AirHint found the following cheapest return flights from Oslo (OSL) to Bangkok (BKK) in May 2026 (see full year).

Return flights

05 May - 18 May	Lufthansa
13 May - 26 May	SWISS
29 May - 09 Jun	Lufthansa
14 May - 25 May	Lufthansa
09 May - 16 May	Finnair
23 May - 31 May	Finnair
15 May - 24 May	Finnair
09 May - 16 May	Thai Airways	direct
05 May - 18 May	Thai Airways	direct
23 May - 31 May	Thai Airways	direct
13 May - 26 May	Thai Airways	direct
29 May - 09 Jun	Thai Airways	direct

Also check the deals for one-way flights from Oslo to Bangkok in May.

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 Oslo to Bangkok in May from 507€

Return flights