AirHint found the following cheapest return flights from Houston (IAH) to Lisbon (LIS) in June 2026 (see full year).
Return flights
| 16 Jun - 21 Jun | WestJet | ||
| 15 Jun - 21 Jun | WestJet | ||
| 02 Jun - 30 Jun | Air Canada | ||
| 26 Jun - 04 Jul | British Airways |
Also check the deals for one-way flights from Houston to Lisbon in June.
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