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$197+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
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 July 24, 2026.

This Frontier deal was found by Cheapflights users on 7/20. 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.
Tue 10/611:55 am
MEX
-
ONT
1 stop9h 59m
Frontier
Tue 10/206:00 am
ONT
-
MEX
1 stop10h 30m
Frontier
Deal found 7/20$308
This Frontier deal was found by Cheapflights users on 7/20. 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.
Mon 10/2612:05 pm
MEX
-
ONT
1 stop8h 54m
Frontier
Tue 10/276:15 am
ONT
-
MEX
1 stop9h 45m
Frontier
Deal found 7/20$331
This Frontier deal was found by Cheapflights users on 7/23. 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 10/611:55 am
MEX
-
ONT
1 stop9h 59m
Frontier
Thu 10/156:00 am
ONT
-
MEX
1 stop10h 30m
Frontier
Deal found 7/23$333
This Travelocity deal was found by Cheapflights users on 7/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:10 pm
MEX
-
ONT
1 stop16h 22m
Frontier
Tue 9/158:07 am
ONT
-
MEX
1 stop13h 38m
Frontier
Deal found 7/19$338
This CheapOair deal was found by Cheapflights users on 7/24. 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.
Wed 8/194:35 pm
MEX
-
ONT
1 stop7h 30m
Volaris
Wed 8/269:36 pm
ONT
-
MEX
1 stop8h 49m
Volaris
Deal found 7/24$344
This CheapOair deal was found by Cheapflights users on 7/24. 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.
Thu 8/274:35 pm
MEX
-
ONT
1 stop7h 30m
Volaris
Sat 9/512:55 am
ONT
-
MEX
1 stop11h 30m
Volaris
Deal found 7/24$346
This CheapOair deal was found by Cheapflights users on 7/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/94:35 pm
MEX
-
ONT
1 stop7h 30m
Volaris
Wed 9/169:36 pm
ONT
-
MEX
1 stop8h 49m
Volaris
Deal found 7/22$348
This Frontier deal was found by Cheapflights users on 7/23. 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 9/107:00 am
MEX
-
ONT
2 stops14h 17m
Frontier
Tue 9/298:07 am
ONT
-
MEX
1 stop13h 38m
Frontier
Deal found 7/23$350
This OneTravel deal was found by Cheapflights users on 7/24. 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.
Sat 8/224:35 pm
MEX
-
ONT
1 stop7h 30m
Volaris
Sat 8/299:36 pm
ONT
-
MEX
1 stop11h 09m
Volaris
Deal found 7/24$351
This CheapOair deal was found by Cheapflights users on 7/24. 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.
Sun 8/2310:00 am
MEX
-
ONT
1 stop10h 46m
Volaris
Sun 8/309:36 pm
ONT
-
MEX
1 stop8h 49m
Volaris
Deal found 7/24$352
This Frontier deal was found by Cheapflights users on 7/20. 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.
Mon 10/2612:05 pm
MEX
-
ONT
1 stop8h 54m
Frontier
Mon 11/96:15 am
ONT
-
MEX
1 stop8h 45m
Frontier
Deal found 7/20$354

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 July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$308
(Frontier)

One-way from

$197
(Super.com)

Popular in

December

Cheapest in

January

Average price

$325
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
Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 24, 2026.
Use the filters below to find and compare flights from Mexico City to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 8/12

4:35 pm-11:05 pm

1 stop7h 30m

Ontario

Fri 8/14

9:36 pm-7:25 am

1 stop8h 49m

$412

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 9/23

4:35 pm-11:05 pm

1 stop7h 30m

Ontario

Sun 9/27

9:36 pm-7:25 am

1 stop8h 49m

$414

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Mon 8/24

12:00 pm-7:46 pm

1 stop8h 46m

Ontario

Wed 8/26

12:55 am-9:45 am

1 stop7h 50m

$424

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 9/25

10:00 am-7:46 pm

1 stop10h 46m

Ontario

Tue 9/29

12:55 am-1:25 pm

1 stop11h 30m

$428

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 8/27

8:40 am-11:50 pm

1 stop16h 10m

Ontario

Thu 9/3

9:33 am-10:15 pm

1 stop11h 42m

$430

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 8/6

8:40 am-11:50 pm

1 stop16h 10m

Ontario

Sun 8/16

9:36 pm-9:45 am

1 stop11h 09m

$475

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 7/31

4:35 pm-11:05 pm

1 stop7h 30m

Ontario

Thu 8/6

9:36 pm-7:25 am

1 stop8h 49m

$476

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 9/23

10:50 am-11:47 pm

2 stops13h 57m

Ontario

Mon 9/28

6:00 am-6:05 pm

2 stops11h 05m

$527

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Tue 9/22

4:40 am-2:01 pm

2 stops10h 21m

Ontario

Thu 9/24

5:00 am-5:50 pm

2 stops11h 50m

$527
Cheapest one-way

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 12/10

8:40 am-10:14 pm

1 stop15h 34m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust 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

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

Currently, January is the cheapest month in which you can book a flight from Mexico City to Ontario (average of $262). Flying from Mexico City to Ontario in December is currently the most expensive (average of $528). 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?

Airfare is below average for this route at the moment.

Mexico City to Ontario flights typically cost between $318 and $420 in October.
The cheapest round-trip price found within the last 5 days was $308 on Frontier (Oct 6-Oct 20).

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 July 24, 2026.
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
1,152 reviews

Boarding

6.5

Entertainment

4.9

Food

5.2

Overall

6.6

Crew

7.3

Comfort

6.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

MEX - LAX

My husband had and issue with check in through the app so we had to go to the counter and make line. We had to walk a long way to the gate. Volaris counter was in gate 2 and we had to go all the way to gate 34. It felt forever to get to our gate.
Volaris
6.6
Okay
1,152 reviews
Volaris
6.6
Okay
1,152 reviews

Boarding

6.5

Entertainment

4.9

Food

5.2

Overall

6.6

Crew

7.3

Comfort

6.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

MEX - LAX

My husband had and issue with check in through the app so we had to go to the counter and make line. We had to walk a long way to the gate. Volaris counter was in gate 2 and we had to go all the way to gate 34. It felt forever to get to our gate.

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 can get you from Mexico City to Ontario in just under 7h 30m. 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 $250, was found to be the cheapest airline from Mexico City to Ontario.. Volaris is priced at 30% 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, January is the cheapest month in which you can book a flight from Mexico City to Ontario (average of $262). Flying from Mexico City to Ontario in December is currently the most expensive (average of $528). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$250Average$330FlexibilityNo cancel feeOn-time79%

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