San Francisco

$402+ Cheap flights from Lisbon (LIS) 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Aug 19 — Aug 261
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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to San Francisco are usually found in February or April, booked 87 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Lisbon to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Lisbon (LIS) 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 August 14, 2025.

Round-trip from

$686
(Iberia)

One-way from

$402
(Iberia)

Popular in

January

Cheapest in

February

Average price

$898

Good round-trip deal

$810 or less

Good one-way deal

$575 or less
From Lisbon Humberto Delgado to San Francisco
One-way flight from Lisbon Humberto Delgado to San Francisco
High demand for flights, 2% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Lisbon Humberto Delgado to San Francisco.
Price to beat on a one-way flight from Lisbon Humberto Delgado to San Francisco.

Find flight deals from Lisbon to San Francisco

Cheapest flights from Lisbon to San Francisco
Explore the most affordable flight options available from Lisbon to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/79:15 pmLIS - SFO
2 stops24h 35mIberia
Sat 10/188:10 pmSFO - LIS
1 stop16h 25mIberia
Deal found 8/14$686
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:10 pmLIS - SFO
2 stops23h 40mIberia
Sun 10/198:10 pmSFO - LIS
1 stop17h 20mIberia
Deal found 8/14$688
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:10 pmLIS - SFO
1 stop27h 25mScandinavian Airlines
Sun 1/114:40 pmSFO - LIS
1 stop15h 25mScandinavian Airlines
Deal found 8/14$693
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:05 amLIS - SFO
1 stop15h 35mUnited Airlines
Mon 11/31:25 pmSFO - LIS
1 stop12h 50mUnited Airlines
Deal found 8/14$694
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/155:05 amLIS - SFO
2 stops20h 32mUnited Airlines
Mon 10/276:45 amSFO - LIS
1 stop20h 30mUnited Airlines
Deal found 8/14$699
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:05 amLIS - SFO
1 stop15h 35mMultiple Airlines
Wed 9/247:30 pmSFO - LIS
1 stop19h 50mMultiple Airlines
Deal found 8/13$700
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:05 amLIS - SFO
1 stop15h 35mLufthansa
Tue 9/169:05 pmSFO - LIS
1 stop16h 45mLufthansa
Deal found 8/14$701
This Booking.com 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:55 amLIS - SFO
1 stop18h 15mMultiple Airlines
Tue 9/169:05 pmSFO - LIS
1 stop16h 45mMultiple Airlines
Deal found 8/14$702
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:10 pmLIS - SFO
2 stops23h 40mIberia
Sat 10/188:10 pmSFO - LIS
1 stop16h 25mIberia
Deal found 8/14$703
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:25 amLIS - SFO
1 stop15h 45mIberia
Tue 9/308:10 pmSFO - LIS
1 stop17h 20mIberia
Deal found 8/14$704
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:10 pmLIS - SFO
1 stop30h 00mSWISS
Tue 10/281:00 pmSFO - LIS
2 stops18h 35mSWISS
Deal found 8/14$705
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:55 amLIS - SFO
1 stop18h 15mSWISS
Wed 10/298:25 pmSFO - LIS
1 stop35h 10mSWISS
Deal found 8/14$708

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lisbon 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 August 14, 2025.
Use the filters below to find and compare flights from Lisbon to San Francisco that are best for you.

Fly from

Lisbon

Fly to

San Francisco

Route

Depart

Return

Price

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 10/9

10:10 pm-1:50 pm

2 stops23h 40m

San Francisco

Sun 10/19

8:10 pm-9:30 pm

1 stop17h 20m

$688

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 12/26

7:10 pm-2:35 pm

1 stop27h 25m

San Francisco

Sun 1/11

4:40 pm-4:05 pm

1 stop15h 25m

$693

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 12/26

7:10 pm-2:35 pm

1 stop27h 25m

San Francisco

Thu 1/8

4:40 pm-4:05 pm

1 stop15h 25m

$693

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 10/21

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

Wed 11/5

1:25 pm-10:15 am

1 stop12h 50m

$694

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 10/21

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

Tue 11/4

7:00 am-8:10 am

2 stops17h 10m

$694

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 10/15

5:05 am-5:37 pm

2 stops20h 32m

San Francisco

Mon 10/27

6:45 am-10:15 am

1 stop20h 30m

$699

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 10/14

5:05 am-7:44 pm

2 stops22h 39m

San Francisco

Tue 10/28

1:25 pm-10:15 am

1 stop13h 50m

$699

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 9/10

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

Wed 9/24

7:30 pm-11:20 pm

1 stop19h 50m

$700

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 9/11

5:55 am-4:35 pm

1 stop18h 40m

San Francisco

Sat 9/27

7:30 pm-11:20 pm

1 stop19h 50m

$700

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 9/16

8:25 am-4:10 pm

1 stop15h 45m

San Francisco

Tue 9/30

8:10 pm-9:30 pm

1 stop17h 20m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 21 results
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The best insider tips for Lisbon to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Lisbon to San Francisco trip
Airports
LIS

Expect long lines at immigration for non-Schengen flights, especially during morning and early afternoon departures.

Read more about LISby Ramsey Qubein
SFO

Use BART for an affordable 40-minute trip from SFO to downtown San Francisco. Purchase a Clipper Card for easy fare payment.

Read more about SFOby Harriet Baskas
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on LIS

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Best time to book a flight from Lisbon to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Lisbon 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 Lisbon to San Francisco

How far ahead should I book a flight from Lisbon to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Lisbon to San Francisco. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Lisbon to San Francisco, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Lisbon to San Francisco (average of $276). Flying from Lisbon to San Francisco in June is currently the most expensive (average of $358). 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 LIS to SFO?

Find hourly flight availability from Lisbon 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 August 14, 2025.

When flying from Lisbon to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 61% versus a flight at noon.

How much does it cost to fly round-trip from Lisbon to San Francisco?

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 August 14, 2025.
Read through reviews of airlines operating flights from Lisbon to San Francisco, such as Delta, United Airlines, and TAP AIR PORTUGAL. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

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 Lisbon to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Lisbon to San Francisco flight route?

  • What are the cheapest airlines flying from Lisbon to San Francisco round-trip?

    Our cheapest airline available from Lisbon to San Francisco is LEVEL. Our recent data shows that you can find tickets from as low as $473 on this airline. Additional options worth looking into are British Airways and Delta, starting at $572 and $587 round-trip. You may be able to fly from Lisbon to San Francisco for 42% less than the average price by searching for these airlines.

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

    The top 3 most reliable airlines when flying from Lisbon to San Francisco are Etihad Airways (83%), JetBlue (72%) and TAP AIR PORTUGAL (72%).

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

    The cheapest flight price from Lisbon to San Francisco is $493. On average you can expect to pay $1,258. The most popular route, (Lisbon Humberto Delgado - San Francisco), can usually be booked for $591.

  • Where are the most common layover locations when flying from Lisbon to San Francisco?

  • What are some popular things to do or see while on a layover in London?

    London travelers tend to visit Hyde Park, Buckingham Palace, and Piccadilly Circus more than anywhere else. Hyde Park, Buckingham Palace, and Piccadilly Circus can be accessed by traveling approximately 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Those looking to explore during their layover in London can rent a car from London Heathrow for about $48 per day.

  • Where are the least popular layover locations for Lisbon to San Francisco flights?

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Lisbon to San Francisco (average of $276). Flying from Lisbon to San Francisco in June is currently the most expensive (average of $358). 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
Santa Cruz
Livermore
South San Francisco
Mountain View
Turlock
Santa Clara
Hollister
Antioch
Watsonville
Manteca
Sunnyvale
Newark
Milpitas
Campbell
Foster City
San Leandro
Burlingame
Redwood City
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Lisbon to San Francisco

Discover the top 8 airlines that operate flights from Lisbon 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$473Average$623FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$572Average$726FlexibilityNo cancel feeOn-time70%
DeltaCheapest$587Average$742FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$604Average$907FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$657Average$822FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$659Average$792FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$668Average$764FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$690Average$892FlexibilityNo cancel feeOn-time69%

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