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

Return flights

05 Aug - 04 Sep	Spirit Airlines
26 Aug - 17 Sep	Icelandair
17 Aug - 02 Sep	jetBlue
27 Aug - 08 Sep	Icelandair
26 Aug - 02 Sep	Spirit Airlines
17 Aug - 26 Aug	Spirit Airlines
21 Aug - 02 Sep	Icelandair
19 Aug - 26 Aug	TAP
25 Aug - 03 Sep	Spirit Airlines
27 Aug - 14 Sep	Icelandair
11 Aug - 26 Aug	Icelandair
28 Aug - 08 Sep	Icelandair
27 Aug - 19 Sep	TAP
13 Aug - 27 Aug	Icelandair
06 Aug - 27 Aug	Spirit Airlines
18 Aug - 26 Aug	Spirit Airlines
14 Aug - 21 Aug	Air Canada
13 Aug - 21 Aug	Air Canada
11 Aug - 21 Aug	Icelandair
13 Aug - 20 Aug	Air Canada

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 $469

Return flights