Cheapest return flights from Oakland to Lisbon in May from $781

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

Return flights

01 May - 15 May British Airways
19 May - 02 Jun British Airways
21 May - 26 May British Airways
20 May - 26 May British Airways
16 May - 18 May British Airways
30 May - 14 Jun British Airways

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

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