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

Return flights

25 Apr - 10 May	Aegean Airlines
25 Apr - 09 May	Aegean Airlines
11 Apr - 05 May	Air Serbia
10 Apr - 30 Apr	Air Serbia
07 Apr - 05 May	Air Serbia
11 Apr - 27 Apr	Air Serbia
11 Apr - 04 May	Air Serbia
09 Apr - 23 Apr	Ryanair
09 Apr - 20 Apr	Pegasus Airlines
16 Apr - 30 Apr	Ryanair
19 Apr - 30 Apr	Ryanair
15 Apr - 06 May	Ryanair
04 Apr - 18 Apr	Air Serbia
25 Apr - 04 May	Aegean Airlines
19 Apr - 03 May	Air Serbia
22 Apr - 01 May	Ryanair
30 Apr - 10 May	Pegasus Airlines
10 Apr - 18 Apr	Lufthansa
10 Apr - 19 Apr	Lufthansa
24 Apr - 26 Apr	Ryanair

Also check the deals for one-way flights from Zagreb to Bangkok 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 Zagreb to Bangkok in April from 534€

Return flights