San Francisco (SFO) to Lisbon (LIS) cheap flight deal from $508 USD in economy class

AAAmerican Airlines

AYFinnair

San Francisco International Airport

San Francisco, United States

LIS

Portela Airport

Lisbon, Portugal

$786 USD

-35%$508 USD

Verified Sep 20, 2025 at 7:32 PM

October 2025

Today

Mon

Tue

Wed

Thu

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Sun

29$723 30$723 1$865 2$959 3$864 4$923 5$878 6$722 7$878 8$755 9$815 10$930 11$783 12$723 13$808 14$808 15$793 16$825 17$718 18$573 19$637 20$635 21$635 22$635 23$560 24$577 25$525 26$510 27$510 28$510 29$583 30$683 31$783 1 2

Limited Availability

14% of dates checked are available within 10% of the lowest price

Monday, October 6th, 2025

10 round-trip options

Returning

Sat, Oct 11, 2025•5 Day Trip

$1,773 USD

Google Flights

Returning

Sun, Oct 12, 2025•6 Day Trip

$1,213 USD

Google Flights

Returning

Mon, Oct 13, 2025•7 Day Trip

$1,063 USD

Google Flights

Returning

Tue, Oct 14, 2025•8 Day Trip

$856 USD

Google Flights

Returning

Wed, Oct 15, 2025•9 Day Trip

$794 USD

Google Flights

Returning

Thu, Oct 16, 2025•10 Day Trip

$722 USD

Google Flights

Returning

Fri, Oct 17, 2025•11 Day Trip

$910 USD

Google Flights

Returning

Sat, Oct 18, 2025•12 Day Trip

$1,187 USD

Google Flights

Returning

Sun, Oct 19, 2025•13 Day Trip

$1,032 USD

Google Flights

Returning

Mon, Oct 20, 2025•14 Day Trip

$993 USD

Google Flights