Route
SEA → KOA
Seattle–Tacoma International Airport Ellison Onizuka Kona International Airport at Keāhole
2,688 miles
Return route KOA → SEA →
How punctual is this route?
- On-time arrivals
- 74.5%
- Less than 15 minutes late
- Cancelled
- 1.4%
- Of scheduled flights
- Average delay when late
- 54 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,410
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 38%
- Air traffic control & airport 31%
- Late-arriving aircraft 29%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.3% | 111 |
| October 2025 | 71.6% | 122 |
| November 2025 | 75.9% | 117 |
| December 2025 | 71.8% | 123 |
| January 2026 | 70.2% | 124 |
| February 2026 | 65.2% | 113 |
| March 2026 | 57.0% | 124 |
| April 2026 | 93.7% | 111 |
| May 2026 | 85.6% | 112 |
| June 2026 | 81.7% | 120 |
| July 2026 | 74.4% | 123 |
| August 2026 | 69.2% | 110 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Alaska Airlines | 1,045 | 73.9% | 1.1% | 55 min |
| Delta Air Lines | 365 | 76.1% | 2.2% | 51 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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