Boston, United States → Washington, United States · ✈ 1h 18min · 🚗 10h 18min
342 nautical miles · Time difference: Same timezone · Direction: southwest
The distance from Boston to Washington is 634 km (394 miles). The fastest way to travel is by flight. A direct flight takes approximately 1h 18min.
The straight-line distance from Boston, United States to Washington, United States is approximately 634 kilometers (394 miles or 342 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Washington is located southwest of Boston. Boston is in North America, in the Northeast region of United States, while Washington is in North America, in Northeast, United States. Both cities are in North America.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 634 km | ~1h 18min | Best option for speed |
| 🚗 Drive | ~824 km | ~10h 18min | Feasible with breaks |
| 🚂 Regular Train | ~761 km | ~6h 20min | Scenic but slow |
Our recommendation: flight is typically the best way to travel from Boston to Washington. For 634 km, flying saves significant time and is usually the most practical choice.
Based on an estimated road distance of 824 km, fuel costs for driving from Boston to Washington are approximately $66–$124 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.
Boston sits at 42.3601°N, 71.0589°W, while Washington is located at 38.9072°N, 77.0369°W. The initial compass bearing from Boston to Washington is 235° (SW), so a great-circle flight path leaves Boston heading roughly SW. 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 3.45° and the longitude difference is 5.98°. 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 Boston and Washington is approximately 40.6722°N, 74.1253°W. This is the great-circle halfway position — the spot where you would be exactly 317 km from each city. For road trips, a stop near this latitude/longitude makes for a natural overnight or lunch break.
Boston and Washington 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.
Boston is a major city in United States with a population of approximately 675,647. Located in the Northeast region, it is an important hub in North America. Despite its smaller size, Boston plays an important regional role in United States and attracts visitors year-round.
→ See all distances from Boston
Washington is a notable city in United States with a population of approximately 689,545. Situated in the Northeast region, it serves as a key destination in North America. Washington is a popular destination in the Northeast region of United States, known for its unique character and attractions.
→ See all distances from Washington
634 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.
At 634 km, the Boston-Washington route is about 1.6% of Earth's circumference. A commercial jet covers this distance in about 1h 18min.
See how the Boston to Washington distance compares to similar routes:
The straight-line distance from Boston to Washington is approximately 634 kilometers (394 miles, 342 nautical miles).
A direct flight takes approximately 1h 18min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 10h 18min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Washington is approximately Same timezone compared to Boston.
The estimated road distance is approximately 824 km, which is about 30% longer than the 634 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: May 30, 2026.