AirHint found the following cheapest return flights from Atlanta (ATL) to Brussels (BRU) in August 2025 (see full year).

Return flights

10 Aug - 21 Aug	British Airways
09 Aug - 20 Aug	British Airways
13 Aug - 24 Aug	Spirit Airlines
28 Aug - 10 Sep	Frontier Airlines
22 Aug - 24 Aug	Frontier Airlines
09 Aug - 23 Aug	Frontier Airlines
22 Aug - 31 Aug	Frontier Airlines
28 Aug - 10 Sep	Air France	direct
16 Aug - 27 Aug	Air France	direct
09 Aug - 20 Aug	Air France	direct

Also check the deals for one-way flights from Atlanta to Brussels 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.

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Cheapest return flights from Atlanta to Brussels in August from 461€

Return flights