Cheapest return flights from Detroit to Bucharest in September from $602

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

Return flights

30 Sep - 03 Oct Icelandair
21 Sep - 11 Oct Frontier Airlines
22 Sep - 29 Sep Spirit Airlines
19 Sep - 11 Oct Frontier Airlines
18 Sep - 11 Oct Frontier Airlines
22 Sep - 23 Sep Spirit Airlines

Also check the deals for one-way flights from Detroit to Bucharest in September.

Skyscanner

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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