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

Return flights

10 Dec - 25 Dec	Air Europa
03 Dec - 10 Dec	Vueling Airlines
01 Dec - 10 Dec	Vueling Airlines
01 Dec - 20 Dec	Vueling Airlines
01 Dec - 18 Dec	Ryanair
01 Dec - 11 Dec	Iberia
09 Dec - 24 Dec	TAP
01 Dec - 17 Dec	Iberia
08 Dec - 23 Dec	Ryanair
05 Dec - 24 Dec	Iberia
31 Dec - 14 Jan	Vueling Airlines
13 Dec - 16 Jan	Air Europa
31 Dec - 18 Jan	Vueling Airlines
29 Dec - 10 Jan	Air Europa
01 Dec - 14 Jan	easyJet
01 Dec - 13 Jan	Finnair
02 Dec - 13 Jan	Finnair
30 Dec - 23 Jan	British Airways
30 Dec - 13 Jan	British Airways
30 Dec - 14 Jan	British Airways

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Lisbon to Bangkok in December from 506€

Return flights