Flight Reliability
DL 3518 · Delta Air Lines
Salt Lake City → FAT (SLC–FAT)96% of its flights flew this route. The rest (DTW–IAD) are included in these numbers.
100
Nerd Approved
WanderNerd Reliability Score
- 93%
- Arrive within 15 minutes
- 5 min early
- Average arrival delay
- 0%
- Cancelled
- 11 min early
- Median arrival delay
Based on 198 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 3518 arrived on time 100% of the time on Wednesdays. On Sundays: 90%.
Better than the Delta Air Lines network average.
DL 3518 arrived on time 93% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 198 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon90%(29 flights)
- Tue93%(29 flights)
- Wed100%(29 flights)
- Thu93%(29 flights)
- Fri93%(29 flights)
- Sat92%(24 flights)
- Sun90%(29 flights)
- 3–6 PM—(2 flights)
- 6–9 PM94%(189 flights)
- 9 PM–12 AM—(7 flights)
100%
Dec
Jun 93% → Dec 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 97% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 89% | 28 |
| December 2025 | 100% | 17 |
- Departures on time
- 90%
- Diverted
- 0%
- Flights flown
- 198
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 198 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.