F91230Frontier Airlines · SFO → DEN
live · 8m ago
Route confirmed Frontier Airlines

F91230 San FranciscoSFO · 06:02 DenverDEN · 09:40

F91230 by Frontier Airlines flies from San Francisco (SFO) to Denver (DEN) for the Thu, Nov 5 departure.

Right nowOn Time · gate B17
06:02

departs SFO · on schedule

Typical gate push−1 minmedian posted departure
Typical arrival−20 minmedian over 4 operations
Wins back in air~19 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 4 operations · gate push → arrival
0+30+60+90 min
11-04
−10 gate · −32 arrival
11-03
−1 gate · −18 arrival
11-02
−1 gate · −16 arrival
11-01
−22 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
SFOSan FranciscoOn-time likelySFO delay board →
DENDenverModerate riskDEN delay board →
SFO→DENevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
45%Chance of 15+ min delay
1.6%Chance of cancellation
+10 minTypical airport delay in this weather

Conditions at SFO and DEN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at San Francisco

Forecast

Fri 6 Nov, local date

High21°Clikely 20°C to 23°C
Low13°Clikely 11°C to 14°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Denver

Forecast

Fri 6 Nov, local date

High15°Clikely 12°C to 16°C
Low2°Clikely 1°C to 4°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other San Francisco to Denver flights today

same route · Frontier Airlines
F94310departs 09:42
F91094departs 12:00
F93436departs 12:20
F93440departs 19:13
F9440departs 20:44

If F91230 is cancelled, these are the other Frontier Airlines nonstop flights from San Francisco to Denver on the same day, with scheduled departure times in SFO local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How F91230 actually runs

Pro Flight Search has tracked every published board update for F91230 across the SFO and DEN boards: schedule changes, gate pushes and actual clocks. Usually lands ~20 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how F91230 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-04SFO 06:02 05:52 (−10)DEN 09:40 09:08 (−32)
11-03SFO 06:02 06:01 (−1)DEN 09:40 09:22 (−18)
11-02SFO 06:02 06:01 (−1)DEN 09:40 09:24 (−16)
11-01SFO DEN 09:40 09:18 (−22)

Aircraft

Recent tails: N382FR, N610FR, N616FR, N645FR.

Board clocks recorded as SFO and DEN published them.

Planning around F91230? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: F91230 San Francisco to Denver on-time performance, measured from the SFO and DEN airport boards.

Canonical URL
https://proflightsearch.com/flight/F91230
How we measure this →