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Flight Reliability

F9 3340 · Frontier Airlines

Denver → Philadelphia (DEN–PHL)

58
A Little Dicey
WanderNerd Reliability Score
62%
Arrive within 15 minutes
20 min
Average arrival delay
1.9%
Cancelled
2 min
Median arrival delay

Based on 257 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

F9 3340 departing between 6–9 PM arrived on time 74% of the time, versus 61% between 9 PM–12 AM.

Mondays have been rough.

F9 3340 arrived on time 86% of the time on Wednesdays and just 43% on Mondays. That gap is worth planning around.

Lagging the DEN–PHL route.

F9 3340 arrived on time 62% of the time, versus 73% across the DEN–PHL route.

Lagging the Frontier Airlines network.

F9 3340 arrived on time 62% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon43%(35 flights)
  • Tue84%(19 flights)
  • Wed86%(35 flights)
  • Thu59%(44 flights)
  • Fri56%(48 flights)
  • Sat67%(24 flights)
  • Sun57%(47 flights)
On-time by departure window
  • 6–9 AM—(2 flights)
  • 9 AM–12 PM73%(11 flights)
  • 12–3 PM—(3 flights)
  • 6–9 PM74%(19 flights)
  • 9 PM–12 AM61%(217 flights)
On-time trend by month
65%
May

Jun 59% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202559%29
July 202555%31
August 202558%26
September 202581%16
October 202584%19
November 202586%21
December 202520%15
March 202635%17
April 202676%29
May 202665%31
Departures on time
63%
Diverted
0%
Flights flown
252
Months covered
12

Same route, other flights

Keep nerding

Based on 257 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.