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

Return flights

22 Jan - 02 Feb	Air Europa
22 Jan - 27 Jan	Air Europa
15 Jan - 19 Jan	Iberia
30 Jan - 01 Feb	Ryanair
24 Jan - 31 Jan	Iberia
23 Jan - 29 Jan	Iberia
28 Jan - 04 Feb	Iberia
21 Jan - 10 Feb	Iberia
25 Jan - 04 Feb	Iberia
26 Jan - 04 Feb	Iberia
27 Jan - 05 Feb	Iberia
23 Jan - 01 Feb	Iberia
13 Jan - 27 Jan	British Airways
24 Jan - 31 Jan	TAP	direct
23 Jan - 29 Jan	TAP	direct
27 Jan - 05 Feb	TAP	direct
23 Jan - 01 Feb	TAP	direct
18 Jan - 31 Jan	British Airways
12 Jan - 26 Jan	British Airways
15 Jan - 22 Jan	Aer Lingus

Also check the deals for one-way flights from Lisbon to Boston in January.

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 Lisbon to Boston in January from 390€

Return flights