AirHint found the following cheapest one-way flights from Detroit (DTW) to Barcelona (BCN) in December 2025 (see full year).
One-Way flights
| 07 Dec | Spirit Airlines | ||
| 10 Dec | Spirit Airlines | ||
| 16 Dec | Spirit Airlines | ||
| 13 Dec | Delta | ||
| 23 Dec | Air France |
Also check the deals for return flights from Detroit to Barcelona in December.
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