Cheapest return flights from Denver to Barcelona in June from $663

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 June 2025 (see full year).

Return flights

11 Jun - 18 Jun Frontier Airlines
12 Jun - 03 Jul WestJet
21 Jun - 29 Jun WestJet
06 Jun - 13 Jun WestJet
03 Jun - 13 Jun Icelandair
12 Jun - 19 Jun Icelandair
08 Jun - 15 Jun Frontier Airlines
05 Jun - 12 Jun Icelandair
09 Jun - 03 Jul WestJet
05 Jun - 09 Jun jetBlue
04 Jun - 11 Jun Alaska Airlines
02 Jun - 06 Jun Frontier Airlines
13 Jun - 04 Jul Frontier Airlines
13 Jun - 10 Jul Sun Country Airlines
24 Jun - 05 Jul WestJet
26 Jun - 03 Jul United
29 Jun - 06 Jul United

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

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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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