£207 Cheap Flights from Ontario Intl. Airport (ONT) to Mexico City (MEX)

View £207 flight on Thu, 24 Sept 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Benito Juarez International Airport (MEX)

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Cheap Flights from Ontario Intl. Airport (ONT) to Mexico City (MEX)

Prices were available within the past 7 days and start at £207 for one-way flights and £495 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aeromexico
Fri, 2 Oct - Fri, 9 Oct
ONT
Ontario
MEX
Mexico City
£495 Return, found 2 days ago
£495
Return
found 2 days ago
Select Aeromexico flight, departing Fri, 2 Oct from Ontario to Mexico City, returning Fri, 9 Oct, priced at £495 found 2 days ago
United
Tue, 7 Jul - Wed, 8 Jul
ONT
Ontario
MEX
Mexico City
£517 Return, found 18 hours ago
£517
Return
found 18 hours ago
Select United flight, departing Tue, 7 Jul from Ontario to Mexico City, returning Wed, 8 Jul, priced at £517 found 18 hours ago
Aeromexico
Fri, 2 Oct - Fri, 9 Oct
ONT
Ontario
MEX
Mexico City
£542 Return, found 2 days ago
£542
Return
found 2 days ago
Select Aeromexico flight, departing Fri, 2 Oct from Ontario to Mexico City, returning Fri, 9 Oct, priced at £542 found 2 days ago
Aeromexico
Fri, 13 Nov - Sun, 15 Nov
ONT
Ontario
MEX
Mexico City
£555 Return, found 6 days ago
£555
Return
found 6 days ago
Select Aeromexico flight, departing Fri, 13 Nov from Ontario to Mexico City, returning Sun, 15 Nov, priced at £555 found 6 days ago
American Airlines
Tue, 7 Jul - Wed, 8 Jul
ONT
Ontario
MEX
Mexico City
£557 Return, found 18 hours ago
£557
Return
found 18 hours ago
Select American Airlines flight, departing Tue, 7 Jul from Ontario to Mexico City, returning Wed, 8 Jul, priced at £557 found 18 hours ago
Aeromexico
Fri, 13 Nov - Sun, 15 Nov
ONT
Ontario
MEX
Mexico City
£564 Return, found 6 days ago
£564
Return
found 6 days ago
Select Aeromexico flight, departing Fri, 13 Nov from Ontario to Mexico City, returning Sun, 15 Nov, priced at £564 found 6 days ago
American Airlines
Fri, 5 Feb - Thu, 18 Feb
ONT
Ontario
MEX
Mexico City
£579 Return, found 1 day ago
£579
Return
found 1 day ago
Select American Airlines flight, departing Fri, 5 Feb from Ontario to Mexico City, returning Thu, 18 Feb, priced at £579 found 1 day ago
United
Tue, 2 Jun - Wed, 3 Jun
ONT
Ontario
MEX
Mexico City
£596 Return, found 3 days ago
£596
Return
found 3 days ago
Select United flight, departing Tue, 2 Jun from Ontario to Mexico City, returning Wed, 3 Jun, priced at £596 found 3 days ago
American Airlines
Tue, 7 Jul - Wed, 8 Jul
ONT
Ontario
MEX
Mexico City
£613 Return, found 18 hours ago
£613
Return
found 18 hours ago
Select American Airlines flight, departing Tue, 7 Jul from Ontario to Mexico City, returning Wed, 8 Jul, priced at £613 found 18 hours ago
Delta
Tue, 7 Jul - Wed, 8 Jul
ONT
Ontario
MEX
Mexico City
£621 Return, found 18 hours ago
£621
Return
found 18 hours ago
Select Delta flight, departing Tue, 7 Jul from Ontario to Mexico City, returning Wed, 8 Jul, priced at £621 found 18 hours ago

Alternative airports near Mexico City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mexico City Intl. MEX. Cheapest and Closest option available. Average driving time to city centre is 8 minutes. Flights from £736
MEX
Mexico City Intl.
CheapestClosest
Average driving time to city centre8 min
Flights from £736

Find the cheapest month to fly from Ontario (ONT) to Mexico City (MEX)

October is typically the cheapest month to fly

From £205 - £307 per traveller.

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) cost?
One-way flights typically cost between £311 and £771 and return flights often range between £311 and £771. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
March is typically the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.), with average return fares of approximately £745. This is about 7% lower than the average price throughout the year. March often sees lower prices as the peak winter travel season winds down and before the summer rush begins. Other cheap months to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) include April and May.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
The best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) is April. This month offers a great balance, as it's both one of the cheapest times to fly, with average prices around £745, and a popular time for travel, meaning you'll have plenty of flight options. March is also a cheap month to consider if you're looking for good value.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
There are approximately 35 connecting flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) (ONT) to Mexico City (MEX-Mexico City Intl.) (MEX). Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW), and Salt Lake City Intl. (SLC).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) typically departs at approximately 12:25 AM local time, operated by Y4. This is a seasonal service active in March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
You'll typically find the most flights from Los Angeles - Ontario Intl. (ONT) to Mexico City Intl. (MEX) on a Sunday, with around 27 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta Air Lines, and United Airlines. Compared to other days, Sundays offer notably more flight options, making it a great day to consider for your journey.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
The most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) are in the morning, from 6am to 9am. About 40% of passengers prefer this time. Many major carriers, including American Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because you can get an early start to your travel day and arrive in Mexico City with plenty of time to settle in.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
Flying from ONT to MEX with a connection usually takes about 9 hours 20 minutes, traveling roughly 1,520 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to MEX flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Mexico City from Los Angeles - Ontario Intl. (ONT)?
If you're planning to travel to Mexico City from Los Angeles - Ontario Intl. (ONT), you can fly directly into Mexico City Intl. (MEX) Some flights may connect through major hubs like Salt Lake City Intl. (SLC), Hartsfield-Jackson Atlanta Intl. (ATL), Denver Intl. (DEN) before reaching Mexico City. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Mexico City (MEX-Mexico City Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Mexico City Intl.
Airlines serving
Aeromexico, American Airlines, Delta, United
Return price
£495
Distance
2431 km

Book with confidence

Compare flights from Ontario Intl. Airport to Mexico City easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ontario Intl. Airport to Mexico City. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Mexico City Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Ontario Intl. Airport to Mexico City Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Ontario Intl. Airport (ONT) to Mexico City Intl. (MEX)

The easiest way to view the best deals on flights from Ontario Intl. Airport to Mexico City today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Ontario Intl. Airport to Mexico City Intl. start at just £495 and range up to £621.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Ontario Intl. Airport and Mexico City
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Ontario Intl. Airport to Mexico City flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Ontario Intl. Airport to Mexico City Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Ontario Intl. Airport to Mexico City easily and book with confidence

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*Available to Expedia members.