Guadalajara (GDL) to Ontario, California (ONT): 1,279 miles (2,059 km) great-circle, about 3h 05m nonstop by our estimate. Cheapest fare observed: $338 round-trip on Volaris, nonstop, departing July 8, 2026.
$338 round-trip, Volaris Y41860, departing 2026-07-08 at 20:59, returning 2026-07-20. The recorded itinerary left on a Wednesday, returning on a Monday 12 nights later; the fare was observed 74 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $338, it ranked 11th of the 30 round-trip fares we recorded from GDL (median $427). That is 26.4 cents per great-circle mile (round-trip price over one-way distance), close to the GDL median of 25.3 cents across 30 round-trip routes.
Routes from GDL of similar length: Los Angeles (1,308 mi) at $282 and Denver (1,338 mi) at $382.
Volaris had the cheapest fare on 9 of 30 GDL routes. It is the 21st longest of the 30 routes we track from GDL.
Of 4 departure airports with a fare to Ontario, California, Guadalajara (GDL) ranked 3rd at $338. Lowest: $59 from Las Vegas (LAS); highest: $1594 from Sapporo (CTS); 3 nonstop. Cheapest-fare airlines (routes): Frontier (2), EVA Air (1) and Volaris (1).
That depends on your passport and trip, so check the official source for United States: U.S. Customs and Border Protection: international visitors. 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/Mexico_City, America/Los_Angeles; flight time is our estimate.