AirHint found the following cheapest one-way flights from Seattle (SEA) to Madrid (MAD) in January 2026 (see full year).
One-Way flights
| 25 Jan | Iberia | ||
| 26 Jan | Iberia | ||
| 28 Jan | Iberia | ||
| 14 Jan | Iberia | ||
| 19 Jan | Iberia | ||
| 20 Jan | Iberia | ||
| 21 Jan | Iberia | ||
| 11 Jan | Iberia | ||
| 13 Jan | Iberia | ||
| 27 Jan | Iberia |
Also check the deals for return flights from Seattle to Madrid in January.
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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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