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$43+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$172
(Mytrip)

One-way from

$43
(CheapOair)

Popular in

December

Cheapest in

March

Average price

$390

Good round-trip deal

$179 or less

Good one-way deal

$46 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. 11% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 22, 2025.

This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/212:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 11/75:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/21$173
This CheapOair deal was found by Cheapflights users on 10/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/412:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 11/75:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/21$178
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/711:59 pmONT - BJX
Nonstop3h 05mVolaris
Sat 11/159:27 amBJX - ONT
Nonstop3h 33mVolaris
Deal found 10/20$192
This Mytrip deal was found by Cheapflights users on 10/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 12/125:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/20$199
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1612:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 11/215:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/21$211
This CheapOair deal was found by Cheapflights users on 10/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:50 pmONT - SJD
Nonstop2h 22mVolaris
Thu 12/185:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/19$212
This CheapOair deal was found by Cheapflights users on 10/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:50 pmONT - SJD
Nonstop2h 22mVolaris
Fri 11/215:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/21$220
This Expedia deal was found by Cheapflights users on 10/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2712:40 pmONT - SJD
Nonstop2h 24mVolaris
Fri 10/313:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 10/19$221
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2812:50 pmONT - SJD
Nonstop2h 22mVolaris
Tue 12/23:36 pmSJD - ONT
1 stop8h 16mVolaris
Deal found 10/20$238
This Gotogate deal was found by Cheapflights users on 10/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:42 amONT - SJD
1 stop9h 48mVolaris
Wed 11/125:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/20$241
This CheapOair deal was found by Cheapflights users on 10/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:42 amONT - SJD
1 stop9h 48mVolaris
Sat 11/155:06 pmSJD - ONT
Nonstop2h 38mVolaris
Deal found 10/20$244
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 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 stop18h 25mMultiple Airlines
Sun 12/141:19 pmCUN - ONT
1 stop30h 04mMultiple Airlines
Deal found 10/21$299

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 October 22, 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

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Sat 2/14

11:34 pm-8:35 am

1 stop7h 01m

Oaxaca Xoxocotlan

Tue 2/17

4:52 pm-10:52 pm

1 stop8h 00m

$316

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Fri 1/23

5:05 am-10:35 pm

2 stops15h 30m

Guadalajara Miguel Hidal

Mon 2/2

5:45 am-5:43 pm

2 stops13h 58m

$320

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Sat 1/31

6:00 am-10:35 pm

2 stops14h 35m

Guadalajara Miguel Hidal

Sat 2/21

5:45 am-8:50 pm

2 stops17h 05m

$340

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Fri 1/30

5:05 am-10:35 pm

2 stops15h 30m

Guadalajara Miguel Hidal

Sat 2/14

3:22 pm-9:59 pm

1 stop8h 37m

$345

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Sat 1/17

12:42 am-10:35 am

1 stop7h 53m

Oaxaca Xoxocotlan

Fri 1/23

4:52 pm-10:52 pm

1 stop8h 00m

$362

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Mon 11/10

11:02 pm-11:30 am

1 stop11h 28m

San José del Cabo Los Cabos

Thu 11/13

5:06 pm-6:44 pm

Nonstop2h 38m

$362

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Wed 2/25

12:42 am-10:35 am

1 stop7h 53m

Oaxaca Xoxocotlan

Tue 3/3

4:52 pm-10:52 pm

1 stop8h 00m

$366

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Sat 11/8

11:02 pm-8:35 am

1 stop7h 33m

Oaxaca Xoxocotlan

Tue 11/11

4:52 pm-10:52 pm

1 stop8h 00m

$374

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Thu 11/27

12:42 am-11:30 am

1 stop9h 48m

San José del Cabo Los Cabos

Tue 12/2

12:11 pm-8:11 pm

1 stop9h 00m

$374

OntarioPuerto Vallarta

ONT - PVR

ONTPVR

Ontario

Sat 12/6

6:41 pm-1:02 pm

2 stops16h 21m

Puerto Vallarta Ordaz

Sat 12/13

3:40 pm-9:49 pm

1 stop8h 09m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

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 June is currently the most expensive (average of $138). 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 October 22, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 28% 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.

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 October 22, 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
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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
4,237 reviews
Southwest
8.0
Very good
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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
8,990 reviews
Southwest
8.0
Very good
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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
11,028 reviews
Southwest
8.0
Very good
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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
1,152 reviews
Southwest
8.0
Very good
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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
3,130 reviews
Southwest
8.0
Very good
4,237 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

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 6h 25m. Fly via Volaris, United Airlines, or Southwest to get the fastest option. The distance from Ontario to Mexico is about 1192 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 to fly from Ontario to Mexico one-way?

    To fly one-way, consider booking your trip with Volaris, which is currently one of the cheapest options available, starting at $43. Delta flights start at $126 while deals on Frontier start at $138 one-way.

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

    Most travelers choose Ontario - Mexico City Benito Juarez, Ontario - Guadalajara Miguel Hidal or Ontario - Cancun 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 June is currently the most expensive (average of $138). 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 Ontario to Mexico

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
VolarisCheapest$107Average$362FlexibilityNo cancel feeOn-time79%
FrontierCheapest$163Average$401FlexibilityNo cancel feeOn-time62%
VivaCheapest$211Average$301FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$237Average$484FlexibilityNo cancel feeOn-time75%
DeltaCheapest$263Average$438FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$310Average$509FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$312Average$580FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$313Average$600FlexibilityNo cancel feeOn-time71%

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