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$230+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap 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 January 15, 2026.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$510
(KAYAK)

One-way from

$230
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$637

Good round-trip deal

$572 or less

Good one-way deal

$350 or less
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
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From San Francisco to Portugal
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One-way flight from San Francisco to Portugal
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Highest demand for flights based on searches. 16% potential increase in price ($155 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from San Francisco to Portugal.
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Price to beat on a one-way flight from San Francisco to Portugal.
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Find flight deals from San Francisco to Portugal

Cheapest flights from San Francisco to Portugal
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 January 15, 2026.

This Air Canada deal was found by Cheapflights users on 1/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:52 pm
SFO
-
LIS
2 stops25h 28m
Air Canada
Wed 4/2211:25 am
LIS
-
SFO
1 stop17h 56m
Air Canada
Deal found 1/13$504
This oojo deal was found by Cheapflights users on 1/12. 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.
Thu 4/164:31 pm
SFO
-
LIS
2 stops33h 34m
British Airways
Tue 4/281:40 pm
LIS
-
SFO
1 stop35h 50m
British Airways
Deal found 1/12$505
This Delta deal was found by Cheapflights users on 1/13. 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.
Thu 2/193:40 pm
SFO
-
LIS
1 stop17h 50m
Delta
Fri 3/610:00 am
LIS
-
SFO
1 stop16h 38m
Delta
Deal found 1/13$506
This oojo deal was found by Cheapflights users on 1/13. 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.
Fri 4/174:31 pm
SFO
-
LIS
2 stops22h 39m
British Airways
Fri 4/2411:05 am
LIS
-
SFO
2 stops20h 49m
British Airways
Deal found 1/13$507
This oojo deal was found by Cheapflights users on 1/12. 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.
Thu 4/164:31 pm
SFO
-
LIS
2 stops33h 34m
British Airways
Thu 4/236:45 pm
LIS
-
SFO
2 stops35h 19m
British Airways
Deal found 1/12$508
This Cheapflightsfares deal was found by Cheapflights users on 1/13. 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.
Wed 4/17:20 pm
SFO
-
LIS
1 stop19h 55m
British Airways
Wed 4/84:25 pm
LIS
-
SFO
1 stop29h 25m
British Airways
Deal found 1/13$509
This KAYAK deal was found by Cheapflights users on 1/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:45 pm
SFO
-
OPO
1 stop31h 55m
Scandinavian Airlines
Fri 5/85:55 pm
OPO
-
SFO
1 stop28h 45m
Scandinavian Airlines
Deal found 1/13$510
This British Airways deal was found by Cheapflights users on 1/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:35 pm
SFO
-
LIS
1 stop15h 00m
British Airways
Thu 4/237:20 am
LIS
-
SFO
1 stop18h 20m
British Airways
Deal found 1/13$510
This KAYAK deal was found by Cheapflights users on 1/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/167:25 pm
SFO
-
LIS
1 stop35h 10m
SWISS
Mon 2/232:20 pm
LIS
-
SFO
2 stops34h 10m
SWISS
Deal found 1/13$511
This Delta deal was found by Cheapflights users on 1/13. 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.
Sun 4/128:55 am
SFO
-
LIS
2 stops17h 50m
Delta
Mon 4/2012:45 pm
LIS
-
SFO
2 stops27h 08m
Delta
Deal found 1/13$512
This KAYAK deal was found by Cheapflights users on 1/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:25 pm
SFO
-
LIS
1 stop32h 20m
SWISS
Tue 3/33:25 pm
LIS
-
SFO
1 stop33h 05m
SWISS
Deal found 1/13$513
This United Airlines deal was found by Cheapflights users on 1/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2111:20 pm
SFO
-
LIS
1 stop26h 55m
United Airlines
Mon 3/911:55 am
LIS
-
SFO
1 stop16h 25m
United Airlines
Deal found 1/13$514

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 January 15, 2026.
Use the filters below to find and compare flights from San Francisco to Portugal that are best for you.

Fly from

San Francisco

Fly to

Portugal

Route

Depart

Return

Price

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 3/25

2:33 pm-9:50 pm

2 stops24h 17m

Lisbon Humberto Delgado

Wed 4/1

7:20 am-10:32 pm

2 stops23h 12m

$505

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 2/19

9:25 pm-11:30 pm

1 stop18h 05m

Lisbon Humberto Delgado

Fri 3/6

6:10 am-2:50 pm

1 stop16h 40m

$506

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sat 2/14

8:40 pm-9:50 am

1 stop29h 10m

Lisbon Humberto Delgado

Mon 3/2

6:35 pm-3:00 pm

1 stop28h 25m

$510

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sat 3/7

4:40 pm-5:10 pm

1 stop16h 30m

Lisbon Humberto Delgado

Sun 3/22

6:00 pm-3:35 pm

1 stop28h 35m

$518

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 2/26

3:40 pm-3:10 pm

1 stop15h 30m

Lisbon Humberto Delgado

Wed 3/4

5:30 am-4:09 pm

2 stops18h 39m

$518

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 4/23

9:05 pm-10:45 pm

1 stop17h 40m

Lisbon Humberto Delgado

Fri 5/1

1:00 pm-12:19 am

2 stops19h 19m

$518

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 3/19

6:30 pm-10:05 am

1 stop32h 35m

Lisbon Humberto Delgado

Tue 3/31

7:10 am-11:44 pm

2 stops24h 34m

$520

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 3/9

4:03 pm-5:30 pm

2 stops18h 27m

Lisbon Humberto Delgado

Mon 3/16

5:30 am-8:00 pm

2 stops21h 30m

$522

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 2/11

5:30 pm-5:40 pm

1 stop16h 10m

Lisbon Humberto Delgado

Wed 2/25

7:05 am-3:00 pm

1 stop15h 55m

$523

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Fri 4/10

1:28 pm-11:10 pm

2 stops25h 42m

Lisbon Humberto Delgado

Fri 4/17

7:20 am-10:04 pm

2 stops22h 44m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 60 results
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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.
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

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 $465). Flying from San Francisco to Portugal in June is currently the most expensive (average of $761). 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 January 15, 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 24% of weekly flights between San Francisco and Portugal have experienced delays in the past year, with the average delay time being 115 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?

Monday tends to have the lowest number of delays on this route, whereas Friday 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 24% of flights being delayed.

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 January 15, 2026.
Read through reviews of airlines operating flights from San Francisco to Portugal, such as Delta, United Airlines, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,049 reviews
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,163 reviews
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
10,622 reviews
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
TAP AIR PORTUGAL
7.1
Good
2,121 reviews
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,676 reviews
Delta
7.9
Good
8,049 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.9

Comfort

7.9

Food

7.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What airport do you fly from for flights from San Francisco to Portugal?

    For a flight from San Francisco to Portugal, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city.

  • How popular is this San Francisco to Portugal flight route?

    This flight path from San Francisco to Portugal was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Francisco to Portugal?

    Departing from San Francisco to Portugal will take you 16h 30m. The distance from San Francisco to Portugal is about 5664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from San Francisco to Portugal one-way?

    The cheapest airlines for a one-way flight from San Francisco to Portugal are British Airways ($255), Iberia ($256), and LEVEL ($308).

  • What are the most popular routes from San Francisco to Portugal?

    The most popular flight routes from San Francisco to Portugal are San Francisco - Lisbon Humberto Delgado, San Francisco - Porto and San Francisco - Lajes.

  • What are the most reliable airlines from San Francisco to Portugal?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Portugal on time: Etihad Airways (71%), JetBlue (71%), TAP AIR PORTUGAL (71%).

  • What are the cheapest flights from San Francisco to Portugal?

    Looking at all options, your cheapest flight can be booked for $326. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $430 on average, our data indicates $1,672 when flying from San Francisco to Portugal.

  • Can I find deals for flights from San Francisco to Portugal that include hotel bookings?

    Yes. In addition to deals on San Francisco to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Portugal.

  • Can I find deals for business class flights from San Francisco to Portugal?

    Yes. Cheapflights offers flight deals from San Francisco to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $465). Flying from San Francisco to Portugal in June is currently the most expensive (average of $761). 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.

See more FAQs

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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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$291Average$718FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$309Average$958FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$409Average$698FlexibilityNo cancel feeOn-time77%
KLMCheapest$489Average$749FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$492Average$1,099FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$495Average$730FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$512Average$745FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$512Average$1,106FlexibilityNo cancel feeOn-time69%
SWISSCheapest$528Average$876FlexibilityNo cancel feeOn-time79%
VuelingCheapest$532Average$879FlexibilityNo cancel feeOn-time88%

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