AirHint found the following cheapest return flights from Portland (PDX) to Barcelona (BCN) in May 2026 (see full year).

Return flights

05 May - 12 May	Delta
03 May - 11 May	Air France
05 May - 13 May	Delta
04 May - 12 May	United
07 May - 14 May	Delta
07 May - 15 May	Icelandair
03 May - 10 May	Delta
06 May - 13 May	Delta
06 May - 14 May	Delta
12 May - 19 May	Delta
25 May - 01 Jun	Condor
30 May - 06 Jun	Condor
24 May - 01 Jun	Condor
29 May - 06 Jun	Condor
25 May - 02 Jun	Condor
26 May - 02 Jun	United
27 May - 03 Jun	United
26 May - 03 Jun	United
27 May - 04 Jun	Finnair
30 May - 07 Jun	Icelandair

Also check the deals for one-way flights from Portland 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 Portland to Barcelona in May from $547

Return flights