Route
KOA → SEA
Ellison Onizuka Kona International Airport at Keāhole Seattle–Tacoma International Airport
How punctual is this route?
- On-time arrivals
- 86.7%
- Less than 15 minutes late
- Cancelled
- 2.3%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,412
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Airline (crew, maintenance, cleaning) 31%
- Air traffic control & airport 29%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.4% | 111 |
| October 2025 | 84.7% | 122 |
| November 2025 | 88.3% | 118 |
| December 2025 | 82.1% | 123 |
| January 2026 | 82.3% | 124 |
| February 2026 | 84.7% | 113 |
| March 2026 | 86.0% | 124 |
| April 2026 | 93.6% | 111 |
| May 2026 | 85.7% | 112 |
| June 2026 | 91.6% | 120 |
| July 2026 | 89.2% | 123 |
| August 2026 | 86.8% | 111 |
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 | 1,047 | 85.8% | 1.9% | 65 min |
| Delta Air Lines | 365 | 89.5% | 3.3% | 53 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL485
9% late · 348 flights
-
AS205
19% late · 253 flights
-
AS259
9% late · 245 flights
-
AS218
13% late · 114 flights
-
AS513
7% late · 70 flights
-
AS1423
24% late · 60 flights
-
AS808
24% late · 55 flights
-
AS822
17% late · 55 flights
-
AS880
16% late · 45 flights
-
AS153
8% late · 42 flights
-
AS461
14% late · 41 flights
-
AS228
7% late · 28 flights
-
AS319
5% late · 20 flights
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