AirHint found the following cheapest return flights from London (LHR) to Zagreb (ZAG) in August 2025 (see full year).

Return flights

12 Aug - 19 Aug	Lufthansa
19 Aug - 23 Aug	Lufthansa
29 Aug - 11 Sep	KLM
28 Aug - 11 Sep	KLM
12 Aug - 16 Aug	Lufthansa
11 Aug - 15 Aug	Croatia Airlines
31 Aug - 05 Sep	British Airways
29 Aug - 13 Sep	Austrian Airlines
31 Aug - 03 Sep	British Airways
19 Aug - 26 Aug	Lufthansa
20 Aug - 23 Aug	Lufthansa
15 Aug - 19 Aug	Lufthansa
05 Aug - 12 Aug	Lufthansa
15 Aug - 20 Aug	Lufthansa
07 Aug - 12 Aug	Lufthansa
21 Aug - 04 Sep	Lufthansa
28 Aug - 04 Sep	Lufthansa
29 Aug - 13 Sep	British Airways	direct
27 Aug - 07 Sep	Croatia Airlines
25 Aug - 02 Sep	Croatia Airlines

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

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.

Book a cheap hotel in Zagreb

Cheap car rent in Zagreb

Cheapest return flights from London to Zagreb in August from $232

Return flights