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

Return flights

29 Sep - 16 Oct	Air Canada
11 Sep - 18 Sep	United
10 Sep - 17 Sep	United
08 Sep - 10 Sep	Air Canada
08 Sep - 24 Sep	United
11 Sep - 15 Sep	United
24 Sep - 29 Sep	Delta
10 Sep - 16 Sep	United
09 Sep - 26 Sep	United
08 Sep - 23 Sep	United
25 Sep - 29 Sep	Delta
19 Sep - 23 Oct	Delta
30 Sep - 16 Oct	Lufthansa
20 Sep - 03 Oct	Delta
26 Sep - 03 Oct	Virgin Atlantic
24 Sep - 03 Oct	United
22 Sep - 18 Oct	United
21 Sep - 03 Oct	United
26 Sep - 14 Oct	Virgin Atlantic
29 Sep - 20 Oct	Delta

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

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 New York to Athens in September from 425€

Return flights