AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Barcelona (BCN) in May 2026 (see full year).

Return flights

02 May - 09 May	Icelandair
03 May - 21 May	Icelandair
08 May - 18 May	Air Canada
05 May - 12 May	Delta
06 May - 12 May	Delta
15 May - 29 May	Frontier Airlines
20 May - 02 Jun	Lufthansa
01 May - 08 May	Icelandair
20 May - 01 Jun	Air Canada
12 May - 23 May	Air Canada
12 May - 17 May	Air Canada
21 May - 02 Jun	Air Canada
15 May - 24 May	Air Canada
21 May - 01 Jun	Lufthansa
29 May - 01 Jun	Spirit Airlines
31 May - 07 Jun	Icelandair

Also check the deals for one-way flights from Raleigh-durham to Barcelona in May.

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 Raleigh-durham to Barcelona in May from $378

Return flights