Cheapest return flights from Seattle to Barcelona in January from $612
AirHint found the following cheapest return flights from Seattle (SEA) to Barcelona (BCN) in January 2026 (see full year).
Return flights
Also check the deals for one-way flights from Seattle to Barcelona in January.
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.
