Cheapest return flights from Seattle to Athens in September from $512

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

Return flights

15 Sep - 22 Sep Air Canada
09 Sep - 24 Sep Air Canada
15 Sep - 29 Sep British Airways
17 Sep - 01 Oct SWISS
12 Sep - 26 Sep Air Canada
19 Sep - 03 Oct Delta
19 Sep - 28 Sep British Airways
05 Sep - 14 Sep British Airways
04 Sep - 14 Sep British Airways

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

Skyscanner

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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