Flight Reliability
F9 4001 · Frontier Airlines
Cleveland → Austin (CLE–AUS)
79
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 0%
- Cancelled
- 3 min early
- Median arrival delay
Based on 58 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
F9 4001 arrived on time 91% of the time on Fridays and just 60% on Sundays. That gap is worth planning around.
The breakdown
- Mon83%(12 flights)
- Tue—(2 flights)
- Wed—(1 flights)
- Thu60%(15 flights)
- Fri91%(11 flights)
- Sat—(2 flights)
- Sun60%(15 flights)
- 6–9 AM—(5 flights)
- 12–3 PM—(5 flights)
- 3–6 PM77%(44 flights)
- 6–9 PM—(4 flights)
- Departures on time
- 74%
- Diverted
- 0%
- Flights flown
- 58
- Months covered
- 8
Keep nerding
Based on 58 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.