AirHint found the following cheapest return flights from Athens (ATH) to Lisbon (LIS) in December 2026 (see full year).

Return flights

03 Dec - 09 Dec	easyJet
26 Dec - 06 Jan	TAP	direct
04 Dec - 06 Dec	KLM
24 Dec - 27 Dec	Air Serbia
12 Dec - 16 Dec	Ryanair
12 Dec - 16 Dec	TAP	direct
26 Dec - 30 Dec	TAP	direct
27 Dec - 30 Dec	Air Serbia
03 Dec - 09 Dec	TAP	direct
28 Dec - 03 Jan	TAP	direct
04 Dec - 16 Dec	SKY express	direct
24 Dec - 27 Dec	TAP	direct
31 Dec - 04 Jan	TAP
31 Dec - 04 Jan	Aegean Airlines	direct

Also check the deals for one-way flights from Athens to Lisbon 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 Athens to Lisbon in December from 140€

Return flights