AirHint found the following cheapest return flights from Phoenix (PHX) to Barcelona (BCN) in August 2025 (see full year).

Return flights

19 Aug - 26 Aug	United
25 Aug - 02 Sep	Air Canada
21 Aug - 28 Aug	United
17 Aug - 24 Aug	United
25 Aug - 01 Sep	United
22 Aug - 01 Sep	United
23 Aug - 30 Aug	United
31 Aug - 07 Sep	United
09 Aug - 16 Aug	Iberia
27 Aug - 03 Sep	United
29 Aug - 05 Sep	United
03 Aug - 11 Aug	Air Canada

Also check the deals for one-way flights from Phoenix to Barcelona in August.

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 Phoenix to Barcelona in August from 514€

Return flights