Flight Reliability
DL 4770 · Delta Air Lines
Madison → Detroit (MSN–DTW)95% of its flights flew this route. The rest (FSD–MSP, MSP–FSD) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 88%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 2.4%
- Cancelled
- 13 min early
- Median arrival delay
Based on 42 historical flights. Data through May 2026.
What the data says
A bit ahead of the MSN–DTW route.
DL 4770 arrived on time 88% of the time, versus 83% across the MSN–DTW route.
A bit ahead of the Delta Air Lines network.
DL 4770 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon—(5 flights)
- Tue—(5 flights)
- Wed—(6 flights)
- Thu—(6 flights)
- Fri—(6 flights)
- Sat—(7 flights)
- Sun—(6 flights)
- 6–9 AM87%(39 flights)
- 12–3 PM—(1 flights)
- 3–6 PM—(1 flights)
- Departures on time
- 88%
- Diverted
- 0%
- Flights flown
- 41
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 42 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.