Cheapest return flights from Seattle to Barcelona in March from 336€

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

Return flights

10 Mar - 17 Mar Air Canada
09 Mar - 16 Mar Lufthansa
16 Mar - 11 Apr Lufthansa
22 Mar - 29 Mar Icelandair
21 Mar - 28 Mar Icelandair
20 Mar - 27 Mar Air Canada
06 Mar - 28 Mar Lufthansa
05 Mar - 28 Mar British Airways
27 Mar - 06 Apr Turkish Airlines
06 Mar - 13 Mar Icelandair

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

Skyscanner

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

Feel free to contact us with any feedback or request another flight research.