Seoul, South Korea → Busan, South Korea · ✈ 54 min · 🚗 5h 17min
175 nautical miles · Time difference: +1h ahead · Direction: southeast
The distance from Seoul to Busan is 325 km (202 miles). The fastest way to travel is by high-speed train. A high-speed train covers the distance in approximately 1h 10min.
The straight-line distance from Seoul, South Korea to Busan, South Korea is approximately 325 kilometers (202 miles or 175 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Busan is located southeast of Seoul. Seoul is in Asia, in the Capital Area region of South Korea, while Busan is in Asia, in Southeast, South Korea. Both cities are in Asia.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 325 km | ~54 min | Quick but may not save time with airport procedures |
| 🚗 Drive | ~423 km | ~5h 17min | Convenient and flexible |
| 🚄 High-Speed Train | ~374 km | ~1h 10min | Often faster than flying (no airport time) |
| 🚂 Regular Train | ~390 km | ~3h 15min | Budget-friendly option |
Our recommendation: high-speed train is typically the best way to travel from Seoul to Busan. At this distance, driving gives you the most flexibility and avoids airport overhead.
Based on an estimated road distance of 423 km, fuel costs for driving from Seoul to Busan are approximately $34–$63 USD (at $0.08–$0.15 per km, depending on vehicle efficiency and local fuel prices). Additional costs may include tolls, parking, and accommodation for longer trips.
Seoul sits at 37.5665°N, 126.9780°E, while Busan is located at 35.1796°N, 129.0756°E. The initial compass bearing from Seoul to Busan is 144° (SE), so a great-circle flight path leaves Seoul heading roughly SE. Because the Earth is curved, the actual heading shifts gradually along the route — pilots and navigation systems update it continuously instead of holding a single fixed compass bearing.
The latitude difference is 2.39° and the longitude difference is 2.10°. Each degree of latitude represents about 111 km, which is one reason cross-latitude routes feel longer even when the map looks similar to east–west journeys.
The geographic midpoint between Seoul and Busan is approximately 36.3776°N, 128.0429°E. This is the great-circle halfway position — the spot where you would be exactly 163 km from each city. For road trips, a stop near this latitude/longitude makes for a natural overnight or lunch break.
Busan is roughly 1 hour ahead of Seoul. When it is 09:00 in Seoul, it is approximately 10:00 in Busan. Daylight saving time can shift the offset by an hour during certain months, so confirm the exact difference for your specific travel dates.
Seoul is a major city in South Korea with a population of approximately 9,776,000. Located in the Capital Area region, it is an important hub in Asia. As one of the largest cities in South Korea, Seoul is a major international gateway with extensive air connections and multiple airports.
→ See all distances from Seoul
Busan is a notable city in South Korea with a population of approximately 3,429,000. Situated in the Southeast region, it serves as a key destination in Asia. Busan offers solid transport connections and a variety of arrival options as a major city in South Korea.
325 km is a medium-distance route, similar to traveling across a mid-sized European country. A flight covers this distance quickly, but driving or rail travel remains feasible for those who prefer ground transport. For reference, New York to Chicago is about 1,150 km.
The distance from Seoul to Busan (325 km) is roughly equivalent to 8 marathon distances laid end to end.
Combined, Seoul and Busan have a population of over 13,205,000 people, making this a major urban corridor.
At just 325 km within South Korea, the Seoul–Busan corridor is well-suited for a day trip or weekend getaway. Consider driving for flexibility, or check regional rail connections for a hassle-free journey.
The straight-line distance from Seoul to Busan is approximately 325 kilometers (202 miles, 175 nautical miles).
A direct flight takes approximately 54 min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 5h 17min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Busan is approximately +1h ahead compared to Seoul.
The estimated road distance is approximately 423 km, which is about 30% longer than the 325 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 21, 2026.