AirHint found the following cheapest return flights from Bilbao (BIO) to Kuala Lumpur (KUL) in September 2025 (see full year).

Return flights

15 Sep - 15 Oct	Etihad Airways
10 Sep - 24 Sep	Etihad Airways
07 Sep - 24 Sep	Vueling Airlines
07 Sep - 21 Sep	Vueling Airlines
14 Sep - 24 Sep	Etihad Airways
29 Sep - 12 Oct	Vueling Airlines
02 Sep - 28 Sep	Vueling Airlines
03 Sep - 25 Sep	Etihad Airways
04 Sep - 29 Sep	Iberia
15 Sep - 20 Sep	Wizz Air Malta
28 Sep - 11 Oct	Vueling Airlines
01 Sep - 15 Sep	Etihad Airways
05 Sep - 21 Sep	Wizz Air Malta
20 Sep - 04 Oct	Air Europa
27 Sep - 11 Oct	Wizz Air Malta
19 Sep - 03 Oct	easyJet

Also check the deals for one-way flights from Bilbao to Kuala Lumpur in September.

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 Bilbao to Kuala Lumpur in September from 593€

Return flights