AirHint found the following cheapest return flights from Detroit (DTW) to Bucharest (OTP) in May 2026 (see full year).

Return flights

05 May - 13 May	Lufthansa
06 May - 14 May	Lufthansa
12 May - 20 May	Lufthansa
13 May - 21 May	Lufthansa
10 May - 18 May	Lufthansa
18 May - 26 May	Lufthansa
19 May - 27 May	Lufthansa
17 May - 25 May	Lufthansa
07 May - 15 May	Lufthansa
04 May - 12 May	Delta
26 May - 02 Jun	Lufthansa
27 May - 03 Jun	Lufthansa
26 May - 03 Jun	Lufthansa
25 May - 02 Jun	Lufthansa
27 May - 04 Jun	Lufthansa
25 May - 01 Jun	Lufthansa
24 May - 01 Jun	Lufthansa
31 May - 08 Jun	Lufthansa
28 May - 04 Jun	Condor
29 May - 05 Jun	Lufthansa

Also check the deals for one-way flights from Detroit to Bucharest 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 Detroit to Bucharest in May from $585

Return flights