volaris
6.6
Okay
1,163 reviews

Overall

6.6

Boarding

6.6

Comfort

6.3

Crew

7.3

Entertainment

5.0

Food

5.3

Reviews

1 / 20
2.0
Mediocre

eddy,Dec 2025

CEN - TIJ

The lady at the counter on cd obregon was airport for volaris was very rude, I wish I caught her name to report her. Made me feel very uncomfortable and respond and get on her level but I'm better than that!

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?

    Volaris and Frontier can get you from Mexico City to Ontario in just under 8h 07m. Your travel time can differ by up to 50m. 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 $316, was found to be the cheapest airline from Mexico City to Ontario.. Volaris is priced at 21% 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 $132). 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$316Average$379FlexibilityNo cancel feeOn-time79%

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