Flight Reliability
DL 1265 · Delta Air Lines
Seattle → Salt Lake City (SEA–SLC)93% of its flights flew this route. The rest (CHS–LGA, LGA–CHS) are included in these numbers.
- 84%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 1.1%
- Cancelled
- 7 min early
- Median arrival delay
Based on 368 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
DL 1265 departing between 9 AM–12 PM arrived on time 85% of the time, versus 58% between 3–6 PM.
Thursdays have been rough.
DL 1265 arrived on time 93% of the time on Sundays and just 74% on Thursdays. That gap is worth planning around.
Trending in the right direction.
DL 1265 arrived on time 90% of the time over the last three months in the data, compared with 74% in the three months before that.
The breakdown
- Mon79%(52 flights)
- Tue87%(54 flights)
- Wed86%(50 flights)
- Thu74%(50 flights)
- Fri82%(51 flights)
- Sat87%(52 flights)
- Sun93%(55 flights)
- 9 AM–12 PM85%(341 flights)
- 3–6 PM58%(12 flights)
- 6–9 PM73%(11 flights)
Jun 83% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 29 |
| July 2025 | 84% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 90% | 30 |
| November 2025 | 86% | 28 |
| December 2025 | 78% | 36 |
| January 2026 | 73% | 30 |
| February 2026 | 71% | 28 |
| March 2026 | 90% | 30 |
| April 2026 | 93% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 83%
- Diverted
- 0%
- Flights flown
- 364
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 368 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.