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Flight Reliability

F9 4061 · Frontier Airlines

Madison → Denver (MSN–DEN)

48
Bring Snacks
WanderNerd Reliability Score
62%
Arrive within 15 minutes
36 min
Average arrival delay
1.5%
Cancelled
2 min early
Median arrival delay

Based on 136 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 4061 departing between 12–3 PM arrived on time 91% of the time, versus 46% between 3–6 PM.

Tuesdays have been rough.

F9 4061 arrived on time 71% of the time on Fridays and just 50% on Tuesdays. That gap is worth planning around.

Well behind the MSN–DEN route.

F9 4061 arrived on time 62% of the time, versus 80% across the MSN–DEN route.

Lagging the Frontier Airlines network.

F9 4061 arrived on time 62% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon63%(19 flights)
  • Tue50%(12 flights)
  • Wed—(3 flights)
  • Thu64%(36 flights)
  • Fri71%(21 flights)
  • Sat—(3 flights)
  • Sun67%(39 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM91%(11 flights)
  • 3–6 PM46%(11 flights)
  • 6–9 PM61%(110 flights)
On-time trend by month
67%
Mar

Jun 36% → Mar 67% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202536%11
July 202536%14
August 202569%13
September 202569%16
October 202572%18
November 202574%19
March 202667%15
Departures on time
64%
Diverted
0.7%
Flights flown
133
Months covered
11

Same route, other flights

Keep nerding

Based on 136 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.