Cheap flights from Barcelona to Northwest Washington

View AU$868 flight on Wed, 10 Dec. 2025Opens in a new window

Popular airlines from Barcelona to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Barcelona (BCN) to Northwest Washington (SEA)

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.

Delta
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$1,575 Return, found 7 hours ago
AU$1,575
Return
found 7 hours ago
Select Delta flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$1,575 found 7 hours ago
Virgin Atlantic
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$1,948 Return, found 7 hours ago
AU$1,948
Return
found 7 hours ago
Select Virgin Atlantic flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$1,948 found 7 hours ago
Air Canada
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$2,399 Return, found 7 hours ago
AU$2,399
Return
found 7 hours ago
Select Air Canada flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$2,399 found 7 hours ago
United
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$2,417 Return, found 7 hours ago
AU$2,417
Return
found 7 hours ago
Select United flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$2,417 found 7 hours ago
Lufthansa
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$2,447 Return, found 7 hours ago
AU$2,447
Return
found 7 hours ago
Select Lufthansa flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$2,447 found 7 hours ago
KLM
Tue, 5 Aug. - Sat, 9 Aug.
BCN
Barcelona
SEA
Seattle
AU$2,576 Return, found 7 hours ago
AU$2,576
Return
found 7 hours ago
Select KLM flight, departing Tue, 5 Aug. from Barcelona to Seattle, returning Sat, 9 Aug., priced at AU$2,576 found 7 hours ago
*Available to Expedia members.