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

Return flights

03 Dec - 10 Dec	Delta
30 Dec - 13 Jan	British Airways
02 Dec - 13 Dec	Air Canada
05 Dec - 07 Dec	Air France
08 Dec - 22 Dec	Iberia
15 Dec - 10 Jan	Austrian Airlines
27 Dec - 10 Jan	Frontier Airlines
23 Dec - 10 Jan	Spirit Airlines
08 Dec - 15 Dec	Turkish Airlines
17 Dec - 08 Jan	Spirit Airlines
22 Dec - 11 Jan	Spirit Airlines
02 Dec - 09 Dec	Turkish Airlines
30 Dec - 05 Jan	KLM
04 Dec - 11 Dec	Turkish Airlines
19 Dec - 10 Jan	Frontier Airlines
24 Dec - 31 Dec	Turkish Airlines
06 Dec - 13 Dec	Turkish Airlines
14 Dec - 21 Dec	Turkish Airlines
15 Dec - 03 Jan	Spirit Airlines
30 Dec - 06 Jan	Turkish 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