$194+ Cheap flights from Mexico City (MEX) to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
MEX — ONT
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Mexico City to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Mexico City to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Mexico City to OntarioExplore 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 September 22, 2026.
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 September 22, 2026.
This Frontier deal was found by Cheapflights users on 9/20. 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 10/137:00 am -
1 stop10h 48m
Sat 10/1710:04 am -
1 stop10h 41m
Deal found 9/20![Frontier logo]()
$310
This Frontier deal was found by Cheapflights users on 9/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:00 am -
1 stop11h 38m
Wed 11/255:01 am -
1 stop9h 59m
Deal found 9/18![Frontier logo]()
$332
This CheapOair deal was found by Cheapflights users on 9/18. 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.
Tue 10/612:00 pm -
1 stop12h 05m
Tue 10/139:36 pm -
1 stop8h 49m
Deal found 9/18![Volaris logo]()
$355
This Mytrip deal was found by Cheapflights users on 9/18. 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 10/1412:00 pm -
1 stop12h 05m
Wed 10/2111:26 am -
1 stop9h 19m
Deal found 9/18![Multiple Airlines logo]()
$361
This Frontier deal was found by Cheapflights users on 9/16. 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 11/107:00 am -
1 stop11h 38m
Tue 11/176:25 am -
1 stop8h 35m
Deal found 9/16![Frontier logo]()
$362
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Tue 10/612:00 pm -
1 stop12h 05m
Tue 10/1311:26 am -
1 stop9h 19m
Deal found 9/20![Multiple Airlines logo]()
$364
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Tue 10/612:00 pm -
1 stop12h 05m
Sat 10/1010:04 am -
1 stop10h 41m
Deal found 9/20![Multiple Airlines logo]()
$367
This CheapOair deal was found by Cheapflights users on 9/18. 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.
Wed 10/712:00 pm -
1 stop12h 05m
Wed 10/149:36 pm -
1 stop11h 09m
Deal found 9/18![Volaris logo]()
$368
Best flights from Mexico City to OntarioDiscover carefully curated flight deals from Mexico City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Mexico City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:40 am -
2 stops17h 11m
Mon 11/235:00 am -
2 stops15h 30m
Deal found 9/18![United Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 9/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2612:25 pm -
1 stop9h 17m
Mon 11/305:00 am -
1 stop7h 15m
Deal found 9/19![United Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 9/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:40 am -
2 stops17h 11m
Mon 11/165:00 am -
1 stop7h 15m
Deal found 9/18![United Airlines logo]()
$571
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 11/1312:25 pm -
2 stops10h 26m
Sun 11/159:25 am -
2 stops22h 40m
Deal found 9/16![United Airlines logo]()
$582
This United Airlines deal was found by Cheapflights users on 9/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:40 am -
2 stops17h 18m
Thu 10/225:00 am -
1 stop15h 10m
Deal found 9/17![United Airlines logo]()
$660
This United Airlines deal was found by Cheapflights users on 9/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:40 am -
2 stops17h 11m
Sun 11/225:00 am -
2 stops15h 30m
Deal found 9/18![United Airlines logo]()
$667
Last-minute flights from Mexico City to OntarioDiscover last-minute flight deals from Mexico City to Ontario. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Mexico City to Ontario. Data last updated September 22, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/21. 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.
Thu 10/14:35 pm -
1 stop7h 30m
Sun 10/49:36 pm -
1 stop11h 09m
Deal found 9/21![Volaris logo]()
$353
This CheapOair deal was found by Cheapflights users on 9/18. 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.
Tue 10/612:00 pm -
1 stop12h 05m
Tue 10/139:36 pm -
1 stop8h 49m
Deal found 9/18![Volaris logo]()
$355
This Mytrip deal was found by Cheapflights users on 9/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:35 pm -
1 stop7h 30m
Tue 10/1311:26 am -
1 stop9h 19m
Deal found 9/19![Multiple Airlines logo]()
$364
This Mytrip deal was found by Cheapflights users on 9/20. 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.
Tue 10/612:00 pm -
1 stop12h 05m
Sat 10/1010:04 am -
1 stop10h 41m
Deal found 9/20![Multiple Airlines logo]()
$367
This CheapOair deal was found by Cheapflights users on 9/18. 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.
Wed 10/712:00 pm -
1 stop12h 05m
Wed 10/149:36 pm -
1 stop11h 09m
Deal found 9/18![Volaris logo]()
$368
This Frontier deal was found by Cheapflights users on 9/20. 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 10/137:00 am -
1 stop10h 48m
Sat 10/1710:04 am -
1 stop10h 41m
Deal found 9/20![Frontier logo]()
$310
This Mytrip deal was found by Cheapflights users on 9/18. 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 10/1412:00 pm -
1 stop12h 05m
Wed 10/2111:26 am -
1 stop9h 19m
Deal found 9/18![Multiple Airlines logo]()
$361
This Frontier deal was found by Cheapflights users on 9/21. 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.
Wed 10/217:00 am -
1 stop10h 48m
Wed 11/46:25 am -
2 stops14h 20m
Deal found 9/21![Frontier logo]()
$365
One-way flights from Mexico City to OntarioSearch for one-way flight options from Mexico City to Ontario. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Mexico City to Ontario. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This CheapOair deal was found by Cheapflights users on 9/21. 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.
Wed 10/2112:00 pm -
1 stop12h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Volaris logo]()
$194
This Jetabroad deal was found by Cheapflights users on 9/17. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:00 pm -
1 stop12h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Volaris logo]()
$196
This Flightnetwork deal was found by Cheapflights users on 9/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:00 pm -
1 stop8h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Volaris logo]()
$200
This Frontier deal was found by Cheapflights users on 9/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am -
1 stop10h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$202
This Frontier deal was found by Cheapflights users on 9/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:05 pm -
1 stop8h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$203
This Priceline deal was found by Cheapflights users on 9/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am -
1 stop10h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$204
This FlightHub deal was found by Cheapflights users on 9/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:20 am -
1 stop15h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Frontier logo]()
$206
This FlightHub deal was found by Cheapflights users on 9/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1711:55 am -
1 stop27h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$212
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 September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $310 (Frontier) |
One-way from | $194 (CheapOair) |
Popular in | August |
Cheapest in | January |
Average price | $300 |
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 7,457,451 searches. Data last updated September 22, 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
Cheapest round-trip
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Fri 11/27
12:05 pm-7:36 pm
1 stop9h 31m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$268
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Tue 10/20
9:15 am-11:55 pm
2 stops15h 40m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$319
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Wed 10/21
9:15 am-11:55 pm
2 stops15h 40m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$319
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Fri 10/23
7:00 am-11:55 pm
2 stops17h 55m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$319
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Tue 12/8
9:40 am-11:58 pm
2 stops16h 18m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$356
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Wed 1/13
8:20 am-4:12 pm
2 stops9h 52m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$357
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Wed 3/17
6:55 am-11:48 pm
2 stops17h 53m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$357
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Mon 12/7
8:40 am-6:39 pm
1 stop11h 59m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$357
Quickest round-trip
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Tue 1/12
2:40 pm-9:40 pm
1 stop9h 00m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$386
Mexico CityOntario
MEX Mexico City Benito Juarez - ONT Ontario
MEXONT
Mexico City Benito Juarez
Fri 1/8
5:50 pm-12:33 pm
2 stops20h 43m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$393
Showing 1-10 of 18 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
MEX-ONT
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 August is currently the most expensive (average of $572). 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 $346 and $486 in October.The cheapest round-trip price found within the last 5 days was $310 on Frontier (Oct 13-Oct 17).
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 September 22, 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.
Boarding
6.6
Crew
7.3
Entertainment
4.9
Food
5.3
Overall
6.6
Comfort
6.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
MEX - LAX
Boarding
6.6
Crew
7.3
Entertainment
4.9
Food
5.3
Overall
6.6
Comfort
6.3
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
MEX - LAX
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.
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Mexico City and Ontario flights
Browse other Mexico City and Ontario flight options. Last updated on September 22, 2026.
Other flights from Mexico City
Browse through other flights departing from Mexico City. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$337 | FlexibilityNo cancel fee | On-time79% |