Mexico City (MEX) to Montreal (YMQ): 2,307 miles (3,712 km) great-circle, about 5h 05m nonstop by our estimate. Cheapest fare observed: $478 round-trip on United Airlines, with 2 stops, departing May 1, 2026.
$478 round-trip, United Airlines UA1025, departing 2026-05-01 at 16:40, returning 2026-05-09. The recorded itinerary left on a Friday, returning on a Saturday 8 nights later; the fare was observed 6 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $478, it ranked 19th of the 30 round-trip fares we recorded from MEX (median $329). That is 20.7 cents per great-circle mile (round-trip price over one-way distance), above the MEX median of 18.3 cents across 30 round-trip routes.
Routes from MEX of similar length: New York (2,091 mi) at $355 and Punta Cana (2,004 mi) at $479.
United Airlines had the cheapest fare on 3 of 30 MEX routes. It is the 12th longest of the 30 routes we track from MEX.
Of 7 departure airports with a fare to Montreal, Mexico City (MEX) ranked 5th at $478. Lowest: $305 from Fort Lauderdale (FLL); highest: $655 from Portland (PDX); 1 nonstop. Cheapest-fare airlines (routes): American Airlines (2), United Airlines (2), Flair Airlines (1), Porter Airlines (1) and WestJet (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Mexico_City, America/Toronto; flight time is our estimate.