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

Return flights

02 Dec - 16 Dec	British Airways
24 Dec - 31 Dec	United
26 Dec - 09 Jan	United
24 Dec - 05 Jan	Lufthansa
23 Dec - 06 Jan	British Airways
23 Dec - 30 Dec	United
23 Dec - 01 Jan	Delta
24 Dec - 01 Jan	United
18 Dec - 25 Dec	United

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 529€

Return flights