Cheapest return flights from San Francisco to Lisbon in September from $588

Best time to book flights for San Francisco (SFO) to Lisbon (LIS) flights at AirHint

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

Return flights

25 Sep - 23 Oct Delta
30 Sep - 07 Oct Air Canada
29 Sep - 06 Oct Air Canada
25 Sep - 24 Oct Air Canada
30 Sep - 18 Oct Iberia
30 Sep - 11 Oct British Airways
18 Sep - 21 Sep British Airways
30 Sep - 12 Oct British Airways
22 Sep - 29 Sep United
01 Sep - 11 Sep Virgin Atlantic
10 Sep - 17 Sep Air France
02 Sep - 09 Sep United
30 Sep - 07 Oct TAP direct
03 Sep - 24 Sep Delta
30 Sep - 18 Oct TAP direct
03 Sep - 10 Sep British Airways
25 Sep - 23 Oct TAP direct
03 Sep - 24 Sep TAP direct
12 Sep - 20 Sep American Airlines
06 Sep - 10 Sep Air Canada

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

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.

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