Delta Air LinesDL100% on time
live
Direct flights from Atlanta (ATL) to Seoul (ICN): 14 nonstop departures observed each week across 2 airlines. 90% of the last 21 operated flights arrived within 15 minutes of schedule. The median arrival is 23 minutes early. No cancellations were recorded across the 21 tracked flights. The nonstop covers 11,488 km, an estimated 15 hours 14 minutes in the air. Measured by Pro Flight Search from live flight boards at Atlanta and Seoul. Updated 9 September 2026 at 04:23 UTC.
ATL
Atlanta
smooth · +11
ICN
Seoul
smooth · +0
11,488 km · ~15h 14m est.
Runs reliable · 2 airlines · 14x weekly · nonstop
90% on time
of the last 21 operated ATL → ICN flights arrived within 15 minutes
Median arrival delay is −23 min. 0 of 21 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−23 minacross the last 21 operated legs
Flight time~15h 14mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 21
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Delta Air LinesKorean Air
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 ATL: 25% odds of a 15+ minute delay and around +-1 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 Atlanta to Seoul route actually runs
Pro Flight Search records official board updates for nonstop ATL 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 — Atlanta (ATL) to Seoul (ICN) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ATL-ICN
ATL to ICN questions
Is ATL–ICN running on time right now?
Smooth skies ahead. The departure side at ATL is the weaker end, route health score 92/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ATL to ICN?
Great-circle distance is 11,488 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 841–1015 min gate-to-gate on this route.
How often does ATL–ICN fly?
2 carriers operate this route, around 28 flights a week between them. Compare carrier days and times in the airline list above.
What does the route health score measure?
A blend of departure-side delay at ATL 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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