Flights Denver → San Francisco — September 19, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Saturday, September 19, 2026 on the Denver–San Francisco route: 1 stop itinerary (2 flights) via Dallas/Fort Worth (DFW), from Denver International (DEN) to San Francisco International (SFO), first flight Frontier Airlines F94464, departs 4:11 PM, arrives 10:28 PM, total travel time 7h 17m including layovers, flight time 6h 19m (layovers excluded), $130 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 4, 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 F91229, from Denver International (DEN) to San Francisco International (SFO), departs 8:59 AM, arrives 10:47 AM, direct, 2h 48m, $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.