Flight Reliability
DL 428 · Delta Air Lines
Los Angeles → Lihue (LAX–LIH)
87
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 1.1%
- Cancelled
- 12 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
DL 428 departing between 12–3 PM arrived on time 88% of the time, versus 73% between 3–6 PM.
Thursday has been the better bet.
A small edge: 87% on time on Thursdays against 80% on Wednesdays.
Slipping a little lately.
DL 428 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
- Mon80%(51 flights)
- Tue81%(52 flights)
- Wed80%(51 flights)
- Thu87%(52 flights)
- Fri81%(52 flights)
- Sat87%(52 flights)
- Sun86%(51 flights)
- 12–3 PM88%(245 flights)
- 3–6 PM73%(116 flights)
97%
May
Jun 63% → May 97% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 63% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 90% | 31 |
| September 2025 | 97% | 30 |
| October 2025 | 87% | 30 |
| November 2025 | 90% | 30 |
| December 2025 | 71% | 31 |
| January 2026 | 83% | 29 |
| February 2026 | 93% | 28 |
| March 2026 | 73% | 30 |
| April 2026 | 67% | 30 |
| May 2026 | 97% | 31 |
- Departures on time
- 85%
- Diverted
- 0%
- Flights flown
- 361
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.