Find Cheap Flights from San Francisco to Portugal

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from San Francisco to Portugal

(Round-trip)
Depart: Thu Mar 15 2018 Return: Sun Apr 15 2018 Trip spans 32 days
British Airways
British Airways
SFO
LIS
17h 15m
1 stop
LIS
SFO
19h 37m
1 stop
Depart: Wed Apr 4 2018 Return: Thu Apr 19 2018 Trip spans 16 days
Multiple Airlines
Multiple Airlines
SFO
LIS
14h 00m
1 stop
LIS
SFO
17h 45m
1 stop
Depart: Wed Nov 29 2017 Return: Sat Dec 2 2017 Trip spans 4 days
United
United
SFO
LIS
28h 30m
1 stop
LIS
SFO
35h 50m
1 stop
Depart: Tue Feb 20 2018 Return: Sun Mar 25 2018 Trip spans 33 days
Turkish Airlines
Turkish Airlines
SFO
LIS
32h 10m
1 stop
LIS
SFO
32h 45m
1 stop
Depart: Mon Apr 9 2018 Return: Tue Apr 24 2018 Trip spans 16 days
Multiple Airlines
Multiple Airlines
SFO
LIS
17h 15m
1 stop
LIS
SFO
17h 45m
1 stop
Depart: Fri Apr 13 2018 Return: Fri Apr 27 2018 Trip spans 15 days
Multiple Airlines
Multiple Airlines
SFO
LIS
19h 00m
1 stop
LIS
SFO
17h 45m
1 stop
Depart: Mon Apr 30 2018 Return: Mon May 7 2018 Trip spans 8 days
Multiple Airlines
Multiple Airlines
SFO
LIS
19h 00m
1 stop
LIS
SFO
17h 45m
1 stop
Depart: Sat Mar 17 2018 Return: Sat Mar 31 2018 Trip spans 15 days
British Airways
British Airways
SFO
LIS
22h 20m
1 stop
LIS
SFO
25h 05m
1 stop
Depart: Wed Nov 29 2017 Return: Mon Dec 11 2017 Trip spans 13 days
Turkish Airlines
Turkish Airlines
SFO
LIS
32h 10m
1 stop
LIS
SFO
32h 35m
1 stop
Depart: Thu Oct 26 2017 Return: Fri Nov 3 2017 Trip spans 9 days
British Airways
British Airways
SFO
LIS
17h 15m
1 stop
LIS
SFO
21h 09m
2 stops
Depart: Mon Jan 8 2018 Return: Wed Feb 21 2018 Trip spans 45 days
Turkish Airlines
Turkish Airlines
SFO
LIS
32h 10m
1 stop
LIS
SFO
32h 35m
1 stop
Depart: Fri Apr 20 2018 Return: Sun Apr 29 2018 Trip spans 10 days
Multiple Airlines
Multiple Airlines
SFO
LIS
26h 25m
1 stop
LIS
SFO
17h 50m
1 stop
Depart: Wed Feb 7 2018 Return: Thu Feb 15 2018 Trip spans 9 days
Turkish Airlines
Turkish Airlines
SFO
LIS
36h 50m
1 stop
LIS
SFO
32h 35m
1 stop
Depart: Mon Feb 26 2018 Return: Wed Mar 7 2018 Trip spans 10 days
British Airways
British Airways
SFO
LIS
17h 20m
1 stop
LIS
SFO
29h 05m
1 stop
Depart: Mon Nov 20 2017 Return: Mon Nov 27 2017 Trip spans 8 days
Multiple Airlines
Multiple Airlines
SFO
OPO
39h 45m
2 stops
OPO
SFO
41h 00m
2 stops
Depart: Tue Mar 6 2018 Return: Sun Mar 18 2018 Trip spans 12 days
Turkish Airlines
Turkish Airlines
SFO
LIS
36h 50m
1 stop
LIS
SFO
32h 35m
1 stop
Depart: Sat Apr 7 2018 Return: Sat Apr 14 2018 Trip spans 8 days
British Airways
British Airways
SFO
LIS
14h 00m
1 stop
LIS
SFO
19h 53m
2 stops
Depart: Thu Mar 15 2018 Return: Sun Apr 15 2018 Trip spans 32 days
Turkish Airlines
Turkish Airlines
SFO
LIS
32h 10m
1 stop
LIS
SFO
32h 45m
1 stop
Depart: Sat Nov 25 2017 Return: Mon Dec 18 2017 Trip spans 24 days
Multiple Airlines
Multiple Airlines
SFO
LIS
16h 10m
1 stop
LIS
SFO
19h 05m
1 stop
Depart: Fri Dec 1 2017 Return: Mon Dec 18 2017 Trip spans 18 days
Turkish Airlines
Turkish Airlines
SFO
LIS
36h 50m
1 stop
LIS
SFO
32h 35m
1 stop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

San Francisco
$518
Destination

Porto
$683
Lisbon
$518