Flight Reliability
DL 534 · Delta Air Lines
Honolulu → Salt Lake City (HNL–SLC)
81
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 2.0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 303 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
DL 534 departing between 6–9 PM arrived on time 89% of the time, versus 77% between 9 AM–12 PM.
Saturdays have been rough.
DL 534 arrived on time 94% of the time on Wednesdays and just 73% on Saturdays. That gap is worth planning around.
Trending in the right direction.
DL 534 arrived on time 87% of the time over the last three months in the data, compared with 75% in the three months before that.
The breakdown
- Mon85%(41 flights)
- Tue80%(35 flights)
- Wed94%(32 flights)
- Thu91%(45 flights)
- Fri83%(47 flights)
- Sat73%(48 flights)
- Sun85%(47 flights)
- 9 AM–12 PM77%(111 flights)
- 12–3 PM79%(14 flights)
- 6–9 PM89%(170 flights)
90%
May
Jun 93% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 28 |
| July 2025 | 90% | 30 |
| August 2025 | 77% | 31 |
| September 2025 | 89% | 28 |
| November 2025 | 81% | 16 |
| December 2025 | 70% | 27 |
| January 2026 | 78% | 23 |
| February 2026 | 75% | 20 |
| March 2026 | 82% | 28 |
| April 2026 | 90% | 29 |
| May 2026 | 90% | 30 |
- Departures on time
- 89%
- Diverted
- 0.7%
- Flights flown
- 295
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 303 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.