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4,327 km · Domestic

Ellison Onizuka Kona International Airport at Keāhole (KOA) – Seattle–Tacoma (SEA)

In July 2026, 241 flights operated between Ellison Onizuka Kona International Airport at Keāhole and Seattle–Tacoma (both directions), and 83.0% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January241248▲ 2.9%
February221224▲ 1.4%
March246242▼ 1.6%
April240221▼ 7.9%
May248224▼ 9.7%
June236239▲ 1.3%
July242241▼ 0.4%
August237––
September221––
October236–in progress
November226––
December236––
Year to date (Jan–Jul)1,6741,639▼ 2.1%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January80.1%78.6%▼ 1.9%
February83.3%74.6%▼ 10.4%
March85.0%76.0%▼ 10.6%
April83.8%91.9%▲ 9.7%
May84.3%84.4%▲ 0.1%
June76.7%83.3%▲ 8.6%
July75.6%83.0%▲ 9.8%
August81.4%––
September87.3%––
October83.5%–in progress
November88.5%––
December77.5%––
Year-to-date average (Jan–Jul)81.3%81.7%▲ 0.5%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January60▼ 100.0%
February12▲ 100.0%
March26▲ 200.0%
April01–
May00–
June41▼ 75.0%
July45▲ 25.0%
August5––
September1––
October8–in progress
November9––
December10––
Year to date (Jan–Jul)1715▼ 11.8%

Airlines on this route

  1. Alaska Airlines 74.2%
  2. Delta Air Lines 25.8%

Oct 1, 2024 – Jul 31, 2026

By direction

KOA → SEA

Scheduled flights
2,553
Flights operated
2,508
Cancelled
45 · 1.8%
On-time departures
87.8%

SEA → KOA

Scheduled flights
2,552
Flights operated
2,530
Cancelled
22 · 0.9%
On-time departures
76.4%

KOA → SEA and SEA → KOA counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
Alaska Airlines AS 3,789 74.2% 80.8% 43
Delta Air Lines DL 1,316 25.8% 85.8% 24

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay20:00–21:000.4min · 286 recorded · 279 measured
Gap to highest-delay hour14.3min20:00 ↔ 11:00
Recorded flights5,105KOA–SEA

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 08:00 · 91.1% · 600 recorded · 587 measured · Source: the US BTS 09:00 · 87.1% · 251 recorded · 248 measured · Source: the US BTS 10:00 · 78.2% · 389 recorded · 386 measured · Source: the US BTS 11:00 · 73.4% · 339 recorded · 338 measured · Source: the US BTS 12:00 · 71.3% · 434 recorded · 432 measured · Source: the US BTS 13:00 · 80.8% · 355 recorded · 354 measured · Source: the US BTS 14:00 · 83.9% · 548 recorded · 545 measured · Source: the US BTS 15:00 · 78.1% · 211 recorded · 205 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 151 recorded · 148 measured · Source: the US BTS 18:00 · 69.9% · 378 recorded · 372 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 73 recorded · 72 measured · Source: the US BTS 20:00 · 89.6% · 286 recorded · 279 measured · Source: the US BTS 21:00 · 88.5% · 789 recorded · 774 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 136 recorded · 134 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 96 recorded · 95 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · Fewer than 200 measured departures · 43 recorded · 43 measured · Source: the US BTS 08:00 · 3.9 min · 600 recorded · 587 measured · Source: the US BTS 09:00 · 8.3 min · 251 recorded · 248 measured · Source: the US BTS 10:00 · 11.2 min · 389 recorded · 386 measured · Source: the US BTS 11:00 · 14.7 min · 339 recorded · 338 measured · Source: the US BTS 12:00 · 12.2 min · 434 recorded · 432 measured · Source: the US BTS 13:00 · 9.1 min · 355 recorded · 354 measured · Source: the US BTS 14:00 · 8.9 min · 548 recorded · 545 measured · Source: the US BTS 15:00 · 10.3 min · 211 recorded · 205 measured · Source: the US BTS 16:00 · Fewer than 200 measured departures · 25 recorded · 25 measured · Source: the US BTS 17:00 · Fewer than 200 measured departures · 151 recorded · 148 measured · Source: the US BTS 18:00 · 14.0 min · 378 recorded · 372 measured · Source: the US BTS 19:00 · Fewer than 200 measured departures · 73 recorded · 72 measured · Source: the US BTS 20:00 · 0.4 min · 286 recorded · 279 measured · Source: the US BTS 21:00 · 1.9 min · 789 recorded · 774 measured · Source: the US BTS 22:00 · Fewer than 200 measured departures · 136 recorded · 134 measured · Source: the US BTS 23:00 · Fewer than 200 measured departures · 96 recorded · 95 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 06:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 07:00 · 43 · 43 recorded · 43 measured · Source: the US BTS 08:00 · 600 · 600 recorded · 587 measured · Source: the US BTS 09:00 · 251 · 251 recorded · 248 measured · Source: the US BTS 10:00 · 389 · 389 recorded · 386 measured · Source: the US BTS 11:00 · 339 · 339 recorded · 338 measured · Source: the US BTS 12:00 · 434 · 434 recorded · 432 measured · Source: the US BTS 13:00 · 355 · 355 recorded · 354 measured · Source: the US BTS 14:00 · 548 · 548 recorded · 545 measured · Source: the US BTS 15:00 · 211 · 211 recorded · 205 measured · Source: the US BTS 16:00 · 25 · 25 recorded · 25 measured · Source: the US BTS 17:00 · 151 · 151 recorded · 148 measured · Source: the US BTS 18:00 · 378 · 378 recorded · 372 measured · Source: the US BTS 19:00 · 73 · 73 recorded · 72 measured · Source: the US BTS 20:00 · 286 · 286 recorded · 279 measured · Source: the US BTS 21:00 · 789 · 789 recorded · 774 measured · Source: the US BTS 22:00 · 136 · 136 recorded · 134 measured · Source: the US BTS 23:00 · 96 · 96 recorded · 95 measured · Source: the US BTS

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View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00Fewer than 200 measured departures—11
06:00No observations———
07:00Fewer than 200 measured departures—4343
08:0091.1%3.9 min587600
09:0087.1%8.3 min248251
10:0078.2%11.2 min386389
11:0073.4%14.7 min338339
12:0071.3%12.2 min432434
13:0080.8%9.1 min354355
14:0083.9%8.9 min545548
15:0078.1%10.3 min205211
16:00Fewer than 200 measured departures—2525
17:00Fewer than 200 measured departures—148151
18:0069.9%14.0 min372378
19:00Fewer than 200 measured departures—7273
20:0089.6%0.4 min279286
21:0088.5%1.9 min774789
22:00Fewer than 200 measured departures—134136
23:00Fewer than 200 measured departures—9596

Day of week

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Monday · 79.3% · 735 recorded · 725 measured · Source: the US BTS Tuesday · 86.0% · 721 recorded · 712 measured · Source: the US BTS Wednesday · 83.6% · 720 recorded · 713 measured · Source: the US BTS Thursday · 83.2% · 729 recorded · 721 measured · Source: the US BTS Friday · 79.5% · 731 recorded · 717 measured · Source: the US BTS Saturday · 81.2% · 734 recorded · 727 measured · Source: the US BTS Sunday · 82.0% · 735 recorded · 723 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Monday · 10.3 min · 735 recorded · 725 measured · Source: the US BTS Tuesday · 5.2 min · 721 recorded · 712 measured · Source: the US BTS Wednesday · 6.4 min · 720 recorded · 713 measured · Source: the US BTS Thursday · 7.6 min · 729 recorded · 721 measured · Source: the US BTS Friday · 9.3 min · 731 recorded · 717 measured · Source: the US BTS Saturday · 8.3 min · 734 recorded · 727 measured · Source: the US BTS Sunday · 7.5 min · 735 recorded · 723 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 735 · 735 recorded · 725 measured · Source: the US BTS Tuesday · 721 · 721 recorded · 712 measured · Source: the US BTS Wednesday · 720 · 720 recorded · 713 measured · Source: the US BTS Thursday · 729 · 729 recorded · 721 measured · Source: the US BTS Friday · 731 · 731 recorded · 717 measured · Source: the US BTS Saturday · 734 · 734 recorded · 727 measured · Source: the US BTS Sunday · 735 · 735 recorded · 723 measured · Source: the US BTS

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View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
Monday79.3%10.3 min725735
Tuesday86.0%5.2 min712721
Wednesday83.6%6.4 min713720
Thursday83.2%7.6 min721729
Friday79.5%9.3 min717731
Saturday81.2%8.3 min727734
Sunday82.0%7.5 min723735

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
Jan · 79.4% · 495 recorded · 489 measured · Source: the US BTS Feb · 78.9% · 448 recorded · 445 measured · Source: the US BTS Mar · 80.5% · 496 recorded · 488 measured · Source: the US BTS Apr · 87.6% · 462 recorded · 461 measured · Source: the US BTS May · 84.3% · 472 recorded · 472 measured · Source: the US BTS Jun · 80.0% · 480 recorded · 475 measured · Source: the US BTS Jul · 79.3% · 492 recorded · 483 measured · Source: the US BTS Aug · 81.4% · 242 recorded · 237 measured · Source: the US BTS Sep · 87.3% · 222 recorded · 221 measured · Source: the US BTS Oct · 84.9% · 404 recorded · 396 measured · Source: the US BTS Nov · 88.1% · 430 recorded · 421 measured · Source: the US BTS Dec · 76.9% · 462 recorded · 450 measured · Source: the US BTS

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Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
Jan · 8.4 min · 495 recorded · 489 measured · Source: the US BTS Feb · 9.0 min · 448 recorded · 445 measured · Source: the US BTS Mar · 11.2 min · 496 recorded · 488 measured · Source: the US BTS Apr · 3.7 min · 462 recorded · 461 measured · Source: the US BTS May · 5.1 min · 472 recorded · 472 measured · Source: the US BTS Jun · 10.4 min · 480 recorded · 475 measured · Source: the US BTS Jul · 8.7 min · 492 recorded · 483 measured · Source: the US BTS Aug · 7.2 min · 242 recorded · 237 measured · Source: the US BTS Sep · 3.0 min · 222 recorded · 221 measured · Source: the US BTS Oct · 6.1 min · 404 recorded · 396 measured · Source: the US BTS Nov · 4.5 min · 430 recorded · 421 measured · Source: the US BTS Dec · 12.8 min · 462 recorded · 450 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 495 · 495 recorded · 489 measured · Source: the US BTS Feb · 448 · 448 recorded · 445 measured · Source: the US BTS Mar · 496 · 496 recorded · 488 measured · Source: the US BTS Apr · 462 · 462 recorded · 461 measured · Source: the US BTS May · 472 · 472 recorded · 472 measured · Source: the US BTS Jun · 480 · 480 recorded · 475 measured · Source: the US BTS Jul · 492 · 492 recorded · 483 measured · Source: the US BTS Aug · 242 · 242 recorded · 237 measured · Source: the US BTS Sep · 222 · 222 recorded · 221 measured · Source: the US BTS Oct · 404 · 404 recorded · 396 measured · Source: the US BTS Nov · 430 · 430 recorded · 421 measured · Source: the US BTS Dec · 462 · 462 recorded · 450 measured · Source: the US BTS

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View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
Jan79.4%8.4 min489495
Feb78.9%9.0 min445448
Mar80.5%11.2 min488496
Apr87.6%3.7 min461462
May84.3%5.1 min472472
Jun80.0%10.4 min475480
Jul79.3%8.7 min483492
Aug81.4%7.2 min237242
Sep87.3%3.0 min221222
Oct84.9%6.1 min396404
Nov88.1%4.5 min421430
Dec76.9%12.8 min450462

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 81.0% 4,136
  • Delayed >15 min 17.7% 902
  • Cancelled 1.3% 67
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

24
24 of 24
Flight numbersBy direction DeparturesOn time
DL340 SEA → KOA 658 83.9%
DL485 KOA → SEA 623 90.0%
AS843 SEA → KOA 379 68.5%
AS808 KOA → SEA 370 87.5%
AS880 KOA → SEA 363 90.3%
AS801 SEA → KOA 324 71.4%
AS205 KOA → SEA 235 83.0%
AS238 SEA → KOA 225 72.8%
AS200 SEA → KOA 214 77.1%
AS259 KOA → SEA 214 88.6%
AS204 SEA → KOA 208 73.1%
AS807 SEA → KOA 192 77.5%
AS813 SEA → KOA 176 81.3%
AS812 KOA → SEA 170 87.5%
AS822 KOA → SEA 170 92.6%
AS218 KOA → SEA 114 81.4%
AS1423 KOA → SEA 60 79.3%
AS152 SEA → KOA 58 75.9%
AS513 KOA → SEA 52 100.0%
AS153 KOA → SEA 42 87.5%
AS375 SEA → KOA 42 68.3%
AS461 KOA → SEA 41 86.1%
AS110 SEA → KOA 39 82.9%
DL340 KOA → SEA 35 41.9%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 241 −0.4% 5 83.0%
June 2026 239 +1.3% 1 83.3%
May 2026 224 −9.7% 0 84.4%
April 2026 221 −7.9% 1 91.9%
March 2026 242 −1.6% 6 76.0%
February 2026 224 +1.4% 2 74.6%
January 2026 248 +2.9% 0 78.6%
December 2025 236 +10.3% 10 77.5%
November 2025 226 +15.9% 9 88.5%
October 2025 236 +47.5% 8 83.5%
September 2025 221 1 87.3%
August 2025 237 5 81.4%
July 2025 242 4 75.6%
June 2025 236 4 76.7%
May 2025 248 0 84.3%
April 2025 240 0 83.8%
March 2025 246 2 85.0%
February 2025 221 1 83.3%
January 2025 241 6 80.1%
December 2024 214 2 76.2%
November 2024 195 0 87.7%
October 2024 160 0 86.9%

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