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$336+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Portugal to San Francisco

Cheapest flights from Portugal to San Francisco
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 December 18, 2025.

This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:00 amLIS - SFO
1 stop23h 10mLufthansa
Sat 1/39:40 pmSFO - LIS
1 stop17h 50mLufthansa
Deal found 12/17$814
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:05 amLIS - SFO
2 stops19h 32mBritish Airways
Mon 1/56:10 amSFO - LIS
1 stop18h 55mBritish Airways
Deal found 12/16$833
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:30 amLIS - SFO
2 stops18h 34mDelta
Wed 1/73:40 pmSFO - LIS
1 stop17h 50mDelta
Deal found 12/17$837
This Finnair deal was found by Cheapflights users on 12/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:40 amLIS - SFO
1 stop19h 46mMultiple Airlines
Tue 12/3011:35 pmSFO - LIS
1 stop23h 20mMultiple Airlines
Deal found 12/16$855
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:30 amLIS - SFO
1 stop15h 55mDelta
Tue 12/305:45 amSFO - LIS
2 stops21h 35mDelta
Deal found 12/16$861
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/2811:55 amLIS - SFO
2 stops27h 45mUnited Airlines
Sat 1/35:15 amSFO - LIS
2 stops21h 00mUnited Airlines
Deal found 12/17$882
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/1910:15 amLIS - SFO
1 stop15h 58mUnited Airlines
Sat 1/39:40 pmSFO - LIS
1 stop17h 50mUnited Airlines
Deal found 12/17$889
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/1911:05 amLIS - SFO
2 stops21h 49mAmerican Airlines
Mon 1/56:10 amSFO - LIS
1 stop18h 55mAmerican Airlines
Deal found 12/17$895

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$613
(Gotogate)

One-way from

$336
(LEVEL)

Popular in

January

Cheapest in

February

Average price

$826

Good one-way deal

$852 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
Search Deals
From Portugal to San Francisco
Search Deals
One-way flight from Portugal to San Francisco
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a one-way flight from Portugal to San Francisco.
Search Deals

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 December 18, 2025.
Use the filters below to find and compare flights from Portugal to San Francisco that are best for you.

Fly from

Portugal

Fly to

San Francisco

Route

Depart

Return

Price

FunchalSan Francisco

FNC - SFO

FNCSFO

Funchal Madeira

Thu 1/15

6:10 pm-4:05 pm

1 stop29h 55m

San Francisco

Mon 1/19

4:35 pm-5:15 pm

1 stop16h 40m

$613

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 1/15

6:00 pm-4:05 pm

1 stop30h 05m

San Francisco

Wed 1/28

4:35 pm-3:05 pm

1 stop14h 30m

$623

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 1/23

4:40 pm-2:35 pm

1 stop29h 55m

San Francisco

Wed 1/28

4:03 pm-3:50 pm

2 stops39h 47m

$671

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 1/17

6:55 pm-11:04 pm

2 stops36h 09m

San Francisco

Sat 1/24

4:40 pm-4:05 pm

1 stop15h 25m

$679

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 1/15

9:55 pm-4:05 pm

2 stops26h 10m

San Francisco

Wed 1/28

4:35 pm-10:30 pm

2 stops21h 55m

$681

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sat 1/31

6:55 am-2:45 pm

1 stop15h 50m

San Francisco

Sat 2/7

4:35 pm-3:00 pm

1 stop14h 25m

$684

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 1/30

6:00 pm-2:45 pm

1 stop28h 45m

San Francisco

Fri 2/6

7:10 pm-12:30 am

1 stop21h 20m

$688

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sat 1/31

6:10 pm-11:50 am

2 stops25h 40m

San Francisco

Sat 2/7

1:55 pm-10:55 pm

2 stops25h 00m

$706

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sun 2/1

9:50 pm-4:30 pm

2 stops26h 40m

San Francisco

Sun 2/8

7:25 pm-9:15 pm

2 stops17h 50m

$713

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 2/25

9:40 am-2:30 pm

Nonstop12h 50m

San Francisco

Wed 3/18

5:35 pm-11:30 am

Nonstop10h 55m

$718

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 54 results
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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.
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

What is the cheapest month to book a flight from Portugal to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $552). Flying from Portugal to San Francisco in August is currently the most expensive (average of $675). 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 December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Portugal to San Francisco in the evening. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight at noon.

How often are flights from Portugal to San Francisco delayed?

About 11% of weekly flights between Portugal and San Francisco have experienced delays in the past year, with the average delay time being 131 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?

Friday tends to have the lowest number of delays on this route, whereas Wednesday 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 11% of flights being delayed.

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 December 18, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and TAP 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.
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
9,092 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
TAP AIR PORTUGAL
7.2
Good
2,091 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Lufthansa
6.8
Okay
7,635 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.7
Okay
7,585 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

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

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

    This flight path from Portugal to San Francisco was viewed by 1 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 Portugal to San Francisco?

    There are many flights that can get you from Portugal to San Francisco in 29h 55m. Fly via TAP AIR PORTUGAL or Scandinavian Airlines to get the fastest option. Airlines will cover a distance of 5617 mi.

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

    To fly one-way, consider booking your trip with LEVEL, which is currently one of the cheapest options available, starting at $317. Iberia flights start at $338 while deals on Vueling start at $348 one-way.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Portugal to San Francisco consider choosing Etihad Airways (71%), JetBlue (68%) or TAP AIR PORTUGAL (68%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Portugal to San Francisco is generally $1,869, our data shows the cheapest flight currently is $662. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay $682 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portugal to San Francisco 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 Portugal to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $552). Flying from Portugal to San Francisco in August is currently the most expensive (average of $675). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Manteca
Watsonville
Redwood City
Sunnyvale
Santa Clara
San Bruno
Daly City
San Carlos
Vallejo
Hollister
San Ramon
Foster City
Union City
Davis
Emeryville

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Top 7 airlines flying from Portugal to San Francisco

Discover the top 7 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$572Average$717FlexibilityNo cancel feeOn-time70%
DeltaCheapest$587Average$759FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$648Average$832FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$657Average$829FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$665Average$840FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$708Average$900FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$732Average$915FlexibilityNo cancel feeOn-time69%

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