Cheapest return HEL–BKK flights, September

AirHint found the following cheapest return flights from Helsinki (HEL) to Bangkok (BKK) in September 2026 (see full year).

Return flights

29 Sep - 16 Oct Juneyao Airlines
15 Sep - 06 Oct Juneyao Airlines
01 Sep - 29 Sep Qatar Airways
10 Sep - 29 Sep Qatar Airways
01 Sep - 14 Sep Qatar Airways
10 Sep - 24 Sep Qatar Airways
15 Sep - 24 Sep Qatar Airways
07 Sep - 28 Sep Qatar Airways
14 Sep - 21 Sep Qatar Airways
10 Sep - 21 Sep Qatar Airways
22 Sep - 29 Sep Qatar Airways
08 Sep - 29 Sep Qatar Airways
24 Sep - 21 Oct Qatar Airways
24 Sep - 08 Oct Qatar Airways
22 Sep - 06 Oct Qatar Airways
10 Sep - 19 Oct Qatar Airways
12 Sep - 20 Oct Qatar Airways
13 Sep - 21 Oct Qatar Airways
12 Sep - 21 Oct Qatar Airways
19 Sep - 20 Oct Qatar Airways

Also check the deals for one-way flights from Helsinki to Bangkok in September.

Powered by

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

Feel free to contact us with any feedback or request another flight research.