Delta Air LinesDL100% on time
Flights DL173 11:15 daily
live
Direct flights from Salt Lake City (SLC) to Seoul (ICN): 7 nonstop departures observed each week across 1 airline. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 36 minutes early. No cancellations were recorded across the 7 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 10 September 2026 at 18:24 UTC.
SLC
Salt Lake City
busy · +15
ICN
Seoul
smooth · +0
9,481 km · ~12h 39m est.
Runs reliable · 1 airline · 7x weekly · nonstop
100% on time
of the last 7 operated SLC → ICN flights arrived within 15 minutes
Median arrival delay is −36 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−36 minacross the last 7 operated legs
Flight time~12h 39mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air Lines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SLC: 25% odds of a 15+ minute delay and around +0 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Salt Lake City to Seoul route actually runs
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
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Salt Lake City (SLC) to Seoul (ICN) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SLC-ICN
SLC to ICN questions
Is SLC–ICN running on time right now?
Smooth skies ahead. The departure side at SLC is the weaker end, route health score 90/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SLC to ICN?
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.
How often does SLC–ICN fly?
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.
What does the route health score measure?
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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