--- title: "Seattle (SEA) to Seoul (ICN) flights: who flies it" description: "Delta Air Lines, Alaska Airlines and 2 more airlines fly nonstop from SEA to ICN, about 30 flights a week. Upgrade and award space by date on 2LNR, next 14 days free." canonical: "https://2lnr.com/routes/sea-icn" url: "https://2lnr.com/routes/sea-icn.md" date_modified: "2026-10-18T05:10:47Z" --- # Seattle to Seoul (SEA-ICN): nonstop upgrade & award space Korean Air, Delta Air Lines, Alaska Airlines, and Asiana Airlines fly nonstop between Seattle (SEA) and Seoul (ICN), roughly 30 times a week. The timetable below shows the nonstop scheduled at 11h 50m to 12h 20m for the 5,204 miles. 2LNR checks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines flights on this route, so you can see which departures have space before you book. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 24, 2026. See SEA to ICN on the interactive map [Get started free](https://2lnr.com/login) 30 Flights a week, 4-week average 11h 50m to 12h 20m Scheduled flight time 5,204 mi Nonstop distance Free To get started ## Seattle to Seoul flight schedule Scheduled nonstop departures for SEA to ICN starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Seattle (SEA) to Seoul (ICN) | Date | Flight | Airline | Departs SEA | Arrives ICN | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Fri, Oct 23 | KE 48 | Korean Air | 00:10 | 04:30 | 12h 20m | [Boeing 787-9 Dreamliner](https://2lnr.com/seatmaps/ke/787-9.md) | | Fri, Oct 23 | OZ 271 | Asiana Airlines | 00:10 | 04:30 | 12h 20m | [Boeing 777-200LR](https://2lnr.com/seatmaps/oz/777-200lr.md) | | Fri, Oct 23 | KE 42 | Korean Air | 12:50 | 16:40 | 11h 50m | [Boeing 787-10 Dreamliner](https://2lnr.com/seatmaps/ke/787-10.md) | | Fri, Oct 23 | DL 197 | Delta Air Lines | 13:00 | 16:50 | 11h 50m | [Airbus A350-900](https://2lnr.com/seatmaps/dl/a350-900.md) | | Fri, Oct 23 | AS 119 | Alaska Airlines, Inc. | 13:35 | 17:30 | 11h 55m | Boeing 787-9 Dreamliner | | Sat, Oct 24 | KE 48 | Korean Air | 00:10 | 04:30 | 12h 20m | Boeing 787-9 Dreamliner | | Sat, Oct 24 | OZ 271 | Asiana Airlines | 00:10 | 04:30 | 12h 20m | Boeing 777-200LR | | Sat, Oct 24 | DL 197 | Delta Air Lines | 11:35 | 15:50 | 12h 15m | Airbus A350-900 | | Sat, Oct 24 | KE 42 | Korean Air | 12:50 | 16:40 | 11h 50m | Boeing 787-10 Dreamliner | | Sat, Oct 24 | AS 119 | Alaska Airlines, Inc. | 13:40 | 17:35 | 11h 55m | Boeing 787-9 Dreamliner | | Sun, Oct 25 | KE 42 | Korean Air | 12:00 | 15:55 | 11h 55m | Boeing 787-10 Dreamliner | | Sun, Oct 25 | DL 197 | Delta Air Lines | 13:30 | 17:45 | 12h 15m | Airbus A350-900 | | Sun, Oct 25 | AS 119 | Alaska Airlines, Inc. | 13:40 | 17:35 | 11h 55m | Boeing 787-9 Dreamliner | | Mon, Oct 26 | KE 48 | Korean Air | 00:10 | 04:20 | 12h 10m | Boeing 787-9 Dreamliner | | Mon, Oct 26 | OZ 271 | Asiana Airlines | 00:10 | 04:20 | 12h 10m | Boeing 777-200LR | | Mon, Oct 26 | KE 42 | Korean Air | 12:00 | 15:55 | 11h 55m | Boeing 787-10 Dreamliner | | Mon, Oct 26 | DL 197 | Delta Air Lines | 13:30 | 17:45 | 12h 15m | Airbus A350-900 | | Mon, Oct 26 | AS 119 | Alaska Airlines, Inc. | 13:35 | 17:30 | 11h 55m | Boeing 787-9 Dreamliner | | Tue, Oct 27 | KE 48 | Korean Air | 00:10 | 04:20 | 12h 10m | Boeing 787-9 Dreamliner | | Tue, Oct 27 | OZ 271 | Asiana Airlines | 00:10 | 04:20 | 12h 10m | Boeing 777-200LR | | Tue, Oct 27 | KE 42 | Korean Air | 12:00 | 15:55 | 11h 55m | Boeing 787-10 Dreamliner | | Tue, Oct 27 | DL 197 | Delta Air Lines | 13:30 | 17:45 | 12h 15m | Airbus A350-900 | | Wed, Oct 28 | KE 48 | Korean Air | 00:10 | 04:20 | 12h 10m | Boeing 787-9 Dreamliner | | Wed, Oct 28 | OZ 271 | Asiana Airlines | 00:10 | 04:20 | 12h 10m | Boeing 777-200LR | | Wed, Oct 28 | KE 42 | Korean Air | 12:00 | 15:55 | 11h 55m | Boeing 787-10 Dreamliner | | Wed, Oct 28 | DL 197 | Delta Air Lines | 13:30 | 17:45 | 12h 15m | Airbus A350-900 | | Wed, Oct 28 | AS 119 | Alaska Airlines, Inc. | 13:40 | 17:35 | 11h 55m | Boeing 787-9 Dreamliner | | Thu, Oct 29 | KE 42 | Korean Air | 12:00 | 15:55 | 11h 55m | Boeing 787-10 Dreamliner | | Thu, Oct 29 | DL 197 | Delta Air Lines | 13:30 | 17:45 | 12h 15m | Airbus A350-900 | | Thu, Oct 29 | AS 119 | Alaska Airlines, Inc. | 13:40 | 17:35 | 11h 55m | Boeing 787-9 Dreamliner | Showing all 30 scheduled SEA to ICN departures across 7 days with service, starting October 23, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every SEA to ICN date on the interactive map ## Aircraft on the Seattle to Seoul nonstop In the schedule table on this page, Korean Air flies the [Boeing 787-10 Dreamliner](https://2lnr.com/seatmaps/ke/787-10.md) and the [Boeing 787-9 Dreamliner](https://2lnr.com/seatmaps/ke/787-9.md). Delta Air Lines flies the [Airbus A350-900](https://2lnr.com/seatmaps/dl/a350-900.md). Alaska Airlines flies the Boeing 787-9 Dreamliner. Asiana Airlines flies the [Boeing 777-200LR](https://2lnr.com/seatmaps/oz/777-200lr.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## Confirmed upgrade & award space on SEA to ICN departures 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines, segment by segment and date by date. Open the calendar for Seattle to Seoul to see which departures have space, the next 14 days free on every product and the full horizon on Pro. In the 7 days to October 19, 2026, 2LNR checked award space on Seattle to Seoul departures from October 19 to November 1. Delta Air Lines had space open on 14 of 14 dates checked and Alaska Airlines on 0 of 10. ### See real availability Confirmed upgrade or award seats by date on the SEA to ICN departures 2LNR tracks, checked against live inventory so you know what's open before you book. ### Set an alert Premium inventory turns over fast. Watch this route on Pro and 2LNR notifies you when space appears on a date you're tracking. ### Plan on the map See SEA to ICN on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Seattle to Seoul nonstop Carriers operating SEA to ICN nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show confirmed upgrade or award space by date. - [Korean Air (KE) route map](https://2lnr.com/routes/airlines/ke.md)\ [The aircraft KE flies](https://2lnr.com/seatmaps/ke.md) - [Delta Air Lines (DL) route map](https://2lnr.com/routes/airlines/dl.md)\ [The aircraft DL flies](https://2lnr.com/seatmaps/dl.md) - [Alaska Airlines (AS) route map](https://2lnr.com/routes/airlines/as.md)\ [The aircraft AS flies](https://2lnr.com/seatmaps/as.md) - [Asiana Airlines (OZ) route map](https://2lnr.com/routes/airlines/oz.md)\ [The aircraft OZ flies](https://2lnr.com/seatmaps/oz.md) See SEA to ICN on the interactive map → ## Frequently asked questions about SEA to ICN **How long is the flight from Seattle (SEA) to Seoul (ICN)?** Scheduled flight times from Seattle (SEA) to Seoul (ICN) run from 11h 50m to 12h 20m across the departures in the schedule table on this page. The nonstop covers about 5,204 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from SEA to ICN?** Korean Air, Delta Air Lines, Alaska Airlines, and Asiana Airlines fly SEA to ICN nonstop. 2LNR tracks confirmed upgrade and award space on Delta Air Lines and Alaska Airlines. **How many flights a week are there from SEA to ICN?** About 30 nonstop flights a week run between Seattle (SEA) and Seoul (ICN) in the current schedule, operated by Korean Air, Delta Air Lines, Alaska Airlines, and Asiana Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from SEA to ICN depart?** Scheduled SEA to ICN nonstops in the next 7 days with service leave between 00:10 and 13:40, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate SEA to ICN nonstop?** In the schedule table on this page, SEA to ICN nonstops fly as KE 42 and KE 48 on Korean Air; DL 197 on Delta Air Lines; AS 119 on Alaska Airlines; and OZ 271 on Asiana Airlines. The table lists each departure by date with its times and aircraft. **How do I check upgrade or award availability on SEA to ICN?** Open the SEA to ICN route on the interactive map or the matrix to see confirmed upgrade and award space by date on Delta Air Lines and Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens. Flying the other way? See [ICN to SEA upgrade and award space](https://2lnr.com/routes/icn-sea.md). Award seats rather than schedules? See [Delta Air Lines award availability](https://2lnr.com/awards/dl.md) or [Alaska Airlines award availability](https://2lnr.com/awards/as.md). Looking beyond this route? See [every route from Seattle (SEA)](https://2lnr.com/routes/sea.md), or [every route from Seoul (ICN)](https://2lnr.com/routes/icn.md). Nonstops to Seoul (ICN) from other airports within 150 miles of Seattle (SEA): - [Vancouver (YVR) to Seoul (ICN)](https://2lnr.com/routes/yvr-icn.md), 127 miles from SEA Distances are great-circle between the airports, not driving distance. - [How Delta upgrades clear](https://2lnr.com/about/dl/upgrades.md) - [How to read award availability by date](https://2lnr.com/guides/award-availability.md) ## Never miss SEA to ICN upgrade or award space See what's open by date on this route, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)