AirHint found the following cheapest one-way flights from Houston (HOU) to Porto (OPO) in April 2026 (see full year).
One-Way flights
| 01 Apr | Air France | ||
| 15 Apr | Air France | ||
| 19 Apr | Air France | ||
| 20 Apr | Air France | ||
| 21 Apr | Air France | ||
| 22 Apr | Air France | ||
| 26 Apr | Air France | ||
| 27 Apr | Air France | ||
| 28 Apr | Air France | ||
| 07 Apr | British Airways |
Also check the deals for return flights from Houston to Porto in April.
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