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

Return flights

07 Dec - 28 Dec	Lufthansa
05 Dec - 27 Dec	Austrian Airlines
05 Dec - 28 Dec	Austrian Airlines
01 Dec - 13 Dec	Etihad Airways
25 Dec - 09 Jan	Turkish Airlines
26 Dec - 06 Jan	Vueling Airlines
23 Dec - 30 Dec	Vueling Airlines
27 Dec - 07 Jan	Vueling Airlines
16 Dec - 04 Jan	Wizz Air
27 Dec - 06 Jan	Vueling Airlines
24 Dec - 06 Jan	Vueling Airlines
21 Dec - 02 Jan	Turkish Airlines
25 Dec - 05 Jan	Turkish Airlines
16 Dec - 05 Jan	Wizz Air
20 Dec - 05 Jan	Vueling Airlines

Also check the deals for one-way flights from Bilbao 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 Bilbao to Bangkok in December from 592€

Return flights