Cheap United flights Seattle (SEA) to Madrid (MAD)

Cheap United flights Seattle (SEA) to Madrid (MAD)

Prices were available within the past 7 days and start at for one-way flights and $637 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 14 - Mon, Feb 23

SEA

Seattle

MAD

Madrid

$637 Roundtrip, found 4 days ago

$637

Roundtrip

found 4 days ago

Select United flight, departing Sat, Feb 14 from Seattle to Madrid, returning Mon, Feb 23, priced at $637 found 4 days ago