Asiana Lifts Seoul-Seattle To Daily In December 2026

Asiana Airlines is putting more capacity back into one of its longest-running North American markets. According to schedule filings published on 25 August 2026, the Star Alliance carrier will once again operate its Seoul Incheon – Seattle route at a daily frequency during the Northern winter 2026/27 season, with the increase from five weekly flights to seven weekly taking effect from 19 December 2026.

The Boeing 777-200ER continues to operate the service. Asiana’s filed timetable shows OZ272 departing Incheon at 21:00 and arriving in Seattle at 13:55 the same day, with the return OZ271 leaving Seattle at 00:10 and touching down at Incheon at 05:20 the following morning. Both legs are scheduled daily once the increase begins.

A seasonal pattern, restored again

The wording of the filing — that the carrier “once again” schedules a service increase on the route — points to a familiar rhythm rather than a permanent step change. Asiana has spent recent seasons flexing Seattle between five and seven weekly departures depending on demand, and the December date lines up neatly with the peak end-of-year travel period, when transpacific leisure and visiting-friends-and-relatives traffic typically surges alongside year-end corporate travel.

Timing matters on this particular pairing. The late-evening departure out of Incheon and the early-afternoon arrival into Seattle give westbound passengers a full connecting afternoon in the Pacific Northwest, while the after-midnight eastbound departure is designed to feed Asiana’s morning bank at Incheon — the hub wave that pushes onward into Southeast Asia, Japan and mainland China. Moving from five to seven weekly flights removes the two days a week when that connecting proposition simply is not available.

Why the 777-200ER still fits

The 777-200ER is a large twin-aisle widebody that Asiana has long used on medium-length transpacific sectors. Seoul to Seattle sits comfortably inside the type’s capability, and the aircraft’s cabin size gives the airline a useful amount of cargo capacity in the belly — a meaningful consideration on a Korea–US West Coast trunk route where freight demand can be as important to the economics as passenger loads.

Keeping the 777 on the route rather than downgauging also signals that Asiana expects the additional two weekly departures to fill. A frequency increase paired with a smaller aircraft would suggest an airline chasing schedule convenience at the expense of seats; holding the widebody steady while adding days means total winter capacity on the sector rises in step with frequency.

Context for the wider network

The move comes as Asiana’s network continues to be shaped by its integration into the Korean Air group, a process that has already produced schedule and equipment changes across several long-haul markets. Seattle, however, is a route where the carrier has maintained a consistent presence, and a return to daily flying suggests it remains a market the airline wants to defend at full frequency through the peak.

Schedules filed this far ahead of the season are subject to change, and airlines routinely adjust frequencies and timings as booking curves develop. For now, though, travellers planning a December or January trip between Seoul and Seattle will find an Asiana departure available every day of the week from 19 December.

Sources: AeroRoutes. Featured image: AI-generated by AviationShop. By Elena Vargas.