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$294+ Cheap flights from San Francisco (SFO) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
nov. 28 — dic. 51
vie. 11/28
vie. 12/5
1 adult, Economy
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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 octubre 29, 2025.

This FlightHub deal was found by Cheapflights users on 10/27. 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.
lun. 12/14:40 pmSFO - FAO
2 stops33h 05mScandinavian Airlines
mié. 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 10/27$487
This FlightHub deal was found by Cheapflights users on 10/27. 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. 12/66:55 pmSFO - FAO
2 stops55h 05mScandinavian Airlines
sáb. 12/135:10 pmFAO - SFO
1 stop29h 25mScandinavian Airlines
Deal found 10/27$499
This KAYAK deal was found by Cheapflights users on 10/27. 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.
jue. 11/277:25 pmSFO - FAO
1 stop37h 45mSWISS
mié. 12/102:40 pmFAO - SFO
1 stop33h 50mSWISS
Deal found 10/27$510
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
mar. 12/27:25 pmSFO - OPO
1 stop31h 50mSWISS
mar. 12/97:25 pmOPO - SFO
1 stop29h 05mSWISS
Deal found 10/28$512
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
lun. 12/17:25 pmSFO - OPO
1 stop31h 50mSWISS
lun. 12/157:20 pmOPO - SFO
1 stop29h 10mSWISS
Deal found 10/28$513
This KAYAK deal was found by Cheapflights users on 10/27. 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.
vie. 11/284:40 pmSFO - FAO
1 stop15h 40mScandinavian Airlines
mié. 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 10/27$514
This Mytrip deal was found by Cheapflights users on 10/28. 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. 12/28:25 amSFO - OPO
2 stops19h 15mMultiple Airlines
mar. 12/97:25 pmOPO - SFO
1 stop29h 05mMultiple Airlines
Deal found 10/28$520
This Scandinavian Airlines deal was found by Cheapflights users on 10/27. 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.
lun. 11/244:40 pmSFO - FAO
2 stops33h 05mScandinavian Airlines
mié. 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 10/27$521
This KAYAK deal was found by Cheapflights users on 10/28. 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.
jue. 11/274:40 pmSFO - FAO
2 stops41h 25mScandinavian Airlines
mié. 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 10/28$522
This Ticket deal was found by Cheapflights users on 10/28. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/281:55 pmSFO - FNC
1 stop19h 55mKLM
vie. 12/126:00 pmFNC - SFO
1 stop25h 50mKLM
Deal found 10/28$526
This Booking.com deal was found by Cheapflights users on 10/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/257:25 pmSFO - OPO
1 stop31h 50mSWISS
mar. 12/212:05 pmOPO - SFO
1 stop36h 25mSWISS
Deal found 10/26$529
This Travelocity deal was found by Cheapflights users on 10/26. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/258:25 amSFO - OPO
2 stops19h 40mMultiple Airlines
mar. 12/212:05 pmOPO - SFO
1 stop36h 25mMultiple Airlines
Deal found 10/26$530

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 octubre 29, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$447
(KAYAK)

One-way from

$294
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$746

Good round-trip deal

$441 or less

Good one-way deal

$239 or less
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
Search Deals
From San Francisco to Portugal
Search Deals
One-way flight from San Francisco to Portugal
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Portugal.
Search Deals
Price to beat on a one-way flight from San Francisco to Portugal.
Search Deals

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 octubre 29, 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 FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

sáb. 12/6

6:55 pm-10:00 am

2 stops55h 05m

Faro

sáb. 12/13

5:10 pm-2:35 pm

1 stop29h 25m

$500

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

lun. 12/1

4:40 pm-9:45 am

2 stops33h 05m

Faro

mié. 12/10

10:35 am-2:35 pm

2 stops36h 00m

$510

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

sáb. 12/6

7:25 pm-6:35 pm

1 stop15h 10m

Porto

vie. 12/12

7:20 pm-4:30 pm

1 stop29h 10m

$513

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

vie. 11/28

1:55 pm-5:50 pm

1 stop19h 55m

Funchal Madeira

vie. 12/12

6:00 pm-11:50 am

1 stop25h 50m

$526

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

mié. 1/14

3:40 pm-10:25 am

1 stop34h 45m

Porto

vie. 1/23

11:15 am-11:50 am

1 stop32h 35m

$527

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

jue. 1/15

7:25 pm-11:10 am

1 stop31h 45m

Porto

jue. 1/29

12:05 pm-4:30 pm

1 stop36h 25m

$529

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

sáb. 2/14

7:25 pm-6:35 pm

1 stop15h 10m

Porto

dom. 2/22

7:25 pm-4:30 pm

1 stop29h 05m

$529

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

mar. 2/10

11:56 pm-11:40 am

2 stops27h 44m

Faro

mar. 2/24

7:00 pm-4:30 pm

1 stop29h 30m

$530

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

lun. 12/1

1:55 pm-6:55 pm

1 stop21h 00m

Faro

mié. 12/10

6:55 pm-11:50 am

1 stop24h 55m

$530

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

mié. 1/14

12:10 pm-6:15 pm

2 stops22h 05m

Faro

vie. 1/30

8:10 pm-11:50 am

1 stop23h 40m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 56 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, November is the cheapest month in which you can book a flight from San Francisco to Portugal (average of $507). Flying from San Francisco to Portugal in June is currently the most expensive (average of $782). 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 octubre 29, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 35% on flights from San Francisco to Portugal by exploring options for tickets in the evening.

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 Friday afternoons when fares are most often at their lowest. Monday 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 octubre 29, 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
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,999 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
10,374 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
2,037 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,487 reviews
Delta
7.9
Good
7,992 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

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 36 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 15h 10m. 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 Scandinavian Airlines ($392), United Airlines ($403), and Lufthansa ($570).

  • 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 (92%), JetBlue (84%), TAP AIR PORTUGAL (84%).

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

    Looking at all options, your cheapest flight can be booked for $197. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $445 on average, our data indicates $1,598 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, November is the cheapest month in which you can book a flight from San Francisco to Portugal (average of $507). Flying from San Francisco to Portugal in June is currently the most expensive (average of $782). 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 octubre 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$742FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$409Average$695FlexibilityNo cancel feeOn-time77%
IberiaCheapest$469Average$1,003FlexibilityNo cancel feeOn-time77%
KLMCheapest$497Average$774FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$531Average$813FlexibilityNo cancel feeOn-time70%
VuelingCheapest$532Average$869FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$550Average$1,127FlexibilityNo cancel feeOn-time76%
SWISSCheapest$553Average$885FlexibilityNo cancel feeOn-time79%
Air FranceCheapest$555Average$763FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$555Average$821FlexibilityNo cancel feeOn-time72%

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