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

Return flights

24 Jan - 31 Jan	Etihad Airways
23 Jan - 08 Feb	Etihad Airways
22 Jan - 22 Jan	Air India
22 Jan - 30 Jan	Air India
29 Jan - 08 Feb	Air India
22 Jan - 08 Feb	Air India
18 Jan - 25 Jan	Etihad Airways
21 Jan - 10 Feb	IndiGo
23 Jan - 15 Feb	Etihad Airways
22 Jan - 31 Jan	Air India
16 Jan - 24 Jan	Air India
14 Jan - 28 Jan	Emirates
14 Jan - 24 Jan	Air India
15 Jan - 25 Jan	Emirates
12 Jan - 13 Jan	Air India
10 Jan - 10 Feb	Air India
31 Jan - 08 Feb	Qatar Airways

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 $614

Return flights