Flight Reliability
DL 2143 · Delta Air Lines
Salt Lake City → Cleveland (SLC–CLE)80% of its flights flew this route. The rest (DSM–ATL, ATL–TVC) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.4%
- Cancelled
- 6 min early
- Median arrival delay
Based on 238 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
DL 2143 arrived on time 95% of the time on Saturdays and just 75% on Thursdays. That gap is worth planning around.
Trending in the right direction.
DL 2143 arrived on time 91% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon79%(34 flights)
- Tue88%(34 flights)
- Wed78%(32 flights)
- Thu75%(32 flights)
- Fri86%(29 flights)
- Sat95%(37 flights)
- Sun78%(37 flights)
- 6–9 AM—(7 flights)
- 9 AM–12 PM—(4 flights)
- 3–6 PM83%(224 flights)
100%
Apr
Jun 79% → Apr 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 29 |
| July 2025 | 84% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 86% | 29 |
| October 2025 | 77% | 30 |
| November 2025 | 90% | 30 |
| March 2026 | 83% | 24 |
| April 2026 | 100% | 11 |
- Departures on time
- 83%
- Diverted
- 0.8%
- Flights flown
- 235
- Months covered
- 11
Same route, other flights
Keep nerding
Based on 238 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.