Cheapest return flights from Oslo to Bangkok in September from $598

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

Return flights

02 Sep - 26 Sep SWISS
17 Sep - 24 Sep SWISS
02 Sep - 23 Sep SWISS
03 Sep - 23 Sep SWISS
21 Sep - 12 Oct Austrian Airlines
23 Sep - 07 Oct Lufthansa
01 Sep - 23 Sep SWISS
12 Sep - 26 Sep SWISS
25 Sep - 24 Oct Finnair
05 Sep - 18 Sep Lufthansa
26 Sep - 24 Oct Finnair
01 Sep - 20 Sep Thai Airways direct
02 Sep - 26 Sep Thai Airways direct
12 Sep - 26 Sep Thai Airways direct
23 Sep - 07 Oct Thai Airways direct
21 Sep - 12 Oct Thai Airways direct
25 Sep - 24 Oct Thai Airways direct
26 Sep - 24 Oct Thai Airways direct

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

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