Cheapest return flights from St. Louis to Athens in September from $739

Best time to book flights for St. Louis (STL) to Athens (ATH) flights at AirHint

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

Return flights

16 Sep - 30 Sep Scandinavian Airlines
22 Sep - 30 Sep Air Canada
22 Sep - 29 Sep United
27 Sep - 04 Oct United
02 Sep - 09 Sep United
12 Sep - 19 Sep United
17 Sep - 24 Sep United
07 Sep - 14 Sep United
22 Sep - 26 Sep Air Canada

Also check the deals for one-way flights from St. Louis 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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