Flight Reliability
F9 1242 · Frontier Airlines
Atlanta → Orlando (ATL–MCO)
66
Usually Fine
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 48 min
- Average arrival delay
- 0.9%
- Cancelled
- 4 min early
- Median arrival delay
Based on 110 historical flights. Data through May 2026.
What the data says
The 3–6 AM departure wins.
F9 1242 departing between 3–6 AM arrived on time 92% of the time, versus 78% between 6–9 AM.
Wednesdays have been rough.
F9 1242 arrived on time 90% of the time on Thursdays and just 73% on Wednesdays. That gap is worth planning around.
Better than the ATL–MCO route average.
F9 1242 arrived on time 81% of the time, versus 70% across the ATL–MCO route.
Better than the Frontier Airlines network average.
F9 1242 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon82%(17 flights)
- Tue—(7 flights)
- Wed73%(11 flights)
- Thu90%(19 flights)
- Fri79%(19 flights)
- Sat78%(18 flights)
- Sun78%(18 flights)
- 3–6 AM92%(47 flights)
- 6–9 AM78%(54 flights)
- 9 AM–12 PM—(4 flights)
- 12–3 PM—(4 flights)
96%
May
Dec 100% → May 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| December 2025 | 100% | 14 |
| February 2026 | 64% | 11 |
| March 2026 | 68% | 25 |
| April 2026 | 75% | 24 |
| May 2026 | 96% | 22 |
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 109
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 110 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.