AirHint found the following cheapest return flights from Detroit (DTW) to Barcelona (BCN) in July 2026 (see full year).
Return flights
| 13 Jul - 31 Jul | WestJet | ||
| 30 Jul - 13 Aug | WestJet | ||
| 16 Jul - 20 Jul | Frontier Airlines | ||
| 25 Jul - 08 Aug | Frontier Airlines | ||
| 02 Jul - 14 Jul | WestJet | ||
| 17 Jul - 26 Jul | Frontier Airlines |
Also check the deals for one-way flights from Detroit to Barcelona in July.
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