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$75+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MEX
Aug 8 — Aug 151
Fri 8/8
Fri 8/15
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 August 3, 2025.

Round-trip from

$143
(Mytrip)

One-way from

$75
(Mytrip)

Popular in

December

Cheapest in

March

Average price

$366

Good round-trip deal

$190 or less

Good one-way deal

$77 or less
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 ($45 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 August 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 August 3, 2025.

This Mytrip deal was found by Cheapflights users on 8/2. 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.
Sat 8/3012:40 pmONT - SJD
Nonstop2h 24mVolaris
Sat 9/63:54 pmSJD - ONT
Nonstop2h 25mVolaris
Deal found 8/2$143
This Expedia deal was found by Cheapflights users on 8/2. 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.
Fri 10/3111:59 pmONT - BJX
Nonstop3h 01mVolaris
Tue 11/49:28 amBJX - ONT
Nonstop3h 32mVolaris
Deal found 8/2$191
This Mytrip deal was found by Cheapflights users on 8/2. 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 9/112:40 pmONT - GDL
2 stops17h 38mVolaris
Thu 9/49:04 pmGDL - ONT
Nonstop3h 09mVolaris
Deal found 8/2$276
This Gotogate deal was found by Cheapflights users on 8/2. 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 8/1512:59 amONT - SJD
1 stop9h 36mMultiple Airlines
Sat 8/233:54 pmSJD - ONT
Nonstop2h 25mMultiple Airlines
Deal found 8/2$279
This Gotogate deal was found by Cheapflights users on 8/2. 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.
Mon 9/112:40 pmONT - MEX
1 stop10h 05mVolaris
Mon 9/84:30 pmMEX - ONT
1 stop7h 43mVolaris
Deal found 8/2$311
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sat 11/1511:59 pmONT - PVR
1 stop13h 28mVolaris
Sat 11/221:44 pmPVR - ONT
1 stop11h 28mVolaris
Deal found 7/31$316
This Aeromexico deal was found by Cheapflights users on 7/30. 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.
Sat 8/236:05 amONT - PVR
1 stop7h 30mAeromexico
Tue 8/263:45 pmPVR - ONT
1 stop7h 55mAeromexico
Deal found 7/30$326
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Tue 8/129:11 pmONT - BJX
3 stops17h 41mMultiple Airlines
Sat 8/168:43 amBJX - ONT
Nonstop3h 17mMultiple Airlines
Deal found 7/31$327
This Trip.com deal was found by Cheapflights users on 8/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/291:09 amONT - OAX
1 stop8h 29mVolaris
Wed 10/14:36 pmOAX - ONT
1 stop7h 37mVolaris
Deal found 8/1$328
This Aeromexico deal was found by Cheapflights users on 8/3. 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 11/1610:59 pmONT - CUN
1 stop9h 01mAeromexico
Tue 11/258:10 amCUN - ONT
1 stop14h 32mAeromexico
Deal found 8/3$334
This United Airlines deal was found by Cheapflights users on 7/31. 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 10/206:27 pmONT - PVR
1 stop17h 30mUnited Airlines
Sat 10/251:59 pmPVR - ONT
1 stop7h 25mUnited Airlines
Deal found 7/31$352
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amONT - PVR
1 stop8h 36mAlaska Airlines
Wed 10/152:07 pmPVR - ONT
1 stop10h 44mAlaska Airlines
Deal found 8/2$353

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 August 3, 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

Sat 8/30

12:40 pm-3:04 pm

Nonstop2h 24m

San José del Cabo Los Cabos

Sat 9/6

3:54 pm-6:19 pm

Nonstop2h 25m

$143

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Fri 10/31

11:59 pm-4:00 am

Nonstop3h 01m

León Del Bajio

Tue 11/4

9:28 am-11:00 am

Nonstop3h 32m

$191

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Mon 9/1

12:40 pm-7:18 am

2 stops17h 38m

Guadalajara Miguel Hidal

Thu 9/4

9:04 pm-11:13 pm

Nonstop3h 09m

$276

OntarioSan José del Cabo

ONT - SJD

ONTSJD

Ontario

Fri 8/15

12:59 am-10:35 am

1 stop9h 36m

San José del Cabo Los Cabos

Sat 8/23

3:54 pm-6:19 pm

Nonstop2h 25m

$279

OntarioMexico City

ONT - MEX

ONTMEX

Ontario

Mon 9/1

12:40 pm-11:45 pm

1 stop10h 05m

Mexico City Benito Juarez

Mon 9/8

4:30 pm-11:13 pm

1 stop7h 43m

$311

OntarioGuadalajara

ONT - GDL

ONTGDL

Ontario

Thu 8/28

6:00 am-6:30 pm

1 stop11h 30m

Guadalajara Miguel Hidal

Fri 9/5

5:12 pm-7:21 pm

Nonstop3h 09m

$315

OntarioPuerto Vallarta

ONT - PVR

ONTPVR

Ontario

Sat 11/15

11:59 pm-3:27 pm

1 stop13h 28m

Puerto Vallarta Ordaz

Sat 11/22

1:44 pm-11:12 pm

1 stop11h 28m

$316

OntarioPuerto Vallarta

ONT - PVR

ONTPVR

Ontario

Sat 8/23

6:05 am-2:35 pm

1 stop7h 30m

Puerto Vallarta Ordaz

Tue 8/26

3:45 pm-10:40 pm

1 stop7h 55m

$326

OntarioLeón

ONT - BJX

ONTBJX

Ontario

Tue 8/12

9:11 pm-3:52 pm

3 stops17h 41m

León Del Bajio

Sat 8/16

8:43 am-11:00 am

Nonstop3h 17m

$327

OntarioOaxaca

ONT - OAX

ONTOAX

Ontario

Mon 9/29

1:09 am-10:38 am

1 stop8h 29m

Oaxaca Xoxocotlan

Wed 10/1

4:36 pm-11:13 pm

1 stop7h 37m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

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, May is the cheapest month in which you can book a flight from Ontario to Mexico (average of $388). Flying from Ontario to Mexico in December is currently the most expensive (average of $615). 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 August 3, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Mexico as you normally would.

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 August 3, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Aeromexico 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,985 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Aeromexico
7.5
Good
1,718 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,905 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $75. Aeromexico flights start at $136 while deals on Delta start at $150 one-way.

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

    Most travelers choose Ontario - Cancun, Ontario - Guadalajara Miguel Hidal or Ontario - San José del Cabo Los Cabos 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, May is the cheapest month in which you can book a flight from Ontario to Mexico (average of $388). Flying from Ontario to Mexico in December is currently the most expensive (average of $615). 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 August 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$132Average$494FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$158Average$386FlexibilityNo cancel feeOn-time62%
VolarisCheapest$174Average$363FlexibilityNo cancel feeOn-time79%
VivaCheapest$211Average$348FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$268Average$469FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$310Average$605FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$312Average$588FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$348Average$581FlexibilityNo cancel feeOn-time71%

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