Cheapest return flights from Boston to Madrid in October from $397

AirHint found the following cheapest return flights from Boston (BOS) to Madrid (MAD) in October 2026 (see full year).

Return flights

13 Oct - 27 Oct Finnair direct
06 Oct - 13 Oct Iberia direct
07 Oct - 14 Oct Iberia direct
13 Oct - 20 Oct Iberia direct
08 Oct - 22 Oct Scandinavian Airlines
01 Oct - 08 Oct Iberia direct
02 Oct - 09 Oct Iberia direct
05 Oct - 12 Oct Iberia direct
08 Oct - 15 Oct Iberia direct
09 Oct - 16 Oct Iberia direct

Also check the deals for one-way flights from Boston to Madrid in October.

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