AirHint found the following cheapest return flights from Detroit (DTW) to Bangkok (BKK) in September 2025 (see full year).

Return flights

09 Sep - 16 Sep	jetBlue
17 Sep - 24 Sep	jetBlue
09 Sep - 21 Sep	jetBlue
09 Sep - 14 Oct	jetBlue
09 Sep - 23 Sep	jetBlue
16 Sep - 19 Oct	jetBlue
27 Sep - 18 Oct	jetBlue
09 Sep - 25 Sep	jetBlue
16 Sep - 23 Sep	Spirit Airlines
09 Sep - 29 Sep	jetBlue
23 Sep - 13 Oct	jetBlue
15 Sep - 22 Sep	jetBlue
23 Sep - 30 Sep	Spirit Airlines
29 Sep - 06 Oct	Spirit Airlines
17 Sep - 13 Oct	jetBlue
01 Sep - 23 Sep	jetBlue
09 Sep - 13 Oct	jetBlue
27 Sep - 04 Oct	jetBlue
17 Sep - 07 Oct	Spirit Airlines
30 Sep - 14 Oct	Spirit Airlines

Also check the deals for one-way flights from Detroit 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 Detroit to Bangkok in September from $872

Return flights