Cheapest return flights from Seattle (SEA) to Barcelona (BCN), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
13 Aug 20 Aug Air Canada
17 Aug 24 Aug Air Canada
16 Aug 23 Aug Air Canada
19 Aug 26 Aug Icelandair
18 Aug 26 Aug Condor
17 Aug 22 Aug Condor
26 Aug 31 Aug Condor
22 Aug 11 Sep Icelandair
25 Aug 30 Aug Condor
21 Aug 11 Sep Icelandair
08 Aug 04 Sep Icelandair
28 Aug 03 Sep Condor
14 Aug 21 Aug Condor
15 Aug 29 Aug Icelandair
22 Aug 11 Sep Air France
Direct Flight
08 Aug 04 Sep Air France
Direct Flight
Powered by

deals for one-way flights from Seattle to Barcelona in August.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Updated Jul 4, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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