Buenos Aires, Argentina → Montevideo, Uruguay · ✈ 45 min · 🚗 3h 20min
111 nautical miles · Time difference: Same timezone · Direction: east
The distance from Buenos Aires to Montevideo is 205 km (127 miles). The fastest way to travel is by car. A direct flight takes approximately 45 min.
The straight-line distance from Buenos Aires, Argentina to Montevideo, Uruguay is approximately 205 kilometers (127 miles or 111 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Montevideo is located east of Buenos Aires. Buenos Aires is in South America, in the Buenos Aires region of Argentina, while Montevideo is in South America, in Montevideo, Uruguay. Both cities are in South America.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 205 km | ~45 min | Quick but may not save time with airport procedures |
| 🚗 Drive | ~267 km | ~3h 20min | Convenient and flexible |
| 🚂 Regular Train | ~246 km | ~2h 3min | Budget-friendly option |
Our recommendation: car is typically the best way to travel from Buenos Aires to Montevideo. At this distance, driving gives you the most flexibility and avoids airport overhead.
Based on an estimated road distance of 267 km, fuel costs for driving from Buenos Aires to Montevideo are approximately $21–$40 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.
Buenos Aires sits at 34.6037°S, 58.3816°W, while Montevideo is located at 34.9011°S, 56.1645°W. The initial compass bearing from Buenos Aires to Montevideo is 100° (E), so a great-circle flight path leaves Buenos Aires heading roughly E. 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 0.30° and the longitude difference is 2.22°. 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 Buenos Aires and Montevideo is approximately 34.7574°S, 57.2750°W. This is the great-circle halfway position — the spot where you would be exactly 103 km from each city. For road trips, a stop near this latitude/longitude makes for a natural overnight or lunch break.
Buenos Aires and Montevideo share the same approximate time zone, so meetings, calls, and arrivals don't require any clock adjustment. This makes the route especially convenient for short business trips. Daylight saving time can shift the offset by an hour during certain months, so confirm the exact difference for your specific travel dates.
Buenos Aires is a major city in Argentina with a population of approximately 3,075,646. Located in the Buenos Aires region, it is an important hub in South America. Buenos Aires is a significant metropolitan area in Argentina with good domestic and international transport connections.
→ See all distances from Buenos Aires
Montevideo is a notable city in Uruguay with a population of approximately 1,319,108. Situated in the Montevideo region, it serves as a key destination in South America. Montevideo offers solid transport connections and a variety of arrival options as a major city in Uruguay.
205 km is roughly the distance of a short regional flight or a 3-4 hour drive. For comparison, it's about the distance from London to Paris (344 km). At this range, ground transport often competes with flying when you factor in airport time.
The distance from Buenos Aires to Montevideo (205 km) is roughly equivalent to 5 marathon distances laid end to end.
See how the Buenos Aires to Montevideo distance compares to similar routes:
The straight-line distance from Buenos Aires to Montevideo is approximately 205 kilometers (127 miles, 111 nautical miles).
A direct flight takes approximately 45 min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 3h 20min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Montevideo is approximately Same timezone compared to Buenos Aires.
The estimated road distance is approximately 267 km, which is about 30% longer than the 205 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.