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Flight Reliability

F9 4919 · Frontier Airlines

Orlando → Denver (MCO–DEN)

88
Pretty Reliable
WanderNerd Reliability Score
85%
Arrive within 15 minutes
1 min early
Average arrival delay
1.2%
Cancelled
13 min early
Median arrival delay

Based on 162 historical flights. Data through May 2026.

What the data says

3–6 PM has a slight edge.

Departures between 3–6 PM arrived on time 88% of the time, against 82% between 12–3 PM.

Mondays have been rough.

F9 4919 arrived on time 95% of the time on Saturdays and just 75% on Mondays. That gap is worth planning around.

A bit ahead of the MCO–DEN route.

F9 4919 arrived on time 85% of the time, versus 79% across the MCO–DEN route.

Better than the Frontier Airlines network average.

F9 4919 arrived on time 85% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon75%(28 flights)
  • Tue87%(23 flights)
  • Wed92%(25 flights)
  • Thu78%(18 flights)
  • Fri85%(26 flights)
  • Sat95%(20 flights)
  • Sun85%(20 flights)
On-time by departure window
  • 6–9 AM—(1 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM82%(85 flights)
  • 3–6 PM88%(73 flights)
On-time trend by month
100%
Apr

Jul 90% → Apr 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202590%10
September 202582%11
November 202591%11
December 202577%26
January 202686%29
February 202695%20
March 202674%19
April 2026100%18
Departures on time
82%
Diverted
0%
Flights flown
160
Months covered
12

Same route, other flights

Keep nerding

Based on 162 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.