Flight Reliability
DL 3525 · Delta Air Lines
SBA → Salt Lake City (SBA–SLC)99% of its flights flew this route. The rest (GRR–MSP) are included in these numbers.
100
Nerd Approved
WanderNerd Reliability Score
- 96%
- Arrive within 15 minutes
- 10 min early
- Average arrival delay
- 0.5%
- Cancelled
- 19 min early
- Median arrival delay
Based on 197 historical flights. Data through May 2026.
What the data says
Saturday is the weak spot.
DL 3525 arrived on time 100% of the time on Thursdays. On Saturdays: 89%.
Better than the Delta Air Lines network average.
DL 3525 arrived on time 96% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon96%(28 flights)
- Tue97%(29 flights)
- Wed93%(27 flights)
- Thu100%(28 flights)
- Fri100%(28 flights)
- Sat89%(28 flights)
- Sun96%(28 flights)
- 3–6 AM96%(194 flights)
- 12–3 PM—(2 flights)
90%
Dec
Jun 96% → Dec 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 96% | 25 |
| July 2025 | 97% | 30 |
| August 2025 | 94% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 100% | 31 |
| November 2025 | 97% | 30 |
| December 2025 | 90% | 19 |
- Departures on time
- 95%
- Diverted
- 0%
- Flights flown
- 196
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 197 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.