Cheapest return flights from Portland to Athens in September from 578€

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

Return flights

23 Sep - 09 Oct Lufthansa
06 Sep - 17 Sep Frontier Airlines
08 Sep - 23 Sep Delta
28 Sep - 13 Oct Delta
16 Sep - 11 Oct Spirit Airlines
02 Sep - 27 Oct British Airways
09 Sep - 04 Oct British Airways
10 Sep - 04 Oct British Airways
18 Sep - 30 Sep British Airways
18 Sep - 02 Oct Frontier Airlines
29 Sep - 15 Oct KLM
14 Sep - 04 Oct Hawaiian Airlines

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

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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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