Flight Reliability
DL 2544 · Delta Air Lines
Denver → Salt Lake City (DEN–SLC)
93
Nerd Approved
WanderNerd Reliability Score
- 88%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0.4%
- Cancelled
- 11 min early
- Median arrival delay
Based on 256 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
DL 2544 arrived on time 100% of the time on Wednesdays and just 80% on Saturdays. That gap is worth planning around.
Better than the DEN–SLC route average.
DL 2544 arrived on time 88% of the time, versus 78% across the DEN–SLC route.
A bit ahead of the Delta Air Lines network.
DL 2544 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.
Ticking up lately.
DL 2544 arrived on time 88% of the time over the last three months in the data, compared with 83% in the three months before that.
The breakdown
- Mon84%(44 flights)
- Tue90%(41 flights)
- Wed100%(33 flights)
- Thu87%(39 flights)
- Fri89%(44 flights)
- Sat80%(46 flights)
- Sun—(7 flights)
90%
May
Jun 96% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 96% | 24 |
| July 2025 | 91% | 21 |
| August 2025 | 75% | 24 |
| September 2025 | 89% | 18 |
| October 2025 | 91% | 22 |
| November 2025 | 94% | 17 |
| December 2025 | 91% | 21 |
| January 2026 | 64% | 11 |
| February 2026 | 94% | 16 |
| March 2026 | 96% | 24 |
| April 2026 | 77% | 26 |
| May 2026 | 90% | 30 |
- Departures on time
- 91%
- Diverted
- 0.4%
- Flights flown
- 254
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 256 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.