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Cheap flights from Lisbon to San Francisco from £442

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SFO
21 Aug — 28 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Lisbon to San Francisco

Enter your travel dates to find the best prices.

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 22 July 2026.

Wed 18/1120:45
LIS
-
SFO
2 stops20h 17m
Multiple Airlines
Wed 25/1111:45
SFO
-
LIS
2 stops19h 05m
Multiple Airlines
Deal found 21/7£442
Thu 3/1211:05
LIS
-
SFO
1 stop19h 23m
British Airways
Mon 7/1209:12
SFO
-
LIS
2 stops18h 53m
British Airways
Deal found 21/7£455
Thu 27/811:05
LIS
-
SFO
1 stop19h 54m
British Airways
Thu 10/919:30
SFO
-
LIS
1 stop19h 35m
British Airways
Deal found 19/7£457
Wed 14/1011:05
LIS
-
SFO
1 stop19h 54m
British Airways
Wed 28/1016:04
SFO
-
LIS
2 stops18h 36m
British Airways
Deal found 19/7£457
Mon 21/906:35
LIS
-
SFO
2 stops21h 11m
American Airlines
Sun 4/1014:58
SFO
-
LIS
2 stops24h 07m
American Airlines
Deal found 21/7£458
Mon 14/918:45
LIS
-
SFO
1 stop27h 05m
British Airways
Fri 2/1016:35
SFO
-
LIS
1 stop15h 00m
British Airways
Deal found 18/7£462
Sat 12/1210:40
LIS
-
SFO
1 stop16h 44m
British Airways
Sun 24/106:37
SFO
-
LIS
1 stop18h 28m
British Airways
Deal found 20/7£463
Tue 25/811:05
LIS
-
SFO
1 stop15h 51m
British Airways
Mon 31/807:00
SFO
-
LIS
1 stop18h 05m
British Airways
Deal found 20/7£463
Tue 22/913:40
LIS
-
SFO
1 stop32h 10m
British Airways
Tue 29/916:35
SFO
-
LIS
1 stop15h 00m
British Airways
Deal found 21/7£466
Thu 27/811:05
LIS
-
SFO
1 stop15h 51m
British Airways
Sat 12/906:00
SFO
-
LIS
1 stop19h 05m
British Airways
Deal found 22/7£466

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 22 July 2026.

Round-trip from

£442

Popular in

July

Cheapest in

February

Average price

£771

Good one-way deal

£1,343 or less
British Airways
  • British Airways
  • 18/11-25/11
  • 4 total stops
  • 39h 22m total
  • Lisbon to San Francisco
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a one-way flight from Lisbon Humberto Delgado to San Francisco.
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Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 22 July 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 return flight

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 4/9

11:05-21:09

1 stop18h 04m

San Francisco

Fri 11/9

13:29-15:35

2 stops18h 06m

£456

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 1/9

11:05-18:56

1 stop15h 51m

San Francisco

Wed 30/9

19:30-23:15

1 stop19h 45m

£457

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 7/1

07:00-14:55

1 stop15h 55m

San Francisco

Sat 6/3

11:29-14:50

2 stops19h 21m

£462

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 7/1

07:00-18:45

1 stop19h 45m

San Francisco

Thu 4/3

20:35-21:55

1 stop17h 20m

£462

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 25/8

11:05-18:56

1 stop15h 51m

San Francisco

Mon 31/8

07:00-09:05

1 stop18h 05m

£463

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 22/9

13:40-13:50

1 stop32h 10m

San Francisco

Tue 29/9

16:35-15:35

1 stop15h 00m

£466

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 22/9

16:30-13:50

1 stop29h 20m

San Francisco

Fri 2/10

19:30-23:10

1 stop19h 40m

£466
Fastest return journey

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 18/9

05:05-15:20

1 stop18h 15m

San Francisco

Tue 29/9

12:45-10:30

1 stop13h 45m

£487

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Sat 24/10

05:55-18:55

2 stops21h 00m

San Francisco

Sun 25/10

20:25-14:35

1 stop35h 10m

£498

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 17/8

12:20-06:41

2 stops26h 21m

San Francisco

Mon 24/8

07:30-08:20

2 stops16h 50m

£511

Flights are sorted by cheapest return flights first.

Deals found on 19/7

Showing 1-10 of 24 resultsSorted by cheapest first
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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 return 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?

To ensure you get the cheapest price possible for a flight from Lisbon to San Francisco, you should look to book at least 61 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 £542). Flying from Lisbon to San Francisco in July is currently the most expensive (average of £771). 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 22 July 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.

How much does it cost for a return flight 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 22 July 2026.
Check out reviews from past customers who have flown with TAP AIR PORTUGAL from Lisbon to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
TAP AIR PORTUGAL
7.2
Good
2,342 reviews
Check prices

Comfort

7.1

Entertainment

6.4

Food

6.3

Boarding

7.0

Crew

7.8

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

LIS - ORD

The check in process at the Lisbon Airport was terrible. The TAP staff was incompetent and directed us incorrectly.
TAP AIR PORTUGAL
7.2
Good
2,342 reviews
TAP AIR PORTUGAL
7.2
Good
2,342 reviews
Check prices

Comfort

7.1

Entertainment

6.4

Food

6.3

Boarding

7.0

Crew

7.8

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

LIS - ORD

The check in process at the Lisbon Airport was terrible. The TAP staff was incompetent and directed us incorrectly.

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.

  • What airports do I use to fly from Lisbon to San Francisco?

    You will need to book a flight from Lisbon Humberto Delgado to San Francisco if you want to fly from Lisbon to San Francisco. At least 1 airline has flights from Humberto Delgado (LIS) to San Francisco (SFO) on a regular basis. There is 1 flight to San Francisco from the Lisbon airport per day. If you manage to book one that is nonstop, then you can expect the flight time from LIS to SFO to be around 22h 06m.

  • How long is the flight from Lisbon to San Francisco?

    Airlines like British Airways fly from Lisbon to San Francisco in about 15h 51m. The time it takes to get you to your destination can typically vary by up to . There are 5664 mi between Lisbon and San Francisco.

  • What is the cheapest airline to fly from Lisbon to San Francisco round-trip?

    According to our current data, TAP AIR PORTUGAL (£516), offers the cheapest pricing from Lisbon to San Francisco. Users have found that TAP AIR PORTUGAL is 20% cheaper than the other options available to this destination.

  • 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 (89%), JetBlue (76%) and TAP AIR PORTUGAL (76%).

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

    While on average a flight from Lisbon to San Francisco is generally £1,343, our data shows the cheapest flight currently is £1,343. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay £470 for that flight.

  • 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 holiday 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 £542). Flying from Lisbon to San Francisco in July is currently the most expensive (average of £771). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
San Bruno
Newark
Bodega Bay
Sunnyvale
South San Francisco

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Lisbon to San Francisco

Discover the top airline 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 858,174 searches. Data last updated 22 July 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£516Average£692FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Lisbon to San Francisco?

When you search for this flight from Lisbon to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Lisbon to San Francisco?

Cheapflights helps you find that perfect flight to San Francisco from Lisbon by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Lisbon to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Lisbon? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Lisbon to San Francisco become cheaper?

Not ready to book yet? You can track prices for flights from Lisbon to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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