Skip to content
WanderNerd
Check a flight

Flight Reliability

F9 3379 · Frontier Airlines

Philadelphia → Miami (PHL–MIA)

72
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
18 min
Average arrival delay
1.2%
Cancelled
6 min early
Median arrival delay

Based on 83 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

F9 3379 departing between 6–9 PM arrived on time 80% of the time, versus 64% between 9 AM–12 PM.

Mondays have been rough.

F9 3379 arrived on time 85% of the time on Fridays and just 64% on Mondays. That gap is worth planning around.

A bit behind the PHL–MIA route.

F9 3379 arrived on time 73% of the time, versus 77% across the PHL–MIA route.

The breakdown

On-time by weekday
  • Mon64%(11 flights)
  • Tue—(3 flights)
  • Wed—(3 flights)
  • Thu71%(17 flights)
  • Fri85%(26 flights)
  • Sat—(9 flights)
  • Sun69%(13 flights)
On-time by departure window
  • 3–6 AM—(4 flights)
  • 6–9 AM—(5 flights)
  • 9 AM–12 PM64%(33 flights)
  • 12–3 PM67%(12 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM80%(20 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
46%
Apr

Dec 73% → Apr 46% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202573%11
January 202677%13
February 202670%10
April 202646%13
Departures on time
76%
Diverted
0%
Flights flown
82
Months covered
9

Same route, other flights

Keep nerding

Based on 83 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.