AirHint found the following cheapest return flights from Singapore (SIN) to Lisbon (LIS) in July 2026 (see full year).
Return flights
| 23 Jul - 30 Jul | Finnair | ||
| 04 Jul - 08 Jul | Turkish Airlines | ||
| 25 Jul - 04 Aug | TAP |
Also check the deals for one-way flights from Singapore to Lisbon in July.
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