AirHint found the following cheapest return flights from Lisbon (LIS) to Boston (BOS) in August 2026 (see full year).
Return flights
| 16 Aug - 31 Aug | TAP | ||
| 17 Aug - 22 Aug | TAP | ||
| 16 Aug - 31 Aug | Virgin Atlantic | direct |
Also check the deals for one-way flights from Lisbon to Boston in August.
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