$128 Cheap United flights Chicago (ORD) to Mexico City (MEX)

View $128 flight on Sat, Aug 16, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$128 Cheap United flights Chicago (ORD) to Mexico City (MEX)

Prices were available within the past 7 days and start at $128 for one-way flights and $292 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 30 - Sun, Dec 21
ORD
Chicago
MEX
Mexico City
$292 Roundtrip, found 4 days ago
$292
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 30 from Chicago to Mexico City, returning Sun, Dec 21, priced at $292 found 4 days ago
United
Wed, Sep 3 - Thu, Sep 11
ORD
Chicago
MEX
Mexico City
$295 Roundtrip, just found
$295
Roundtrip
just found
Select United flight, departing Wed, Sep 3 from Chicago to Mexico City, returning Thu, Sep 11, priced at $295 just found
United
Fri, Oct 3 - Sun, Oct 19
ORD
Chicago
MEX
Mexico City
$298 Roundtrip, just found
$298
Roundtrip
just found
Select United flight, departing Fri, Oct 3 from Chicago to Mexico City, returning Sun, Oct 19, priced at $298 just found
United
Sun, Sep 28 - Mon, Oct 6
ORD
Chicago
MEX
Mexico City
$299 Roundtrip, just found
$299
Roundtrip
just found
Select United flight, departing Sun, Sep 28 from Chicago to Mexico City, returning Mon, Oct 6, priced at $299 just found
United
Tue, Sep 9 - Wed, Sep 17
ORD
Chicago
MEX
Mexico City
$303 Roundtrip, just found
$303
Roundtrip
just found
Select United flight, departing Tue, Sep 9 from Chicago to Mexico City, returning Wed, Sep 17, priced at $303 just found
United
Mon, Aug 18 - Tue, Aug 26
ORD
Chicago
MEX
Mexico City
$311 Roundtrip, just found
$311
Roundtrip
just found
Select United flight, departing Mon, Aug 18 from Chicago to Mexico City, returning Tue, Aug 26, priced at $311 just found
Flights from Chicago (ORD) to Santa Lucía (NLU)
Origin airport
O'Hare Intl.
Destination airport
Felipe Ángeles Intl.
Airlines serving
Aeromexico, Air Canada, American Airlines, Delta, Frontier Airlines, United, Viva, Volaris, avianca
Popular airline
Aeromexico
Distance
1668 mi
Average flight time
3 hours 16 mins

Frequently asked questions

How much is a United Airlines flight from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX)?
You'll find budget-friendly return United Airlines flights from $292 from ORD to MEX by filtering your results from "Price (lowest to highest)" on Expedia. Or look for deals from $128 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ORD to MEX with United Airlines?
United Airlines flights to Mexico City tend to be more affordable in the off-peak months of January and September. Whether you're searching for a one-way or round-trip ticket, you could find a better deal then.
What is the cheapest time to book flights from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX) with United Airlines?
Scoring the best United Airlines deals from ORD to MEX is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. As an added bonus, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is often the most expensive day to book.* It's smart to kick off your flight search about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX)?
Choose from one of United Airlines's 14 weekly direct flights from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX). To see your choices, enter your origin, destination and dates and hit search. Then apply the "Nonstop" and "Airline" filters.
How long does it take to fly from ORD to MEX with United Airlines?
It takes approximately 4h 35m to travel nonstop from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX) with United Airlines.
Which day of the week has the most United Airlines flights from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX)?
United Airlines has the most flights from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX) on Thursday. With up to 2 daily departures, you'll get the most flexibility and choice on this day.
What is the earliest United Airlines flight from ORD to MEX?
The first United Airlines flight from ORD to MEX departs at 8:55AM UTC-6, touching down at 1:35PM UTC-6. If you prefer to set off later in the day, the last United Airlines flight leaves ORD at 7:40PM UTC-6 and lands at MEX at 12:10AM UTC-6. Flying early is often a good idea as morning flights are least likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Mexico City?
United Airlines flights from O'Hare Intl. Airport (ORD) to Mexico City arrive at Mexico City Intl. Airport (MEX). This is the main entry point to this city.
Why fly with United Airlines from ORD to MEX?
A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to travel from ORD to MEX with United Airlines. Plus, when you sign up to our One Key™ program, you can receive OneKeyCash™* in addition to United Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX)?
United Airlines usually operates Airbus A320 planes for journeys from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX). Keep in mind that aircraft type can differ depending on operational needs, so the plane you catch might be different on your travel date.
Can I change or cancel my United Airlines flight from O'Hare Intl. Airport (ORD) to Mexico City Intl. Airport (MEX)?
It's usually possible to cancel or modify your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need flexible options? Apply the "Changes included" and "No cancel fee" filters to find flights that won't charge you extra if you have to adjust your plans. To update your booking, head to "Trips," select your flight and click on "Manage Booking" for more details.

Explore a world of travel with Expedia

*Available to One Key members.