AirHint found the following cheapest return flights from Seattle (SEA) to Madrid (MAD) in June 2026 (see full year).
Return flights
| 21 Jun - 29 Jun | Condor | ||
| 22 Jun - 01 Jul | British Airways | ||
| 12 Jun - 19 Jun | Iberia |
Also check the deals for one-way flights from Seattle to Madrid in June.
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