Denver (DEN) to Los Angeles (LAX): 861 miles (1,385 km) great-circle, about 2h 15m nonstop by our estimate. Cheapest fare observed: $189 round-trip on Frontier, nonstop, departing May 5, 2026.
$189 round-trip, Frontier F92341, departing 2026-05-05 at 07:20, returning 2026-05-11. The recorded itinerary left on a Tuesday, returning on a Monday 6 nights later; the fare was observed 10 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $189, it ranked 13th of the 30 round-trip fares we recorded from DEN (median $204). That is 22.0 cents per great-circle mile (round-trip price over one-way distance), above the DEN median of 16.1 cents across 30 round-trip routes.
Routes from DEN of similar length: Houston (884 mi) at $102 and Chicago (886 mi) at $173.
Frontier had the cheapest fare on 19 of 30 DEN routes. It is the 24th longest of the 30 routes we track from DEN.
Of 40 departure airports with a fare to Los Angeles, Denver (DEN) ranked 11th at $189. Lowest: $77 from Seattle (SEA); highest: $1224 from Sapporo (CTS); 11 nonstop. Cheapest-fare airlines (routes): Frontier (18), Spirit (5), Southwest (3), EVA Air (2), Fiji Airways (2) and WestJet (2), plus 8 more.
The reverse, Los Angeles (LAX) to Denver (DEN), was $121 round-trip on Frontier, nonstop, departing May 8, 2026. Los Angeles to Denver flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Denver, America/Los_Angeles; flight time is our estimate.