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$508+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Lisbon Humberto Delgado to San Francisco are usually found in February or April, booked 39 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 March 23, 2026.

This FlightHub deal was found by Cheapflights users on 3/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:25 pm
LIS
-
SFO
1 stop30h 15m
Scandinavian Airlines
Thu 5/284:45 pm
SFO
-
LIS
1 stop19h 40m
Scandinavian Airlines
Deal found 3/20$671
This Trip.com deal was found by Cheapflights users on 3/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:15 pm
LIS
-
SFO
1 stop25h 25m
Scandinavian Airlines
Thu 5/284:45 pm
SFO
-
LIS
1 stop19h 40m
Scandinavian Airlines
Deal found 3/21$679
This Iberia deal was found by Cheapflights users on 3/18. 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.
Wed 4/159:15 pm
LIS
-
SFO
1 stop28h 40m
Iberia
Thu 4/237:40 pm
SFO
-
LIS
1 stop16h 55m
Iberia
Deal found 3/18$706
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:55 am
LIS
-
SFO
1 stop18h 20m
SWISS
Thu 4/307:35 pm
SFO
-
LIS
1 stop19h 50m
SWISS
Deal found 3/20$756
This Mytrip deal was found by Cheapflights users on 3/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:40 pm
LIS
-
SFO
2 stops22h 35m
Multiple Airlines
Sat 4/253:15 pm
SFO
-
LIS
2 stops20h 10m
Multiple Airlines
Deal found 3/19$758
This United Airlines deal was found by Cheapflights users on 3/17. 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 4/25:05 am
LIS
-
SFO
1 stop15h 35m
United Airlines
Thu 4/167:00 am
SFO
-
LIS
1 stop17h 20m
United Airlines
Deal found 3/17$763
This United Airlines deal was found by Cheapflights users on 3/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:05 am
LIS
-
SFO
1 stop15h 35m
United Airlines
Tue 9/226:05 am
SFO
-
LIS
2 stops20h 25m
United Airlines
Deal found 3/20$764
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/145:05 am
LIS
-
SFO
1 stop15h 35m
United Airlines
Sat 4/256:40 am
SFO
-
LIS
2 stops17h 40m
United Airlines
Deal found 3/18$765
This United Airlines deal was found by Cheapflights users on 3/18. 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 4/235:05 am
LIS
-
SFO
1 stop22h 55m
United Airlines
Wed 5/69:05 pm
SFO
-
LIS
1 stop17h 40m
United Airlines
Deal found 3/18$766
This United Airlines deal was found by Cheapflights users on 3/18. 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 9/95:05 am
LIS
-
SFO
1 stop15h 35m
United Airlines
Wed 9/301:10 pm
SFO
-
LIS
1 stop13h 20m
United Airlines
Deal found 3/18$767

Find 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$671
(FlightHub)

One-way from

$508
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$873

Good one-way deal

$852 or less
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
Search Deals
From Lisbon Humberto Delgado to San Francisco
Search Deals
One-way flight from Lisbon Humberto Delgado to San Francisco
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a one-way flight from Lisbon Humberto Delgado to San Francisco.
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Lisbon to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 9/9

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

Wed 9/30

1:10 pm-10:30 am

1 stop13h 20m

$763

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 4/30

7:25 am-3:25 pm

1 stop16h 00m

San Francisco

Wed 5/6

1:45 pm-10:45 pm

1 stop25h 00m

$768

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 4/16

7:25 am-3:25 pm

1 stop16h 00m

San Francisco

Mon 4/20

1:45 pm-10:45 pm

1 stop25h 00m

$768

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 5/20

5:05 am-3:25 pm

1 stop18h 20m

San Francisco

Wed 5/27

5:05 am-10:30 am

2 stops21h 25m

$770

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 4/25

5:05 am-9:20 pm

2 stops24h 15m

San Francisco

Fri 5/8

9:05 pm-10:45 pm

1 stop17h 40m

$774

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 5/21

7:25 am-3:15 pm

1 stop15h 50m

San Francisco

Tue 5/26

9:05 pm-10:45 pm

1 stop17h 40m

$796

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 4/18

10:25 am-12:39 am

2 stops22h 14m

San Francisco

Sat 4/25

10:50 am-10:35 am

1 stop15h 45m

$797

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 4/30

10:25 am-9:34 pm

2 stops19h 09m

San Francisco

Thu 5/7

1:45 pm-1:40 pm

1 stop15h 55m

$801

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 4/9

5:55 am-4:15 pm

1 stop18h 20m

San Francisco

Thu 4/23

7:35 pm-2:45 pm

1 stop35h 10m

$803
Cheapest one-way

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 6/23

6:35 am-11:59 pm

2 stops25h 24m

$604

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Lisbon to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to San Francisco in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Lisbon-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lisbon-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Lisbon-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lisbon-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 13, 2026.

To ensure you get the cheapest price possible for a flight from Lisbon to San Francisco, you should look to book at least 39 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, February is the cheapest month in which you can book a flight from Lisbon to San Francisco (average of $572). Flying from Lisbon to San Francisco in March is currently the most expensive (average of $695). 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 March 23, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lisbon to San Francisco as you normally would.

The best insider tips for Lisbon to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Lisbon to San Francisco trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on LIS

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 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

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 March 23, 2026.
Read through reviews of airlines operating flights from Lisbon to San Francisco, such as Delta,Air France, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
Delta
7.9
Good
8,315 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
Air France
7.4
Good
1,547 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
United Airlines
7.4
Good
9,459 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
TAP AIR PORTUGAL
7.1
Good
2,172 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
British Airways
6.7
Okay
7,809 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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 long is the flight from Lisbon to San Francisco?

    For as low as $763, United Airlines can have you in San Francisco from Lisbon in 15h 35m. Airlines will cover a distance of 5664 mi.

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

    Our cheapest airline available from Lisbon to San Francisco is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as $604 on this airline. Additional options worth looking into are Delta and British Airways, starting at $625 and $642 round-trip. You may be able to fly from Lisbon to San Francisco for 27% less than the average price by searching for these airlines.

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

    $288 is the cheapest one-way deal found within the past few days, from Iberia. You may also be able to find cheap deals on LEVEL and LEVEL, with prices starting from $322 and $328, 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 Etihad Airways (79%), JetBlue (79%) and TAP AIR PORTUGAL (79%).

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

    The cheapest flight price from Lisbon to San Francisco is $774. On average you can expect to pay $1,389. The most popular route, (Lisbon Humberto Delgado - San Francisco), can usually be booked for $671.

  • 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, February is the cheapest month in which you can book a flight from Lisbon to San Francisco (average of $572). Flying from Lisbon to San Francisco in March is currently the most expensive (average of $695). 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
South San Francisco
Santa Clara
Santa Cruz
Livermore
Roseville
Watsonville
Rancho Cordova
San Bruno
San Ramon
Sunnyvale
Vacaville
San Carlos
Redwood City
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove
Rohnert Park

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from Lisbon to San Francisco

Discover the top 7 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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$604Average$873FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$625Average$766FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$642Average$755FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$657Average$829FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$693Average$844FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$708Average$857FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$764Average$902FlexibilityNo cancel feeOn-time69%

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