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Seattle (SEA) route changes

Seattle–Tacoma International Airport, United States. 1 change since 18 Sep 2026: 1 frequency or upgauge.

voyarcairport coordinates, great circles
Seattle (SEA) route changesFrequency or upgauge
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Airlines: Korean Air

FrequencyKorean Air

Seoul to Seattle adds two flights a week under Korean Air

ICN-SEA8,394 km787from 17 Dec 202614 weekly

The second Korean Air route to the United States flown under KE codes alone

Korean Air will fly Seoul Incheon to Seattle fourteen times a week from 17 December 2026, up from twelve. Asiana’s OZ272/271 becomes Korean Air KE047/048 from 12 October and keeps running past the merger date, alongside KE041 and KE042. Boeing 787s operate all four daily flights. Asiana’s remaining OZ flight numbers move to KE codes through November and early December.

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Route data from airline releases and schedule filings, rewritten and cited.
Weeks cut in Sydney, Australia time.