Cheapest one-way flights from Seattle to Barcelona in June from 376€

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

One-Way flights

08 Jun WestJet
09 Jun WestJet
19 Jun WestJet
20 Jun Alaska Airlines
30 Jun Alaska Airlines
23 Jun WestJet
09 Jun Air France direct
30 Jun Air France direct
23 Jun Air France direct
20 Jun Air France direct

Also check the deals for return flights from Seattle to Barcelona in June.

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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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