Cheapest return flights from Shannon to Boston in December from 399€

AirHint found the following cheapest return flights from Shannon (SNN) to Boston (BOS) in December 2025 (see full year).

Return flights

04 Dec - 08 Dec Aer Lingus direct
21 Dec - 04 Jan Aer Lingus direct
26 Dec - 30 Dec Aer Lingus direct
22 Dec - 29 Dec Aer Lingus direct
22 Dec - 28 Dec Aer Lingus direct
04 Dec - 07 Dec Aer Lingus direct
23 Dec - 28 Dec Aer Lingus direct
23 Dec - 30 Dec Aer Lingus direct
27 Dec - 02 Jan Aer Lingus direct
26 Dec - 04 Jan Aer Lingus direct
27 Dec - 03 Jan Aer Lingus direct
21 Dec - 03 Jan Aer Lingus direct
20 Dec - 29 Dec Aer Lingus direct
21 Dec - 31 Dec Aer Lingus direct
10 Dec - 13 Dec British Airways
28 Dec - 04 Jan Aer Lingus direct
28 Dec - 02 Jan British Airways

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

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