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

Return flights

02 Mar - 09 Mar	Air Canada
03 Mar - 10 Mar	Air Canada
04 Mar - 11 Mar	Air Canada
09 Mar - 16 Mar	Air Canada
10 Mar - 17 Mar	Air Canada
04 Mar - 09 Mar	Air Canada
23 Mar - 30 Mar	Air Canada
21 Mar - 13 Apr	TAP	direct
10 Mar - 17 Mar	TAP	direct
03 Mar - 08 Mar	TAP	direct
10 Mar - 19 Mar	TAP	direct
28 Mar - 04 Apr	TAP
30 Mar - 04 Apr	TAP
31 Mar - 07 Apr	Scandinavian Airlines
31 Mar - 14 Apr	Scandinavian Airlines
21 Mar - 01 Apr	Iberia
25 Mar - 01 Apr	Iberia
22 Mar - 15 Apr	Scandinavian Airlines
14 Mar - 08 Apr	Scandinavian Airlines
18 Mar - 02 Apr	TAP	direct

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

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 Lisbon in March from $357

Return flights