Flight Time Estimator

Calculate the great-circle distance and estimated flight time between any two airports worldwide. This tool models theoretical nonstop routing, allowing you to analyze routes even if no airline currently operates direct service between them.

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Estimate Flight Time

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Kolkata (CCU) → San Francisco (SFO)

United States of America flag San Francisco (SFO) – United States of America 1 airline
15 hr 15 mins
7,816 mi · 12,578 km
1
per day
Estimated flight time
15 hr 15 mins
Distance
7,816 Miles · 12,578 Kilometers
6,791.63 Nautical Miles

San Francisco (SFO) → Kolkata (CCU)

India flag Kolkata (CCU) – India 1 airline
15 hr 30 mins
7,816 mi · 12,578 km
2
per day
Estimated flight time
15 hr 30 mins
Distance
7,816 Miles · 12,578 Kilometers
6,791.63 Nautical Miles