$391+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Aug 19 — Aug 261
Round-trip
1 adult, Economy
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Find cheap flights from Portugal to San Francisco with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 July 20, 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 July 20, 2026.
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:45 pm
LIS
- SFO
2 stops21h 37m
Multiple Airlines
Wed 11/2512:00 pm
SFO
- LIS
2 stops18h 50m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$593
This Cheapflightsfares deal was found by Cheapflights users on 7/18. 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.
Tue 10/66:45 pm
LIS
- SFO
1 stop27h 05m
Multiple Airlines
Tue 12/18:35 pm
SFO
- LIS
1 stop17h 10m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$604
This Iberia deal was found by Cheapflights users on 7/18. 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 9/156:35 am
LIS
- SFO
1 stop17h 45m
Multiple Airlines
Tue 9/294:35 pm
SFO
- LIS
1 stop15h 00m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$605
This American Airlines deal was found by Cheapflights users on 7/18. 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.
Thu 12/38:20 am
LIS
- SFO
2 stops22h 08m
American Airlines
Mon 12/78:35 pm
SFO
- LIS
1 stop34h 10m
American Airlines
Deal found 7/18![American Airlines logo]()
$608
This American Airlines deal was found by Cheapflights users on 7/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 am
LIS
- SFO
1 stop18h 04m
American Airlines
Wed 9/94:35 pm
SFO
- LIS
1 stop17h 20m
American Airlines
Deal found 7/19![American Airlines logo]()
$609
This Iberia deal was found by Cheapflights users on 7/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:30 pm
LIS
- SFO
2 stops19h 41m
Multiple Airlines
Wed 9/94:35 pm
SFO
- LIS
1 stop15h 05m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$610
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 am
LIS
- SFO
1 stop19h 54m
British Airways
Thu 9/107:30 pm
SFO
- LIS
1 stop19h 35m
British Airways
Deal found 7/19![British Airways logo]()
$611
This British Airways deal was found by Cheapflights users on 7/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:05 am
LIS
- SFO
1 stop15h 46m
British Airways
Wed 10/214:35 pm
SFO
- LIS
1 stop15h 05m
British Airways
Deal found 7/17![British Airways logo]()
$612
This American Airlines deal was found by Cheapflights users on 7/17. 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.
Wed 9/98:55 am
LIS
- SFO
2 stops20h 21m
American Airlines
Wed 9/307:30 pm
SFO
- LIS
1 stop19h 45m
American Airlines
Deal found 7/17![American Airlines logo]()
$613
This Iberia deal was found by Cheapflights users on 7/18. 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.
Mon 8/318:20 am
OPO
- SFO
2 stops22h 19m
Multiple Airlines
Sun 9/134:35 pm
SFO
- OPO
1 stop20h 00m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$613
This Rumbo deal was found by Cheapflights users on 7/17. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:25 am
LIS
- SFO
2 stops22h 14m
Multiple Airlines
Mon 9/77:30 pm
SFO
- LIS
1 stop19h 40m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$615
This Iberia deal was found by Cheapflights users on 7/17. 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.
Sat 11/218:40 pm
OPO
- SFO
2 stops21h 42m
Iberia
Sun 11/295:25 pm
SFO
- OPO
2 stops18h 35m
Iberia
Deal found 7/17![Iberia logo]()
$615
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 July 20, 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 July 20, 2026.
This British Airways deal was found by Cheapflights users on 7/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:05 am
LIS
- SFO
1 stop16h 19m
British Airways
Mon 12/78:35 pm
SFO
- LIS
1 stop17h 20m
British Airways
Deal found 7/17![British Airways logo]()
$611
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Tue 12/226:00 am
OPO
- SFO
1 stop18h 05m
United Airlines
Fri 1/15:00 am
SFO
- OPO
2 stops20h 30m
United Airlines
Deal found 7/19![United Airlines logo]()
$644
This SWISS deal was found by Cheapflights users on 7/15. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:55 am
LIS
- SFO
2 stops21h 58m
SWISS
Mon 9/77:35 pm
SFO
- LIS
1 stop19h 50m
SWISS
Deal found 7/15![SWISS logo]()
$665
This Delta deal was found by Cheapflights users on 7/19. 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.
Sun 11/15:00 am
OPO
- SFO
1 stop14h 45m
Delta
Fri 1/153:10 pm
SFO
- OPO
1 stop22h 50m
Delta
Deal found 7/19![Delta logo]()
$673
This TAP AIR PORTUGAL deal was found by Cheapflights users on 7/15. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:10 pm
FNC
- SFO
1 stop29h 55m
TAP AIR PORTUGAL
Mon 11/234:35 pm
SFO
- FNC
1 stop24h 25m
TAP AIR PORTUGAL
Deal found 7/15![TAP AIR PORTUGAL logo]()
$1,002
This Air Canada deal was found by Cheapflights users on 7/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:50 am
FNC
- SFO
2 stops39h 50m
Air Canada
Mon 11/238:25 am
SFO
- FNC
2 stops24h 45m
Air Canada
Deal found 7/19![Air Canada logo]()
$1,103
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/77:00 am
LIS
- SFO
1 stop15h 55m
British Airways
Sat 3/611:29 am
SFO
- LIS
2 stops19h 21m
British Airways
Deal found 7/19![British Airways logo]()
$618
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Fri 9/256:00 am
OPO
- SFO
1 stop17h 20m
United Airlines
Tue 10/611:10 am
SFO
- OPO
1 stop35h 50m
United Airlines
Deal found 7/16![United Airlines logo]()
$646
This SWISS deal was found by Cheapflights users on 7/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:55 am
LIS
- SFO
2 stops21h 00m
SWISS
Sun 10/258:25 pm
SFO
- LIS
1 stop35h 10m
SWISS
Deal found 7/19![SWISS logo]()
$666
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:05 am
LIS
- SFO
1 stop15h 51m
British Airways
Mon 8/317:00 am
SFO
- LIS
1 stop18h 05m
British Airways
Deal found 7/19![British Airways logo]()
$620
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Sun 10/116:00 am
OPO
- SFO
2 stops25h 59m
United Airlines
Mon 10/192:55 pm
SFO
- OPO
1 stop34h 50m
United Airlines
Deal found 7/17![United Airlines logo]()
$651
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Fri 9/185:05 am
LIS
- SFO
1 stop18h 15m
United Airlines
Tue 9/2912:45 pm
SFO
- LIS
1 stop13h 45m
United Airlines
Deal found 7/18![United Airlines logo]()
$652
This SWISS deal was found by Cheapflights users on 7/18. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:00 am
FNC
- SFO
1 stop38h 15m
SWISS
Tue 9/87:45 pm
SFO
- FNC
2 stops29h 40m
SWISS
Deal found 7/18![SWISS logo]()
$726
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/185:05 am
LIS
- SFO
1 stop18h 15m
United Airlines
Tue 11/1710:50 am
SFO
- LIS
1 stop15h 15m
United Airlines
Deal found 7/17![United Airlines logo]()
$653
This United Airlines deal was found by Cheapflights users on 7/18. 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 9/16:00 am
OPO
- SFO
2 stops22h 17m
United Airlines
Tue 9/86:38 pm
SFO
- OPO
2 stops28h 22m
United Airlines
Deal found 7/18![United Airlines logo]()
$653
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Thu 8/275:05 am
LIS
- SFO
1 stop15h 35m
United Airlines
Wed 9/910:35 pm
SFO
- LIS
1 stop27h 55m
United Airlines
Deal found 7/14![United Airlines logo]()
$656
This United Airlines deal was found by Cheapflights users on 7/18. 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 11/512:35 pm
OPO
- SFO
1 stop32h 00m
United Airlines
Mon 11/912:00 pm
SFO
- OPO
1 stop13h 30m
United Airlines
Deal found 7/18![United Airlines logo]()
$664
This United Airlines deal was found by Cheapflights users on 7/17. 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 11/512:35 pm
OPO
- SFO
1 stop32h 00m
United Airlines
Thu 11/125:00 am
SFO
- OPO
2 stops20h 30m
United Airlines
Deal found 7/17![United Airlines logo]()
$665
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Tue 8/119:00 am
OPO
- SFO
2 stops21h 55m
United Airlines
Fri 8/2111:59 pm
SFO
- OPO
1 stop22h 56m
United Airlines
Deal found 7/19![United Airlines logo]()
$673
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/1212:35 pm
OPO
- SFO
2 stops19h 55m
United Airlines
Wed 8/1911:59 pm
SFO
- OPO
1 stop22h 56m
United Airlines
Deal found 7/19![United Airlines logo]()
$673
This United Airlines deal was found by Cheapflights users on 7/19. 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 9/29:40 am
FNC
- SFO
1 stop17h 34m
United Airlines
Wed 9/910:15 pm
SFO
- FNC
1 stop25h 50m
United Airlines
Deal found 7/19![United Airlines logo]()
$677
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Fri 8/79:40 am
FNC
- SFO
1 stop17h 48m
United Airlines
Mon 8/1711:59 pm
SFO
- FNC
1 stop24h 06m
United Airlines
Deal found 7/18![United Airlines logo]()
$677
This United Airlines deal was found by Cheapflights users on 7/18. 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.
Fri 8/79:40 am
FNC
- SFO
1 stop21h 19m
United Airlines
Tue 8/188:15 am
SFO
- FNC
1 stop15h 50m
United Airlines
Deal found 7/18![United Airlines logo]()
$677
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Tue 8/1110:25 am
LIS
- SFO
2 stops20h 30m
United Airlines
Tue 8/256:00 am
SFO
- LIS
2 stops20h 30m
United Airlines
Deal found 7/14![United Airlines logo]()
$683
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Sat 12/1912:20 pm
LIS
- SFO
2 stops26h 45m
United Airlines
Mon 1/45:00 am
SFO
- LIS
2 stops21h 20m
United Airlines
Deal found 7/16![United Airlines logo]()
$685
Last-minute flights from Portugal to San FranciscoDiscover last-minute flight deals from Portugal to San Francisco. Data last updated July 20, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to San Francisco. Data last updated July 20, 2026 and is based on user searches.
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:45 pm
LIS
- SFO
1 stop27h 05m
British Airways
Mon 8/316:00 am
SFO
- LIS
1 stop19h 05m
British Airways
Deal found 7/19![British Airways logo]()
$627
This British Airways deal was found by Cheapflights users on 7/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:10 pm
LIS
- SFO
1 stop28h 40m
British Airways
Sun 8/309:51 am
SFO
- LIS
1 stop15h 14m
British Airways
Deal found 7/18![British Airways logo]()
$628
This American Airlines deal was found by Cheapflights users on 7/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:05 am
LIS
- SFO
1 stop15h 51m
American Airlines
Mon 8/316:00 am
SFO
- LIS
1 stop19h 05m
American Airlines
Deal found 7/19![American Airlines logo]()
$619
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:05 am
LIS
- SFO
1 stop15h 51m
British Airways
Mon 8/317:00 am
SFO
- LIS
1 stop18h 05m
British Airways
Deal found 7/19![British Airways logo]()
$620
This American Airlines deal was found by Cheapflights users on 7/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 am
LIS
- SFO
1 stop18h 04m
American Airlines
Wed 9/94:35 pm
SFO
- LIS
1 stop17h 20m
American Airlines
Deal found 7/19![American Airlines logo]()
$609
This Iberia deal was found by Cheapflights users on 7/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2712:30 pm
LIS
- SFO
2 stops19h 41m
Multiple Airlines
Wed 9/94:35 pm
SFO
- LIS
1 stop15h 05m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$610
This British Airways deal was found by Cheapflights users on 7/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 am
LIS
- SFO
1 stop19h 54m
British Airways
Thu 9/107:30 pm
SFO
- LIS
1 stop19h 35m
British Airways
Deal found 7/19![British Airways logo]()
$611
This British Airways deal was found by Cheapflights users on 7/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 am
LIS
- SFO
1 stop19h 54m
British Airways
Wed 9/91:24 pm
SFO
- LIS
2 stops18h 16m
British Airways
Deal found 7/17![British Airways logo]()
$612
This American Airlines deal was found by Cheapflights users on 7/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:25 pm
OPO
- SFO
2 stops20h 29m
American Airlines
Sat 9/121:27 pm
SFO
- OPO
2 stops18h 33m
American Airlines
Deal found 7/19![American Airlines logo]()
$625
This Flighttix deal was found by Cheapflights users on 7/17. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:25 pm
OPO
- SFO
1 stop35h 55m
Multiple Airlines
Sun 9/135:55 pm
SFO
- OPO
1 stop14h 05m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$633
This Iberia deal was found by Cheapflights users on 7/18. 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.
Mon 8/318:20 am
OPO
- SFO
2 stops22h 19m
Multiple Airlines
Sun 9/134:35 pm
SFO
- OPO
1 stop20h 00m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$613
This Rumbo deal was found by Cheapflights users on 7/17. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:25 am
LIS
- SFO
2 stops22h 14m
Multiple Airlines
Mon 9/77:30 pm
SFO
- LIS
1 stop19h 40m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$615
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 July 20, 2026.
Search for one-way flight options from Portugal to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:45 pm
OPO
- SFO
3 stops46h 35m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 9/1410:40 pm
OPO
- SFO
2 stops47h 55m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$402
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 9/97:10 am
OPO
- SFO
2 stops39h 20m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$413
This Iberia deal was found by Cheapflights users on 7/16. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:25 pm
OPO
- SFO
2 stops20h 34m
Iberia
Deal found 7/16![Iberia logo]()
$432
This Iberia deal was found by Cheapflights users on 7/18. 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.
Fri 9/258:20 am
OPO
- SFO
2 stops23h 08m
Iberia
Deal found 7/18![Iberia logo]()
$433
This Expedia deal was found by Cheapflights users on 7/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:40 pm
OPO
- SFO
1 stop27h 40m
Iberia
Deal found 7/16![Iberia logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:25 pm
OPO
- SFO
3 stops37h 55m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$439
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 11/309:20 pm
FNC
- SFO
3 stops49h 25m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 12/17:50 am
FNC
- SFO
2 stops36h 55m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$534
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Sun 11/292:30 pm
FNC
- SFO
2 stops30h 15m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$566
This Kiwi.com deal was found by Cheapflights users on 7/18. 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.
Sat 11/284:25 pm
FNC
- SFO
2 stops31h 10m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$570
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 12/212:05 pm
FNC
- SFO
2 stops32h 40m
Multiple Airlines
Deal found 7/18![Multiple Airlines logo]()
$575
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 July 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $593 (British Airways) |
One-way from | $391 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $1,031 |
Good round-trip deal | $1,002 or less |
Good one-way deal | $813 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 July 20, 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
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 12/3
11:05 am-7:24 pm
1 stop16h 19m
San Francisco
Mon 12/7
8:35 pm-9:55 pm
1 stop17h 20m
$611
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 1/7
7:00 am-2:55 pm
1 stop15h 55m
San Francisco
Sat 3/6
11:29 am-2:50 pm
2 stops19h 21m
$618
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Tue 8/25
11:05 am-6:56 pm
1 stop15h 51m
San Francisco
Mon 8/31
7:00 am-9:05 am
1 stop18h 05m
$620
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Tue 12/22
6:00 am-4:05 pm
1 stop18h 05m
San Francisco
Fri 1/1
5:00 am-9:30 am
2 stops20h 30m
$644
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Fri 9/25
6:00 am-3:20 pm
1 stop17h 20m
San Francisco
Tue 10/6
11:10 am-7:00 am
1 stop35h 50m
$646
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Sun 10/11
6:00 am-11:59 pm
2 stops25h 59m
San Francisco
Mon 10/19
2:55 pm-9:45 am
1 stop34h 50m
$651
Quickest round-trip
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Fri 9/18
5:05 am-3:20 pm
1 stop18h 15m
San Francisco
Tue 9/29
12:45 pm-10:30 am
1 stop13h 45m
$652
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Fri 9/18
5:05 am-3:20 pm
1 stop18h 15m
San Francisco
Tue 11/17
10:50 am-10:05 am
1 stop15h 15m
$653
PortoSan Francisco
OPO - SFO
OPOSFO
Porto
Tue 9/1
6:00 am-8:17 pm
2 stops22h 17m
San Francisco
Tue 9/8
6:38 pm-7:00 am
2 stops28h 22m
$653
LisbonSan Francisco
LIS - SFO
LISSFO
Lisbon Humberto Delgado
Thu 8/27
5:05 am-12:40 pm
1 stop15h 35m
San Francisco
Wed 9/9
10:35 pm-10:30 am
1 stop27h 55m
$656
Showing 1-10 of 52 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.
LIS-SFO
OPO-SFO
FNC-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
LIS-SFO
OPO-SFO
FNC-SFO
What is the cheapest month to book a flight from Portugal to San Francisco?
Currently, November is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $775). Flying from Portugal to San Francisco in July is currently the most expensive (average of $1,003). 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 July 20, 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 19% of weekly flights between Portugal and San Francisco have experienced delays in the past year, with the average delay time being 110 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?
Monday tends to have the lowest number of delays on this route, whereas Tuesday 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 19% of flights being delayed.
How far ahead should I book a flight from Portugal to San Francisco?
The best time to book flights from Portugal to San Francisco is 90 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 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 July 20, 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.
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Overall
7.8
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
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
Fairfield
Roseville
Burlingame
Rancho Cordova
San Bruno
Cupertino
Emeryville
Newark
Watsonville
Hayward
Redwood City
San Carlos
San Ramon
Turlock
Vallejo
San Lorenzo
Davis
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Complete your trip
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Portugal and San Francisco flights
Browse other Portugal and San Francisco flight options. Last updated on July 20, 2026.
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Check out other popular destinations found by fellow travelers in 2026
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 July 20, 2026.
Portugal to San Francisco flights
Consider these flights traveling from Portugal to San Francisco.
Top 6 airlines flying from Portugal to San Francisco
Discover the top 6 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 July 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$561 | Average$824 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$642 | Average$802 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$688 | Average$903 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$708 | Average$900 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$732 | Average$895 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$743 | Average$881 | FlexibilityNo cancel fee | On-timeN/A |