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

Return flights

19 Aug - 19 Sep	Finnair
13 Aug - 27 Aug	Lufthansa
13 Aug - 20 Aug	United
19 Aug - 26 Aug	United
12 Aug - 19 Aug	Air Canada
15 Aug - 22 Aug	United
17 Aug - 24 Aug	United
25 Aug - 01 Sep	KLM
24 Aug - 31 Aug	Air Canada
05 Aug - 12 Aug	United
07 Aug - 14 Aug	United
08 Aug - 15 Aug	Delta
27 Aug - 03 Sep	United
29 Aug - 05 Sep	United

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest return flights from Phoenix to Barcelona in August from $584

Return flights