Flight Reliability
F9 4834 · Frontier Airlines
Cleveland → Boston (CLE–BOS)
90
Nerd Approved
WanderNerd Reliability Score
- 91%
- Arrive within 15 minutes
- 8 min early
- Average arrival delay
- 2.1%
- Cancelled
- 14 min early
- Median arrival delay
Based on 97 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
F9 4834 departing between 6–9 AM arrived on time 94% of the time, versus 78% between 3–6 AM.
Skip Monday if you can.
F9 4834 arrived on time 96% of the time on Sundays. On Mondays: 84%.
Better than the CLE–BOS route average.
F9 4834 arrived on time 91% of the time, versus 79% across the CLE–BOS route.
Well ahead of the Frontier Airlines network.
F9 4834 arrived on time 91% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon84%(19 flights)
- Tue—(1 flights)
- Wed—(0 flights)
- Thu96%(26 flights)
- Fri85%(20 flights)
- Sat—(2 flights)
- Sun96%(27 flights)
- 3–6 AM78%(18 flights)
- 6–9 AM94%(71 flights)
- 9 AM–12 PM—(6 flights)
88%
Nov
Aug 100% → Nov 88% on time
| Month | On-time percentage | Flights |
|---|---|---|
| August 2025 | 100% | 11 |
| September 2025 | 100% | 17 |
| October 2025 | 94% | 18 |
| November 2025 | 88% | 16 |
- Departures on time
- 96%
- Diverted
- 0%
- Flights flown
- 95
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 97 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.