Flight Reliability
DL 1980 · Delta Air Lines
Salt Lake City → Austin (SLC–AUS)89% of its flights flew this route. The rest (MCO–BOS) are included in these numbers.
86
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0%
- Cancelled
- 6 min early
- Median arrival delay
Based on 219 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
DL 1980 arrived on time 94% of the time on Wednesdays and just 65% on Sundays. That gap is worth planning around.
It basically never cancels.
Out of 219 scheduled flights, only 0.0% were cancelled.
Slipping a little lately.
DL 1980 arrived on time 79% of the time over the last three months in the data, compared with 82% in the three months before that.
The breakdown
- Mon88%(32 flights)
- Tue81%(31 flights)
- Wed94%(32 flights)
- Thu81%(31 flights)
- Fri74%(31 flights)
- Sat80%(30 flights)
- Sun65%(31 flights)
78%
Apr
Jun 91% → Apr 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 91% | 23 |
| July 2025 | 68% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 70% | 30 |
| November 2025 | 80% | 30 |
| December 2025 | 79% | 19 |
| April 2026 | 78% | 18 |
- Departures on time
- 86%
- Diverted
- 0.5%
- Flights flown
- 218
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 219 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.