AirHint found the following cheapest return flights from Seattle (SEA) to Athens (ATH) in April 2026 (see full year).

Return flights

07 Apr - 14 Apr	Turkish Airlines
02 Apr - 09 Apr	Turkish Airlines
01 Apr - 08 Apr	Turkish Airlines
03 Apr - 10 Apr	Turkish Airlines
06 Apr - 13 Apr	Turkish Airlines
03 Apr - 14 Apr	Turkish Airlines
04 Apr - 15 Apr	Turkish Airlines
05 Apr - 12 Apr	Turkish Airlines
02 Apr - 12 Apr	Turkish Airlines
16 Apr - 25 Apr	Turkish Airlines
23 Apr - 09 May	Alaska Airlines

Also check the deals for one-way flights from Seattle to Athens in April.

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 Seattle to Athens in April from 497€

Return flights