Flight Reliability
HA 634 · Hawaiian Airlines
Honolulu → Seattle (HNL–SEA)
84
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 0.7%
- Cancelled
- 1 min early
- Median arrival delay
Based on 147 historical flights. Data through May 2026.
What the data says
Saturdays have been rough.
HA 634 arrived on time 95% of the time on Wednesdays and just 70% on Saturdays. That gap is worth planning around.
A bit ahead of the HNL–SEA route.
HA 634 arrived on time 82% of the time, versus 76% across the HNL–SEA route.
The breakdown
- Mon91%(21 flights)
- Tue76%(21 flights)
- Wed95%(21 flights)
- Thu76%(21 flights)
- Fri91%(21 flights)
- Sat70%(20 flights)
- Sun76%(21 flights)
80%
Oct
Jun 83% → Oct 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 90% | 31 |
| August 2025 | 90% | 30 |
| September 2025 | 67% | 30 |
| October 2025 | 80% | 25 |
- Departures on time
- 78%
- Diverted
- 0%
- Flights flown
- 146
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 147 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.