Cheapest return flights from Denver to Barcelona in December from $546

Best time to book flights for Denver (DEN) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Barcelona (BCN) in December 2025 (see full year).

Return flights

13 Dec - 18 Dec British Airways
06 Dec - 13 Dec United
13 Dec - 18 Jan British Airways
16 Dec - 23 Dec United
15 Dec - 19 Dec Icelandair
15 Dec - 18 Dec Icelandair
26 Dec - 02 Jan United
16 Dec - 19 Dec Icelandair
16 Dec - 20 Dec Icelandair
19 Dec - 04 Jan Icelandair
17 Dec - 20 Dec British Airways

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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