Cheapest return flights from Seattle to Barcelona in October from $472

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

Return flights

05 Oct - 14 Oct Scandinavian Airlines
07 Oct - 16 Oct Aer Lingus
29 Oct - 05 Nov Aer Lingus
07 Oct - 15 Oct Aer Lingus
15 Oct - 24 Oct Aer Lingus
22 Oct - 29 Oct United
31 Oct - 04 Nov Icelandair
02 Oct - 09 Oct Air Canada
18 Oct - 25 Oct Aer Lingus
12 Oct - 19 Oct United
04 Oct - 11 Oct Icelandair
27 Oct - 03 Nov Aer Lingus
26 Oct - 02 Nov Icelandair
28 Oct - 04 Nov British Airways
10 Oct - 25 Oct Air Canada
25 Oct - 01 Nov Hawaiian Airlines

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

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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