Mumbai (BOM) to Kolkata (CCU): 1,035 miles (1,666 km) great-circle, about 2h 35m nonstop by our estimate. Cheapest fare observed: $139 round-trip on SpiceJet, nonstop, departing May 3, 2026.
$139 round-trip, SpiceJet SG940, departing 2026-05-03 at 17:05, returning 2026-05-04. The recorded itinerary left on a Sunday, returning on a Monday 1 night later; the fare was observed 8 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $139, it ranked 5th of the 30 round-trip fares we recorded from BOM (median $407). That is 13.4 cents per great-circle mile (round-trip price over one-way distance), below the BOM median of 22.3 cents across 30 round-trip routes.
Routes from BOM of similar length: Malé (1,030 mi) at $347 and Kathmandu (989 mi) at $347.
SpiceJet had the cheapest fare on 3 of 30 BOM routes. It is the 20th longest of the 30 routes we track from BOM.
Of 7 departure airports with a fare to Kolkata, Mumbai (BOM) ranked 3rd at $139. Lowest: $124 from Delhi (DEL); highest: $861 from Doha (DOH); 4 nonstop. Cheapest-fare airlines (routes): Air India Express (2), Air India (1), Biman Bangladesh Airlines (1), Emirates (1), flydubai (1) and SpiceJet (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Asia/Kolkata, Asia/Kolkata; flight time is our estimate.