Flight Reliability
DL 427 · Delta Air Lines
Honolulu → Los Angeles (HNL–LAX)
91
Nerd Approved
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Thursday is the weak spot.
DL 427 arrived on time 89% of the time on Saturdays. On Thursdays: 79%.
It basically never cancels.
Out of 365 scheduled flights, only 0.0% were cancelled.
Recent months have been rougher.
DL 427 arrived on time 70% of the time over the last three months in the data, compared with 81% in the three months before that.
The breakdown
- Mon83%(52 flights)
- Tue85%(52 flights)
- Wed85%(52 flights)
- Thu79%(52 flights)
- Fri85%(52 flights)
- Sat89%(52 flights)
- Sun79%(53 flights)
87%
May
Jun 93% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 93% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 97% | 31 |
| September 2025 | 80% | 30 |
| October 2025 | 100% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 94% | 31 |
| January 2026 | 74% | 31 |
| February 2026 | 75% | 28 |
| March 2026 | 42% | 31 |
| April 2026 | 80% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 365
- 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.