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

Return flights

03 Jun - 10 Jun	Air Canada
09 Jun - 23 Jun	Icelandair
09 Jun - 16 Jun	Icelandair
16 Jun - 23 Jun	Icelandair
08 Jun - 15 Jun	Icelandair
04 Jun - 11 Jun	Icelandair
05 Jun - 12 Jun	Icelandair
07 Jun - 14 Jun	Air Canada
06 Jun - 13 Jun	Icelandair
05 Jun - 08 Jun	Icelandair
29 Jun - 06 Jul	Icelandair
24 Jun - 01 Jul	Icelandair

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

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 June from 708€

Return flights