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

Return flights

18 Aug - 05 Sep	United
18 Aug - 29 Aug	United
18 Aug - 27 Aug	Air Canada
06 Aug - 20 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
11 Aug - 22 Aug	Air Canada
06 Aug - 21 Aug	Air Canada
11 Aug - 29 Aug	United
18 Aug - 26 Aug	United
19 Aug - 29 Aug	Air Canada
13 Aug - 21 Aug	Air Canada
31 Aug - 09 Sep	Air Canada
26 Aug - 04 Sep	TAP
19 Aug - 15 Sep	Aer Lingus
25 Aug - 03 Sep	United
26 Aug - 09 Sep	Air Canada
31 Aug - 12 Sep	United
26 Aug - 01 Sep	Icelandair
27 Aug - 04 Sep	Air Canada
26 Aug - 03 Sep	Air Canada

Also check the deals for one-way flights from Newark 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 Newark to Barcelona in August from 296€

Return flights