Cheapest return flights from Chicago to Bucharest in December from $493

AirHint found the following cheapest return flights from Chicago (ORD) to Bucharest (OTP) in December 2025 (see full year).

Return flights

31 Dec - 14 Jan Lufthansa
04 Dec - 11 Dec Delta
29 Dec - 09 Jan Air Canada
11 Dec - 30 Dec Lufthansa
12 Dec - 29 Dec Lufthansa
17 Dec - 12 Jan Air Canada
28 Dec - 05 Jan Lufthansa
13 Dec - 04 Jan Frontier Airlines
28 Dec - 04 Jan Lufthansa
06 Dec - 01 Jan LOT
19 Dec - 29 Dec Frontier Airlines
21 Dec - 04 Jan Aer Lingus

Also check the deals for one-way flights from Chicago to Bucharest in December.

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