Cheapest return flights from Seattle to Barcelona in May from $585

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

AirHint found the following cheapest return flights from Seattle (SEA) to Barcelona (BCN) in May 2025 (see full year).

Return flights

13 May - 21 May Icelandair
20 May - 27 May Icelandair
19 May - 27 May Icelandair
06 May - 14 May Icelandair
10 May - 18 May Icelandair
12 May - 19 May Icelandair
11 May - 19 May Icelandair
07 May - 14 May Icelandair
10 May - 17 May Icelandair
07 May - 15 May Icelandair
28 May - 04 Jun Icelandair
26 May - 03 Jun Icelandair
28 May - 05 Jun Icelandair
27 May - 04 Jun Icelandair
27 May - 03 Jun Hawaiian Airlines
26 May - 02 Jun Alaska Airlines
30 May - 08 Jun Air Canada
24 May - 01 Jun Hawaiian Airlines
25 May - 02 Jun Alaska Airlines
25 May - 01 Jun Turkish Airlines

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

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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