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

Return flights

23 Aug - 05 Sep	Delta
13 Aug - 27 Aug	Air France
17 Aug - 09 Sep	Air France
25 Aug - 08 Sep	Delta
23 Aug - 08 Sep	Delta
11 Aug - 31 Aug	Virgin Atlantic
22 Aug - 05 Sep	Delta
25 Aug - 29 Aug	Scandinavian Airlines
26 Aug - 30 Aug	Alaska Airlines
26 Aug - 29 Aug	Alaska Airlines
03 Aug - 17 Aug	Scandinavian Airlines
19 Aug - 26 Aug	Alaska Airlines
04 Aug - 13 Aug	Icelandair
14 Aug - 25 Aug	Condor
02 Aug - 14 Aug	British Airways

Also check the deals for one-way flights from Seattle 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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Seattle to Athens in August from 473€

Return flights