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

Return flights

24 Apr - 29 Apr	Icelandair
23 Apr - 16 May	Icelandair
11 Apr - 18 Apr	Icelandair
16 Apr - 23 Apr	Icelandair
13 Apr - 20 Apr	Icelandair
20 Apr - 27 Apr	Icelandair
21 Apr - 28 Apr	British Airways
07 Apr - 14 Apr	British Airways
08 Apr - 15 Apr	British Airways
14 Apr - 21 Apr	British Airways
22 Apr - 29 Apr	British Airways
09 Apr - 02 May	Iberia

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

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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Cheapest return flights from Denver to Barcelona in April from 365€

Return flights