AirportMiles

Kailua-Kona (KOA) – Seattle (SEA)

Flights on GoogleSkyscanner
Distance, flight time and the airlines that fly it, from open data.
Distance
4,326 km
2,688 mi · 2,336 nm
Flight time
5 h 45 min / 6 h 11 min
Average gate to gate: KOA → SEA / back
Time difference
2 h / 3 h
January / July
CO2 per passenger
506 kg
One way, economy, incl. RF (300 kg CO2 only)
Passengers / year
408,557
Aug 2025 – Jul 2026 · −4.8%
Flights / week
54
Both directions, average
Seats filled
82%
496,393 seats a year
Airlines nonstop
2
AS, DL

Traffic: U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service), Aug 2025 – Jul 2026. Distance: WGS-84 ellipsoid. CO2: UK DESNZ 2026 factors. Sources

Great circle from KOA to SEAKOASEA
Shortest path over the earth's surface (great circle). Real flights bend around weather, winds and airspace.

The way there

Heading from KOA
37°
Heading from SEA
236°
Halfway point
34.75, -142.01
Great-circle km
4,327 km (sphere, for EU261)
In the air KOA → SEA
5 h 19 min
In the air SEA → KOA
5 h 39 min
Clocks
2 h in January, 3 h in July

The estimate for a route without real times is 5 h 55 min; how it is worked out is on Sources.

Passengers per month, both directions (Aug 2025 – Jul 2026)Busiest: March 2026: 37,438 passengers
020K40KAugSepOctNovDecJanFebMar37.4KAprMayJunJul
Show as a table
Month Passengers
Aug 202534,912
Sep 202526,342
Oct 202532,968
Nov 202531,711
Dec 202535,798
Jan 202637,171
Feb 202634,491
Mar 202637,438
Apr 202633,874
May 202632,976
Jun 202635,734
Jul 202635,142
Flights per month, both directions (Aug 2025 – Jul 2026)Busiest: January 2026: 248 flights
0100200300AugSepOctNovDecJan248FebMarAprMayJunJul
Show as a table
Month Flights
Aug 2025237
Sep 2025221
Oct 2025235
Nov 2025220
Dec 2025236
Jan 2026248
Feb 2026223
Mar 2026242
Apr 2026222
May 2026223
Jun 2026239
Jul 2026242

Airlines flying KOA–SEA nonstop

Airline Flights / week Share of passengers
ASAlaska Airlines40
72%
DLDelta Air Lines14
28%

Both directions, Aug 2025 – Jul 2026. Airlines with at least one flight a month. U.S. DOT, Bureau of Transportation Statistics, T-100 Segment (all carriers, scheduled service). Sources

Aircraft on this route

  • Boeing B737 Max 900 · 1,117 flights
  • Boeing 737-800 · 467 flights
  • Airbus Industrie A321-200n · 420 flights
  • Boeing 737-900ER · 352 flights
  • Boeing 757-200 · 286 flights
  • Boeing B737 Max 800 · 138 flights
  • Boeing 757-300 · 6 flights
  • Boeing 767-300/300ER · 2 flights

Also carried: 436 tonnes of freight and 0 tonnes of mail a year (passenger and cargo flights).

Punctuality

On time
80.7%
Arrived within 15 min of schedule
Average delay
11 min
Late arrivals count, early ones as 0
Cancelled
1.7%
Flights counted
2,843
Aug 2025 – Jul 2026
Airline On time Average delay
ASAlaska Airlines79.5%12 min
DLDelta Air Lines84.4%8 min

Delay minutes by cause: airline 37% · aircraft arriving late 31% · air traffic system 31% · weather 2% · security 0%.

Both directions, Aug 2025 – Jul 2026. BTS Reporting Carrier On-Time Performance (US domestic flights of the larger US airlines). Sources

Delay compensation (EU261 / UK261)

Measured by great-circle distance: 4,327 km.

Neither EU261 nor UK261 covers this route: it neither starts nor ends in the EU, EEA, Switzerland or the UK. Other countries have their own rules (for example Canada's APPR or Brazil's ANAC rules).

Also owed for a cancellation with less than 14 days' notice or denied boarding. Not owed for extraordinary circumstances. On a connection, the distance to the final destination counts. From 23 October 2027 the EU's Regulation 2026/2202 applies; it keeps these amounts (what changes in 2027). Information, not legal advice.

Every airport pair between Kailua-Kona and Seattle

SEABFI
KOA4,3264,331

Kilometres. Linked numbers have a page of their own. All Seattle airports

More routes from KOA

Route Distance Passengers / year
KOA → HNL263 km 1,386,556
KOA → LAX4,030 km 495,547
KOA → SFO3,810 km 380,967
KOA → OGG134 km 280,041
KOA → DEN5,357 km 168,509
KOA → SMF3,919 km 154,883
KOA → PHX4,603 km 131,002
KOA → LAS4,373 km 112,374
KOA → PDX4,195 km 108,651
KOA → SAN4,113 km 103,957

More routes from SEA

Route Distance Passengers / year
SEA → DEN1,648 km 1,819,437
SEA → PHX1,781 km 1,813,338
SEA → LAX1,535 km 1,810,795
SEA → ANC2,331 km 1,694,688
SEA → SFO1,092 km 1,628,228
SEA → ORD2,769 km 1,622,991
SEA → LAS1,394 km 1,596,435
SEA → DFW2,671 km 1,577,921
SEA → SAN1,690 km 1,233,726
SEA → SLC1,108 km 1,106,553

Questions

Kailua-Kona (KOA) and Seattle (SEA) are 4,326 km (2,688 miles, 2,336 nautical miles) apart, measured along the shortest path over the earth's surface.