Book Cheap Flights to Spain on Alaska Airlines

Find Spain flight deals.*

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Seattle (SEA)to

Barcelona (BCN)
Depart: Sep 28, 2026
From
$766
Seen: 13 hours ago
One-way
Main

Seattle (SEA)to

Barcelona (BCN)
Depart: Sep 29, 2026
From
$766
Seen: 13 hours ago
One-way
Main

San Francisco (SFO)to

Madrid (MAD)
Depart: Sep 29, 2026
From
$639
Seen: 14 hours ago
One-way
Main

Portland (PDX)to

Barcelona (BCN)
Depart: Sep 14, 2026
From
$886
Seen: 4 hours ago
One-way
Main
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

One-way offers for plane tickets to Spain.*

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*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.