$359+ Cheap flights from San Francisco (SFO) to Portugal
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Cheapest flights from San Francisco to PortugalExplore the most affordable flight options available from San Francisco to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from San Francisco to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This FlightHub deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/174:45 pm
SFO
- FNC
2 stops40h 05m
Scandinavian Airlines
Sat 9/265:40 pm
FNC
- SFO
2 stops29h 00m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$717
This oojo deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/24:35 pm
SFO
- FAO
1 stop23h 15m
TAP AIR PORTUGAL
Thu 11/124:30 pm
FAO
- SFO
1 stop31h 35m
TAP AIR PORTUGAL
Deal found 6/16![TAP AIR PORTUGAL logo]()
$725
This Trip.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:45 pm
SFO
- OPO
1 stop34h 20m
Scandinavian Airlines
Sun 11/155:35 pm
OPO
- SFO
1 stop29h 15m
Scandinavian Airlines
Deal found 6/15![Scandinavian Airlines logo]()
$732
This FlightHub deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/74:45 pm
SFO
- OPO
1 stop34h 20m
Scandinavian Airlines
Mon 11/1611:55 am
OPO
- SFO
1 stop34h 55m
Scandinavian Airlines
Deal found 6/16![Scandinavian Airlines logo]()
$745
This oojo deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:15 pm
SFO
- PDL
1 stop16h 20m
TAP AIR PORTUGAL
Tue 12/87:25 pm
PDL
- SFO
1 stop26h 20m
TAP AIR PORTUGAL
Deal found 6/14![TAP AIR PORTUGAL logo]()
$749
This oojo deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:30 pm
SFO
- FAO
1 stop16h 50m
TAP AIR PORTUGAL
Sun 10/254:30 pm
FAO
- SFO
1 stop30h 15m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$750
This oojo deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/234:35 pm
SFO
- FAO
1 stop23h 15m
TAP AIR PORTUGAL
Thu 10/16:05 am
FAO
- SFO
1 stop16h 25m
TAP AIR PORTUGAL
Deal found 6/15![TAP AIR PORTUGAL logo]()
$752
This oojo deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm
SFO
- FAO
1 stop20h 15m
TAP AIR PORTUGAL
Thu 10/156:05 am
FAO
- SFO
1 stop16h 25m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$775
This FlightHub deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:35 pm
SFO
- TER
1 stop23h 40m
TAP AIR PORTUGAL
Mon 9/287:05 am
TER
- SFO
1 stop37h 30m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$776
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:04 am
SFO
- OPO
2 stops20h 41m
American Airlines
Thu 10/298:20 am
OPO
- SFO
2 stops21h 31m
American Airlines
Deal found 6/15![American Airlines logo]()
$781
This Iberia deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:55 pm
SFO
- OPO
1 stop18h 05m
Iberia
Tue 9/2912:25 pm
OPO
- SFO
2 stops20h 34m
Iberia
Deal found 6/18![Iberia logo]()
$794
This oojo deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:45 pm
SFO
- OPO
1 stop18h 45m
Scandinavian Airlines
Wed 8/1911:50 am
OPO
- SFO
1 stop34h 50m
Scandinavian Airlines
Deal found 6/18![Scandinavian Airlines logo]()
$796
Best flights from San Francisco to PortugalDiscover carefully curated flight deals from San Francisco to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from San Francisco to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:10 pm
SFO
- OPO
1 stop18h 20m
Delta
Wed 8/195:00 am
OPO
- SFO
1 stop14h 45m
Delta
Deal found 6/14![Delta logo]()
$837
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:10 am
SFO
- OPO
1 stop16h 45m
United Airlines
Wed 8/1911:20 am
OPO
- SFO
1 stop32h 01m
United Airlines
Deal found 6/14![United Airlines logo]()
$846
This KLM deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:31 am
SFO
- FAO
2 stops19h 19m
KLM
Thu 11/122:40 pm
FAO
- SFO
1 stop29h 05m
KLM
Deal found 6/16![KLM logo]()
$877
This United deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:55 pm
SFO
- OPO
1 stop25h 50m
Multiple Airlines
Sun 10/1811:20 am
OPO
- SFO
2 stops36h 01m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$896
This Scandinavian Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/164:45 pm
SFO
- OPO
1 stop34h 20m
Scandinavian Airlines
Thu 11/195:40 am
OPO
- SFO
2 stops41h 10m
Scandinavian Airlines
Deal found 6/13![Scandinavian Airlines logo]()
$907
This Finnair deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:31 am
SFO
- LIS
2 stops28h 54m
Finnair
Sat 10/176:35 am
LIS
- SFO
2 stops26h 08m
Finnair
Deal found 6/13![Finnair logo]()
$938
This FlightHub deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/157:35 pm
SFO
- FAO
1 stop30h 50m
TAP AIR PORTUGAL
Sun 8/306:10 pm
FAO
- SFO
1 stop27h 55m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$949
This British Airways deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/54:35 pm
SFO
- LIS
1 stop22h 30m
British Airways
Tue 7/1411:05 am
LIS
- SFO
1 stop21h 54m
British Airways
Deal found 6/16![British Airways logo]()
$1,139
This Mytrip deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:30 pm
SFO
- PDL
2 stops29h 50m
Air Canada
Wed 8/199:35 am
PDL
- SFO
1 stop18h 27m
Air Canada
Deal found 6/13![Air Canada logo]()
$1,164
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1112:35 am
SFO
- OPO
2 stops22h 25m
United Airlines
Thu 8/276:00 am
OPO
- SFO
2 stops22h 17m
United Airlines
Deal found 6/18![United Airlines logo]()
$850
This KLM deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:35 pm
SFO
- OPO
1 stop27h 50m
KLM
Sat 10/105:00 am
OPO
- SFO
1 stop14h 45m
KLM
Deal found 6/17![KLM logo]()
$911
This Finnair deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:35 pm
SFO
- LIS
1 stop22h 30m
Multiple Airlines
Sat 10/176:35 am
LIS
- SFO
2 stops26h 08m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$944
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:00 am
SFO
- OPO
2 stops18h 30m
Delta
Sat 10/105:00 am
OPO
- SFO
2 stops19h 02m
Delta
Deal found 6/17![Delta logo]()
$971
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/47:15 pm
SFO
- PDL
1 stop21h 30m
TAP AIR PORTUGAL
Tue 12/87:25 pm
PDL
- SFO
1 stop26h 20m
TAP AIR PORTUGAL
Deal found 6/16![TAP AIR PORTUGAL logo]()
$972
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:39 pm
SFO
- OPO
1 stop23h 21m
United Airlines
Thu 9/176:00 am
OPO
- SFO
1 stop21h 50m
United Airlines
Deal found 6/15![United Airlines logo]()
$900
This KLM deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/232:20 pm
SFO
- FAO
2 stops21h 10m
KLM
Thu 10/18:30 am
FAO
- SFO
1 stop35h 15m
KLM
Deal found 6/15![KLM logo]()
$915
This Cheapflightsfares deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:30 pm
SFO
- LIS
Nonstop11h 15m
TAP AIR PORTUGAL
Sat 10/171:10 pm
LIS
- SFO
Nonstop12h 25m
TAP AIR PORTUGAL
Deal found 6/13![TAP AIR PORTUGAL logo]()
$975
This Delta deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:55 am
SFO
- LIS
2 stops21h 20m
Delta
Thu 7/235:35 am
LIS
- SFO
2 stops22h 31m
Delta
Deal found 6/14![Delta logo]()
$988
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/264:20 pm
SFO
- OPO
1 stop33h 25m
United Airlines
Tue 8/1112:15 pm
OPO
- SFO
1 stop31h 06m
United Airlines
Deal found 6/16![United Airlines logo]()
$901
This KLM deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:05 pm
SFO
- OPO
1 stop22h 55m
KLM
Sun 10/114:20 pm
OPO
- SFO
1 stop27h 25m
KLM
Deal found 6/16![KLM logo]()
$957
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:35 pm
SFO
- PDL
1 stop19h 15m
TAP AIR PORTUGAL
Wed 8/193:30 pm
PDL
- SFO
1 stop30h 00m
TAP AIR PORTUGAL
Deal found 6/13![TAP AIR PORTUGAL logo]()
$987
This Mytrip deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:05 pm
SFO
- PDL
2 stops32h 30m
Multiple Airlines
Wed 8/2610:45 am
PDL
- SFO
3 stops32h 15m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$1,119
This Delta deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:30 pm
SFO
- OPO
2 stops20h 50m
Delta
Fri 7/3112:45 pm
OPO
- SFO
1 stop20h 08m
Delta
Deal found 6/13![Delta logo]()
$1,050
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:10 am
SFO
- FNC
2 stops15h 55m
United Airlines
Wed 7/159:40 am
FNC
- SFO
2 stops23h 35m
United Airlines
Deal found 6/18![United Airlines logo]()
$959
This British Airways deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:30 pm
SFO
- FNC
1 stop32h 00m
British Airways
Wed 7/2912:10 pm
FNC
- SFO
2 stops29h 11m
British Airways
Deal found 6/16![British Airways logo]()
$1,278
This KLM deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:45 pm
SFO
- FAO
1 stop33h 25m
KLM
Wed 9/308:50 am
FAO
- SFO
2 stops19h 48m
KLM
Deal found 6/18![KLM logo]()
$972
This Gotogate deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:30 pm
SFO
- SJZ
2 stops41h 05m
Multiple Airlines
Mon 9/73:35 pm
SJZ
- SFO
2 stops54h 00m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$1,131
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:10 am
SFO
- LIS
1 stop17h 10m
United Airlines
Sun 9/66:15 am
LIS
- SFO
1 stop20h 45m
United Airlines
Deal found 6/17![United Airlines logo]()
$966
This KLM deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:45 pm
SFO
- FNC
1 stop35h 50m
KLM
Mon 9/710:20 am
FNC
- SFO
1 stop33h 25m
KLM
Deal found 6/17![KLM logo]()
$989
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:35 pm
SFO
- PDL
1 stop36h 25m
TAP AIR PORTUGAL
Wed 9/307:30 pm
PDL
- SFO
1 stop26h 00m
TAP AIR PORTUGAL
Deal found 6/17![TAP AIR PORTUGAL logo]()
$1,107
Last-minute flights from San Francisco to PortugalDiscover last-minute flight deals from San Francisco to Portugal. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Portugal. Data last updated June 18, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/128:10 am
SFO
- OPO
1 stop14h 40m
Air Canada
Thu 7/2311:50 am
OPO
- SFO
1 stop31h 31m
Air Canada
Deal found 6/14![Air Canada logo]()
$891
This Gotogate deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/128:10 am
SFO
- OPO
1 stop14h 40m
Multiple Airlines
Wed 7/2211:20 am
OPO
- SFO
1 stop32h 01m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$893
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1211:10 am
SFO
- OPO
1 stop35h 50m
United Airlines
Wed 7/2211:20 am
OPO
- SFO
2 stops32h 18m
United Airlines
Deal found 6/14![United Airlines logo]()
$898
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:34 pm
SFO
- LIS
2 stops30h 46m
United Airlines
Tue 7/215:05 am
LIS
- SFO
2 stops34h 20m
United Airlines
Deal found 6/14![United Airlines logo]()
$927
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:55 am
SFO
- LIS
2 stops21h 20m
Delta
Thu 7/235:35 am
LIS
- SFO
2 stops22h 31m
Delta
Deal found 6/15![Delta logo]()
$928
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:05 pm
SFO
- OPO
1 stop22h 55m
Delta
Wed 7/2212:40 pm
OPO
- SFO
1 stop18h 15m
Delta
Deal found 6/17![Delta logo]()
$919
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:10 pm
SFO
- OPO
1 stop17h 50m
Delta
Tue 8/412:25 pm
OPO
- SFO
2 stops31h 30m
Delta
Deal found 6/15![Delta logo]()
$923
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1810:35 pm
SFO
- OPO
2 stops24h 20m
United Airlines
Tue 7/289:00 am
OPO
- SFO
2 stops24h 15m
United Airlines
Deal found 6/18![United Airlines logo]()
$924
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:59 pm
SFO
- OPO
1 stop25h 46m
United Airlines
Wed 8/1211:20 am
OPO
- SFO
1 stop32h 01m
United Airlines
Deal found 6/16![United Airlines logo]()
$901
This Air France deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/283:05 pm
SFO
- OPO
1 stop23h 00m
Multiple Airlines
Tue 8/184:20 pm
OPO
- SFO
1 stop27h 25m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$837
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:10 am
SFO
- OPO
1 stop14h 50m
United Airlines
Wed 8/1211:20 am
OPO
- SFO
1 stop32h 01m
United Airlines
Deal found 6/16![United Airlines logo]()
$911
This Justfly.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:51 pm
SFO
- OPO
2 stops26h 09m
Air Canada
Tue 8/1812:15 pm
OPO
- SFO
2 stops29h 13m
Air Canada
Deal found 6/18![Air Canada logo]()
$912
One-way flights from San Francisco to PortugalSearch for one-way flight options from San Francisco to Portugal. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from San Francisco to Portugal. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Orbitz deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am
SFO
- OPO
2 stops17h 40m
Iberia
Deal found 6/17![Iberia logo]()
$359
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:30 pm
SFO
- OPO
1 stop16h 35m
British Airways
Deal found 6/18![British Airways logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:48 pm
SFO
- OPO
3 stops35h 32m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$371
This Priceline deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:55 pm
SFO
- OPO
1 stop18h 05m
Iberia
Deal found 6/18![Iberia logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:40 pm
SFO
- OPO
2 stops29h 10m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$373
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:50 am
SFO
- OPO
2 stops20h 10m
American Airlines
Deal found 6/18![American Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:40 pm
SFO
- OPO
2 stops29h 10m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:05 pm
SFO
- OPO
3 stops43h 15m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:15 pm
SFO
- OPO
1 stop28h 30m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:00 am
SFO
- OPO
3 stops31h 20m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:40 pm
SFO
- OPO
2 stops31h 45m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$394
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:17 pm
SFO
- FAO
3 stops43h 58m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$414
Find flight deals from San Francisco to Portugal
Keep the following information in mind while searching for San Francisco to Portugal flight deals. Data was last updated June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $717 (FlightHub) |
One-way from | $359 (Orbitz) |
Popular in | June |
Cheapest in | February |
Average price | $1,254 |
Good round-trip deal | $726 or less |
Good one-way deal | $479 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from San Francisco to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Mon 8/3
8:10 pm-10:30 pm
1 stop18h 20m
Porto
Wed 8/19
5:00 am-11:45 am
1 stop14h 45m
$837
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Mon 8/3
6:10 am-6:55 am
1 stop16h 45m
Porto
Wed 8/19
11:20 am-11:21 am
1 stop32h 01m
$846
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Tue 8/11
12:35 am-7:00 am
2 stops22h 25m
Porto
Thu 8/27
6:00 am-8:17 pm
2 stops22h 17m
$850
San FranciscoFaro
SFO - FAO
SFOFAO
San Francisco
Mon 11/2
10:31 am-1:50 pm
2 stops19h 19m
Faro
Thu 11/12
2:40 pm-11:45 am
1 stop29h 05m
$877
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Sat 10/10
11:55 pm-9:45 am
1 stop25h 50m
Porto
Sun 10/18
11:20 am-3:21 pm
2 stops36h 01m
$896
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Mon 8/31
11:39 pm-7:00 am
1 stop23h 21m
Porto
Thu 9/17
6:00 am-7:50 pm
1 stop21h 50m
$900
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Sun 7/26
4:20 pm-9:45 am
1 stop33h 25m
Porto
Tue 8/11
12:15 pm-11:21 am
1 stop31h 06m
$901
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Mon 11/16
4:45 pm-11:05 am
1 stop34h 20m
Porto
Thu 11/19
5:40 am-2:50 pm
2 stops41h 10m
$907
San FranciscoPorto
SFO - OPO
SFOOPO
San Francisco
Sat 9/26
10:35 pm-10:25 am
1 stop27h 50m
Porto
Sat 10/10
5:00 am-11:45 am
1 stop14h 45m
$911
San FranciscoFaro
SFO - FAO
SFOFAO
San Francisco
Wed 9/23
2:20 pm-7:30 pm
2 stops21h 10m
Faro
Thu 10/1
8:30 am-11:45 am
1 stop35h 15m
$915
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Francisco to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from San Francisco with our price prediction graph.
SFO-OPO
SFO-FNC
SFO-FAO
SFO-TER
SFO-LIS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Portugal
SFO-PT0
SFO-OPO
SFO-FNC
SFO-FAO
SFO-TER
What is the cheapest month to book a flight from San Francisco to Portugal?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Portugal (average of $409). Flying from San Francisco to Portugal in May is currently the most expensive (average of $3,722). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to PT?
Find hourly flight availability from San Francisco to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2026.
When flying from San Francisco to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from San Francisco to Portugal delayed?
About 18% of weekly flights between San Francisco and Portugal have experienced delays in the past year, with the average delay time being 125 minutes.
What is the most punctual flight time for San Francisco to Portugal flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Francisco to Portugal flights?
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 18% of flights being delayed.
How far ahead should I book a flight from San Francisco to Portugal?
The best time to book flights from San Francisco to Portugal is 58 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated June 18, 2026.
Read through reviews of airlines operating flights from San Francisco to Portugal, such as Delta,United Airlines, andTAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.8
Boarding
8.1
Overall
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for San Francisco to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Portugal by cabin class
Find flights from San Francisco to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Portugal flights
Browse other San Francisco and Portugal flight options. Last updated on June 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Francisco to Portugal flights
Consider these flights traveling from San Francisco to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top 10 airlines flying from San Francisco to Portugal
Discover the top 10 airlines that operate flights from San Francisco to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$222 | Average$775 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$309 | Average$945 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$429 | Average$662 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$431 | Average$914 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$440 | Average$1,127 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$474 | Average$827 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$488 | Average$884 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$489 | Average$904 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$495 | Average$731 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$505 | Average$750 | FlexibilityNo cancel fee | On-time70% |