AirHint found the following cheapest return flights from Lisbon (LIS) to Bangkok (BKK) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	Aegean Airlines
06 Dec - 24 Dec	Pegasus Airlines
03 Dec - 25 Dec	Ryanair
08 Dec - 11 Dec	Pegasus Airlines
04 Dec - 10 Dec	Ryanair
05 Dec - 12 Dec	Vueling Airlines
11 Dec - 26 Dec	Ryanair
11 Dec - 24 Dec	Ryanair
05 Dec - 08 Dec	Vueling Airlines
01 Dec - 05 Dec	Wizz Air
10 Dec - 22 Jan	Wizz Air Malta
03 Dec - 28 Jan	Ryanair
01 Dec - 28 Jan	Wizz Air
29 Dec - 19 Jan	Air Europa
03 Dec - 10 Jan	Ryanair
01 Dec - 30 Jan	Wizz Air
15 Dec - 15 Jan	Pegasus Airlines
31 Dec - 17 Jan	Ryanair
28 Dec - 21 Jan	Ryanair
28 Dec - 11 Jan	Ryanair

Also check the deals for one-way flights from Lisbon to Bangkok 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 Lisbon to Bangkok in December from 496€

Return flights