Flight Reliability
F9 2531 · Frontier Airlines
Dallas–Fort Worth → Phoenix (DFW–PHX)
59
A Little Dicey
WanderNerd Reliability Score
- 60%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 1.6%
- Cancelled
- 2 min early
- Median arrival delay
Based on 64 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
F9 2531 departing between 3–6 PM arrived on time 82% of the time, versus 50% between 6–9 PM.
Sunday scaries are real for this one.
F9 2531 arrived on time 71% of the time on Thursdays and just 46% on Sundays. That gap is worth planning around.
Lagging the DFW–PHX route.
F9 2531 arrived on time 60% of the time, versus 72% across the DFW–PHX route.
Lagging the Frontier Airlines network.
F9 2531 arrived on time 60% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon58%(12 flights)
- Tue—(4 flights)
- Wed—(1 flights)
- Thu71%(14 flights)
- Fri56%(18 flights)
- Sat—(3 flights)
- Sun46%(11 flights)
- 12–3 PM—(1 flights)
- 3–6 PM82%(11 flights)
- 6–9 PM50%(20 flights)
- 9 PM–12 AM58%(31 flights)
79%
May
Oct 54% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 54% | 13 |
| January 2026 | 55% | 11 |
| May 2026 | 79% | 14 |
- Departures on time
- 65%
- Diverted
- 0%
- Flights flown
- 63
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 64 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.