Houston (IAH) to Mexico City (MEX): 765 miles (1,232 km) great-circle, about 2h 00m nonstop by our estimate. Cheapest fare observed: $140 round-trip on Volaris, nonstop, departing May 3, 2026.
$140 round-trip, Volaris Y4731, departing 2026-05-03 at 20:55, returning 2026-05-12. The recorded itinerary left on a Sunday, returning on a Tuesday 9 nights later; the fare was observed 8 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $140, it ranked 7th of the 30 round-trip fares we recorded from IAH (median $247). That is 18.3 cents per great-circle mile (round-trip price over one-way distance), close to the IAH median of 17.9 cents across 30 round-trip routes.
Routes from IAH of similar length: Cancun (812 mi) at $199 and Guadalajara (821 mi) at $357.
Volaris had the cheapest fare on 2 of 30 IAH routes. It is the 26th longest of the 30 routes we track from IAH.
Of 24 departure airports with a fare to Mexico City, Houston (IAH) ranked 4th at $140. Lowest: $73 from Guadalajara (GDL); highest: $1375 from Addis Ababa (ADD); 13 nonstop. Cheapest-fare airlines (routes): Volaris (6), Viva Aerobus (5), Aeromexico (4), Arajet (2), Copa (1) and Ethiopian (1), plus 5 more.
That depends on your passport and trip, so check the official source for Mexico: Instituto Nacional de Migracion (Mexico). Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/Mexico_City; flight time is our estimate.