Tokyo to Seongnam-si flights
Seongnam-si lies 1,137 km (707 mi) west of Tokyo, in the same time zone. What the numbers say about getting there, and where to book.
A nonstop flight would take about 2 h 12 min gate to gate, based on the distance and typical cruise speed with taxi and climb allowed for; connecting itineraries add the layover on top.
Open Seongnam-si in Google Maps
| Tokyo | Seongnam-si | |
|---|---|---|
| Country | Japan | South Korea |
| Population | 9.7 million | 914,832 |
| Elevation | 44 m (144 ft) | 80 m (262 ft) |
| Time now | UTC+9 (Asia/Tokyo) | UTC+9 (Asia/Seoul) |
| Nearest large airport | HND, 18 km out | GMP, 33 km out |
What changes when you arrive in Seongnam-si
Crossing from Japan into South Korea: money changes from the Yen to the Won (KRW); traffic switches to the right; sockets are Euro, Schuko; the dialling code becomes +82; the emergency number is http://www.wikidata.org/entity/Q1061257 / http://www.wikidata.org/entity/Q25648804.
Airports at each end
Leaving Tokyo
Tokyo is served by 3 airports with scheduled flights within 100 km. The closest large one is Tokyo Haneda International Airport (HND), 18 km (11 mi) from the centre, whose 11,024-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Narita International Airport (NRT, 64 km), Ibaraki Airport (IBR, 85 km).
Arriving in Seongnam-si
Seongnam-si is served by 4 airports with scheduled flights within 100 km. The closest large one is Seoul Gimpo International Airport (GMP), 33 km (21 mi) from the centre, whose 11,811-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Incheon International Airport (ICN, 61 km), Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ, 87 km), Wonju Airport / Hoengseong Air Base (K-38/K-46) (WJU, 73 km).
| Airport | Code | From centre | Longest runway | Elevation |
|---|---|---|---|---|
| Seoul Gimpo International Airport | GMP | 33 km (21 mi) | 11,811 ft | 59 ft |
| Incheon International Airport | ICN | 61 km (38 mi) | 13,123 ft | 23 ft |
| Cheongju International Airport/Cheongju Air Base (K-59/G-513) | CJJ | 87 km (54 mi) | 9,000 ft | 191 ft |
| Wonju Airport / Hoengseong Air Base (K-38/K-46) (regional) | WJU | 73 km (45 mi) | 9,000 ft | 329 ft |
Book a flight to Seongnam-si
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Common questions
How far is Seongnam-si from Tokyo?
1,137 km (707 mi) in a straight line, west of Tokyo.
How long does it take to get from Tokyo to Seongnam-si by air?
About 2 h 12 min, estimated from distance and typical speeds for a nonstop flight. Timetables and traffic decide the real figure.
Is there a time difference between Tokyo and Seongnam-si?
No, both are on the same offset at the moment.
Which airports are used for Tokyo to Seongnam-si flights?
Typically Tokyo Haneda International Airport (HND) to Seoul Gimpo International Airport (GMP); Seongnam-si also has ICN, CJJ, WJU.
What currency do I need in Seongnam-si?
The Won (KRW).
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 13 September 2026. Hotel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.