Flight Reliability
DL 3692 · Delta Air Lines
Seattle → Boise (SEA–BOI)90% of its flights flew this route. The rest (BOI–SEA, BTV–DTW) are included in these numbers.
- 83%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0.3%
- Cancelled
- 10 min early
- Median arrival delay
Based on 384 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
DL 3692 departing between 6–9 PM arrived on time 89% of the time, versus 31% between 3–6 AM.
Sunday scaries are real for this one.
DL 3692 arrived on time 89% of the time on Tuesdays. On Sundays: 78%.
It basically never cancels.
Out of 384 scheduled flights, only 0.3% were cancelled.
Trending in the right direction.
DL 3692 arrived on time 87% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon80%(55 flights)
- Tue89%(55 flights)
- Wed85%(54 flights)
- Thu80%(56 flights)
- Fri88%(56 flights)
- Sat81%(52 flights)
- Sun78%(55 flights)
- 3–6 AM31%(16 flights)
- 3–6 PM87%(281 flights)
- 6–9 PM89%(66 flights)
- 9 PM–12 AM50%(20 flights)
Jun 77% → May 72% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 77% | 30 |
| July 2025 | 84% | 31 |
| August 2025 | 93% | 30 |
| September 2025 | 83% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 93% | 30 |
| December 2025 | 59% | 32 |
| January 2026 | 81% | 31 |
| February 2026 | 79% | 28 |
| March 2026 | 100% | 30 |
| April 2026 | 90% | 30 |
| May 2026 | 72% | 50 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 383
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 384 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.