Cheapest one-way flights from Seattle to Barcelona in April from 308€

Best time to book flights for Seattle (SEA) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest one-way flights from Seattle (SEA) to Barcelona (BCN) in April 2025 (see full year).

One-Way flights

09 Apr Frontier Airlines
10 Apr Frontier Airlines
11 Apr Spirit Airlines
15 Apr Icelandair
02 Apr Frontier Airlines
03 Apr Frontier Airlines
16 Apr Frontier Airlines
20 Apr Alaska Airlines
17 Apr Hawaiian Airlines

Also check the deals for return flights from Seattle to Barcelona in April.

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.

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