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Mexico City

$126+ Cheap flights from Ontario (ONT) to Mexico City (MEX)

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find cheap flights from Ontario to Mexico City with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Ontario to Mexico City Benito Juarez are usually found in April or February, booked 88 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Ontario to Mexico City

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Mexico City (MEX). 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 October 29, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$325
(Kiwi.com)

One-way from

$126
(CheapOair)

Popular in

December

Cheapest in

April

Average price

$391
Provider with most accurate pricing for Ontario-Mexico City Benito Juarez flight deals.
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Provider most trusted by Cheapflights users for Ontario-Mexico City Benito Juarez flights.
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From Ontario to Mexico City Benito Juarez
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One-way flight from Ontario to Mexico City Benito Juarez
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Highest demand for flights based on searches. 11% potential increase in price ($54 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 Ontario to Mexico City

Cheapest flights from Ontario to Mexico City
Explore the most affordable flight options available from Ontario to Mexico City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Sun 12/76:20 amMEX - ONT
1 stop12h 13mMultiple Airlines
Deal found 10/28$325
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:05 pmONT - MEX
1 stop20h 15mMultiple Airlines
Sun 12/76:20 amMEX - ONT
1 stop12h 13mMultiple Airlines
Deal found 10/28$326
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Mon 12/88:10 amMEX - ONT
1 stop8h 15mMultiple Airlines
Deal found 10/28$331
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Thu 12/412:04 pmONT - MEX
1 stop27h 01mMultiple Airlines
Sun 12/76:20 amMEX - ONT
1 stop12h 13mMultiple Airlines
Deal found 10/27$333
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Sun 12/76:20 amMEX - ONT
1 stop12h 13mMultiple Airlines
Deal found 10/28$337
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 11/101:46 pmONT - MEX
1 stop30h 14mMultiple Airlines
Mon 11/176:20 amMEX - ONT
1 stop14h 29mMultiple Airlines
Deal found 10/27$339
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - MEX
2 stops13h 30mMultiple Airlines
Mon 12/88:10 amMEX - ONT
1 stop8h 15mMultiple Airlines
Deal found 10/28$345
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Mon 12/88:10 amMEX - ONT
1 stop8h 15mMultiple Airlines
Deal found 10/28$347
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - MEX
2 stops13h 30mMultiple Airlines
Tue 12/911:55 amMEX - ONT
1 stop11h 22mMultiple Airlines
Deal found 10/28$348
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:15 amONT - MEX
1 stop11h 50mMultiple Airlines
Tue 12/911:55 amMEX - ONT
1 stop11h 22mMultiple Airlines
Deal found 10/28$350
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:15 amONT - MEX
2 stops13h 30mMultiple Airlines
Wed 12/1011:55 amMEX - ONT
1 stop11h 22mMultiple Airlines
Deal found 10/28$353

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Mexico City 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 October 29, 2025.
Use the filters below to find and compare flights from Ontario to Mexico City that are best for you.

Fly from

Ontario

Fly to

Mexico City

Route

Depart

Return

Price

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Sun 11/30

12:58 am-5:05 pm

1 stop14h 07m

Mexico City Benito Juarez

Sat 12/6

3:45 pm-3:06 pm

2 stops25h 21m

$530

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Tue 11/4

6:00 am-2:50 pm

1 stop6h 50m

Mexico City Benito Juarez

Mon 11/24

12:30 pm-11:04 pm

1 stop12h 34m

$579

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Tue 11/4

10:00 pm-3:30 pm

1 stop15h 30m

Mexico City Benito Juarez

Thu 11/20

2:10 pm-11:04 pm

1 stop10h 54m

$579

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Fri 11/7

10:00 pm-3:30 pm

1 stop15h 30m

Mexico City Benito Juarez

Wed 11/19

2:10 pm-11:04 pm

1 stop10h 54m

$599

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Sun 11/9

10:25 pm-11:15 am

1 stop10h 50m

Mexico City Benito Juarez

Sat 11/22

4:05 pm-9:49 pm

1 stop7h 44m

$599

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Fri 11/14

6:00 am-10:10 pm

2 stops14h 10m

Mexico City Benito Juarez

Mon 11/17

8:35 am-11:04 pm

2 stops16h 29m

$604

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Fri 11/7

10:00 pm-3:30 pm

1 stop15h 30m

Mexico City Benito Juarez

Fri 11/21

4:05 pm-11:52 pm

1 stop9h 47m

$619

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Fri 11/7

7:05 am-10:10 pm

2 stops13h 05m

Mexico City Benito Juarez

Sun 11/16

9:25 am-11:52 pm

2 stops16h 27m

$624

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Thu 12/4

1:34 pm-12:10 am

2 stops8h 36m

Mexico City Benito Juarez

Sun 12/21

12:25 pm-9:52 pm

1 stop11h 27m

$681

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Mon 11/3

1:29 pm-10:30 pm

1 stop7h 01m

Mexico City Benito Juarez

Thu 11/20

3:20 pm-9:49 pm

1 stop8h 29m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 21 results
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Compare providers for flights from Ontario to Mexico City

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Mexico City. Price data was last updated on October 24, 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Mexico City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Mexico City (average of $82). Flying from Ontario to Mexico City in July is currently the most expensive (average of $269). 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.

What is the cheapest time of day to fly from ONT to MEX?

Find hourly flight availability from Ontario to Mexico City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 51% on flights from Ontario to Mexico City by exploring options for tickets in the afternoon.

Reviews of airlines servicing Mexico City

Get insights into the airlines that provide service to Mexico City. 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 Mexico City. Reviews last updated October 29, 2025.
Peruse reviews from past customers who have flown with American Airlines, Viva, and Volaris from Ontario to Mexico City to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
American Airlines
7.2
Good
11,032 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Viva
7.0
Good
791 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac
Volaris
6.7
Okay
1,151 reviews
American Airlines
7.2
Good
11,032 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Crew

8.0

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Jeremy,Sep 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Related info for your journey

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

    A quick flight from Ontario to Mexico City can take about 6h 50m. Frontier provides one of the quickest options available for as low as $579. The distance from Ontario to Mexico City is about 1520 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Viva is currently your cheapest option to Mexico City, with prices starting at $228. Additional round-trip tickets that might be worth considering are offered by Volaris and American Airlines, with the lowest prices starting at $281 and $536, respectively. These flights start at 43% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Ontario to Mexico City (average of $82). Flying from Ontario to Mexico City in July is currently the most expensive (average of $269). 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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Top 3 airlines flying from Ontario to Mexico City

Discover the top 3 airlines that operate flights from Ontario to Mexico City. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
VivaCheapest$228Average$248FlexibilityNo cancel feeOn-timeN/A
VolarisCheapest$281Average$384FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$536Average$677FlexibilityNo cancel feeOn-time71%

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