Direct flights from Salt Lake City (SLC) to Seoul (ICN): 7 nonstop departures observed each week across 1 airline. 88% of the last 8 operated flights arrived within 15 minutes of schedule. The median arrival is 15 minutes early. No cancellations were recorded across the 8 tracked flights. The nonstop covers 9,481 km, an estimated 12 hours 39 minutes in the air. Measured by Pro Flight Search from live flight boards at Salt Lake City and Seoul. Updated 25 October 2026 at 21:48 UTC.
Left SLC at 12:12, 22 min after its 11:50 slot.
Landing estimate from 58,723 tracked flights of 8 hours or longer that left 15 to 29 min late. The ICN board has not posted a landing time yet. How planes make up time
Track DL173 →Checked SLC board 15:48 · ICN board 06:36
of the last 8 operated SLC → ICN flights arrived within 15 minutes
Median arrival delay is −15 min. 0 of 8 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Flights DL173 10:55 daily
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
next sweep in 120s
Pro Flight Search records official board updates for nonstop SLC to ICN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — Salt Lake City (SLC) to Seoul (ICN) route reliability, measured from operated flights on official airport boards.
https://proflightsearch.com/search-flights/SLC-ICN
Smooth skies ahead. The departure side at SLC is the weaker end, route health score 95/100. The airports section above carries the live status and delay window at both ends.
Great-circle distance is 9,481 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 699–843 min gate-to-gate on this route.
Delta Air Lines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
A blend of departure-side delay at SLC and arrival-side delay at ICN, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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