AirHint found the following cheapest one-way flights from Houston (HOU) to Porto (OPO) in July 2026 (see full year).
One-Way flights
| 20 Jul | Delta | ||
| 19 Jul | Air France | ||
| 18 Jul | Delta | ||
| 16 Jul | Air France | ||
| 17 Jul | Delta | ||
| 12 Jul | British Airways | ||
| 13 Jul | British Airways | ||
| 14 Jul | British Airways | ||
| 11 Jul | British Airways | ||
| 08 Jul | Delta |
Also check the deals for return flights from Houston to Porto in July.
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