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

Return flights

19 Jan - 31 Jan	Croatia Airlines	direct
09 Jan - 12 Jan	Air Serbia
09 Jan - 12 Jan	Croatia Airlines	direct
05 Jan - 12 Jan	LOT
08 Jan - 11 Jan	Austrian Airlines
18 Jan - 22 Jan	Austrian Airlines
07 Jan - 11 Jan	Austrian Airlines
21 Jan - 22 Jan	Croatia Airlines
16 Jan - 18 Jan	Croatia Airlines
30 Jan - 01 Feb	Croatia Airlines
23 Jan - 25 Jan	Austrian Airlines

Also check the deals for one-way flights from London to Zagreb 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 London to Zagreb in January from 141€

Return flights