AirHint found the following cheapest return flights from San Francisco (SFO) to Lisbon (LIS) in July 2025 (see full year).

Return flights

15 Jul - 26 Aug	United
16 Jul - 19 Aug	Delta
15 Jul - 22 Jul	Delta
16 Jul - 24 Jul	Delta
30 Jul - 12 Aug	Delta
29 Jul - 11 Aug	United
22 Jul - 29 Jul	United
21 Jul - 28 Jul	Delta
21 Jul - 11 Aug	Delta
16 Jul - 26 Jul	Delta
28 Jul - 05 Aug	Delta
27 Jul - 05 Aug	Delta
16 Jul - 21 Jul	Lufthansa
23 Jul - 31 Jul	Delta
09 Jul - 16 Jul	Scandinavian Airlines
17 Jul - 22 Jul	Delta
09 Jul - 15 Jul	Scandinavian Airlines
25 Jul - 01 Aug	Delta
30 Jul - 06 Aug	United
30 Jul - 11 Aug	Hawaiian Airlines

Also check the deals for one-way flights from San Francisco to Lisbon in July.

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

Cheapest return flights from San Francisco to Lisbon in July from 552€

Return flights