San Francisco

$536+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Jul 7 — Jul 141
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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to San Francisco are usually found in February or October, booked 87 days in advance, depart on a Thursday or Wednesday 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 July 2, 2025.

Round-trip from

$692
(Delta)

One-way from

$536
(Iberia)

Popular in

August

Cheapest in

February

Average price

$961

Good round-trip deal

$774 or less

Good one-way deal

$789 or less
From Lisbon Humberto Delgado to San Francisco
One-way flight from Lisbon Humberto Delgado to San Francisco
Highest demand for flights based on searches. 8% potential increase in price ($76 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in July 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 July 2, 2025.

This Delta deal was found by Cheapflights users on 6/30. 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 9/25:00 amLIS - SFO
2 stops20h 17mDelta
Mon 10/133:05 pmSFO - LIS
1 stop18h 45mDelta
Deal found 6/30$692
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:25 amLIS - SFO
1 stop15h 45mAmerican Airlines
Mon 9/294:30 pmSFO - LIS
1 stop17h 25mAmerican Airlines
Deal found 7/1$695
This KLM deal was found by Cheapflights users on 6/30. 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.
Wed 8/273:35 pmLIS - SFO
1 stop28h 10mKLM
Wed 9/101:45 pmSFO - LIS
1 stop37h 10mKLM
Deal found 6/30$698
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Mon 9/82:00 pmLIS - SFO
2 stops30h 40mMultiple Airlines
Mon 1/264:35 pmSFO - LIS
Nonstop11h 00mMultiple Airlines
Deal found 6/30$700
This British Airways deal was found by Cheapflights users on 7/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:10 amLIS - SFO
2 stops24h 49mBritish Airways
Fri 10/32:22 pmSFO - LIS
2 stops24h 48mBritish Airways
Deal found 7/1$702
This Gotogate deal was found by Cheapflights users on 7/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/255:55 amLIS - SFO
1 stop18h 15mSWISS
Wed 9/107:30 pmSFO - LIS
1 stop19h 50mSWISS
Deal found 7/2$725
This Lufthansa deal was found by Cheapflights users on 7/1. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:05 amLIS - SFO
1 stop15h 35mLufthansa
Tue 10/288:25 amSFO - LIS
1 stop18h 50mLufthansa
Deal found 7/1$731
This United Airlines deal was found by Cheapflights users on 6/30. 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 9/811:25 amLIS - SFO
1 stop17h 11mUnited Airlines
Sun 1/258:45 amSFO - LIS
1 stop15h 25mUnited Airlines
Deal found 6/30$744

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 July 2, 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

Tue 9/2

5:00 am-5:17 pm

2 stops20h 17m

San Francisco

Mon 10/13

3:05 pm-5:50 pm

1 stop18h 45m

$692

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 9/20

8:25 am-4:10 pm

1 stop15h 45m

San Francisco

Mon 9/29

4:30 pm-5:55 pm

1 stop17h 25m

$695

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 8/27

3:35 pm-11:45 am

1 stop28h 10m

San Francisco

Wed 9/10

1:45 pm-10:55 am

1 stop37h 10m

$698

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 9/8

2:00 pm-12:40 pm

2 stops30h 40m

San Francisco

Mon 1/26

4:35 pm-11:35 am

Nonstop11h 00m

$700

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 9/20

7:10 am-11:59 pm

2 stops24h 49m

San Francisco

Fri 10/3

2:22 pm-11:10 pm

2 stops24h 48m

$702

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 8/25

5:55 am-4:10 pm

1 stop18h 15m

San Francisco

Wed 9/10

7:30 pm-11:20 pm

1 stop19h 50m

$725

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 10/22

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

Tue 10/28

8:25 am-10:15 am

1 stop18h 50m

$731

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 9/8

11:25 am-9:40 pm

1 stop18h 15m

San Francisco

Sat 1/31

10:45 am-8:10 am

1 stop13h 25m

$744

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 8/19

9:10 am-6:10 pm

1 stop17h 00m

$536

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 8/12

8:25 pm-11:07 am

3 stops46h 42m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 12 results
1
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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 June 27, 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 $360). 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 July 2, 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.

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 July 2, 2025.
Read through reviews of airlines operating flights from Lisbon to San Francisco, such as Delta, KLM, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

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 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 Delta. Our recent data shows that you can find tickets from as low as $692 on this airline. Additional options worth looking into are American Airlines and KLM, starting at $695 and $698 round-trip. You may be able to fly from Lisbon to San Francisco for 16% less than the average price by searching for these airlines.

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

    $536 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on Aer Lingus and WestJet, with prices starting from $554 and $597, respectively.

  • 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 JetBlue (84%), TAP AIR PORTUGAL (84%) and Etihad Airways (82%).

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

    The cheapest flight price from Lisbon to San Francisco is $601. On average you can expect to pay $1,494. The most popular route, (Lisbon Humberto Delgado - San Francisco), can usually be booked for $615.

  • 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 $40 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 $360). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Santa Cruz
Turlock
Manteca
Watsonville
Antioch
Hollister
Newark
Alameda
Hayward
Milpitas
Sunnyvale
Daly City
Campbell
Foster City
Capitola
Richmond

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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$473Average$623FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$523Average$702FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$572Average$745FlexibilityNo cancel feeOn-time70%
TAP AIR PORTUGALCheapest$613Average$961FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$657Average$958FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$659Average$792FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$668Average$764FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$669Average$896FlexibilityNo cancel feeOn-time69%

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