Cheap flights from Seattle to Costa Barcelona

View AU$588 flight on Mon, 1 Sep. 2025Opens in a new window

Popular airlines from Seattle to Costa Barcelona

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Seattle (SEA) to Costa Barcelona (BCN)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, 3 Dec. - Wed, 10 Dec.
SEA
Seattle
BCN
Barcelona
AU$764 Return, found 4 days ago
AU$764
Return
found 4 days ago
Select Aer Lingus flight, departing Wed, 3 Dec. from Seattle to Barcelona, returning Wed, 10 Dec., priced at AU$764 found 4 days ago
Scandinavian Airlines
Sun, 24 Aug. - Sat, 6 Sep.
SEA
Seattle
BCN
Barcelona
AU$836 Return, found 4 days ago
AU$836
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Sun, 24 Aug. from Seattle to Barcelona, returning Sat, 6 Sep., priced at AU$836 found 4 days ago
United
Wed, 3 Dec. - Wed, 10 Dec.
SEA
Seattle
BCN
Barcelona
AU$1,040 Return, found 4 days ago
AU$1,040
Return
found 4 days ago
Select United flight, departing Wed, 3 Dec. from Seattle to Barcelona, returning Wed, 10 Dec., priced at AU$1,040 found 4 days ago
British Airways
Wed, 3 Dec. - Wed, 10 Dec.
SEA
Seattle
BCN
Barcelona
AU$1,042 Return, found 4 days ago
AU$1,042
Return
found 4 days ago
Select British Airways flight, departing Wed, 3 Dec. from Seattle to Barcelona, returning Wed, 10 Dec., priced at AU$1,042 found 4 days ago
Lufthansa
Wed, 3 Dec. - Wed, 10 Dec.
SEA
Seattle
BCN
Barcelona
AU$1,088 Return, found 4 days ago
AU$1,088
Return
found 4 days ago
Select Lufthansa flight, departing Wed, 3 Dec. from Seattle to Barcelona, returning Wed, 10 Dec., priced at AU$1,088 found 4 days ago
Swiss International Air Lines
Wed, 3 Dec. - Wed, 10 Dec.
SEA
Seattle
BCN
Barcelona
AU$1,126 Return, found 4 days ago
AU$1,126
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Wed, 3 Dec. from Seattle to Barcelona, returning Wed, 10 Dec., priced at AU$1,126 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to Barcelona (BCN)

November is typically the cheapest month to fly

From AU$627 - AU$1,924 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.