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$250+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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Cheap 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 December 3, 2025.

This KLM deal was found by Cheapflights users on 12/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:55 pmSFO - FNC
1 stop35h 35mKLM
Thu 12/1110:20 amFNC - SFO
1 stop33h 30mKLM
Deal found 12/1$496
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
Thu 12/47:00 amSFO - LIS
1 stop17h 10mLufthansa
Wed 12/1711:55 amLIS - SFO
1 stop17h 06mLufthansa
Deal found 12/2$509
This Delta deal was found by Cheapflights users on 12/1. 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.
Wed 12/35:55 amSFO - LIS
2 stops20h 40mDelta
Fri 12/125:00 amLIS - SFO
2 stops20h 58mDelta
Deal found 12/1$510
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Tue 12/28:35 amSFO - LIS
1 stop15h 35mBrussels Airlines
Sat 12/1310:15 amLIS - SFO
1 stop19h 23mBrussels Airlines
Deal found 12/1$512
This United Airlines deal was found by Cheapflights users on 12/1. 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.
Tue 12/28:25 amSFO - LIS
1 stop16h 55mUnited Airlines
Thu 12/1811:55 amLIS - SFO
2 stops27h 45mUnited Airlines
Deal found 12/1$513
This United Airlines deal was found by Cheapflights users on 12/1. 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 12/612:43 amSFO - LIS
2 stops25h 32mUnited Airlines
Wed 12/2411:55 amLIS - SFO
2 stops27h 45mUnited Airlines
Deal found 12/1$514
This Cheapflightsfares deal was found by Cheapflights users on 12/1. 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.
Tue 12/305:25 pmSFO - LIS
2 stops34h 20mSWISS
Mon 1/193:25 pmLIS - SFO
2 stops29h 55mSWISS
Deal found 12/1$515
This Cheapflightsfares deal was found by Cheapflights users on 12/1. 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.
Tue 12/28:25 amSFO - LIS
2 stops19h 10mMultiple Airlines
Tue 12/910:15 amLIS - SFO
1 stop15h 56mMultiple Airlines
Deal found 12/1$516
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Fri 12/512:00 pmSFO - LIS
1 stop13h 20mMultiple Airlines
Wed 12/105:00 amLIS - SFO
1 stop15h 40mMultiple Airlines
Deal found 12/2$519
This oojo deal was found by Cheapflights users on 12/3. 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.
Wed 12/101:11 pmSFO - LIS
2 stops17h 39mBritish Airways
Fri 1/2310:40 amLIS - SFO
2 stops39h 50mBritish Airways
Deal found 12/3$524
This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
Wed 12/38:35 amSFO - LIS
1 stop15h 35mBrussels Airlines
Sat 12/1310:15 amLIS - SFO
1 stop19h 23mBrussels Airlines
Deal found 12/1$525
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Thu 12/47:30 amSFO - LIS
2 stops17h 50mAir Canada
Wed 12/1711:00 amLIS - SFO
1 stop18h 39mAir Canada
Deal found 12/2$527

Find 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 December 3, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$447
(Priceline)

One-way from

$250
(KLM)

Popular in

June

Cheapest in

January

Average price

$977

Good round-trip deal

$486 or less

Good one-way deal

$357 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 December 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 December 3, 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

5:10 pm-2:35 pm

1 stop29h 25m

$471

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Tue 2/24

5:30 pm-11:10 am

1 stop33h 40m

Funchal Madeira

Mon 3/2

12:25 pm-3:00 pm

1 stop34h 35m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Tue 2/17

8:40 pm-11:10 am

1 stop30h 30m

Funchal Madeira

Wed 2/25

3:55 pm-6:45 pm

1 stop34h 50m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Wed 2/18

5:30 pm-11:20 am

1 stop33h 50m

Funchal Madeira

Wed 2/25

3:55 pm-3:00 pm

1 stop31h 05m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Tue 2/17

8:40 pm-11:10 am

1 stop30h 30m

Funchal Madeira

Mon 2/23

12:25 pm-6:45 pm

1 stop38h 20m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Mon 2/23

8:40 pm-3:05 pm

1 stop34h 25m

Funchal Madeira

Thu 3/5

5:10 pm-3:00 pm

1 stop29h 50m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Wed 2/18

5:30 pm-11:20 am

1 stop33h 50m

Funchal Madeira

Thu 2/26

12:00 pm-6:45 pm

1 stop38h 45m

$485

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Wed 2/18

5:30 pm-11:20 am

1 stop33h 50m

Funchal Madeira

Tue 2/24

3:05 pm-3:00 pm

1 stop31h 55m

$485

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 3/12

5:40 pm-4:55 pm

1 stop16h 15m

Porto

Wed 3/18

10:25 am-3:35 pm

1 stop36h 10m

$499

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 3/12

5:40 pm-4:55 pm

1 stop16h 15m

Porto

Fri 3/20

5:35 pm-3:35 pm

1 stop29h 00m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

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 $488). 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 December 3, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 39% 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 from San Francisco to Portugal delayed?

About 23% of weekly flights between San Francisco and Portugal have experienced delays in the past year, with the average delay time being 115 minutes.

What is the most punctual flight time for San Francisco to Portugal 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.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to Portugal 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 December 3, 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
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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
9,065 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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
10,500 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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
2,081 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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
7,557 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

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 29 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 18h 50m. 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 Iberia ($258), LEVEL ($260), and TAP AIR PORTUGAL ($316).

  • 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: Etihad Airways (80%), JetBlue (78%), TAP AIR PORTUGAL (78%).

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

    Looking at all options, your cheapest flight can be booked for $261. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $404 on average, our data indicates $1,711 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 $488). 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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$750FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$363Average$986FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$409Average$688FlexibilityNo cancel feeOn-time77%
KLMCheapest$489Average$770FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$501Average$1,107FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$518Average$810FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$518Average$806FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$522Average$1,128FlexibilityNo cancel feeOn-time69%
VuelingCheapest$532Average$862FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$552Average$1,074FlexibilityNo cancel feeOn-time71%

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