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

Return flights

03 Sep - 10 Sep	Delta
09 Sep - 23 Sep	Delta
10 Sep - 23 Sep	Delta
07 Sep - 16 Sep	Delta
19 Sep - 03 Oct	Turkish Airlines
11 Sep - 23 Sep	Turkish Airlines
30 Sep - 11 Oct	Turkish Airlines
10 Sep - 21 Sep	Air France
25 Sep - 02 Oct	Turkish Airlines
01 Sep - 13 Sep	Air France
23 Sep - 30 Sep	Turkish Airlines
09 Sep - 16 Sep	Turkish Airlines
11 Sep - 18 Sep	Turkish Airlines
08 Sep - 04 Oct	Turkish Airlines
24 Sep - 18 Oct	Spirit Airlines
27 Sep - 04 Oct	Turkish Airlines
29 Sep - 06 Oct	Turkish Airlines

Also check the deals for one-way flights from Houston 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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Houston to Athens in September from $543

Return flights