The U.S. aircraft register, updated daily
Routes and flights · the DOT's airline reports, August 2025 to July 2026

Ellison Onizuka Kona International AT Keahole ⇄ Seattle-Tacoma International KOA–SEA

Airlines flew 2,788 flights between Ellison Onizuka Kona International AT Keahole KOA in Kailua-Kona, HI and Seattle-Tacoma International SEA in Seattle, WA in the twelve months to July 2026, both directions together: 408,557 passengers in 496,393 seats, 82% of them filled, and 960,841 pounds of freight. 2,688 miles, about 319 minutes in the air, on 2 airlines: Alaska Airlines Inc. (2,074), Delta Air Lines Inc. (714). Planning to fly it yourself? The weather and winds along this route right now.

2,788
flights, twelve months
KOA-SEA: 1,395 · SEA-KOA: 1,393
408,557
passengers
82% of seats filled
2,688
miles
about 319 minutes airborne
2
airlines
8 aircraft types

Flights by month both directions

0621241862481/254/257/2510/251/264/262427/26
By month, as a table
flights
1/25243
2/25221
3/25246
4/25240
5/25248
6/25235
7/25243
8/25237
9/25221
10/25235
11/25220
12/25236
1/26248
2/26223
3/26242
4/26222
5/26223
6/26239
7/26242

Passengers by month

09,92219,84429,76639,6881/254/257/2510/251/264/2635,1427/26
By month, as a table
passengers
1/2539,688
2/2534,961
3/2537,493
4/2535,868
5/2534,576
6/2535,287
7/2537,165
8/2534,912
9/2526,342
10/2532,968
11/2531,711
12/2535,798
1/2637,171
2/2634,491
3/2637,438
4/2633,874
5/2632,976
6/2635,734
7/2635,142

The airlines twelve months, both directions

AirlineFlightsPassengersSeats filledService
Alaska Airlines Inc. AS2,074292,68282%scheduled passenger service
Delta Air Lines Inc. DL714115,87584%scheduled passenger service

The aircraft as the airlines report their types

AircraftFlightsSeats a flightPassengers
Boeing B737 Max 9001,117178163,566
Boeing 737-80046715960,614
Airbus Industrie A321-200n42019468,435
Boeing 737-900ER35217849,911
Boeing 757-20028619346,018
Boeing B737 Max 80013816018,591
Boeing 757-30062341,100
Boeing 767-300/300ER2216322

KOA → SEA this direction alone · flown January 2025 to July 2026

1,395 flights of 1,429 scheduled, 206,593 passengers in 248,521 seats, 582,379 pounds of freight. Alaska Airlines Inc. 1,038; Delta Air Lines Inc. 357.

SEA → KOA this direction alone · flown January 2025 to July 2026

1,393 flights of 1,436 scheduled, 201,964 passengers in 247,872 seats, 378,462 pounds of freight. Alaska Airlines Inc. 1,036; Delta Air Lines Inc. 357.

Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Ellison Onizuka Kona International AT Keahole KOA and Seattle-Tacoma International SEA; all routes.