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

Return flights

22 Sep - 28 Sep	Air France
05 Sep - 17 Sep	Air France
08 Sep - 21 Sep	Air France
01 Sep - 16 Sep	KLM
02 Sep - 17 Sep	Air France
16 Sep - 14 Oct	Air France
16 Sep - 21 Oct	Air France
16 Sep - 07 Oct	Air France
16 Sep - 08 Oct	Air France
04 Sep - 19 Sep	Air France
01 Sep - 18 Sep	KLM
14 Sep - 19 Sep	KLM
22 Sep - 22 Oct	Air France
07 Sep - 21 Sep	KLM
23 Sep - 16 Oct	Ryanair
11 Sep - 19 Sep	KLM
11 Sep - 12 Oct	KLM
17 Sep - 17 Oct	Air France
29 Sep - 08 Oct	Air France
30 Sep - 25 Oct	Air France

Also check the deals for one-way flights from Newcastle to Bangkok 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 Newcastle to Bangkok in September from $788

Return flights