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Cheap flights from Portugal to San Francisco from $332

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 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portugal to San Francisco

Recent round-trip flight deals from Portugal to San Francisco

Logo
10:45 pm - 2:30 pmLIS-SFO
23h 45m2 stops
Logo
4:30 pm - 11:40 pmSFO-LIS
23h 10m2 stops
$558
Find Deal
Mon, Sep 8 - Mon, Sep 22
Logo
7:00 pm - 2:35 pmLIS-SFO
27h 35m1 stop
Logo
4:40 pm - 4:05 pmSFO-LIS
15h 25m1 stop
$578
Find Deal
Wed, Nov 12 - Sun, Nov 16
TAP AIR PORTUGAL Logo
7:00 am - 2:30 pmOPO-SFO
15h 30m1 stop
TAP AIR PORTUGAL Logo
4:20 pm - 8:25 pmSFO-OPO
20h 05m1 stop
$660TAP AIR PORTUGAL
Find Deal
Thu, Aug 28 - Wed, Sep 10
TAP AIR PORTUGAL Logo
9:15 pm - 2:30 pmOPO-SFO
25h 15m1 stop
TAP AIR PORTUGAL Logo
7:35 pm - 10:00 pmSFO-OPO
19h 25m1 stop
$663TAP AIR PORTUGAL
Find Deal
Sun, Oct 19 - Sat, Oct 25
Delta Logo
5:00 am - 11:45 amLIS-SFO
14h 45m1 stop
Delta Logo
3:50 pm - 3:10 pmSFO-LIS
15h 20m1 stop
$673Delta
Find Deal
Thu, Sep 11 - Fri, Dec 5
Delta Logo
5:00 am - 11:45 amLIS-SFO
14h 45m1 stop
Delta Logo
3:05 pm - 2:50 pmSFO-LIS
15h 45m1 stop
$677Delta
Find Deal
Thu, Sep 11 - Wed, Sep 24
British Airways Logo
11:05 am - 9:46 pmLIS-SFO
18h 41m1 stop
British Airways Logo
1:34 pm - 10:25 pmSFO-LIS
24h 51m2 stops
$688British Airways
Find Deal
Fri, Sep 12 - Fri, Dec 5
British Airways Logo
11:05 am - 11:15 amLIS-SFO
32h 10m1 stop
British Airways Logo
4:37 pm - 11:10 pmSFO-LIS
22h 33m2 stops
$692British Airways
Find Deal
Tue, Aug 26 - Mon, Sep 15
United Airlines Logo
6:00 am - 7:55 pmOPO-SFO
21h 55m1 stop
United Airlines Logo
9:15 pm - 6:55 amSFO-OPO
25h 40m1 stop
$710United Airlines
Find Deal
Thu, Sep 4 - Fri, Sep 19
United Airlines Logo
12:30 pm - 8:10 pmOPO-SFO
15h 40m1 stop
United Airlines Logo
11:00 am - 2:45 pmSFO-OPO
19h 45m2 stops
$712United Airlines
Find Deal
Wed, Dec 31 - Tue, Feb 10

Delta flights from Portugal to San Francisco

Our best Delta deals on Portugal to San Francisco flight tickets
Delta
Sep 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SFO11:45 amSan Francisco
Dec 5
SFO3:50 pmSan Francisco
15h 20m
1 stop
LIS3:10 pmLisbon Humberto Delgado
$673
Find similar
Delta
Sep 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SFO11:45 amSan Francisco
Sep 24
SFO3:05 pmSan Francisco
15h 45m
1 stop
LIS2:50 pmLisbon Humberto Delgado
$677
Find similar
Delta
Sep 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SFO11:45 amSan Francisco
Sep 24
SFO7:05 amSan Francisco
20h 10m
2 stops
LIS11:15 amLisbon Humberto Delgado
$678
Find similar

Scandinavian Airlines flights from Portugal to San Francisco

Our best Scandinavian Airlines deals on Portugal to San Francisco flight tickets
Scandinavian Airlines
Oct 8
OPO11:50 amPorto
36h 40m
1 stop
SFO4:30 pmSan Francisco
Oct 13
SFO7:40 pmSan Francisco
31h 20m
1 stop
OPO11:00 amPorto
$594
Find similar
Scandinavian Airlines
Nov 12
LIS4:55 pmLisbon Humberto Delgado
29h 40m
1 stop
SFO2:35 pmSan Francisco
Nov 16
SFO4:40 pmSan Francisco
15h 25m
1 stop
LIS4:05 pmLisbon Humberto Delgado
$597
Find similar
Scandinavian Airlines
Nov 12
LIS7:05 amLisbon Humberto Delgado
24h 08m
2 stops
SFO11:13 pmSan Francisco
Nov 16
SFO4:40 pmSan Francisco
15h 25m
1 stop
LIS4:05 pmLisbon Humberto Delgado
$627
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portugal 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, momondo users made 832,500 searches. Data last updated August 2, 2025.
Use the filters below to find and compare flights from Portugal to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Mon 9/8

10:45 pm-2:30 pm

2 stops23h 45m

San Francisco

Mon 9/22

4:30 pm-11:40 pm

2 stops23h 10m

$558

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 11/12

7:00 pm-2:35 pm

1 stop27h 35m

San Francisco

Sun 11/16

4:40 pm-4:05 pm

1 stop15h 25m

$578

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 8/28

7:00 am-2:30 pm

1 stop15h 30m

San Francisco

Wed 9/10

4:20 pm-8:25 pm

1 stop20h 05m

$660

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sun 10/19

9:15 pm-2:30 pm

1 stop25h 15m

San Francisco

Sat 10/25

7:35 pm-10:00 pm

1 stop19h 25m

$663

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 9/11

5:00 am-11:45 am

1 stop14h 45m

San Francisco

Fri 12/5

3:50 pm-3:10 pm

1 stop15h 20m

$673

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Thu 9/11

5:00 am-11:45 am

1 stop14h 45m

San Francisco

Wed 9/24

3:05 pm-2:50 pm

1 stop15h 45m

$677

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Fri 9/12

11:05 am-9:46 pm

1 stop18h 41m

San Francisco

Fri 12/5

1:34 pm-10:25 pm

2 stops24h 51m

$688

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Tue 8/26

11:05 am-11:15 am

1 stop32h 10m

San Francisco

Mon 9/15

4:37 pm-11:10 pm

2 stops22h 33m

$692

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Thu 9/4

6:00 am-7:55 pm

1 stop21h 55m

San Francisco

Fri 9/19

9:15 pm-6:55 am

1 stop25h 40m

$710

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 12/31

12:30 pm-8:10 pm

1 stop15h 40m

San Francisco

Tue 2/10

11:00 am-2:45 pm

2 stops19h 45m

$712

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September is also cheap. Prices for this month can be found on momondo for an average of $770.

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 $811. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $1,211.

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 $1,561.

What is the cheapest Portugal to San Francisco flight route?

Fly from Lajes 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 $822 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 $702 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 35% 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

$332

Fastest flight time

14h 45m

Direct flights

Tue, Wed, 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 $332. The best round-trip flight deal from Portugal to San Francisco found on momondo in the last 72 hours is $558.
The fastest flight from Portugal to San Francisco takes 14h 45m
Direct flights go from Portugal to San Francisco on Tuesday, Wednesday, Friday and Sunday. Airlines offering direct flights are: TAP AIR PORTUGAL and JetBlue.
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?

  • 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?

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
LEVELPriceFrom $473Free CancellationRating
4.0
4 reviews
Search LEVEL flights
British AirwaysPriceFrom $572Free CancellationRating
6.6
7,224 reviews
Search British Airways flights
DeltaPriceFrom $587Free CancellationRating
8.0
7,983 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom $606Free CancellationRating
7.1
1,936 reviews
Search TAP AIR PORTUGAL flights
Air FrancePriceFrom $657Free CancellationRating
7.5
1,465 reviews
Search Air France flights
United AirlinesPriceFrom $657Free CancellationRating
7.4
8,904 reviews
Search United Airlines flights
LufthansaPriceFrom $659Free CancellationRating
6.8
7,276 reviews
Search Lufthansa flights
American AirlinesPriceFrom $668Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Calistoga
Hayward
Bodega Bay
Sonoma
Roseville
Santa Clara
Big Sur
Daly City
Berkeley
Walnut Creek
Fremont
Half Moon Bay
South San Francisco
Redwood City
Vallejo
Sunnyvale
Pacific Grove

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.

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