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

Return flights

30 Jan - 02 Feb	Ryanair
23 Jan - 29 Jan	TAP	direct
17 Jan - 24 Jan	Iberia
27 Jan - 01 Feb	Iberia
12 Jan - 29 Jan	British Airways
20 Jan - 02 Feb	British Airways
27 Jan - 01 Feb	TAP	direct
31 Jan - 28 Feb	TAP	direct
12 Jan - 28 Jan	KLM
15 Jan - 22 Jan	KLM
22 Jan - 02 Feb	Aer Lingus
29 Jan - 31 Jan	LEVEL
17 Jan - 24 Jan	TAP	direct
14 Jan - 21 Jan	TAP	direct
20 Jan - 27 Jan	Azores Airlines
22 Jan - 27 Jan	Lufthansa
30 Jan - 02 Feb	TAP	direct
20 Jan - 02 Feb	TAP	direct
26 Jan - 02 Feb	Azores Airlines
27 Jan - 03 Feb	Azores Airlines

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 $532

Return flights