Cheapest return flights from Seattle to Barcelona in July from $1037

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 July 2025 (see full year).

Return flights

06 Jul - 10 Jul Icelandair
14 Jul - 24 Jul Alaska Airlines
01 Jul - 05 Jul WestJet
27 Jul - 31 Jul Alaska Airlines
21 Jul - 25 Jul Icelandair
15 Jul - 19 Jul Alaska Airlines
30 Jul - 03 Aug Lufthansa
24 Jul - 28 Jul Alaska Airlines
12 Jul - 16 Jul WestJet
09 Jul - 13 Jul Icelandair
18 Jul - 22 Jul United

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

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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona