Cheapest return flights from Seattle to Barcelona in June from 749€

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

10 Jun - 17 Jun WestJet
01 Jun - 08 Jun Icelandair
03 Jun - 10 Jun Icelandair
04 Jun - 11 Jun Icelandair
04 Jun - 08 Jun Icelandair
05 Jun - 12 Jun WestJet
02 Jun - 09 Jun Icelandair
11 Jun - 18 Jun Icelandair
09 Jun - 16 Jun WestJet
12 Jun - 19 Jun WestJet
24 Jun - 01 Jul WestJet
25 Jun - 02 Jul Lufthansa
27 Jun - 04 Jul WestJet
26 Jun - 03 Jul Icelandair

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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