AirHint found the following cheapest return flights from Kolkata (CCU) to London (LTN) in January 2026 (see full year).

Return flights

14 Jan - 06 Feb	IndiGo
14 Jan - 01 Feb	Air India
20 Jan - 26 Jan	Air India
31 Jan - 11 Feb	Akasa Air
18 Jan - 02 Feb	IndiGo
14 Jan - 30 Jan	IndiGo
16 Jan - 01 Feb	Air India
14 Jan - 02 Feb	Air India
15 Jan - 02 Feb	IndiGo
16 Jan - 26 Jan	Air India
17 Jan - 01 Feb	IndiGo
15 Jan - 30 Jan	IndiGo
16 Jan - 30 Jan	IndiGo
12 Jan - 30 Jan	IndiGo
16 Jan - 02 Feb	Air India
30 Jan - 11 Feb	IndiGo
07 Jan - 14 Jan	IndiGo
14 Jan - 31 Jan	IndiGo
16 Jan - 31 Jan	IndiGo
13 Jan - 30 Jan	Akasa Air

Also check the deals for one-way flights from Kolkata to London in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Kolkata to London in January from $635

Return flights