AirHint found the following cheapest return flights from Boston (BOS) to Athens (ATH) in August 2025 (see full year).

Return flights

26 Aug - 17 Sep	Brussels Airlines
18 Aug - 26 Aug	Iberia
05 Aug - 04 Sep	Iberia
24 Aug - 20 Sep	Iberia For Level
27 Aug - 03 Sep	Turkish Airlines
11 Aug - 03 Sep	Iberia
11 Aug - 20 Aug	Air Canada
22 Aug - 05 Sep	Spirit Airlines
19 Aug - 26 Aug	Iberia
17 Aug - 29 Aug	Aer Lingus
12 Aug - 02 Sep	Iberia
05 Aug - 26 Aug	Iberia
13 Aug - 26 Aug	Iberia
29 Aug - 05 Sep	Turkish Airlines
25 Aug - 08 Sep	Turkish Airlines
27 Aug - 30 Aug	Scandinavian Airlines
11 Aug - 15 Aug	British Airways
27 Aug - 13 Sep	Scandinavian Airlines
17 Aug - 26 Aug	Iberia
13 Aug - 27 Aug	Iberia

Also check the deals for one-way flights from Boston to Athens 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 Boston to Athens in August from 496€

Return flights