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$39+ Cheap flights from Ontario (ONT) to Mexico

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Cheap flight deals from Ontario to Mexico

Keep the following information in mind while searching for Ontario to Mexico flight deals. Data was last updated November 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$176
(CheapOair)

One-way from

$39
(Mytrip)

Popular in

December

Cheapest in

March

Average price

$396

Good round-trip deal

$179 or less

Good one-way deal

$43 or less
Provider with most accurate pricing for Los Angeles-Mexico City Benito Juarez flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Mexico City Benito Juarez flights.
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From Ontario to Mexico
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One-way flight from Ontario to Mexico
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Highest demand for flights based on searches. 12% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Ontario to Mexico.
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Price to beat on a one-way flight from Ontario to Mexico.
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Find flight deals from Ontario to Mexico

Cheapest flights from Ontario to Mexico
Explore the most affordable flight options available from Ontario to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.

This CheapOair deal was found by Cheapflights users on 11/18. 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 12/712:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 12/125:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/18$178
This Flightnetwork deal was found by Cheapflights users on 11/18. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:50 pmONT - SJD
Nonstop2h 22mVolaris
Thu 12/185:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/18$207
This CheapOair deal was found by Cheapflights users on 11/17. 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.
Sat 11/2912:50 pmONT - SJD
Nonstop2h 22mVolaris
Thu 12/45:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/17$208
This CheapOair deal was found by Cheapflights users on 11/17. 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 11/1912:50 pmONT - SJD
Nonstop2h 22mVolaris
Sat 11/223:34 pmSJD - ONT
1 stop9h 23mVolaris
Deal found 11/17$225
This CheapOair deal was found by Cheapflights users on 11/18. 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 11/3012:50 pmONT - SJD
Nonstop2h 22mVolaris
Wed 12/312:11 pmSJD - ONT
1 stop9h 00mVolaris
Deal found 11/18$236
This Mytrip deal was found by Cheapflights users on 11/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/112:50 pmONT - SJD
Nonstop2h 22mVolaris
Wed 12/315:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/17$251
This CheapOair deal was found by Cheapflights users on 11/17. 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.
Tue 11/1812:50 pmONT - SJD
Nonstop2h 22mVolaris
Tue 11/255:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/17$258
This CheapOair deal was found by Cheapflights users on 11/17. 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 12/2412:50 pmONT - SJD
Nonstop2h 22mVolaris
Wed 12/315:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/17$263
This CheapOair deal was found by Cheapflights users on 11/17. 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 12/1712:50 pmONT - SJD
Nonstop2h 22mVolaris
Wed 12/245:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 11/17$268
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:50 pmONT - GDL
2 stops13h 47mVolaris
Thu 1/229:35 pmGDL - ONT
Nonstop3h 17mVolaris
Deal found 11/18$297
This Kiwi.com deal was found by Cheapflights users on 11/17. 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.
Sun 12/72:59 pmONT - CUN
1 stop17h 37mMultiple Airlines
Thu 12/254:58 pmCUN - ONT
1 stop10h 01mMultiple Airlines
Deal found 11/17$301
This Aeromexico deal was found by Cheapflights users on 11/18. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/710:25 pmONT - CUN
1 stop9h 30mAeromexico
Fri 12/128:00 amCUN - ONT
1 stop14h 39mAeromexico
Deal found 11/18$307

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Mexico 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 18, 2025.
Use the filters below to find and compare flights from Ontario to Mexico that are best for you.

Fly from

Ontario

Fly to

Mexico

Route

Depart

Return

Price

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Wed 4/8

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Mon 4/13

4:02 pm-6:27 pm

Nonstop2h 25m

$183

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Thu 1/1

12:50 pm-4:12 pm

Nonstop2h 22m

San José del Cabo Los Cabos

Sun 2/1

5:06 pm-6:44 pm

Nonstop2h 38m

$183

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Wed 4/15

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Sun 4/19

4:02 pm-6:27 pm

Nonstop2h 25m

$183

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Fri 3/20

11:59 pm-3:57 am

Nonstop2h 58m

León Del Bajio

Tue 3/24

8:28 am-11:00 am

Nonstop3h 32m

$216

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Thu 1/29

12:50 pm-4:12 pm

Nonstop2h 22m

San José del Cabo Los Cabos

Sun 2/1

12:11 pm-8:11 pm

1 stop9h 00m

$241

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Wed 4/1

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Wed 4/15

3:36 pm-11:05 pm

1 stop7h 29m

$260

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Fri 4/10

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Tue 4/14

12:11 pm-7:23 pm

1 stop7h 12m

$274

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Mon 2/2

12:42 am-10:35 am

1 stop7h 53m

Oaxaca Xoxocotlan

Tue 2/10

4:52 pm-10:52 pm

1 stop8h 00m

$280

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Mon 1/19

11:02 pm-10:35 am

1 stop9h 33m

Oaxaca Xoxocotlan

Sat 1/31

4:52 pm-10:52 pm

1 stop8h 00m

$287

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Sun 2/15

11:34 pm-8:35 am

1 stop7h 01m

Oaxaca Xoxocotlan

Fri 2/20

4:52 pm-10:52 pm

1 stop8h 00m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Mexico

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

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

Currently, December is the cheapest month in which you can book a flight from Ontario to Mexico (average of $39). Flying from Ontario to Mexico in November is currently the most expensive (average of $145). 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 MX?

Find hourly flight availability from Ontario to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 18, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 25% on flights from Ontario to Mexico by exploring options for tickets in the evening.

What is the cheapest day to fly from Ontario to Mexico?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Mexico. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Mexico flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

About 9% of weekly flights between $[0, place:'genitive'] and $[1, place:'genitive'] have experienced delays in the past year, with the average delay time being 103 minutes.

What is the most punctual flight time for $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

Over the last year, Volaris have had the lowest number of delays on this route, with just 9% of flights being delayed.

Reviews of airlines servicing Mexico

Get insights into the airlines that provide service to Mexico. 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. Reviews last updated November 18, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Ontario to Mexico by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
9,016 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,048 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Volaris
6.7
Okay
1,150 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,103 reviews
Southwest
8.0
Very good
4,245 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Mexico?

    For a flight from Ontario to Mexico, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • How long is the flight from Ontario to Mexico?

    There are many flights that can get you from Ontario to Mexico in 3h 01m. Fly via Volaris, Delta, or United Airlines to get the fastest option. The distance from Ontario to Mexico is about 1334 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Ontario to Mexico?

    Most travelers choose Ontario - Cancun, Ontario - Mexico City Benito Juarez or Ontario - Guadalajara Miguel Hidal when deciding on the best route from Ontario to Mexico.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Mexico 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?

    Currently, December is the cheapest month in which you can book a flight from Ontario to Mexico (average of $39). Flying from Ontario to Mexico in November is currently the most expensive (average of $145). 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 Ontario to Mexico

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Top 8 airlines flying from Ontario to Mexico

Discover the top 8 airlines that operate flights from Ontario to Mexico. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$151Average$359FlexibilityNo cancel feeOn-time79%
FrontierCheapest$163Average$402FlexibilityNo cancel feeOn-time62%
VivaCheapest$211Average$301FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$237Average$461FlexibilityNo cancel feeOn-time75%
DeltaCheapest$263Average$438FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$310Average$502FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$312Average$582FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$312Average$603FlexibilityNo cancel feeOn-time71%

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