JetSetAuthority

Route · Asia

ICN Seoul ⇄ SIN Singapore

Incheon International Airport (South Korea) and Singapore Changi Airport (Singapore): great-circle distance, estimated scheduled flight time each way, time difference and jet lag.

Distance4,627 km2,875 mi2,499 nautical miles
ICN → SIN6 h 25 minestimated block time
SIN → ICN6 h 10 minestimated block time
Clock change−1 hSingapore vs Seoul, today
Great-circle route from Seoul (ICN) to Singapore (SIN)ICNSeoulSINSingapore
The shortest path over the Earth’s surface (great circle), drawn on a Natural Earth projection. Real flight paths bend around weather, winds and closed airspace.

Flight time each way

ICN → SIN

6 h 25 min

Estimated gate-to-gate scheduled time. Initial heading 215° (SW).

Leave Seoul Sat 7 Nov, 10:00 local → arrive Singapore Sat 7 Nov, 15:25 local.

SIN → ICN

6 h 10 min

Estimated gate-to-gate scheduled time. Initial heading 27° (NNE).

Leave Singapore Sat 7 Nov, 10:00 local → arrive Seoul Sat 7 Nov, 17:10 local.

SIN-bound flights are the slower direction by about 15 minutes in our estimate: the route runs partly east–west through latitudes where the prevailing westerly winds at cruise height are strong, so heading east rides a tailwind and heading west fights a headwind. How we estimate it.

Distance

Great-circle distance4,627 km · 2,875 mi · 2,499 nmi
Initial heading215° (SW) from ICN; 27° (NNE) from SIN
Farthest from the equator37.5°N
Crossesneither the equator nor the 180th meridian
Share of the longest possible trip23% of the 20,015 km to the far side of the Earth

Time zones and jet lag

ICNAsia/Seoul — UTC+9 now; UTC+9 all year (no daylight saving time)
SINAsia/Singapore — UTC+8 now; UTC+8 all year (no daylight saving time)
DifferenceSingapore is 1 hour behind Seoul today.

Jet lag, flying ICN → SIN. Your body clock has to move 1 hour later, like a westward trip. A shift this small rarely causes much jet lag; most people feel normal within a day or so. Flying the other way, the shift is reversed.

General information, not medical advice.

The two airports

ICN Incheon International AirportSeoul, South Korea · longest runway 13,123 ft4,000 m SIN Singapore Changi AirportSingapore, Singapore · longest runway 13,123 ft4,000 m

More routes from ICN and SIN

ICNKIX Seoul – Osaka 860 km535 mi · 1 h 55 min ICNHKG Seoul – Hong Kong 2,069 km1,286 mi · 3 h 30 min SYDICN Sydney – Seoul 8,343 km5,184 mi · 10 h 40 min LHRICN London – Seoul 8,861 km5,506 mi · 10 h 40 min ORDICN Chicago – Seoul 10,519 km6,536 mi · 13 h 30 min ATLICN Atlanta – Seoul 11,487 km7,138 mi · 14 h 40 min SINKUL Singapore – Kuala Lumpur 297 km185 mi · 1 h 25 min SINDPS Singapore – Bali (Denpasar) 1,672 km1,039 mi · 2 h 55 min SINBOM Singapore – Mumbai 3,922 km2,437 mi · 5 h 35 min ISTSIN Istanbul – Singapore 8,681 km5,394 mi · 10 h 25 min LHRSIN London – Singapore 10,883 km6,762 mi · 12 h 40 min SINJFK Singapore – New York 15,341 km9,532 mi · 18 h 30 min

Routes of a similar length

SYDDPS Sydney – Bali (Denpasar) 4,622 km2,872 mi · 6 h 35 min ISTDEL Istanbul – Delhi 4,567 km2,838 mi · 5 h 45 min BNEDPS Brisbane – Bali (Denpasar) 4,488 km2,789 mi · 6 h 20 min HNLANC Honolulu – Anchorage 4,475 km2,781 mi · 6 h 05 min

Need a different pair? The flight-time calculator works for any two of 3,245 airports. Not covered: which airlines fly this route, schedules, fares and live status — that data is proprietary and we don’t guess it.

Photos on airport pages are credited there. Estimates are rounded to 5 minutes; typical error about 13 minutes (validation).