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Flight Reliability

F9 2550 · Frontier Airlines

Denver → Dallas–Fort Worth (DEN–DFW)

84
Pretty Reliable
WanderNerd Reliability Score
78%
Arrive within 15 minutes
9 min
Average arrival delay
0.5%
Cancelled
9 min early
Median arrival delay

Based on 204 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 2550 departing between 9 AM–12 PM arrived on time 84% of the time, versus 64% between 3–6 PM.

Sunday scaries are real for this one.

F9 2550 arrived on time 90% of the time on Fridays and just 66% on Sundays. That gap is worth planning around.

A bit ahead of the Frontier Airlines network.

F9 2550 arrived on time 78% of the time, versus 73% across the Frontier Airlines network.

Ticking up lately.

F9 2550 arrived on time 78% of the time over the last three months in the data, compared with 73% in the three months before that.

The breakdown

On-time by weekday
  • Mon77%(30 flights)
  • Tue83%(18 flights)
  • Wed71%(17 flights)
  • Thu80%(44 flights)
  • Fri90%(30 flights)
  • Sat81%(26 flights)
  • Sun66%(38 flights)
On-time by departure window
  • 6–9 AM80%(114 flights)
  • 9 AM–12 PM84%(38 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM64%(42 flights)
  • 6–9 PM—(7 flights)
On-time trend by month
81%
May

Aug 72% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202572%18
September 202596%23
October 202582%28
November 202578%18
January 202669%13
February 202672%18
March 202670%20
April 202682%27
May 202681%21
Departures on time
78%
Diverted
0%
Flights flown
203
Months covered
12

Same route, other flights

Keep nerding

Based on 204 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.