San Francisco

$325+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Feb 27 — Mar 61
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Cheap 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$529
(Mytrip)

One-way from

$325
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$652

Good round-trip deal

$683 or less

Good one-way deal

$609 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
From Portugal to San Francisco
One-way flight from Portugal to San Francisco
Highest demand for flights based on searches. 14% potential increase in price ($146 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Portugal to San Francisco.
Price to beat on a one-way flight from Portugal to San Francisco.

Find 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 February 22, 2025.

This Mytrip deal was found by Cheapflights users on 2/21. 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 3/172:00 pmOPO - SFO
3 stops34h 25mMultiple Airlines
Mon 3/317:05 pmSFO - OPO
2 stops19h 20mMultiple Airlines
Deal found 2/21$529
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:10 pmLIS - SFO
3 stops34h 35mMultiple Airlines
Sun 5/117:30 pmSFO - LIS
2 stops18h 45mMultiple Airlines
Deal found 2/20$538
This British Airways deal was found by Cheapflights users on 2/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1011:05 amLIS - SFO
1 stop18h 47mBritish Airways
Mon 3/246:30 pmSFO - LIS
1 stop20h 25mBritish Airways
Deal found 2/21$621
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Mon 3/1711:05 amLIS - SFO
1 stop18h 47mAmerican Airlines
Sun 3/307:20 pmSFO - LIS
1 stop19h 40mAmerican Airlines
Deal found 2/21$625
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Wed 5/78:15 amOPO - SFO
2 stops23h 51mAmerican Airlines
Wed 5/2111:49 pmSFO - OPO
2 stops27h 51mAmerican Airlines
Deal found 2/21$634
This British Airways deal was found by Cheapflights users on 2/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/175:30 pmOPO - SFO
1 stop29h 30mBritish Airways
Mon 3/317:20 pmSFO - OPO
1 stop16h 30mBritish Airways
Deal found 2/21$650
This United Airlines deal was found by Cheapflights users on 2/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:00 amOPO - SFO
2 stops35h 52mUnited Airlines
Mon 3/241:01 pmSFO - OPO
2 stops19h 24mUnited Airlines
Deal found 2/21$656
This Gotogate deal was found by Cheapflights users on 2/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/107:20 pmOPO - SFO
1 stop29h 05mSWISS
Mon 3/248:25 pmSFO - OPO
1 stop31h 50mSWISS
Deal found 2/21$662
This Delta deal was found by Cheapflights users on 2/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/215:00 amLIS - SFO
2 stops21h 49mDelta
Sat 4/51:54 pmSFO - LIS
2 stops20h 01mDelta
Deal found 2/21$669
This SWISS deal was found by Cheapflights users on 2/21. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:15 pmLIS - SFO
1 stop36h 10mSWISS
Thu 11/207:25 pmSFO - LIS
1 stop32h 20mSWISS
Deal found 2/21$670
This United Airlines deal was found by Cheapflights users on 2/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/156:15 amLIS - SFO
1 stop16h 20mUnited Airlines
Mon 9/1511:40 pmSFO - LIS
2 stops25h 40mUnited Airlines
Deal found 2/21$671
This Lufthansa deal was found by Cheapflights users on 2/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:00 amLIS - SFO
1 stop15h 35mLufthansa
Wed 11/198:25 amSFO - LIS
1 stop17h 50mLufthansa
Deal found 2/21$672

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 February 22, 2025.

Fly from

Portugal

Fly to

San Francisco

Route

Depart

Return

Price

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/17

2:00 pm-5:25 pm

3 stops34h 25m

San Francisco

Mon 3/31

7:05 pm-10:25 pm

2 stops19h 20m

$529

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 4/29

7:10 pm-9:45 pm

3 stops34h 35m

San Francisco

Sun 5/11

7:30 pm-10:15 pm

2 stops18h 45m

$538

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 3/10

11:05 am-10:52 pm

1 stop18h 47m

San Francisco

Mon 3/24

6:30 pm-9:55 pm

1 stop20h 25m

$621

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 3/17

11:05 am-10:52 pm

1 stop18h 47m

San Francisco

Sun 3/30

7:20 pm-11:00 pm

1 stop19h 40m

$625

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 5/7

8:15 am-12:06 am

2 stops23h 51m

San Francisco

Wed 5/21

11:49 pm-11:40 am

2 stops27h 51m

$634

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/17

5:30 pm-4:00 pm

1 stop29h 30m

San Francisco

Mon 3/31

7:20 pm-7:50 pm

1 stop16h 30m

$650

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/10

6:00 am-10:52 am

2 stops35h 52m

San Francisco

Mon 3/24

1:01 pm-3:25 pm

2 stops19h 24m

$656

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 3/10

7:20 pm-5:25 pm

1 stop29h 05m

San Francisco

Mon 3/24

8:25 pm-11:15 am

1 stop31h 50m

$662

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 3/21

5:00 am-7:49 pm

2 stops21h 49m

San Francisco

Sat 4/5

1:54 pm-5:55 pm

2 stops20h 01m

$669

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 5/15

6:15 am-2:35 pm

1 stop16h 20m

San Francisco

Mon 9/15

11:40 pm-9:20 am

2 stops25h 40m

$671

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 58 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 $403). 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 February 22, 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 February 22, 2025.
See what other customers who have flown with Delta, KLM and Air Transat 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.
8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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

8.0
Very good
8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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

8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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

8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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

8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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

8.0
Very good

Overall

8.0

Comfort

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

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?

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

    To fly one-way, consider booking your trip with Vueling, which is currently one of the cheapest options available, starting at $432. Iberia flights start at $533 while deals on Air Transat start at $586 one-way.

  • What are the most popular routes from Portugal to 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 (95%), Etihad Airways (85%) or JetBlue (81%) 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 $1,565, our data shows the cheapest flight currently is $577. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay $538 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 $403). 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
Vallejo
Newark
Alameda
Campbell
Pacific Grove
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portugal to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$473Average$623FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$528Average$698FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$564Average$701FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$573Average$758FlexibilityNo cancel feeOn-time70%
IberiaCheapest$613Average$774FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$655Average$873FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$659Average$904FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$669Average$842FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$689Average$764FlexibilityNo cancel feeOn-time71%
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