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Flight Reliability

F9 3517 · Frontier Airlines

Tampa → Denver (TPA–DEN)

84
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
6 min
Average arrival delay
1.0%
Cancelled
11 min early
Median arrival delay

Based on 99 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 3517 departing between 12–3 PM arrived on time 89% of the time, versus 71% between 3–6 PM.

Saturdays have been rough.

F9 3517 arrived on time 100% of the time on Mondays and just 66% on Saturdays. That gap is worth planning around.

A bit ahead of the Frontier Airlines network.

F9 3517 arrived on time 80% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon100%(12 flights)
  • Tue80%(10 flights)
  • Wed—(6 flights)
  • Thu—(6 flights)
  • Fri83%(18 flights)
  • Sat66%(29 flights)
  • Sun71%(17 flights)
On-time by departure window
  • 9 AM–12 PM82%(11 flights)
  • 12–3 PM89%(52 flights)
  • 3–6 PM71%(31 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
72%
Mar

Dec 84% → Mar 72% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202584%19
January 202695%21
February 202690%19
March 202672%18
Departures on time
79%
Diverted
0%
Flights flown
98
Months covered
10

Same route, other flights

Keep nerding

Based on 99 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.