Cheapest return flights from Seattle to Barcelona in June from $714

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 June 2025 (see full year).

Return flights

04 Jun - 17 Jun Icelandair
10 Jun - 17 Jun Icelandair
12 Jun - 16 Jun Icelandair
06 Jun - 15 Jun Icelandair
27 Jun - 11 Jul Hawaiian Airlines
19 Jun - 23 Jun WestJet
21 Jun - 30 Jun SWISS
27 Jun - 12 Jul Icelandair
11 Jun - 18 Jun United
02 Jun - 09 Jun Icelandair
17 Jun - 24 Jun Iberia
25 Jun - 30 Jun Icelandair
26 Jun - 03 Jul United
27 Jun - 04 Jul Iberia

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

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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