Cheapest return flights from Denver to Barcelona in May from $645

AirHint found the following cheapest return flights from Denver (DEN) to Barcelona (BCN) in May 2026 (see full year).

Return flights

10 May - 30 May Turkish Airlines
08 May - 22 May Icelandair
11 May - 25 May Aer Lingus
08 May - 15 May Icelandair
08 May - 25 May Aer Lingus
06 May - 30 May Icelandair
30 May - 06 Jun jetBlue
29 May - 05 Jun Aer Lingus
25 May - 08 Jun Aer Lingus
29 May - 08 Jun WestJet
06 May - 17 May British Airways
31 May - 07 Jun Turkish Airlines

Also check the deals for one-way flights from Denver to Barcelona in May.

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