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$271+ 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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
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 septiembre 17, 2025.

Round-trip from

$468
(oojo)

One-way from

$271
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$811

Good round-trip deal

$419 or less

Good one-way deal

$268 or less
From San Francisco to Portugal
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One-way flight from San Francisco to Portugal
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High demand for flights, 0% potential price rise
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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 September 2025
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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 septiembre 17, 2025.

This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/14:40 pmSFO - FAO
2 stops33h 05mScandinavian Airlines
mié. 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 9/15$477
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/74:40 pmSFO - FAO
1 stop15h 40mScandinavian Airlines
sáb. 11/155:10 pmFAO - SFO
1 stop29h 25mScandinavian Airlines
Deal found 9/14$485
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/148:30 amSFO - OPO
2 stops22h 30mMultiple Airlines
mar. 10/2110:50 pmOPO - SFO
2 stops29h 01mMultiple Airlines
Deal found 9/15$489
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/68:30 amSFO - OPO
2 stops22h 35mMultiple Airlines
mar. 10/2110:50 pmOPO - SFO
2 stops29h 01mMultiple Airlines
Deal found 9/15$498
This Scandinavian Airlines deal was found by Cheapflights users on 9/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/64:40 pmSFO - OPO
1 stop16h 15mScandinavian Airlines
vie. 11/215:35 pmOPO - SFO
1 stop29h 00mScandinavian Airlines
Deal found 9/15$499
This lol.travel deal was found by Cheapflights users on 9/17. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/77:10 pmSFO - FAO
1 stop20h 40mTAP AIR PORTUGAL
sáb. 11/226:05 amFAO - SFO
1 stop16h 40mTAP AIR PORTUGAL
Deal found 9/17$514
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/78:40 amSFO - OPO
2 stops22h 20mMultiple Airlines
mar. 10/1410:50 pmOPO - SFO
2 stops25h 20mMultiple Airlines
Deal found 9/17$515
This Vliegwinkel deal was found by Cheapflights users on 9/16. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/61:55 pmSFO - FNC
1 stop19h 15mKLM
vie. 11/216:00 pmFNC - SFO
1 stop25h 50mKLM
Deal found 9/16$518
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/295:35 pmSFO - FAO
1 stop15h 10mTAP AIR PORTUGAL
mié. 11/196:05 amFAO - SFO
1 stop16h 25mTAP AIR PORTUGAL
Deal found 9/15$525
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/144:20 pmSFO - OPO
1 stop13h 45mTAP AIR PORTUGAL
mié. 10/227:00 amOPO - SFO
1 stop15h 35mTAP AIR PORTUGAL
Deal found 9/15$526
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/84:35 pmSFO - FAO
1 stop23h 15mTAP AIR PORTUGAL
vie. 11/146:05 amFAO - SFO
1 stop18h 00mTAP AIR PORTUGAL
Deal found 9/14$526
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/77:10 pmSFO - OPO
1 stop13h 50mTAP AIR PORTUGAL
mar. 11/188:00 pmOPO - SFO
1 stop26h 30mTAP AIR PORTUGAL
Deal found 9/15$528

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 septiembre 17, 2025.
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 FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

jue. 11/6

4:40 pm-4:55 pm

1 stop16h 15m

Porto

vie. 11/21

5:35 pm-2:35 pm

1 stop29h 00m

$499

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

vie. 11/7

7:10 pm-11:50 pm

1 stop20h 40m

Faro

sáb. 11/22

6:05 am-2:45 pm

1 stop16h 40m

$514

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

vie. 11/7

4:40 pm-10:05 am

2 stops33h 25m

Faro

sáb. 11/15

5:10 pm-2:35 pm

1 stop29h 25m

$515

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

jue. 11/6

10:35 am-5:10 pm

2 stops22h 35m

Funchal Madeira

vie. 11/21

6:00 pm-11:50 am

1 stop25h 50m

$520

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

mié. 3/11

1:00 pm-9:30 am

1 stop13h 30m

Porto

mié. 3/18

12:30 pm-9:00 pm

1 stop15h 30m

$526

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

sáb. 11/8

4:35 pm-11:50 pm

1 stop23h 15m

Faro

vie. 11/14

6:05 am-4:05 pm

1 stop18h 00m

$526

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

mar. 3/3

10:35 am-9:30 am

1 stop14h 55m

Porto

mié. 3/18

12:30 pm-9:00 pm

1 stop15h 30m

$530

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

mié. 11/19

10:30 am-9:30 am

2 stops15h 00m

Porto

mié. 11/26

12:30 pm-8:10 pm

1 stop15h 40m

$534

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

jue. 11/13

1:55 pm-5:10 pm

1 stop19h 15m

Funchal Madeira

jue. 11/20

10:20 am-11:50 am

1 stop33h 30m

$541

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

lun. 11/10

7:25 am-9:30 am

2 stops18h 05m

Porto

lun. 12/8

12:05 pm-4:30 pm

1 stop36h 25m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 $612). Flying from San Francisco to Portugal in June is currently the most expensive (average of $1,126). 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 septiembre 17, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 4% on flights from San Francisco to Portugal by exploring options for tickets in the morning.

What is the cheapest day to fly from San Francisco to Portugal?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Portugal flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 septiembre 17, 2025.
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
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
1,977 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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
7,367 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

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 39 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 15m. The distance from San Francisco to Portugal is about 5566 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 LEVEL ($288), TAP AIR PORTUGAL ($372), and Lufthansa ($377).

  • 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 - Faro.

  • 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 (88%), JetBlue (79%), TAP AIR PORTUGAL (79%).

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

    Looking at all options, your cheapest flight can be booked for $198. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $450 on average, our data indicates $1,686 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 $612). Flying from San Francisco to Portugal in June is currently the most expensive (average of $1,126). 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$725FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$363Average$999FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$409Average$706FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$496Average$821FlexibilityNo cancel feeOn-time72%
VuelingCheapest$532Average$848FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$550Average$1,114FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$555Average$820FlexibilityNo cancel feeOn-time70%
KLMCheapest$559Average$815FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$570Average$931FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$582Average$922FlexibilityNo cancel feeOn-time79%

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