$371+ Cheap flights from Portugal to San Francisco (SFO)
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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Cheapest flights from Portugal to San FranciscoExplore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
Explore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.
This FlightHub deal was found by Cheapflights users on 3/20. 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 5/234:25 pm
LIS
- SFO
1 stop30h 15m
Scandinavian Airlines
Thu 5/284:45 pm
SFO
- LIS
1 stop19h 40m
Scandinavian Airlines
Deal found 3/20![Scandinavian Airlines logo]()
$671
This Trip.com deal was found by Cheapflights users on 3/21. 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.
Fri 5/89:15 pm
LIS
- SFO
1 stop25h 25m
Scandinavian Airlines
Thu 5/284:45 pm
SFO
- LIS
1 stop19h 40m
Scandinavian Airlines
Deal found 3/21![Scandinavian Airlines logo]()
$679
This Iberia deal was found by Cheapflights users on 3/18. 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.
Wed 4/159:15 pm
LIS
- SFO
1 stop28h 40m
Iberia
Thu 4/237:40 pm
SFO
- LIS
1 stop16h 55m
Iberia
Deal found 3/18![Iberia logo]()
$706
This Flighttix deal was found by Cheapflights users on 3/20. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:00 am
OPO
- SFO
1 stop17h 25m
Multiple Airlines
Wed 5/276:30 am
SFO
- OPO
2 stops20h 50m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$741
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/165:55 am
LIS
- SFO
1 stop18h 20m
SWISS
Thu 4/307:35 pm
SFO
- LIS
1 stop19h 50m
SWISS
Deal found 3/20![SWISS logo]()
$756
This United Airlines deal was found by Cheapflights users on 3/20. 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.
Thu 5/146:00 am
OPO
- SFO
1 stop22h 00m
United Airlines
Wed 5/2710:35 pm
SFO
- OPO
1 stop24h 20m
United Airlines
Deal found 3/20![United Airlines logo]()
$756
This Mytrip deal was found by Cheapflights users on 3/19. 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 4/1610:40 pm
LIS
- SFO
2 stops22h 35m
Multiple Airlines
Sat 4/253:15 pm
SFO
- LIS
2 stops20h 10m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Thu 4/25:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Thu 4/167:00 am
SFO
- LIS
1 stop17h 20m
United Airlines
Deal found 3/17![United Airlines logo]()
$763
This United Airlines deal was found by Cheapflights users on 3/20. 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 9/85:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Tue 9/226:05 am
SFO
- LIS
2 stops20h 25m
United Airlines
Deal found 3/20![United Airlines logo]()
$764
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/145:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Sat 4/256:40 am
SFO
- LIS
2 stops17h 40m
United Airlines
Deal found 3/18![United Airlines logo]()
$765
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 4/235:05 am
LIS
- SFO
1 stop22h 55m
United Airlines
Wed 5/69:05 pm
SFO
- LIS
1 stop17h 40m
United Airlines
Deal found 3/18![United Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Wed 9/95:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Wed 9/301:10 pm
SFO
- LIS
1 stop13h 20m
United Airlines
Deal found 3/18![United Airlines logo]()
$767
Best flights from Portugal to San FranciscoDiscover carefully curated flight deals from Portugal to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from Portugal to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 5/146:00 am
OPO
- SFO
1 stop22h 00m
United Airlines
Wed 5/2711:59 pm
SFO
- OPO
1 stop22h 56m
United Airlines
Deal found 3/22![United Airlines logo]()
$760
This Lufthansa deal was found by Cheapflights users on 3/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
OPO
- SFO
1 stop22h 00m
Lufthansa
Tue 4/147:00 am
SFO
- OPO
1 stop18h 45m
Lufthansa
Deal found 3/18![Lufthansa logo]()
$780
This KLM deal was found by Cheapflights users on 3/18. 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.
Thu 4/235:00 am
OPO
- SFO
1 stop14h 45m
KLM
Sat 5/28:10 pm
SFO
- OPO
1 stop17h 50m
KLM
Deal found 3/18![KLM logo]()
$795
This Delta deal was found by Cheapflights users on 3/19. 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 4/235:00 am
OPO
- SFO
1 stop14h 45m
Delta
Sat 5/27:05 am
SFO
- OPO
2 stops17h 25m
Delta
Deal found 3/19![Delta logo]()
$797
This SWISS deal was found by Cheapflights users on 3/22. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:55 am
LIS
- SFO
1 stop18h 20m
SWISS
Thu 4/237:35 pm
SFO
- LIS
1 stop35h 10m
SWISS
Deal found 3/22![SWISS logo]()
$803
This KAYAK deal was found by Cheapflights users on 3/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/33:40 pm
FNC
- SFO
1 stop36h 20m
Multiple Airlines
Fri 4/179:05 pm
SFO
- FNC
2 stops34h 45m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$1,011
This Flysmarter deal was found by Cheapflights users on 3/19. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:05 am
FNC
- SFO
1 stop20h 45m
TAP AIR PORTUGAL
Fri 4/178:20 pm
SFO
- FNC
1 stop16h 45m
TAP AIR PORTUGAL
Deal found 3/19![TAP AIR PORTUGAL logo]()
$1,301
This Air Canada deal was found by Cheapflights users on 3/20. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:50 am
FNC
- SFO
2 stops23h 32m
Air Canada
Sun 4/268:10 am
SFO
- FNC
2 stops21h 05m
Air Canada
Deal found 3/20![Air Canada logo]()
$1,511
This United Airlines deal was found by Cheapflights users on 3/17. 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 9/95:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Wed 9/301:10 pm
SFO
- LIS
1 stop13h 20m
United Airlines
Deal found 3/17![United Airlines logo]()
$763
This Lufthansa deal was found by Cheapflights users on 3/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:25 am
LIS
- SFO
1 stop15h 50m
Lufthansa
Tue 5/269:05 pm
SFO
- LIS
1 stop17h 40m
Lufthansa
Deal found 3/21![Lufthansa logo]()
$796
This KLM deal was found by Cheapflights users on 3/18. 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.
Thu 4/27:10 pm
OPO
- SFO
1 stop24h 35m
KLM
Tue 4/141:10 pm
SFO
- OPO
2 stops18h 20m
KLM
Deal found 3/18![KLM logo]()
$803
This Delta deal was found by Cheapflights users on 3/20. 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 4/95:00 am
OPO
- SFO
2 stops21h 19m
Delta
Thu 4/232:57 pm
SFO
- OPO
2 stops23h 03m
Delta
Deal found 3/20![Delta logo]()
$825
This Iberia deal was found by Cheapflights users on 3/20. 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.
Wed 4/221:35 pm
FNC
- SFO
1 stop34h 35m
Iberia
Sun 4/2610:06 am
SFO
- FNC
2 stops18h 34m
Iberia
Deal found 3/20![Iberia logo]()
$1,686
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 4/307:25 am
LIS
- SFO
1 stop16h 00m
United Airlines
Wed 5/61:45 pm
SFO
- LIS
1 stop25h 00m
United Airlines
Deal found 3/22![United Airlines logo]()
$768
This SWISS deal was found by Cheapflights users on 3/20. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:35 pm
FNC
- SFO
2 stops33h 50m
SWISS
Mon 5/117:35 pm
SFO
- FNC
1 stop29h 55m
SWISS
Deal found 3/20![SWISS logo]()
$891
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 4/167:25 am
LIS
- SFO
1 stop16h 00m
United Airlines
Mon 4/201:45 pm
SFO
- LIS
1 stop25h 00m
United Airlines
Deal found 3/18![United Airlines logo]()
$768
This United Airlines deal was found by Cheapflights users on 3/19. 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 5/205:05 am
LIS
- SFO
1 stop18h 20m
United Airlines
Wed 5/275:05 am
SFO
- LIS
2 stops21h 25m
United Airlines
Deal found 3/19![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/255:05 am
LIS
- SFO
2 stops24h 15m
United Airlines
Fri 5/89:05 pm
SFO
- LIS
1 stop17h 40m
United Airlines
Deal found 3/18![United Airlines logo]()
$774
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Fri 5/156:00 am
OPO
- SFO
1 stop22h 00m
United Airlines
Mon 5/187:15 pm
SFO
- OPO
1 stop31h 55m
United Airlines
Deal found 3/17![United Airlines logo]()
$786
This United Airlines deal was found by Cheapflights users on 3/20. 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 4/1810:25 am
LIS
- SFO
2 stops22h 14m
United Airlines
Sat 4/2510:50 am
SFO
- LIS
1 stop15h 45m
United Airlines
Deal found 3/20![United Airlines logo]()
$797
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Thu 4/3010:25 am
LIS
- SFO
2 stops19h 09m
United Airlines
Thu 5/71:45 pm
SFO
- LIS
1 stop15h 55m
United Airlines
Deal found 3/19![United Airlines logo]()
$801
This United Airlines deal was found by Cheapflights users on 3/20. 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 5/46:00 am
OPO
- SFO
1 stop17h 25m
United Airlines
Mon 5/112:40 pm
SFO
- OPO
1 stop36h 30m
United Airlines
Deal found 3/20![United Airlines logo]()
$811
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 5/76:00 am
OPO
- SFO
1 stop17h 25m
United Airlines
Mon 5/112:40 pm
SFO
- OPO
1 stop36h 30m
United Airlines
Deal found 3/18![United Airlines logo]()
$812
Last-minute flights from Portugal to San FranciscoDiscover last-minute flight deals from Portugal to San Francisco. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to San Francisco. Data last updated March 23, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Thu 4/27:25 am
LIS
- SFO
1 stop16h 00m
United Airlines
Thu 4/167:00 am
SFO
- LIS
1 stop17h 20m
United Airlines
Deal found 3/17![United Airlines logo]()
$762
This Lufthansa deal was found by Cheapflights users on 3/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:00 am
OPO
- SFO
1 stop22h 00m
Lufthansa
Tue 4/147:00 am
SFO
- OPO
1 stop18h 45m
Lufthansa
Deal found 3/18![Lufthansa logo]()
$780
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/145:05 am
LIS
- SFO
1 stop18h 20m
United Airlines
Fri 4/2411:59 pm
SFO
- LIS
2 stops26h 36m
United Airlines
Deal found 3/18![United Airlines logo]()
$765
This Iberia deal was found by Cheapflights users on 3/18. 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.
Wed 4/159:15 pm
LIS
- SFO
1 stop28h 40m
Iberia
Thu 4/237:40 pm
SFO
- LIS
1 stop16h 55m
Iberia
Deal found 3/18![Iberia logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 3/20. 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.
Thu 4/165:55 am
LIS
- SFO
1 stop18h 20m
SWISS
Thu 4/307:35 pm
SFO
- LIS
1 stop19h 50m
SWISS
Deal found 3/20![SWISS logo]()
$756
This Mytrip deal was found by Cheapflights users on 3/19. 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 4/1610:40 pm
LIS
- SFO
2 stops22h 35m
Multiple Airlines
Sat 4/253:15 pm
SFO
- LIS
2 stops20h 10m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Thu 4/167:25 am
LIS
- SFO
1 stop16h 00m
United Airlines
Mon 4/201:45 pm
SFO
- LIS
1 stop25h 00m
United Airlines
Deal found 3/19![United Airlines logo]()
$768
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 4/235:05 am
LIS
- SFO
1 stop22h 55m
United Airlines
Wed 5/69:05 pm
SFO
- LIS
1 stop17h 40m
United Airlines
Deal found 3/18![United Airlines logo]()
$766
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Thu 4/237:25 am
LIS
- SFO
2 stops20h 12m
United Airlines
Sat 5/910:35 pm
SFO
- LIS
1 stop27h 55m
United Airlines
Deal found 3/18![United Airlines logo]()
$771
This KLM deal was found by Cheapflights users on 3/18. 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.
Thu 4/235:00 am
OPO
- SFO
1 stop14h 45m
KLM
Sat 5/28:10 pm
SFO
- OPO
1 stop17h 50m
KLM
Deal found 3/18![KLM logo]()
$795
This Delta deal was found by Cheapflights users on 3/19. 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 4/235:00 am
OPO
- SFO
1 stop14h 45m
Delta
Sat 5/28:10 pm
SFO
- OPO
1 stop17h 50m
Delta
Deal found 3/19![Delta logo]()
$797
This United Airlines deal was found by Cheapflights users on 3/19. 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 4/255:05 am
LIS
- SFO
2 stops22h 53m
United Airlines
Sat 5/25:30 am
SFO
- LIS
2 stops18h 50m
United Airlines
Deal found 3/19![United Airlines logo]()
$770
One-way flights from Portugal to San FranciscoSearch for one-way flight options from Portugal to San Francisco. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from Portugal to San Francisco. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Fri 5/2210:30 pm
OPO
- SFO
2 stops31h 25m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/273:00 pm
FNC
- SFO
3 stops53h 00m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 6/18:15 pm
OPO
- SFO
2 stops50h 20m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 6/67:15 am
OPO
- SFO
2 stops22h 40m
Multiple Airlines
Deal found 3/20![Multiple Airlines logo]()
$443
This Kiwi.com deal was found by Cheapflights users on 3/18. 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.
Fri 4/177:35 am
OPO
- SFO
2 stops42h 00m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 9/148:10 pm
OPO
- SFO
2 stops50h 25m
Multiple Airlines
Deal found 3/21![Multiple Airlines logo]()
$446
This American Airlines deal was found by Cheapflights users on 3/18. 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.
Tue 6/98:20 am
OPO
- SFO
1 stop15h 50m
American Airlines
Deal found 3/18![American Airlines logo]()
$487
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Fri 6/126:10 am
FNC
- SFO
1 stop22h 40m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$489
This Iberia deal was found by Cheapflights users on 3/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:20 am
OPO
- SFO
2 stops23h 48m
Iberia
Deal found 3/17![Iberia logo]()
$490
This American Airlines deal was found by Cheapflights users on 3/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/228:40 pm
OPO
- SFO
1 stop27h 40m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Thu 4/308:45 am
LIS
- SFO
2 stops21h 10m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 3/22. 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.
Tue 5/126:35 am
LIS
- SFO
1 stop17h 35m
American Airlines
Deal found 3/22![American Airlines logo]()
$515
Find flight deals from Portugal to San Francisco
Keep the following information in mind while searching for Portugal to San Francisco flight deals. Data was last updated March 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $671 (FlightHub) |
One-way from | $371 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $873 |
Good one-way deal | $854 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal to San Francisco 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 March 23, 2026.
Use the filters below to find and compare flights from Portugal to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 5/14
6:00 am-8:00 pm
1 stop22h 00m
San Francisco
Wed 5/27
11:59 pm-6:55 am
1 stop22h 56m
$760
Quickest round-trip
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Wed 9/9
5:05 am-12:40 pm
1 stop15h 35m
San Francisco
Wed 9/30
1:10 pm-10:30 am
1 stop13h 20m
$763
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 4/30
7:25 am-3:25 pm
1 stop16h 00m
San Francisco
Wed 5/6
1:45 pm-10:45 pm
1 stop25h 00m
$768
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 4/16
7:25 am-3:25 pm
1 stop16h 00m
San Francisco
Mon 4/20
1:45 pm-10:45 pm
1 stop25h 00m
$768
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Wed 5/20
5:05 am-3:25 pm
1 stop18h 20m
San Francisco
Wed 5/27
5:05 am-10:30 am
2 stops21h 25m
$770
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Sat 4/25
5:05 am-9:20 pm
2 stops24h 15m
San Francisco
Fri 5/8
9:05 pm-10:45 pm
1 stop17h 40m
$774
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 4/2
6:00 am-8:00 pm
1 stop22h 00m
San Francisco
Tue 4/14
7:00 am-9:45 am
1 stop18h 45m
$780
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 5/15
6:00 am-8:00 pm
1 stop22h 00m
San Francisco
Mon 5/18
7:15 pm-11:10 am
1 stop31h 55m
$786
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Thu 4/23
5:00 am-11:45 am
1 stop14h 45m
San Francisco
Sat 5/2
8:10 pm-10:00 pm
1 stop17h 50m
$795
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 5/21
7:25 am-3:15 pm
1 stop15h 50m
San Francisco
Tue 5/26
9:05 pm-10:45 pm
1 stop17h 40m
$796
Showing 1-10 of 48 resultsSorted by cheapest first
Best time to book a flight from Portugal to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Portugal with our price prediction graph.
OPO-SFO
FNC-SFO
LIS-SFO
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 Portugal to San Francisco
PT0-SFO
OPO-SFO
FNC-SFO
LIS-SFO
What is the cheapest month to book a flight from Portugal to San Francisco?
Currently, March is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $558). Flying from Portugal to San Francisco in August is currently the most expensive (average of $679). 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 PT to SFO?
Find hourly flight availability from Portugal to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 23, 2026.
When flying from Portugal to San Francisco, 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 Portugal to San Francisco delayed?
About 13% of weekly flights between Portugal and San Francisco have experienced delays in the past year, with the average delay time being 121 minutes.
What is the most punctual flight time for Portugal to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Portugal to San Francisco flights?
Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 13% of flights being delayed.
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated March 23, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andTAP AIR PORTUGAL from Portugal to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Crew
8.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Portugal to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Livermore
Roseville
Watsonville
Rancho Cordova
San Bruno
San Ramon
Sunnyvale
Vacaville
San Carlos
Redwood City
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove
Rohnert Park
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Portugal and San Francisco flights
Browse other Portugal and San Francisco flight options. Last updated on March 23, 2026.
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Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 23, 2026.
Portugal to San Francisco flights
Consider these flights traveling from Portugal to San Francisco.
Top 7 airlines flying from Portugal to San Francisco
Discover the top 7 airlines that operate flights from Portugal to San Francisco. 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 March 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$604 | Average$873 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$625 | Average$766 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$642 | Average$755 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$657 | Average$829 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$688 | Average$844 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$708 | Average$857 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$764 | Average$896 | FlexibilityNo cancel fee | On-time69% |