Flight Reliability
DL 3617 · Delta Air Lines
Salt Lake City → Oklahoma City (SLC–OKC)84% of its flights flew this route. The rest (TUS–SLC, DTW–CLE) are included in these numbers.
- 86%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0%
- Cancelled
- 7 min early
- Median arrival delay
Based on 229 historical flights. Data through May 2026.
What the data says
The 3–6 PM departure wins.
DL 3617 departing between 3–6 PM arrived on time 100% of the time, versus 84% between 6–9 PM.
Monday is the weak spot.
DL 3617 arrived on time 92% of the time on Saturdays. On Mondays: 81%.
A bit behind the SLC–OKC route.
DL 3617 arrived on time 86% of the time, versus 90% across the SLC–OKC route.
A bit ahead of the Delta Air Lines network.
DL 3617 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.
The breakdown
- Mon81%(32 flights)
- Tue84%(32 flights)
- Wed84%(32 flights)
- Thu84%(32 flights)
- Fri88%(32 flights)
- Sat92%(36 flights)
- Sun88%(33 flights)
- 12–3 PM—(7 flights)
- 3–6 PM100%(28 flights)
- 6–9 PM84%(194 flights)
Jun 83% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 61% | 31 |
| August 2025 | 81% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 30 |
| November 2025 | 96% | 28 |
| December 2025 | 90% | 19 |
| May 2026 | 100% | 25 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 229
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 229 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.