AirHint found the following cheapest return flights from Houston (IAH) to Lisbon (LIS) in March 2026 (see full year).
Return flights
| 19 Mar - 28 Mar | KLM | ||
| 12 Mar - 21 Mar | KLM | ||
| 12 Mar - 22 Mar | KLM | ||
| 24 Mar - 05 Apr | Air France | ||
| 28 Mar - 08 Apr | Air Canada | ||
| 13 Mar - 22 Mar | KLM | ||
| 11 Mar - 15 Mar | Air France | ||
| 12 Mar - 14 Mar | Spirit Airlines |
Also check the deals for one-way flights from Houston to Lisbon in March.
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