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

Return flights

19 Apr - 24 Apr	British Airways	direct
19 Apr - 26 Apr	British Airways	direct
10 Apr - 18 Apr	Croatia Airlines	direct
24 Apr - 01 May	British Airways	direct
02 Apr - 05 Apr	Austrian Airlines
09 Apr - 13 Apr	Austrian Airlines
07 Apr - 13 Apr	Austrian Airlines
03 Apr - 11 Apr	Austrian Airlines
03 Apr - 05 Apr	Austrian Airlines
16 Apr - 19 Apr	Austrian Airlines
02 Apr - 06 Apr	LOT

Also check the deals for one-way flights from London to Zagreb in April.

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 April from $165

Return flights