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Flight Reliability

F9 1263 · Frontier Airlines

Detroit → Atlanta (DTW–ATL)

80
Pretty Reliable
WanderNerd Reliability Score
75%
Arrive within 15 minutes
10 min
Average arrival delay
0.9%
Cancelled
4 min early
Median arrival delay

Based on 233 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 1263 departing between 6–9 AM arrived on time 92% of the time, versus 64% between 6–9 PM.

Mondays have been rough.

F9 1263 arrived on time 100% of the time on Wednesdays and just 53% on Mondays. That gap is worth planning around.

A bit behind the DTW–ATL route.

F9 1263 arrived on time 75% of the time, versus 78% across the DTW–ATL route.

Trending in the right direction.

F9 1263 arrived on time 80% of the time over the last three months in the data, compared with 69% in the three months before that.

The breakdown

On-time by weekday
  • Mon53%(34 flights)
  • Tue67%(24 flights)
  • Wed100%(24 flights)
  • Thu74%(42 flights)
  • Fri83%(36 flights)
  • Sat93%(30 flights)
  • Sun66%(41 flights)
On-time by departure window
  • 6–9 AM92%(24 flights)
  • 9 AM–12 PM75%(87 flights)
  • 12–3 PM67%(33 flights)
  • 3–6 PM79%(56 flights)
  • 6–9 PM64%(25 flights)
  • 9 PM–12 AM—(6 flights)
On-time trend by month
84%
May

Aug 87% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202587%15
September 202579%29
October 202568%31
November 202566%29
December 202574%19
March 202676%25
April 202679%28
May 202684%31
Departures on time
75%
Diverted
0%
Flights flown
231
Months covered
12

Same route, other flights

Keep nerding

Based on 233 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.