Cheapest return flights from Seattle to Barcelona in June from $738

AirHint found the following cheapest return flights from Seattle (SEA) to Barcelona (BCN) in June 2026 (see full year).

Return flights

15 Jun - 21 Jun WestJet
02 Jun - 09 Jun Condor
02 Jun - 14 Jun Condor
20 Jun - 03 Jul Icelandair
06 Jun - 17 Jun Condor
13 Jun - 19 Jun Condor
02 Jun - 11 Jun Condor
17 Jun - 21 Jun Condor
03 Jun - 11 Jun Condor
15 Jun - 22 Jun Condor
14 Jun - 30 Jun Lufthansa
17 Jun - 02 Jul Condor
22 Jun - 05 Jul Aer Lingus
20 Jun - 03 Jul Delta direct
27 Jun - 04 Jul Icelandair
30 Jun - 07 Jul Iberia
28 Jun - 05 Jul Iberia

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

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