Flights Los Angeles → Denver — September 14, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Monday, September 14, 2026 on the Los Angeles–Denver route: 1 stop itinerary (2 flights) via Phoenix Sky Harbor (PHX), from Los Angeles International (LAX) to Denver International (DEN), first flight Frontier Airlines F91062, departs 8:50 AM, arrives 2:23 PM, total travel time 4h 33m including layovers, flight time 3h 27m (layovers excluded), $157 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 9, 2026 and read by AirSource on September 10, 2026, 20:48 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Frontier Airlines F94346, from Los Angeles International (LAX) to Denver International (DEN), departs 11:36 AM, arrives 3:05 PM, direct, 2h 29m, $160 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.