Lisbon (LIS) to San Francisco (SFO) cheap flight deal from $549 USD in economy class

AAAmerican Airlines

AYFinnair

Portela Airport

Lisbon, Portugal

SFO

San Francisco International Airport

San Francisco, United States

$740 USD

-26%$549 USD

Verified Sep 20, 2025 at 7:32 PM

September 2025

Today

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20$1,607 21$1,290 22$1,038 23$786 24$778 25$898 26$984 27$975 28$1,157 29$1,157 30$1,020 1$811 2$816 3$658 4$1,020 5$998

Extremely Rare Availability

3% of dates checked are available within 10% of the lowest price

Saturday, September 20th, 2025

8 round-trip options

Returning

Thu, Sep 25, 2025•5 Day Trip

$1,613 USD

Google Flights

Returning

Fri, Sep 26, 2025•6 Day Trip

$2,267 USD

Google Flights

Returning

Sat, Sep 27, 2025•7 Day Trip

$1,733 USD

Google Flights

Returning

Sun, Sep 28, 2025•8 Day Trip

$1,909 USD

Google Flights

Returning

Mon, Sep 29, 2025•9 Day Trip

$1,672 USD

Google Flights

Returning

Tue, Sep 30, 2025•10 Day Trip

$1,607 USD

Google Flights

Returning

Wed, Oct 1, 2025•11 Day Trip

$5,353 USD

Google Flights

Returning

Thu, Oct 2, 2025•12 Day Trip

$2,272 USD

Google Flights