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$242+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/274:40 pmSFO - OPO
1 stop16h 15mScandinavian Airlines
Fri 12/125:35 pmOPO - SFO
1 stop29h 00mScandinavian Airlines
Deal found 11/18$510
This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:25 amSFO - LIS
1 stop16h 55mMultiple Airlines
Tue 12/167:45 amLIS - SFO
1 stop19h 50mMultiple Airlines
Deal found 11/18$512
This Air Canada deal was found by Cheapflights users on 11/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:30 amSFO - LIS
2 stops18h 25mAir Canada
Tue 12/2311:20 amLIS - SFO
2 stops34h 10mAir Canada
Deal found 11/18$513
This United Airlines deal was found by Cheapflights users on 11/17. 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.
Mon 11/1711:59 pmSFO - LIS
2 stops24h 11mUnited Airlines
Wed 12/311:55 amLIS - SFO
1 stop17h 06mUnited Airlines
Deal found 11/17$514
This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:00 pmSFO - LIS
1 stop13h 20mAir Canada
Thu 12/115:00 amLIS - SFO
2 stops24h 39mAir Canada
Deal found 11/18$515
This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:30 amSFO - LIS
2 stops17h 50mAir Canada
Mon 12/811:20 amLIS - SFO
2 stops42h 02mAir Canada
Deal found 11/18$516
This SWISS deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/297:25 pmSFO - LIS
1 stop35h 10mSWISS
Sat 1/1712:35 pmLIS - SFO
1 stop35h 55mSWISS
Deal found 11/20$517
This Air Canada deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:50 pmSFO - LIS
2 stops30h 30mAir Canada
Mon 1/1911:20 amLIS - SFO
2 stops38h 16mAir Canada
Deal found 11/20$518
This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/28:25 amSFO - LIS
1 stop16h 55mMultiple Airlines
Sun 12/73:25 pmLIS - SFO
1 stop33h 05mMultiple Airlines
Deal found 11/18$519
This Cheapflightsfares deal was found by Cheapflights users on 11/18. 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.
Wed 11/198:25 amSFO - LIS
1 stop17h 50mLufthansa
Tue 12/23:55 pmLIS - SFO
2 stops30h 55mLufthansa
Deal found 11/18$520
This Air Canada deal was found by Cheapflights users on 11/19. 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.
Mon 12/298:49 amSFO - LIS
2 stops18h 41mAir Canada
Tue 1/2011:20 amLIS - SFO
2 stops31h 14mAir Canada
Deal found 11/19$521
This Expedia deal was found by Cheapflights users on 11/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2310:40 pmSFO - LIS
2 stops26h 40mMultiple Airlines
Tue 12/23:55 pmLIS - SFO
2 stops33h 53mMultiple Airlines
Deal found 11/18$522

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 November 20, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$458
(Flightnetwork)

One-way from

$242
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$718

Good round-trip deal

$483 or less

Good one-way deal

$244 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 ($148 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 November 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 November 20, 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

Sun 1/11

4:40 pm-10:50 am

1 stop34h 10m

Faro

Sat 1/24

12:00 pm-2:35 pm

2 stops34h 35m

$463

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Fri 2/6

1:30 pm-7:55 pm

1 stop22h 25m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-3:55 pm

1 stop18h 55m

$512

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Fri 1/16

12:00 pm-9:20 am

1 stop13h 20m

Lisbon Humberto Delgado

Sun 1/25

5:00 am-3:55 pm

1 stop18h 55m

$533

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 1/25

7:00 am-4:05 pm

2 stops25h 05m

Lisbon Humberto Delgado

Sat 1/31

6:55 pm-8:29 pm

2 stops33h 34m

$535

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Fri 1/23

10:11 am-3:25 pm

2 stops21h 14m

Lisbon Humberto Delgado

Thu 1/29

6:30 am-12:47 am

2 stops26h 17m

$535

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 1/25

7:10 am-3:40 pm

2 stops24h 30m

Lisbon Humberto Delgado

Fri 1/30

6:55 am-11:04 pm

2 stops24h 09m

$535

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 11/30

8:30 am-9:20 am

1 stop16h 50m

Lisbon Humberto Delgado

Mon 12/8

5:00 am-12:40 pm

1 stop15h 40m

$538

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sat 2/14

11:59 pm-9:05 am

1 stop25h 06m

Lisbon Humberto Delgado

Sun 2/22

11:05 am-10:59 pm

1 stop19h 54m

$538

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Sat 2/21

1:55 pm-9:35 am

1 stop35h 40m

Funchal Madeira

Sat 2/28

6:40 pm-11:50 am

1 stop25h 10m

$541

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 2/16

12:43 am-8:10 am

3 stops23h 27m

Lisbon Humberto Delgado

Sun 2/22

10:50 am-9:30 am

2 stops30h 40m

$550

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

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, November is the cheapest month in which you can book a flight from San Francisco to Portugal (average of $489). 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 November 20, 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.

How often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

About 23% of weekly flights between $[0, place:'genitive'] and $[1, place:'genitive'] have experienced delays in the past year, with the average delay time being 115 minutes.

What is the most punctual flight time for $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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.

Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 23% 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 November 20, 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
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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
8,004 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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
9,025 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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
10,462 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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
2,067 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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
7,534 reviews
Delta
7.9
Good
8,004 reviews

Entertainment

7.9

Food

7.3

Boarding

8.1

Comfort

7.9

Crew

8.5

Overall

7.9

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 30 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 13h 20m. 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 ($257), American Airlines ($327), and United Airlines ($398).

  • 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 - Ponta Delgada Nordela.

  • 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 (90%), 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 $439 on average, our data indicates $1,947 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 $489). 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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$742FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$409Average$694FlexibilityNo cancel feeOn-time77%
IberiaCheapest$469Average$1,003FlexibilityNo cancel feeOn-time77%
KLMCheapest$497Average$770FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$529Average$811FlexibilityNo cancel feeOn-time70%
VuelingCheapest$532Average$869FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$536Average$1,113FlexibilityNo cancel feeOn-time76%
SWISSCheapest$553Average$884FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$554Average$1,120FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$555Average$765FlexibilityNo cancel feeOn-time77%

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