Cheapest return flights from Houston to Porto in July from $747

AirHint found the following cheapest return flights from Houston (IAH) to Porto (OPO) in July 2026 (see full year).

Return flights

22 Jul - 29 Jul United
29 Jul - 05 Aug United
20 Jul - 27 Jul British Airways
28 Jul - 04 Aug British Airways
19 Jul - 26 Jul United
21 Jul - 28 Jul United
30 Jul - 06 Aug British Airways
23 Jul - 30 Jul United
26 Jul - 02 Aug British Airways
16 Jul - 23 Jul British Airways
18 Jul - 25 Jul United
15 Jul - 22 Jul Air France
17 Jul - 24 Jul British Airways
25 Jul - 01 Aug British Airways
27 Jul - 03 Aug British Airways
14 Jul - 21 Jul Frontier Airlines
31 Jul - 07 Aug Air France

Also check the deals for one-way flights from Houston to Porto in July.

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