AirHint found the following cheapest return flights from Cardiff (CWL) to Amsterdam (AMS) in August 2025 (see full year).

Return flights

26 Aug - 10 Sep	Ryanair
30 Aug - 03 Sep	Ryanair
31 Aug - 03 Sep	Ryanair
31 Aug - 02 Sep	Ryanair
26 Aug - 11 Sep	Ryanair
31 Aug - 05 Sep	Ryanair
30 Aug - 05 Sep	Ryanair
30 Aug - 02 Sep	Ryanair
26 Aug - 29 Aug	Ryanair
29 Aug - 03 Sep	KLM
26 Aug - 02 Sep	Ryanair
28 Aug - 29 Aug	KLM
26 Aug - 27 Aug	Ryanair
25 Aug - 29 Aug	TUI
26 Aug - 30 Aug	Ryanair
27 Aug - 29 Aug	KLM
28 Aug - 31 Aug	KLM	direct
29 Aug - 29 Aug	TUI
29 Aug - 30 Aug	KLM	direct
25 Aug - 27 Aug	TUI

Also check the deals for one-way flights from Cardiff to Amsterdam 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 Amsterdam

Cheap car rent in Amsterdam

Cheapest return flights from Cardiff to Amsterdam in August from $268

Return flights