AirHint found the following cheapest return flights from Boston (BOS) to Lisbon (LIS) in July 2026 (see full year).
Return flights
| 27 Jul - 19 Aug | LEVEL | ||
| 21 Jul - 28 Jul | LEVEL | ||
| 19 Jul - 01 Aug | TAP | ||
| 01 Jul - 13 Jul | LEVEL | ||
| 13 Jul - 04 Aug | LEVEL | ||
| 21 Jul - 28 Jul | TAP | direct | |
| 13 Jul - 04 Aug | TAP | direct | |
| 01 Jul - 13 Jul | TAP | direct |
Also check the deals for one-way flights from Boston to Lisbon in July.
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