Flight Reliability
DL 4781 · Delta Air Lines
Indianapolis → Raleigh–Durham (IND–RDU)89% of its flights flew this route. The rest (DTW–GRR, GRR–DTW) are included in these numbers.
84
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 1.8%
- Cancelled
- 11 min early
- Median arrival delay
Based on 55 historical flights. Data through May 2026.
The breakdown
- Mon—(7 flights)
- Tue—(7 flights)
- Wed—(7 flights)
- Thu—(6 flights)
- Fri—(7 flights)
- Sat77%(13 flights)
- Sun—(7 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM82%(49 flights)
- 3–6 PM—(2 flights)
- 6–9 PM—(2 flights)
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 54
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 55 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.