Flight Reliability
F9 4036 · Frontier Airlines
Atlanta → Cleveland (ATL–CLE)
43
Bring Snacks
WanderNerd Reliability Score
- 58%
- Arrive within 15 minutes
- 25 min
- Average arrival delay
- 3.4%
- Cancelled
- 9 min
- Median arrival delay
Based on 262 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 4036 departing between 6–9 PM arrived on time 65% of the time, versus 57% between 9 PM–12 AM.
Saturdays have been rough.
F9 4036 arrived on time 71% of the time on Fridays and just 46% on Saturdays. That gap is worth planning around.
Well behind the ATL–CLE route.
F9 4036 arrived on time 58% of the time, versus 80% across the ATL–CLE route.
Well behind the Frontier Airlines network.
F9 4036 arrived on time 58% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon54%(50 flights)
- Tue60%(10 flights)
- Wed46%(13 flights)
- Thu63%(46 flights)
- Fri71%(51 flights)
- Sat46%(37 flights)
- Sun56%(45 flights)
- 3–6 PM—(8 flights)
- 6–9 PM65%(23 flights)
- 9 PM–12 AM57%(221 flights)
65%
May
Jun 40% → May 65% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 40% | 20 |
| July 2025 | 57% | 21 |
| August 2025 | 55% | 20 |
| September 2025 | 88% | 17 |
| October 2025 | 67% | 21 |
| November 2025 | 55% | 20 |
| December 2025 | 44% | 25 |
| January 2026 | 69% | 26 |
| February 2026 | 58% | 24 |
| March 2026 | 57% | 23 |
| April 2026 | 40% | 15 |
| May 2026 | 65% | 20 |
- Departures on time
- 52%
- Diverted
- 0.4%
- Flights flown
- 252
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 262 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.