Lisbon (LIS) to San Francisco (SFO) flight deal from $689 USD in economy class

ACAir Canada

LHLufthansa

LXSwiss International Air Lines

Portela Airport

Lisbon, Portugal

SFO

San Francisco International Airport

San Francisco, United States

$855 USD

-19%$689 USD

Verified Nov 23, 2025 at 1:17 PM

December 2025

Today

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1$1,157 2$750 3$750 4$743 5$739 6$745 7$750 8$737 9$716 10$716 11$830 12$878 13$755 14$689 15$742 16$729 17$750 18$745 19$746 20$776 21$750 22$723 23$716 24$716 25$743 26$716 27$978 28$1,093 29$1,222 30$1,376 31$1,392 1 2 3 4

Good Availability

51% of dates checked are available within 10% of the lowest price

Sunday, December 21st, 2025

10 round-trip options

Returning

Fri, Dec 26, 2025•5 Day Trip

$934 USD

Google Flights

Returning

Sat, Dec 27, 2025•6 Day Trip

$819 USD

Google Flights

Returning

Sun, Dec 28, 2025•7 Day Trip

$769 USD

Google Flights

Returning

Mon, Dec 29, 2025•8 Day Trip

$750 USD

Google Flights

Returning

Tue, Dec 30, 2025•9 Day Trip

$794 USD

Google Flights

Returning

Wed, Dec 31, 2025•10 Day Trip

$794 USD

Google Flights

Returning

Thu, Jan 1, 2026•11 Day Trip

$794 USD

Google Flights

Returning

Fri, Jan 2, 2026•12 Day Trip

$821 USD

Google Flights

Returning

Sat, Jan 3, 2026•13 Day Trip

$941 USD

Google Flights

Returning

Sun, Jan 4, 2026•14 Day Trip

$903 USD

Google Flights