Flight Reliability
F9 1518 · Frontier Airlines
Raleigh–Durham → Philadelphia (RDU–PHL)
38
Bring Snacks
WanderNerd Reliability Score
- 70%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 10.0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 30 historical flights. Data through May 2026.
What the data says
A bit behind the RDU–PHL route.
F9 1518 arrived on time 70% of the time, versus 74% across the RDU–PHL route.
The breakdown
- Mon—(4 flights)
- Tue—(5 flights)
- Wed—(4 flights)
- Thu—(3 flights)
- Fri—(3 flights)
- Sat—(5 flights)
- Sun—(3 flights)
- 3–6 PM—(9 flights)
- 6–9 PM—(3 flights)
- 9 PM–12 AM73%(15 flights)
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 27
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 30 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.