AirHint found the following cheapest one-way flights from Chicago (ORD) to Barcelona (BCN) in December 2025 (see full year).
One-Way flights
| 02 Dec | Spirit Airlines | ||
| 12 Dec | Spirit Airlines | ||
| 14 Dec | Spirit Airlines | ||
| 25 Dec | Lufthansa | ||
| 17 Dec | jetBlue | ||
| 21 Dec | jetBlue | ||
| 19 Dec | WestJet | ||
| 20 Dec | Air Serbia | ||
| 18 Dec | jetBlue | ||
| 22 Dec | Frontier Airlines |
Also check the deals for return flights from Chicago to Barcelona in December.
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