Cheapest return flights from Houston to Lisbon in May from $588

AirHint found the following cheapest return flights from Houston (HOU) to Lisbon (LIS) in May 2026 (see full year).

Return flights

06 May - 12 May British Airways
12 May - 21 May Delta
02 May - 16 May Air France
03 May - 05 May Spirit Airlines
19 May - 26 May Lufthansa
20 May - 27 May KLM
13 May - 16 May Spirit Airlines
23 May - 02 Jun Spirit Airlines
24 May - 31 May Spirit Airlines
23 May - 30 May Spirit Airlines
22 May - 29 May Spirit Airlines

Also check the deals for one-way flights from Houston to Lisbon in May.

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