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Cheap flights from Lisbon to San Francisco from £420

LIS — SFO
22 Sep — 29 Sep1
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

Tue 3/1116:55 -
1 stop29h 55m
Fri 11/1216:45 -
1 stop15h 20m
Deal found 22/8£443
Tue 3/1116:55 -
1 stop29h 55m
Sat 12/1216:45 -
1 stop15h 20m
Deal found 22/8£456
Fri 6/1116:55 -
1 stop29h 55m
Sat 12/1216:45 -
1 stop15h 20m
Deal found 22/8£457
Wed 4/1116:55 -
1 stop29h 55m
Sun 13/1216:45 -
1 stop15h 20m
Deal found 22/8£487
Tue 3/1116:55 -
1 stop29h 55m
Mon 7/1212:05 -
2 stops44h 00m
Deal found 22/8£499
Wed 4/1116:55 -
2 stops35h 37m
Thu 10/1216:45 -
1 stop15h 20m
Deal found 22/8£503
Wed 4/1116:55 -
2 stops35h 37m
Sat 12/1216:45 -
1 stop15h 20m
Deal found 22/8£516
Sun 8/1116:55 -
1 stop29h 55m
Wed 9/1216:45 -
1 stop15h 20m
Deal found 22/8£518
Sun 8/1116:55 -
1 stop29h 55m
Mon 7/1216:45 -
1 stop15h 20m
Deal found 22/8£531
Wed 4/1116:55 -
1 stop29h 55m
Tue 8/1214:47 -
2 stops41h 18m
Deal found 22/8£542
Sun 8/1116:55 -
2 stops52h 57m
Sat 12/1216:45 -
1 stop15h 20m
Deal found 22/8£546

Find flight deals from Lisbon to San Francisco

Round-trip from

£443

One-way from

£420

Popular in

July

Cheapest in

February

Average price

£758

Good one-way deal

£1,316 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 3/11-11/12
  • 2 total stops
  • 45h 15m total
  • Lisbon to San Francisco
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British Airways
  • British Airways
  • 28/10
  • 1 total stop
  • 17h 45m total
  • Lisbon to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£73 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a one-way flight from Lisbon Humberto Delgado to San Francisco.
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Cheapflights Fare Finder

 
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 Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Wed 23/9

05:00-11:45

1 stop14h 45m

San Francisco

Mon 28/9

06:35-11:15

2 stops20h 40m

£583

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Thu 24/9

05:00-11:45

1 stop14h 45m

San Francisco

Wed 7/10

13:50-17:50

2 stops20h 00m

£586

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Fri 2/10

11:55-00:22

2 stops20h 27m

San Francisco

Mon 12/10

06:05-11:15

2 stops21h 10m

£588

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Tue 15/9

05:00-18:09

2 stops21h 09m

San Francisco

Mon 21/9

13:15-17:50

2 stops20h 35m

£588
Fastest return journey

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Mon 5/10

05:00-11:45

1 stop14h 45m

San Francisco

Mon 12/10

15:05-14:55

1 stop15h 50m

£588

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Thu 1/10

05:00-16:58

2 stops19h 58m

San Francisco

Sun 11/10

06:20-11:15

2 stops20h 55m

£590
Cheapest one-way

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Wed 30/9

06:30-20:50

1 stop22h 20m

£476

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Sun 11/10

06:30-20:50

1 stop22h 20m

£478

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Mon 21/9

06:35-00:59

2 stops26h 24m

£534

LisbonSan Francisco

LIS Lisbon Humberto Delgado - SFO San Francisco

LISSFO

Lisbon Humberto Delgado

Wed 23/9

20:45-16:20

1 stop27h 35m

£535

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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

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 38 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 £531). Flying from Lisbon to San Francisco in July is currently the most expensive (average of £812). 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?

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?

Airfare is below average for this route at the moment.

Lisbon to San Francisco flights typically cost between £605 and £838 in November.
The cheapest return price found within the last 5 days was £443 on Scandinavian Airlines (3 Nov–9 Dec).

Reviews of airlines servicing San Francisco

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
2,373 reviews
Check prices

Overall

7.2

Entertainment

6.4

Boarding

7.0

Comfort

7.1

Crew

7.8

Food

6.3

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
2,373 reviews
TAP AIR PORTUGAL
7.2
Good
2,373 reviews
Check prices

Overall

7.2

Entertainment

6.4

Boarding

7.0

Comfort

7.1

Crew

7.8

Food

6.3

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

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

    Airlines like Scandinavian Airlines and Delta fly from Lisbon to San Francisco in about 14h 45m. The time it takes to get you to your destination can typically vary by up to 20h 52m. There are 5664 mi between Lisbon and San Francisco. Both multi-stop and direct flights can be found to your destination and back.

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

    According to our current data, TAP AIR PORTUGAL (£506), offers the cheapest pricing from Lisbon to San Francisco. Users have found that TAP AIR PORTUGAL is 21% 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 (92%), JetBlue (86%) and TAP AIR PORTUGAL (86%).

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

    While on average a flight from Lisbon to San Francisco is generally £1,316, our data shows the cheapest flight currently is £1,316. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay £860 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 £531). Flying from Lisbon to San Francisco in July is currently the most expensive (average of £812). 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
Roseville
Newark
Bodega Bay
Sunnyvale
South San Francisco

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Lisbon to San Francisco

AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£506Average£678FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

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