Seattle to Madrid, Spain for only $421 roundtrip

All the information on this page is accurate at the time of publication.

If you are viewing this deal at a later date, the price and availability may no longer be as advertised.

Become a Secret Flying member to receive alerts to your inbox the moment we publish a flight deal.

Cheap flights from Seattle to Madrid, Spain for only $421 roundtrip with Alaska Airlines, British Airways and American Airlines.

The example dates listed below range between $421 and $458 roundtrip.

DEPART:
Seattle, USA

ARRIVE:
Madrid, Spain

RETURN:
Seattle, USA

DATES:
Availability from January to April 2026

Example dates:
25th Jan – 1st Feb
26th Jan – 2nd Feb
27th Jan – 3rd Feb
28th Jan – 4th Feb
30th Jan – 6th Feb
3rd-10th Feb
5th-12th Feb
6th-13th Feb
8th-15th Feb
9th-16th Feb
10th-17th Feb
17th-24th Feb
18th-25th Feb
19th-26th Feb
20th-27th Feb
21st-28th Feb
22nd Feb – 1st Mar
23rd Feb – 2nd Mar
24th Feb – 3rd Mar
25th Feb – 4th Mar
26th Feb – 5th Mar
27th Feb – 6th Mar
28th Feb – 7th Mar
1st-8th Mar
2nd-9th Mar
3rd-10th Mar
4th-11th Mar
5th-12th Mar
6th-13th Mar
8th-15th Mar
9th-16th Mar
10th-17th Mar
11th-18th Mar
12th-19th Mar
16th-23rd Mar
17th-24th Mar
24th-31st Mar
7th-14th Apr
8th-15th Apr
9th-16th Apr
11th-18th Apr
13th-20th Apr
14th-21st Apr
15th-22nd Apr
16th-23rd Apr
17th-24th Apr
18th-25th Apr
20th-27th Apr
21st-28th Apr
22nd-29th Apr

and more…

STOPS:
Various Cities

AIRLINES:
Alaska Airlines
British Airways
American Airlines