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$270+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$414
(FlightHub)

One-way from

$270
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$895

Good round-trip deal

$448 or less

Good one-way deal

$293 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 ($28 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This FlightHub deal was found by Cheapflights users on 8/14. 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.
Mon 12/14:40 pmSFO - FAO
2 stops33h 05mScandinavian Airlines
Wed 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 8/14$414
This Booking.com deal was found by Cheapflights users on 8/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/67:40 pmSFO - FAO
1 stop29h 10mScandinavian Airlines
Wed 10/2210:45 amFAO - SFO
2 stops37h 45mScandinavian Airlines
Deal found 8/12$535
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:45 pmSFO - OPO
2 stops20h 00mTAP AIR PORTUGAL
Tue 9/2310:30 pmOPO - SFO
1 stop24h 05mTAP AIR PORTUGAL
Deal found 8/14$574
This oojo deal was found by Cheapflights users on 8/13. 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.
Tue 10/74:20 pmSFO - OPO
1 stop16h 40mTAP AIR PORTUGAL
Wed 10/157:00 amOPO - SFO
1 stop15h 35mTAP AIR PORTUGAL
Deal found 8/13$575
This oojo deal was found by Cheapflights users on 8/12. 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.
Sat 11/15:35 pmSFO - OPO
1 stop14h 25mTAP AIR PORTUGAL
Fri 11/149:00 amOPO - SFO
1 stop15h 05mTAP AIR PORTUGAL
Deal found 8/12$576
This LEVEL deal was found by Cheapflights users on 8/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/48:10 pmSFO - OPO
1 stop27h 50mLEVEL
Fri 10/1710:00 pmOPO - SFO
1 stop28h 10mLEVEL
Deal found 8/14$581
This United deal was found by Cheapflights users on 8/12. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1112:43 amSFO - OPO
2 stops24h 47mMultiple Airlines
Wed 11/2612:30 pmOPO - SFO
1 stop15h 40mMultiple Airlines
Deal found 8/12$584
This United Airlines deal was found by Cheapflights users on 8/13. 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 11/110:59 pmSFO - OPO
2 stops27h 31mUnited Airlines
Fri 11/1412:30 pmOPO - SFO
1 stop15h 40mUnited Airlines
Deal found 8/13$589
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:30 amSFO - OPO
2 stops17h 00mUnited Airlines
Wed 11/266:00 amOPO - SFO
2 stops22h 57mUnited Airlines
Deal found 8/12$594
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Wed 11/1910:40 amSFO - OPO
1 stop14h 50mUnited Airlines
Mon 12/112:30 pmOPO - SFO
1 stop35h 25mUnited Airlines
Deal found 8/13$599
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:35 pmSFO - FAO
1 stop15h 10mTAP AIR PORTUGAL
Wed 12/106:05 amFAO - SFO
1 stop16h 25mTAP AIR PORTUGAL
Deal found 8/14$605
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:35 pmSFO - FAO
1 stop23h 15mTAP AIR PORTUGAL
Wed 11/196:05 amFAO - SFO
1 stop16h 25mTAP AIR PORTUGAL
Deal found 8/12$607

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 August 14, 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

Mon 10/6

7:40 pm-8:50 am

1 stop29h 10m

Faro

Wed 10/22

10:45 am-4:30 pm

2 stops37h 45m

$535

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 9/9

6:45 pm-10:45 pm

2 stops20h 00m

Porto

Tue 9/23

10:30 pm-2:35 pm

1 stop24h 05m

$574

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 10/7

4:20 pm-5:00 pm

1 stop16h 40m

Porto

Wed 10/15

7:00 am-2:35 pm

1 stop15h 35m

$575

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 11/1

5:35 pm-3:00 pm

1 stop14h 25m

Porto

Fri 11/14

6:55 am-4:05 pm

1 stop17h 10m

$576

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 1/17

4:35 pm-6:05 pm

1 stop17h 30m

Porto

Sun 1/25

6:00 pm-2:35 pm

1 stop28h 35m

$576

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 11/12

4:35 pm-3:05 pm

1 stop14h 30m

Porto

Wed 11/26

6:55 am-2:30 pm

1 stop15h 35m

$576

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 11/19

11:45 am-9:30 am

1 stop13h 45m

Porto

Tue 12/2

12:30 pm-8:10 pm

1 stop15h 40m

$579

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 10/4

8:10 pm-8:00 am

1 stop27h 50m

Porto

Fri 10/17

10:00 pm-6:10 pm

1 stop28h 10m

$581

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Tue 12/9

7:25 pm-6:30 pm

1 stop15h 05m

Porto

Tue 12/16

7:25 pm-4:30 pm

1 stop29h 05m

$583

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 11/12

6:45 am-9:30 am

2 stops18h 45m

Porto

Wed 11/26

12:30 pm-8:10 pm

1 stop15h 40m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

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 $1,128). 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 August 14, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 2% 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 August 14, 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
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
9,949 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
1,948 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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
7,266 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

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 46 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 ($316), TAP AIR PORTUGAL ($317), and American Airlines ($380).

  • 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 - Funchal Madeira.

  • 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: TAP AIR PORTUGAL (87%), JetBlue (74%), Etihad Airways (69%).

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

    Looking at all options, your cheapest flight can be booked for $169. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $472 on average our data indicates $1,771 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 $1,128). 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$723FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$363Average$999FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$473Average$697FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$496Average$821FlexibilityNo cancel feeOn-time72%
VuelingCheapest$532Average$848FlexibilityNo cancel feeOn-time88%
LufthansaCheapest$550Average$1,172FlexibilityNo cancel feeOn-time76%
KLMCheapest$559Average$909FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$564Average$830FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$570Average$965FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$582Average$910FlexibilityNo cancel feeOn-time79%

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