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

Return flights

15 Nov - 22 Nov	Aer Lingus	direct
16 Nov - 22 Nov	Aer Lingus	direct
23 Nov - 13 Dec	Aer Lingus	direct
27 Nov - 20 Dec	Aer Lingus	direct
26 Nov - 02 Dec	Aer Lingus	direct
14 Nov - 19 Nov	Aer Lingus	direct
13 Nov - 16 Nov	Aer Lingus	direct
25 Nov - 07 Dec	Aer Lingus	direct
25 Nov - 02 Dec	Aer Lingus	direct
15 Nov - 24 Nov	Aer Lingus	direct
03 Nov - 07 Nov	Aer Lingus
03 Nov - 08 Nov	Aer Lingus
07 Nov - 11 Nov	British Airways
07 Nov - 14 Nov	Iberia
12 Nov - 14 Nov	jetBlue

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

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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Cheapest return flights from Boston to Shannon in November from 304€

Return flights