AirHint found the following cheapest return flights from Lisbon (LIS) to Boston (BOS) in April 2026 (see full year).
Return flights
| 17 Apr - 26 Apr | TAP | direct | |
| 02 Apr - 11 Apr | TAP | direct | |
| 29 Apr - 03 May | TAP | direct | |
| 20 Apr - 02 May | TAP | direct | |
| 11 Apr - 20 Apr | LEVEL | ||
| 17 Apr - 25 Apr | TAP | direct | |
| 11 Apr - 20 Apr | TAP | direct |
Also check the deals for one-way flights from Lisbon to Boston in April.
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