Cheapest return flights from Chicago to Bucharest in December from 433€

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

Return flights

04 Dec - 18 Dec Lufthansa
24 Dec - 11 Jan British Airways
08 Dec - 31 Dec Air Canada
07 Dec - 21 Dec Turkish Airlines
24 Dec - 10 Jan British Airways
27 Dec - 17 Jan United
06 Dec - 01 Jan Frontier Airlines
27 Dec - 05 Jan LOT
16 Dec - 05 Jan Aer Lingus
23 Dec - 17 Jan British Airways
23 Dec - 10 Jan Frontier Airlines
23 Dec - 11 Jan British Airways
22 Dec - 10 Jan Frontier Airlines
17 Dec - 31 Dec Lufthansa

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

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