ON TIMEBOARD

F9 3156 on time

Frontier Airlines 3156: Los Angeles to Denver at 6:30 a.m. (past 12 months)

On time
89%
361 flights · likely 85–92%
Cancelled
0.3%
of scheduled flights
Typical arrival
−9 min
median vs schedule
When late
+71 min
average delay
Similar flights
88%
F9, same route & hour

About 1 in 9 F9 3156 flights from Los Angeles arrived 15+ minutes late, diverted or cancelled over the past year (11%); 0.3% were cancelled. The typical flight landed 9 minutes early.

F9 3156: LAX → DEN

Scheduled to leave Los Angeles at 6:30 a.m. local time. Over the past year it arrived on time 89% of the time (361 flights), in line with other F9 flights on the route at that hour (88%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 83% on time (30 flights)83SepOct 2025: 90% on time (31 flights)90OctNov 2025: 97% on time (29 flights)97NovDec 2025: 79% on time (28 flights)79DecJan 2026: 94% on time (31 flights)94JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 84% on time (31 flights)84MarApr 2026: 90% on time (30 flights)90AprMay 2026: 90% on time (31 flights)90MayJun 2026: 90% on time (30 flights)90JunJul 2026: 97% on time (31 flights)97JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday5389%
Tuesday5288%
Wednesday5288%
Thursday5192%
Friday5292%
Saturday4978%
Sunday5294%

Why it was late

Airline (crew, maintenance, ops) 38%Late inbound plane 36%Air traffic & airport (NAS) 25%Severe weather 1%

All flights LAX → DEN · Connecting off F9 3156? Check the risk

Questions

How often is F9 3156 from LAX to DEN late?

Frontier Airlines 3156 from Los Angeles, CA to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 11% of 361 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Frontier Airlines for today's flight. Method.