Distance Between Cities

The world's longest commercial flight connects New York (JFK) to Singapore, covering approximately 15,350 kilometers in 18 to 19 hours. Other ultra-long-haul routes include Auckland to Doha and Perth to London. These flights use specially configured aircraft with extra fuel capacity and reduced passenger loads.

The driving distance between two cities is typically 25 to 40 percent longer than the straight-line Haversine distance. Our calculator multiplies the straight-line distance by 1.35 as an approximation. Actual driving distance depends on road networks, geographic barriers like mountains and bodies of water, and border crossings.

Plan a multi-city road trip two to three months ahead for popular routes during peak seasons. This allows time to book accommodations, secure rental cars at reasonable rates, and research driving regulations for each country on your route. For off-season travel, one month of planning is usually sufficient.