Flight Reliability
F9 2135 · Frontier Airlines
Miami → Dallas–Fort Worth (MIA–DFW)
69
Usually Fine
WanderNerd Reliability Score
- 73%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 3.0%
- Cancelled
- 10 min early
- Median arrival delay
Based on 99 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 2135 departing between 6–9 PM arrived on time 81% of the time, versus 72% between 3–6 PM.
Saturdays have been rough.
F9 2135 arrived on time 90% of the time on Wednesdays and just 57% on Saturdays. That gap is worth planning around.
The breakdown
- Mon63%(16 flights)
- Tue80%(10 flights)
- Wed90%(10 flights)
- Thu73%(11 flights)
- Fri85%(20 flights)
- Sat57%(14 flights)
- Sun67%(15 flights)
- 6–9 AM75%(16 flights)
- 9 AM–12 PM—(5 flights)
- 12–3 PM—(9 flights)
- 3–6 PM72%(50 flights)
- 6–9 PM81%(16 flights)
75%
May
Nov 80% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| November 2025 | 80% | 15 |
| December 2025 | 65% | 17 |
| January 2026 | 69% | 13 |
| March 2026 | 65% | 23 |
| May 2026 | 75% | 12 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 96
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 99 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.