What is the cheapest airline that flies from Portugal to San Francisco?

British Airways, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from Portugal to San Francisco

How long does it take to fly to San Francisco?

Flight times from Portugal to San Francisco vary, but if you’re flying out of Lisbon and flying into San Francisco (one of the most popular routes), then the duration is 12h 35m on average. Another popular route from Portugal to San Francisco is flying from Porto to San Francisco, which will take roughly 23h 35m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Portugal to San Francisco on average per week?

The number of flights available between Portugal and San Francisco is 6 per week as of September 2025. The most frequent departure day is Wed, with 50% of weekly flights leaving on this day.

What airlines fly to San Francisco?

TAP AIR PORTUGAL, British Airways and United Airlines are the top three most popular airlines that fly to San Francisco from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 46% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 8 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portugal to San Francisco Airport?

Prices for flights from Portugal to San Francisco Airport are updated daily.

How many operators does momondo search for flights from Portugal to San Francisco Airport?

As of September 2025, there are 8 operators available to choose from for flights from Portugal to San Francisco Airport.

How old do you have to be to fly from Portugal to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$404 Cheap Flights from Portugal to San Francisco in 2025/26

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Find the cheapest flights from Portugal to San Francisco

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Portugal to San Francisco

5:35 pm - 2:35 pmOPO-SFO

29h 00m1 stop

4:40 pm - 4:55 pmSFO-OPO

16h 15m1 stop

$564Scandinavian Airlines

Find Deal

vie., dic. 5 - jue., dic. 11

5:35 pm - 3:35 pmOPO-SFO

29h 00m1 stop

4:40 pm - 4:45 pmSFO-OPO

16h 05m1 stop

$600Scandinavian Airlines

Find Deal

vie., oct. 31 - dom., nov. 16

6:15 am - 7:30 pmOPO-SFO

21h 15m2 stops

10:40 am - 3:30 pmSFO-OPO

20h 50m2 stops

$673Delta

Find Deal

mié., oct. 15 - jue., oct. 23

7:20 am - 11:28 pmLIS-SFO

24h 08m2 stops

1:11 pm - 9:45 pmSFO-LIS

24h 34m2 stops

$675British Airways

Find Deal

mié., oct. 8 - mar., nov. 18

10:25 pm - 2:30 pmOPO-SFO

24h 05m1 stop

4:20 pm - 6:55 pmSFO-OPO

18h 35m1 stop

$676TAP AIR PORTUGAL

Find Deal

mié., oct. 15 - jue., oct. 23

12:45 pm - 11:41 pmLIS-SFO

18h 56m1 stop

3:05 pm - 5:50 pmSFO-LIS

18h 45m1 stop

$676Delta

Find Deal

jue., oct. 16 - jue., oct. 23

9:40 am - 2:30 pmLIS-SFO

12h 50mnonstop

7:10 pm - 2:15 pmSFO-LIS

11h 05mnonstop

$678TAP AIR PORTUGAL

Find Deal

mié., nov. 19 - vie., nov. 28

7:20 am - 11:28 pmLIS-SFO

24h 08m2 stops

7:20 pm - 11:05 pmSFO-LIS

19h 45m1 stop

$679British Airways

Find Deal

mié., oct. 8 - dom., oct. 12

5:05 am - 12:40 pmLIS-SFO

15h 35m1 stop

11:40 am - 9:20 amSFO-LIS

13h 40m1 stop

$694United Airlines

Find Deal

mié., oct. 8 - mar., oct. 14

5:05 am - 12:40 pmLIS-SFO

15h 35m1 stop

9:05 am - 9:20 amSFO-LIS

16h 15m2 stops

$695United Airlines

Find Deal

mié., oct. 8 - jue., nov. 20

KLM flights from Portugal to San Francisco

Our best KLM deals on Portugal to San Francisco flight tickets

KLM

Sep 24

OPO8:10 pmPorto

23h 35m

1 stop

SFO11:45 amSan Francisco

Oct 8

SFO3:05 pmSan Francisco

16h 25m

1 stop

OPO3:30 pmPorto

$659

Find similar

KLM

Oct 6

OPO6:30 amPorto

37h 15m

1 stop

SFO11:45 amSan Francisco

Oct 19

SFO3:05 pmSan Francisco

16h 25m

1 stop

OPO3:30 pmPorto

$665

Find similar

KLM

Oct 15

OPO8:10 pmPorto

23h 35m

1 stop

SFO11:45 amSan Francisco

Oct 23

SFO3:05 pmSan Francisco

16h 25m

1 stop

OPO3:30 pmPorto

$667

Find similar

Air France flights from Portugal to San Francisco

Our best Air France deals on Portugal to San Francisco flight tickets

Air France

Oct 1

LIS3:55 pmLisbon Humberto Delgado

28h 55m

1 stop

SFO12:50 pmSan Francisco

Oct 8

SFO3:05 pmSan Francisco

15h 45m

1 stop

LIS2:50 pmLisbon Humberto Delgado

$680

Find similar

Air France

Sep 30

LIS6:50 pmLisbon Humberto Delgado

26h 00m

1 stop

SFO12:50 pmSan Francisco

Oct 7

SFO3:05 pmSan Francisco

18h 45m

1 stop

LIS5:50 pmLisbon Humberto Delgado

$704

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

vie. 12/5

5:35 pm-2:35 pm

1 stop29h 00m

San Francisco

jue. 12/11

4:40 pm-4:55 pm

1 stop16h 15m

$564

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

vie. 10/31

5:35 pm-3:35 pm

1 stop29h 00m

San Francisco

dom. 11/16

4:40 pm-4:45 pm

1 stop16h 05m

$600

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

mié. 10/15

6:15 am-7:30 pm

2 stops21h 15m

San Francisco

jue. 10/23

10:40 am-3:30 pm

2 stops20h 50m

$673

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

mié. 10/8

7:20 am-11:28 pm

2 stops24h 08m

San Francisco

mar. 11/18

1:11 pm-9:45 pm

2 stops24h 34m

$675

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

mié. 10/15

10:25 pm-2:30 pm

1 stop24h 05m

San Francisco

jue. 10/23

4:20 pm-6:55 pm

1 stop18h 35m

$676

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

jue. 10/16

12:45 pm-11:41 pm

1 stop18h 56m

San Francisco

jue. 10/23

3:05 pm-5:50 pm

1 stop18h 45m

$676

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

mié. 11/19

9:40 am-2:30 pm

Nonstop12h 50m

San Francisco

vie. 11/28

7:10 pm-2:15 pm

Nonstop11h 05m

$678

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

mié. 10/8

7:20 am-11:28 pm

2 stops24h 08m

San Francisco

dom. 10/12

7:20 pm-11:05 pm

1 stop19h 45m

$679

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

mié. 10/8

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

mar. 10/14

11:40 am-9:20 am

1 stop13h 40m

$694

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

mié. 10/8

5:05 am-12:40 pm

1 stop15h 35m

San Francisco

jue. 11/20

9:05 am-9:20 am

2 stops16h 15m

$695

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How to get the cheapest flight ticket from Portugal to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $771.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Portugal to San Francisco is on a Wednesday when prices can be found for as low as $834. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $1,326.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Portugal to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $613. Flights at noon are often more expensive with an average ticket price of $957.

What is the cheapest Portugal to San Francisco flight route?

Fly from Lisbon Humberto Delgado to San Francisco for the best Portugal - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $812 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Portugal for as low as $682 on momondo.

What cabin class options are available on Portugal to San Francisco flights?

There are 3 cabin classes available to choose from on Portugal to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portugal to San Francisco flights?

You could potentially save up to 17% on your flight if you consider stops on a Portugal to San Francisco flight.

Cheap Portugal to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to San Francisco

Best Price Found	$499
Fastest flight time	12h 35m
Direct flights	Tue, Wed, Thu, Fri and Sun
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Portugal in the past 72 hours is $499. The best round-trip flight deal from Portugal to San Francisco found on momondo in the last 72 hours is $834.

The fastest flight from Portugal to San Francisco takes 12h 35m

Direct flights go from Portugal to San Francisco on Tuesday, Wednesday, Thursday, Friday and Sunday. The only airline offering direct flights is TAP AIR PORTUGAL.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

When did momondo last update prices for flights from Portugal to San Francisco Airport?
Prices for flights from Portugal to San Francisco Airport are updated daily.
How many operators does momondo search for flights from Portugal to San Francisco Airport?
As of September 2025, there are 8 operators available to choose from for flights from Portugal to San Francisco Airport.
How old do you have to be to fly from Portugal to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portugal to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portugal to San Francisco?
Based on momondo bookings for flights between Portugal and San Francisco, the leading plane model is Airbus A330-900neo, making up 66.37% of the total bookings. Other popular models include Airbus A330 with 30.97% and Airbus A330-200 with 2.65%.

Best airlines flying from Portugal to San Francisco

Compare and see reviews for airlines that fly from Portugal to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
LEVEL	PriceFrom $473	Free Cancellation	Rating 4.0 4 reviews	Search LEVEL flights
British Airways	PriceFrom $572	Free Cancellation	Rating 6.7 7,367 reviews	Search British Airways flights
Delta	PriceFrom $587	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
TAP AIR PORTUGAL	PriceFrom $604	Free Cancellation	Rating 7.1 1,977 reviews	Search TAP AIR PORTUGAL flights
Air France	PriceFrom $657	Free Cancellation	Rating 7.4 1,468 reviews	Search Air France flights
Lufthansa	PriceFrom $659	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights
American Airlines	PriceFrom $708	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $731	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

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Carmel-by-the-Sea

Modesto

Sonoma

Calistoga

Bodega Bay

Roseville

Hayward

Big Sur

Santa Clara

Daly City

Fremont

Berkeley

Half Moon Bay

Walnut Creek

Vallejo

Redwood City

Salinas

South San Francisco

Fairfield

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to San Francisco?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portugal to San Francisco for you.

Can I find flights from Portugal to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portugal to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Portugal to San Francisco?

Once you have performed a search for Portugal to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portugal to San Francisco right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from Portugal and alert you when they change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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vie. 10/17

vie. 10/24

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Cheap flights from Portugal to San Francisco from $404

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to San Francisco departing on 10/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Portugal to San Francisco

Recent round-trip flight deals from Portugal to San Francisco

Recent one-way flight deals from Portugal to San Francisco

Recent last minute flight deals from Portugal to San Francisco

Recent direct flight deals from Portugal to San Francisco

KLM flights from Portugal to San Francisco

Our best KLM deals on Portugal to San Francisco flight tickets

Air France flights from Portugal to San Francisco

Our best Air France deals on Portugal to San Francisco flight tickets

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Use the filters below to find and compare flights from Portugal to San Francisco that are best for you.

See travel insights to San Francisco from

How to get the cheapest flight ticket from Portugal to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $771.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Portugal to San Francisco is on a Wednesday when prices can be found for as low as $834. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $1,326.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Portugal to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $613. Flights at noon are often more expensive with an average ticket price of $957.

What is the cheapest Portugal to San Francisco flight route?

Fly from Lisbon Humberto Delgado to San Francisco for the best Portugal - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Portugal to San Francisco flights?

There are 3 cabin classes available to choose from on Portugal to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Portugal to San Francisco flights?

You could potentially save up to 17% on your flight if you consider stops on a Portugal to San Francisco flight.

What is the cheapest airline that flies from Portugal to San Francisco?

British Airways, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from Portugal to San Francisco

What airlines fly to San Francisco?

How many flights depart from Portugal to San Francisco on average per week?

The number of flights available between Portugal and San Francisco is 6 per week as of September 2025. The most frequent departure day is Wed, with 50% of weekly flights leaving on this day.

How long does it take to fly to San Francisco?

Cheap Portugal to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to San Francisco

Best Price Found

Fastest flight time

Direct flights

Airports in San Francisco

When did momondo last update prices for flights from Portugal to San Francisco Airport?

How many operators does momondo search for flights from Portugal to San Francisco Airport?

How old do you have to be to fly from Portugal to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular plane model from Portugal to San Francisco?

Best airlines flying from Portugal to San Francisco

Compare and see reviews for airlines that fly from Portugal to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to San Francisco?

Can I find flights from Portugal to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from Portugal to San Francisco?

I’m not ready to book a flight from Portugal to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California