Frontier Airlines F91230 San Francisco International (SFO) → Denver International (DEN) — September 11, 2026

One way · Economy · 1 adult · price per person

Last observed price for Friday, September 11, 2026: Frontier Airlines F91230, from San Francisco International (SFO) to Denver International (DEN), departs 6:04 AM, arrives 9:46 AM, direct, 2h 42m, $383 per person. Price found in an Aviasales search on September 5, 2026 and read by AirSource on September 10, 2026, 20:48 UTC: it is not guaranteed and is confirmed on Aviasales at booking time.

Observation for flight F91230 on September 11, 2026

Frontier Airlines F91230

Direct · San Francisco International (SFO) → Denver International (DEN)

Direct

6:04 AM

Fri, Sep 11

San Francisco International (SFO)

2h 42m

direct

9:46 AM

Fri, Sep 11

Denver International (DEN)

Airline: Frontier Airlines (F9)
Flight: F91230
Departure: San Francisco International (SFO) · September 11, 2026 · 6:04 AM local time (UTC-7)
Arrival: Denver International (DEN) · September 11, 2026 · 9:46 AM local time (UTC-6)
Stops: Direct (no plane change, as stated by the source; it can include a stop)
Duration: 2h 42m
Last observed price: $383 per person, one way
Observed: Price and fare conditions found in an Aviasales search on September 5, 2026 · read by AirSource on September 10, 2026, 20:48 UTC · more than 48 hours ago