Cheapest return flights from Shannon to Boston in January from $521

AirHint found the following cheapest return flights from Shannon (SNN) to Boston (BOS) in January 2026 (see full year).

Return flights

23 Jan - 26 Jan Ryanair
21 Jan - 25 Jan British Airways
29 Jan - 05 Feb British Airways
29 Jan - 04 Feb British Airways
29 Jan - 05 Feb Aer Lingus direct
31 Jan - 02 Feb Aer Lingus direct
30 Jan - 02 Feb Aer Lingus direct
29 Jan - 04 Feb Aer Lingus direct
15 Jan - 18 Jan Ryanair
20 Jan - 26 Jan British Airways
18 Jan - 25 Jan Aer Lingus direct
20 Jan - 26 Jan Aer Lingus direct
21 Jan - 25 Jan Aer Lingus direct
23 Jan - 26 Jan Aer Lingus direct
15 Jan - 22 Jan Ryanair
29 Jan - 14 Feb British Airways
19 Jan - 25 Jan Ryanair

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