Flight Reliability
F9 4601 · Frontier Airlines
Newark → Atlanta (EWR–ATL)100% of its flights flew this route. The rest (TYS–ATL) are included in these numbers.
- 70%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 3.0%
- Cancelled
- 3 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
F9 4601 arrived on time 82% of the time on Tuesdays and just 52% on Sundays. That gap is worth planning around.
Lagging the EWR–ATL route.
F9 4601 arrived on time 70% of the time, versus 78% across the EWR–ATL route.
Keep a backup plan handy.
F9 4601 was cancelled 3.0% of the time. Typical for U.S. flights is around 1–2%.
Recent months have been rougher.
F9 4601 arrived on time 68% of the time over the last three months in the data, compared with 76% in the three months before that.
The breakdown
- Mon61%(49 flights)
- Tue82%(49 flights)
- Wed77%(51 flights)
- Thu73%(51 flights)
- Fri77%(52 flights)
- Sat71%(48 flights)
- Sun52%(52 flights)
- 3–6 AM71%(274 flights)
- 6–9 AM69%(77 flights)
- 9 AM–12 PM—(1 flights)
Jun 75% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 28 |
| July 2025 | 59% | 29 |
| August 2025 | 55% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 73% | 30 |
| November 2025 | 68% | 28 |
| December 2025 | 69% | 29 |
| January 2026 | 70% | 30 |
| February 2026 | 89% | 26 |
| March 2026 | 60% | 30 |
| April 2026 | 50% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 89%
- Diverted
- 0.5%
- Flights flown
- 352
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.