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

Return flights

03 Mar - 10 Mar	United
04 Mar - 11 Mar	United
05 Mar - 12 Mar	Finnair
10 Mar - 17 Mar	United
09 Mar - 16 Mar	British Airways
02 Mar - 09 Mar	United
16 Mar - 23 Mar	Delta
06 Mar - 13 Mar	Iberia
08 Mar - 15 Mar	Iberia
17 Mar - 24 Mar	United
25 Mar - 01 Apr	Iberia
25 Mar - 08 Apr	British Airways
31 Mar - 07 Apr	British Airways
30 Mar - 06 Apr	Air France
27 Mar - 03 Apr	British Airways
29 Mar - 05 Apr	British Airways
26 Mar - 02 Apr	Delta
28 Mar - 04 Apr	Hawaiian Airlines

Also check the deals for one-way flights from Portland to Barcelona in March.

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 March from $474

Return flights