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

Return flights

04 Feb - 14 Feb	Aer Lingus	direct
11 Feb - 21 Feb	Aer Lingus	direct
12 Feb - 16 Feb	Aer Lingus	direct
14 Feb - 21 Feb	Aer Lingus	direct
14 Feb - 18 Feb	Aer Lingus	direct
18 Feb - 22 Feb	Aer Lingus	direct
16 Feb - 28 Feb	British Airways
16 Feb - 28 Feb	Aer Lingus	direct
15 Feb - 19 Feb	Aer Lingus	direct

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

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.

Book a cheap hotel in Boston

Cheap car rent in Boston

Cheapest return flights from Shannon to Boston in February from 355€

Return flights