Flight Reliability
DL 3548 · Delta Air Lines
Salt Lake City → RDM (SLC–RDM)
96
Nerd Approved
WanderNerd Reliability Score
- 94%
- Arrive within 15 minutes
- 9 min early
- Average arrival delay
- 0%
- Cancelled
- 13 min early
- Median arrival delay
Based on 194 historical flights. Data through May 2026.
What the data says
Skip Thursday if you can.
DL 3548 arrived on time 96% of the time on Mondays. On Thursdays: 85%.
Better than the Delta Air Lines network average.
DL 3548 arrived on time 94% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 194 scheduled flights, only 0.0% were cancelled.
Slipping a little lately.
DL 3548 arrived on time 91% of the time over the last three months in the data, compared with 96% in the three months before that.
The breakdown
- Mon96%(28 flights)
- Tue96%(27 flights)
- Wed96%(27 flights)
- Thu85%(26 flights)
- Fri96%(28 flights)
- Sat96%(27 flights)
- Sun89%(28 flights)
90%
Dec
Jun 96% → Dec 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 96% | 23 |
| July 2025 | 90% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 100% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 96% | 26 |
| December 2025 | 90% | 19 |
- Departures on time
- 94%
- Diverted
- 1.5%
- Flights flown
- 191
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 194 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.