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Flight Reliability

F9 1791 · Frontier Airlines

Philadelphia → Pittsburgh (PHL–PIT)

60
A Little Dicey
WanderNerd Reliability Score
70%
Arrive within 15 minutes
18 min
Average arrival delay
3.3%
Cancelled
8 min early
Median arrival delay

Based on 122 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

F9 1791 arrived on time 76% of the time on Sundays. On Fridays: 63%.

Lagging the PHL–PIT route.

F9 1791 arrived on time 70% of the time, versus 77% across the PHL–PIT route.

A bit behind the Frontier Airlines network.

F9 1791 arrived on time 70% of the time, versus 73% across the Frontier Airlines network.

Keep a backup plan handy.

F9 1791 was cancelled 3.3% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon72%(29 flights)
  • Tue—(1 flights)
  • Wed—(1 flights)
  • Thu67%(27 flights)
  • Fri63%(27 flights)
  • Sat—(4 flights)
  • Sun76%(29 flights)
On-time by departure window
  • 12–3 PM71%(112 flights)
  • 3–6 PM—(6 flights)
On-time trend by month
50%
Dec

Jun 63% → Dec 50% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202563%16
July 202575%16
August 202565%17
September 202565%17
October 202567%18
November 202591%21
December 202550%10
Departures on time
73%
Diverted
0%
Flights flown
118
Months covered
8

Same route, other flights

Keep nerding

Based on 122 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.