Cheapest return flights from San Diego to Lisbon in May from $664

Best time to book flights for San Diego (SAN) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from San Diego (SAN) to Lisbon (LIS) in May 2025 (see full year).

Return flights

03 May - 10 May Lufthansa
08 May - 21 May KLM
07 May - 22 May Delta
02 May - 12 May Spirit Airlines
13 May - 20 May United
30 May - 09 Jun Porter Airlines (Canada) Ltd
06 May - 03 Jun Frontier Airlines
03 May - 14 May Alaska Airlines
27 May - 03 Jun United
29 May - 05 Jun United
25 May - 01 Jun United
17 May - 24 May United
31 May - 07 Jun United
21 May - 28 May United
23 May - 30 May United

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon