AirHint found the following cheapest one-way flights from Seattle (SEA) to Madrid (MAD) in April 2026 (see full year).
One-Way flights
| 02 Apr | Iberia | ||
| 01 Apr | Iberia | ||
| 03 Apr | Iberia | ||
| 06 Apr | Iberia | ||
| 07 Apr | Iberia | ||
| 08 Apr | Iberia | ||
| 12 Apr | Iberia | ||
| 13 Apr | Iberia | ||
| 05 Apr | Iberia | ||
| 09 Apr | Iberia |
Also check the deals for return flights from Seattle to Madrid in April.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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