Flight Reliability
DL 4446 · Delta Air Lines
Salt Lake City → Boise (SLC–BOI)
95
Nerd Approved
WanderNerd Reliability Score
- 87%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0%
- Cancelled
- 13 min early
- Median arrival delay
Based on 37 historical flights. Data through May 2026.
What the data says
A bit ahead of the Delta Air Lines network.
DL 4446 arrived on time 87% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon—(5 flights)
- Tue—(5 flights)
- Wed—(3 flights)
- Thu—(4 flights)
- Fri—(6 flights)
- Sat—(7 flights)
- Sun—(7 flights)
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 37
- Months covered
- 3
Same route, other flights
Keep nerding
Based on 37 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.