Cheapest return flights from Boston to Madrid in December from $313

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

Return flights

02 Dec - 09 Dec Finnair direct
05 Dec - 12 Dec Iberia direct
01 Dec - 04 Dec Iberia direct
03 Dec - 06 Dec Iberia
04 Dec - 07 Dec Iberia
05 Dec - 08 Dec Iberia direct
25 Dec - 02 Jan Iberia
25 Dec - 02 Jan Iberia direct
28 Dec - 02 Jan Air Canada
28 Dec - 02 Jan Finnair direct

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

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