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

Return flights

02 Dec - 10 Dec	Air France
02 Dec - 11 Dec	Air France
02 Dec - 09 Dec	Air France
01 Dec - 10 Dec	KLM
03 Dec - 10 Dec	Delta
05 Dec - 10 Dec	Air France
10 Dec - 15 Dec	Delta
12 Dec - 17 Dec	British Airways
25 Dec - 20 Jan	KLM
23 Dec - 17 Jan	Spirit Airlines
10 Dec - 13 Dec	ITA Airways
12 Dec - 18 Dec	British Airways
23 Dec - 10 Jan	Spirit Airlines
17 Dec - 08 Jan	Spirit Airlines
22 Dec - 11 Jan	Spirit Airlines
30 Dec - 06 Jan	Turkish Airlines
18 Dec - 06 Jan	Frontier Airlines
10 Dec - 03 Jan	Spirit Airlines
19 Dec - 06 Jan	Frontier Airlines
27 Dec - 01 Jan	Spirit Airlines

Also check the deals for one-way flights from Houston to Athens in December.

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 Houston to Athens in December from $493

Return flights