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$184+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$316
(Frontier)

One-way from

$184
(eDestinos)

Popular in

October

Cheapest in

January

Average price

$422
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. 9% potential increase in price ($53 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 April 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 April 22, 2025.

This Frontier deal was found by Cheapflights users on 4/21. 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 5/2711:45 amMEX - ONT
1 stop10h 04mFrontier
Wed 5/2812:40 pmONT - MEX
1 stop8h 20mFrontier
Deal found 4/21$316
This Justfly.com deal was found by Cheapflights users on 4/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1612:00 pmMEX - ONT
1 stop8h 18mVolaris
Thu 8/1412:40 pmONT - MEX
1 stop10h 05mVolaris
Deal found 4/21$403
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:45 amMEX - ONT
1 stop10h 04mMultiple Airlines
Thu 6/129:11 pmONT - MEX
1 stop23h 29mMultiple Airlines
Deal found 4/20$442
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Mon 4/289:35 amMEX - ONT
1 stop13h 23mUnited Airlines
Mon 5/266:00 amONT - MEX
1 stop10h 50mUnited Airlines
Deal found 4/22$449
This Avianca deal was found by Cheapflights users on 4/21. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/135:00 amMEX - ONT
3 stops17h 55mAvianca
Tue 5/2011:25 pmONT - MEX
1 stop10h 30mAvianca
Deal found 4/21$496
This Delta deal was found by Cheapflights users on 4/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/99:50 amMEX - ONT
2 stops13h 53mDelta
Sat 8/236:00 amONT - MEX
2 stops11h 05mDelta
Deal found 4/22$533
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2111:20 amMEX - ONT
2 stops11h 18mAmerican Airlines
Mon 6/3012:59 amONT - MEX
1 stop10h 11mAmerican Airlines
Deal found 4/21$534

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 April 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

Tue 5/27

11:45 am-8:49 pm

1 stop10h 04m

Ontario

Wed 5/28

12:40 pm-10:00 pm

1 stop8h 20m

$316

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Wed 7/16

12:00 pm-7:18 pm

1 stop8h 18m

Ontario

Thu 8/14

12:40 pm-11:45 pm

1 stop10h 05m

$403

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 5/22

11:45 am-8:49 pm

1 stop10h 04m

Ontario

Thu 6/12

9:11 pm-9:40 pm

1 stop23h 29m

$442

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Thu 5/22

6:30 am-12:31 pm

2 stops31h 01m

Ontario

Thu 6/12

6:00 am-5:50 pm

1 stop10h 50m

$474

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 5/30

8:01 am-11:42 pm

2 stops16h 41m

Ontario

Wed 6/25

6:00 am-6:05 pm

2 stops11h 05m

$484

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Tue 5/13

5:00 am-9:55 pm

3 stops17h 55m

Ontario

Tue 5/20

11:25 pm-10:55 am

1 stop10h 30m

$496

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Sat 6/21

11:20 am-9:38 pm

2 stops11h 18m

Ontario

Tue 7/1

6:23 am-8:45 pm

2 stops13h 22m

$534

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Tue 6/3

3:10 pm-11:42 pm

1 stop9h 32m

Ontario

Tue 6/10

7:05 am-6:35 pm

1 stop10h 30m

$657

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 6/6

4:30 pm-11:13 pm

1 stop7h 43m

$184

Mexico CityOntario

MEX - ONT

MEXONT

Mexico City Benito Juarez

Fri 5/23

6:00 am-8:49 pm

2 stops15h 49m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 18 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Mexico City-Ontario flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 18, 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 $246). Flying from Mexico City to Ontario in March is currently the most expensive (average of $328). 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 MEX to ONT?

Find hourly flight availability from Mexico City to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Mexico City to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight at noon.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

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 April 22, 2025.
Read reviews from past customers who have flown Delta, Aeromexico and United Airlines from Mexico City to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aeromexico
7.5
Good
1,700 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,683 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,813 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Frontier, at $316, was found to be the cheapest airline from Mexico City to Ontario.Alternate airlines to your destination round-trip include Volaris and United Airlines. Frontier 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 $184. However, be on the lookout for offers from Avianca and Frontier, 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 $246). Flying from Mexico City to Ontario in March is currently the most expensive (average of $328). 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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