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$330+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Portugal to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Portugal (PT0) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$556
(Mytrip)

One-way from

$330
(OneTravel)

Good round-trip deal

$717 or less

Good one-way deal

$610 or less
From Portugal to San Francisco
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One-way flight from Portugal to San Francisco
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Price to beat on a round-trip flight from Portugal to San Francisco.
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Price to beat on a one-way flight from Portugal to San Francisco.
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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 January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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.
Mon 3/102:35 pmOPO - SFO
2 stops29h 15mMultiple Airlines
Tue 3/182:50 pmSFO - OPO
2 stops17h 40mMultiple Airlines
Deal found 1/21$556
This British Airways deal was found by Cheapflights users on 1/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/178:20 amOPO - SFO
2 stops23h 00mBritish Airways
Tue 4/14:35 pmSFO - OPO
1 stop18h 55mBritish Airways
Deal found 1/20$568
This KLM deal was found by Cheapflights users on 1/19. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/45:30 amLIS - SFO
1 stop15h 40mMultiple Airlines
Tue 4/291:45 pmSFO - LIS
1 stop25h 05mMultiple Airlines
Deal found 1/19$572
This KLM deal was found by Cheapflights users on 1/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/111:40 amLIS - SFO
1 stop32h 05mKLM
Tue 4/291:45 pmSFO - LIS
1 stop16h 50mKLM
Deal found 1/20$573
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Sat 3/110:30 amLIS - SFO
1 stop20h 22mAmerican Airlines
Sun 3/99:40 pmSFO - LIS
1 stop17h 05mAmerican Airlines
Deal found 1/21$574
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/176:20 amOPO - SFO
2 stops21h 36mDelta
Tue 4/13:05 pmSFO - OPO
1 stop16h 25mDelta
Deal found 1/20$574
This Priceline deal was found by Cheapflights users on 1/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/86:40 pmLIS - SFO
1 stop28h 20mBritish Airways
Sun 3/239:40 pmSFO - LIS
1 stop29h 10mBritish Airways
Deal found 1/19$577
This KLM deal was found by Cheapflights users on 1/21. 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.
Mon 3/106:20 amOPO - SFO
2 stops21h 26mKLM
Tue 3/182:50 pmSFO - OPO
1 stop24h 30mKLM
Deal found 1/21$583
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/178:20 amOPO - SFO
2 stops43h 23mAmerican Airlines
Mon 3/3112:25 amSFO - OPO
2 stops23h 10mAmerican Airlines
Deal found 1/20$584
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:35 amLIS - SFO
2 stops25h 45mFinnair
Mon 5/1212:46 pmSFO - LIS
2 stops26h 24mFinnair
Deal found 1/20$589
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/285:00 amLIS - SFO
2 stops18h 47mDelta
Thu 2/61:31 pmSFO - LIS
2 stops19h 59mDelta
Deal found 1/20$607
This oojo deal was found by Cheapflights users on 1/21. 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.
Fri 2/143:55 pmOPO - SFO
1 stop31h 00mTAP AIR PORTUGAL
Fri 2/217:15 pmSFO - OPO
1 stop13h 45mTAP AIR PORTUGAL
Deal found 1/21$634

Find flights from Portugal to San Francisco within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/10

2:35 pm-12:50 pm

2 stops29h 15m

San Francisco

Tue 3/18

2:50 pm-3:30 pm

2 stops17h 40m

$556

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/17

8:20 am-12:20 am

2 stops23h 00m

San Francisco

Tue 4/1

4:35 pm-7:30 pm

1 stop18h 55m

$568

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 4/1

7:30 pm-11:45 am

1 stop24h 15m

San Francisco

Tue 4/29

1:45 pm-6:40 pm

1 stop20h 55m

$573

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/17

6:20 am-8:56 pm

2 stops21h 36m

San Francisco

Tue 4/1

3:05 pm-3:30 pm

1 stop16h 25m

$574

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 2/4

12:30 pm-12:22 am

2 stops19h 52m

San Francisco

Tue 4/29

7:20 pm-11:00 pm

1 stop19h 40m

$574

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 3/1

10:30 am-9:11 pm

2 stops18h 41m

San Francisco

Sun 3/16

6:30 pm-9:45 pm

1 stop20h 15m

$578

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 3/31

5:40 am-8:02 pm

2 stops22h 22m

San Francisco

Wed 4/30

1:45 pm-6:40 pm

2 stops20h 55m

$580

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/10

6:20 am-8:46 pm

2 stops21h 26m

San Francisco

Tue 3/18

2:50 pm-10:20 pm

1 stop24h 30m

$583

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/17

8:20 am-9:41 am

2 stops32h 21m

San Francisco

Mon 3/31

12:15 am-11:40 am

2 stops27h 25m

$584

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 4/1

6:35 am-12:20 am

2 stops25h 45m

San Francisco

Mon 4/28

4:35 pm-11:10 pm

1 stop22h 35m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 50 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.

Travel insights for flights from Portugal to San Francisco

Get recent, data-driven insights about flights from Portugal to San Francisco including ideal travel times, pricing trends, and more.

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 $276). Flying from Portugal to San Francisco in June is currently the most expensive (average of $405). 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 January 21, 2025.

When flying from Portugal to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 January 21, 2025.
See what other customers who have flown with American Airlines, KLM and TAP AIR PORTUGAL from Portugal to San Francisco have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 10

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.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $508. British Airways flights start at $603 while deals on Iberia start at $619 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 TAP AIR PORTUGAL (97%), Etihad Airways (90%) or JetBlue (84%) 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 $1,306, our data shows the cheapest flight currently is $573. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay $475 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 $276). Flying from Portugal to San Francisco in June is currently the most expensive (average of $405). 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 Portugal?

Book flights to Portugal if you plan to visit one of these locations
Roseville
Mountain View
Turlock
Santa Cruz
Fairfield
Manteca
Sausalito
Watsonville
Hayward
Richmond
Hollister
South San Francisco
Antioch
Milpitas
Elk Grove
Newark
Alameda
Campbell
Lathrop
Pacific Grove

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Alternative routes for Portugal to San Francisco

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Top 9 airlines flying from Portugal to San Francisco

Discover the top 9 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$528Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$564Average$830FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$588Average$713FlexibilityNo cancel feeOn-time70%
IberiaCheapest$613Average$814FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$613Average$946FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$665Average$879FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$678Average$813FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$679Average$852FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$689Average$764FlexibilityNo cancel feeOn-time71%
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