Cheapest return flights from Denver to Barcelona in October from $387

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 October 2025 (see full year).

Return flights

31 Oct - 14 Nov Icelandair
07 Oct - 21 Oct Air Canada
02 Oct - 09 Oct Air Canada
10 Oct - 17 Oct Air Canada
03 Oct - 10 Oct Air Canada
10 Oct - 24 Oct Air Canada
17 Oct - 24 Oct United
15 Oct - 26 Oct American Airlines
02 Oct - 11 Oct Aer Lingus

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

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona