How popular is this Portugal to San Francisco flight route?

This flight path from Portugal to San Francisco was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Portugal to San Francisco?

There are many flights that can get you from Portugal to San Francisco in 18h 57m. Fly via TAP AIR PORTUGAL, Delta, or KLM to get the fastest option. Airlines will cover a distance of 5664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular routes from Portugal to San Francisco?

The most popular flight routes from Portugal to San Francisco are Lisbon Humberto Delgado - San Francisco, Porto - San Francisco and Funchal Madeira - San Francisco.

What are the cheapest flights from Portugal to San Francisco?

While on average a flight from Portugal to San Francisco is generally $1,197, our data shows the cheapest flight currently is $500. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay $615 for that flight.

What are the most reliable airlines from Portugal to San Francisco?

No one likes to see their flight delayed. When booking a flight from Portugal to San Francisco consider choosing Etihad Airways (67%), JetBlue (62%) or TAP AIR PORTUGAL (62%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Portugal to San Francisco?

When booking a flight from Portugal to San Francisco, you may want to consider flying on TAP AIR PORTUGAL, British Airways or Delta as they are the most popular for this route.

What airport do you fly into for flights to San Francisco from Portugal?

For a flight from Portugal to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city.

Can I find deals for flights from Portugal to San Francisco that include hotel bookings?

Yes. In addition to deals on Portugal to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portugal to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to San Francisco.

Can I find deals for business class flights from Portugal to San Francisco?

Yes. Cheapflights offers flight deals from Portugal 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.

$414+ Cheap Flights from Portugal to San Francisco

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Find flight deals from Portugal to San Francisco

Cheapest flights from Portugal to San Francisco
Explore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Fri 11/149:00 amOPO - SFO

1 stop15h 05mTAP AIR PORTUGAL

Fri 11/287:10 pmSFO - OPO

1 stop14h 50mTAP AIR PORTUGAL

Deal found 10/27

$596

Wed 11/128:05 pmOPO - SFO

2 stops25h 20mMultiple Airlines

Sun 11/161:55 pmSFO - OPO

2 stops25h 05mMultiple Airlines

Deal found 10/27

$663

Tue 12/24:05 pmOPO - SFO

2 stops27h 45mMultiple Airlines

Tue 12/91:55 pmSFO - OPO

2 stops21h 30mMultiple Airlines

Deal found 10/27

$666

Sun 12/144:55 pmLIS - SFO

1 stop29h 40mScandinavian Airlines

Sun 12/284:40 pmSFO - LIS

1 stop15h 25mScandinavian Airlines

Deal found 10/27

$669

Sat 11/225:00 amLIS - SFO

1 stop15h 40mMultiple Airlines

Sat 12/67:25 pmSFO - LIS

1 stop31h 35mMultiple Airlines

Deal found 10/28

$678

Tue 12/24:05 pmLIS - SFO

2 stops27h 45mMultiple Airlines

Tue 12/91:55 pmSFO - LIS

2 stops23h 05mMultiple Airlines

Deal found 10/27

$685

Tue 12/212:00 pmOPO - SFO

1 stop34h 30mTAP AIR PORTUGAL

Sat 12/64:35 pmSFO - OPO

1 stop21h 25mTAP AIR PORTUGAL

Deal found 10/27

$703

Fri 11/146:30 amOPO - SFO

2 stops25h 29mDelta

Fri 11/285:45 amSFO - OPO

2 stops20h 45mDelta

Deal found 10/27

$715

Tue 12/23:30 pmLIS - SFO

1 stop28h 20mMultiple Airlines

Sun 12/73:40 pmSFO - LIS

1 stop17h 50mMultiple Airlines

Deal found 10/27

$718

Thu 11/205:00 amLIS - SFO

1 stop15h 40mLufthansa

Thu 11/272:40 pmSFO - LIS

1 stop16h 25mLufthansa

Deal found 10/28

$723

Thu 12/45:00 amLIS - SFO

2 stops18h 57mMultiple Airlines

Sun 12/73:40 pmSFO - LIS

1 stop15h 30mMultiple Airlines

Deal found 10/27

$724

Thu 11/63:30 pmLIS - SFO

1 stop28h 20mMultiple Airlines

Sat 12/63:40 pmSFO - LIS

1 stop17h 50mMultiple Airlines

Deal found 10/27

$728

Best flights from Portugal to San Francisco
Discover carefully curated flight deals from Portugal to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2025.

Mon 4/2010:35 pmOPO - SFO

1 stop24h 00mTAP AIR PORTUGAL

Tue 5/54:35 pmSFO - OPO

1 stop24h 05mTAP AIR PORTUGAL

Deal found 10/28

$596

Tue 12/24:05 pmOPO - SFO

2 stops27h 45mMultiple Airlines

Tue 12/91:55 pmSFO - OPO

2 stops21h 30mMultiple Airlines

Deal found 10/27

$666

Fri 12/54:10 pmOPO - SFO

1 stop27h 40mKLM

Thu 12/111:55 pmSFO - OPO

1 stop15h 25mKLM

Deal found 10/27

$715

Fri 11/146:30 amOPO - SFO

2 stops25h 29mDelta

Fri 11/285:45 amSFO - OPO

2 stops20h 45mDelta

Deal found 10/27

$715

Wed 12/311:05 amLIS - SFO

1 stop16h 19mBritish Airways

Tue 12/912:00 pmSFO - LIS

2 stops21h 40mBritish Airways

Deal found 10/27

$734

Sun 2/153:20 pmFNC - SFO

1 stop32h 35mLufthansa

Sat 2/218:25 amSFO - FNC

2 stops22h 05mLufthansa

Deal found 10/27

$876

Sat 1/104:10 pmFNC - SFO

1 stop30h 25mScandinavian Airlines

Thu 1/154:40 pmSFO - FNC

1 stop38h 40mScandinavian Airlines

Deal found 10/27

$999

Fri 11/149:00 amOPO - SFO

1 stop15h 05mTAP AIR PORTUGAL

Fri 11/287:10 pmSFO - OPO

1 stop14h 50mTAP AIR PORTUGAL

Deal found 10/27

$596

Wed 11/1212:45 pmOPO - SFO

3 stops31h 55mMultiple Airlines

Sun 11/167:25 pmSFO - OPO

2 stops19h 35mMultiple Airlines

Deal found 10/27

$668

Fri 4/37:20 pmFNC - SFO

1 stop30h 15mTAP AIR PORTUGAL

Fri 4/178:20 pmSFO - FNC

1 stop16h 40mTAP AIR PORTUGAL

Deal found 10/27

$626

Wed 12/35:00 amLIS - SFO

2 stops23h 28mDelta

Mon 12/85:50 amSFO - LIS

2 stops21h 30mDelta

Deal found 10/27

$724

Thu 12/45:00 amLIS - SFO

2 stops18h 57mKLM

Mon 12/87:15 amSFO - LIS

2 stops16h 45mKLM

Deal found 10/27

$733

Sat 4/254:50 pmOPO - SFO

1 stop33h 10mMultiple Airlines

Sun 5/107:45 pmSFO - OPO

1 stop28h 15mMultiple Airlines

Deal found 10/28

$701

Thu 12/45:00 amLIS - SFO

2 stops18h 57mKLM

Sun 12/78:15 amSFO - LIS

2 stops15h 45mKLM

Deal found 10/27

$733

Thu 11/135:00 amLIS - SFO

2 stops23h 36mDelta

Sun 11/1610:30 amSFO - LIS

2 stops20h 40mDelta

Deal found 10/28

$736

Tue 12/212:00 pmOPO - SFO

1 stop34h 30mTAP AIR PORTUGAL

Sat 12/64:35 pmSFO - OPO

1 stop21h 25mTAP AIR PORTUGAL

Deal found 10/27

$703

Thu 12/45:00 amLIS - SFO

2 stops18h 57mMultiple Airlines

Tue 12/93:40 pmSFO - LIS

1 stop15h 30mMultiple Airlines

Deal found 10/27

$724

Fri 1/235:00 amLIS - SFO

2 stops18h 58mDelta

Fri 1/3011:02 amSFO - LIS

2 stops20h 08mDelta

Deal found 10/28

$736

Fri 1/235:00 amLIS - SFO

2 stops19h 01mKLM

Sat 1/316:00 amSFO - LIS

2 stops18h 00mKLM

Deal found 10/28

$740

Thu 2/125:10 pmFNC - SFO

1 stop29h 50mBritish Airways

Sat 2/215:30 pmSFO - FNC

1 stop34h 00mBritish Airways

Deal found 10/27

$919

Fri 1/235:00 amLIS - SFO

2 stops19h 01mMultiple Airlines

Fri 1/303:40 pmSFO - LIS

1 stop15h 30mMultiple Airlines

Deal found 10/28

$736

Fri 4/35:40 amLIS - SFO

1 stop15h 10mDelta

Mon 4/131:00 pmSFO - LIS

2 stops20h 50mDelta

Deal found 10/27

$736

Thu 2/1210:20 amFNC - SFO

1 stop33h 30mKLM

Sun 2/224:15 pmSFO - FNC

2 stops57h 20mKLM

Deal found 10/27

$759

Thu 11/205:30 amLIS - SFO

1 stop15h 55mDelta

Thu 11/277:05 amSFO - LIS

2 stops20h 15mDelta

Deal found 10/28

$737

Sat 11/225:30 amLIS - SFO

2 stops18h 27mMultiple Airlines

Sat 12/68:15 amSFO - LIS

2 stops16h 45mMultiple Airlines

Deal found 10/27

$739

Mon 1/1210:25 amFNC - SFO

1 stop33h 25mKLM

Fri 1/1610:35 amSFO - FNC

2 stops23h 15mKLM

Deal found 10/27

$851

Sun 1/119:15 pmFNC - SFO

1 stop25h 20mTAP AIR PORTUGAL

Wed 1/144:35 pmSFO - FNC

1 stop22h 20mTAP AIR PORTUGAL

Deal found 10/27

$1,196

Sat 1/106:40 pmFNC - SFO

1 stop25h 10mKLM

Fri 1/161:55 pmSFO - FNC

1 stop19h 55mKLM

Deal found 10/27

$1,021

Sat 2/144:10 amFNC - SFO

2 stops24h 00mMultiple Airlines

Sat 2/217:30 amSFO - FNC

3 stops29h 50mMultiple Airlines

Deal found 10/27

$1,076

Last-minute flights from Portugal to San Francisco
Discover last-minute flight deals from Portugal to San Francisco. Data last updated October 29, 2025 and is based on user searches.

Wed 11/53:30 pmLIS - SFO

1 stop28h 20mKLM

Wed 11/261:55 pmSFO - LIS

1 stop16h 40mKLM

Deal found 10/27

$734

Thu 11/63:30 pmLIS - SFO

1 stop28h 20mMultiple Airlines

Sat 12/63:40 pmSFO - LIS

1 stop17h 50mMultiple Airlines

Deal found 10/27

$728

Thu 11/610:55 amLIS - SFO

1 stop19h 16mBritish Airways

Sat 12/612:10 pmSFO - LIS

2 stops18h 40mBritish Airways

Deal found 10/27

$733

Thu 11/65:00 amLIS - SFO

2 stops19h 05mDelta

Sat 12/69:50 amSFO - LIS

2 stops17h 30mDelta

Deal found 10/27

$735

Wed 11/128:05 pmOPO - SFO

2 stops25h 20mMultiple Airlines

Sun 11/161:55 pmSFO - OPO

2 stops25h 05mMultiple Airlines

Deal found 10/27

$663

Fri 11/149:00 amOPO - SFO

1 stop15h 05mTAP AIR PORTUGAL

Fri 11/287:10 pmSFO - OPO

1 stop14h 50mTAP AIR PORTUGAL

Deal found 10/27

$596

Fri 11/146:30 amOPO - SFO

2 stops25h 29mDelta

Fri 11/285:45 amSFO - OPO

2 stops20h 45mDelta

Deal found 10/27

$715

Fri 11/146:30 amOPO - SFO

2 stops19h 39mMultiple Airlines

Fri 11/283:40 pmSFO - OPO

1 stop34h 50mMultiple Airlines

Deal found 10/29

$730

Wed 11/193:30 pmLIS - SFO

1 stop28h 20mMultiple Airlines

Mon 11/243:40 pmSFO - LIS

1 stop22h 45mMultiple Airlines

Deal found 10/28

$730

Thu 11/205:00 amLIS - SFO

1 stop15h 40mLufthansa

Thu 11/272:40 pmSFO - LIS

1 stop16h 25mLufthansa

Deal found 10/28

$723

Sat 11/225:00 amLIS - SFO

1 stop15h 40mMultiple Airlines

Sat 12/67:25 pmSFO - LIS

1 stop31h 35mMultiple Airlines

Deal found 10/28

$678

Sat 11/225:30 amLIS - SFO

1 stop15h 55mDelta

Sat 12/610:40 amSFO - LIS

2 stops20h 30mDelta

Deal found 10/27

$724

One-way flights from Portugal to San Francisco
Search for one-way flight options from Portugal to San Francisco. Find affordable one-way fares based on user searches. Data last updated October 29, 2025.

Sat 1/175:10 pmOPO - SFO

2 stops58h 17mMultiple Airlines

Deal found 10/28

$414

Fri 12/51:40 pmOPO - SFO

2 stops33h 05mMultiple Airlines

Deal found 10/28

$462

Thu 11/207:00 amLIS - SFO

3 stops46h 03mMultiple Airlines

Deal found 10/29

$486

Sun 12/710:40 amLIS - SFO

1 stop17h 30mMultiple Airlines

Deal found 10/28

$487

Mon 12/17:00 amLIS - SFO

2 stops37h 12mMultiple Airlines

Deal found 10/28

$488

Wed 11/196:40 amLIS - SFO

2 stops21h 30mMultiple Airlines

Deal found 10/27

$491

Sun 12/2111:05 amLIS - SFO

2 stops21h 27mMultiple Airlines

Deal found 10/26

$492

Wed 11/266:30 amLIS - SFO

2 stops21h 40mMultiple Airlines

Deal found 10/28

$493

Wed 4/111:05 amLIS - SFO

1 stop15h 52mAmerican Airlines

Deal found 10/28

$494

Fri 1/96:45 pmLIS - SFO

1 stop28h 15mBritish Airways

Deal found 10/28

$495

Wed 12/1710:40 amLIS - SFO

1 stop36h 20mBritish Airways

Deal found 10/28

$496

Fri 11/215:55 amLIS - SFO

3 stops47h 08mMultiple Airlines

Deal found 10/29

$498

Cheap flight deals from Portugal to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$596 (Ticket)
One-way from	$414 (Kiwi.com)
Popular in	January
Cheapest in	February
Average price	$831
Good round-trip deal	$754 or less
Good one-way deal	$564 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 Portugal to San Francisco

Search Deals

One-way flight from Portugal to San Francisco

Search Deals

High demand for flights, 1% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from Portugal to San Francisco.

Search Deals

Price to beat on a one-way flight from Portugal to San Francisco.

Search Deals

Cheapflights Fare Finder

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

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Mon 4/20

10:35 pm-2:35 pm

1 stop24h 00m

San Francisco

Tue 5/5

4:35 pm-12:40 am

1 stop24h 05m

$596

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 11/14

9:00 am-4:05 pm

1 stop15h 05m

San Francisco

Fri 11/28

7:10 pm-6:00 pm

1 stop14h 50m

$596

FunchalSan Francisco

FNC - SFO

FNCSFO

Funchal Madeira

Fri 4/3

7:20 pm-5:35 pm

1 stop30h 15m

San Francisco

Fri 4/17

8:20 pm-9:00 pm

1 stop16h 40m

$626

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Tue 12/2

4:05 pm-11:50 am

2 stops27h 45m

San Francisco

Tue 12/9

1:55 pm-7:25 pm

2 stops21h 30m

$666

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Wed 11/12

12:45 pm-12:40 pm

3 stops31h 55m

San Francisco

Sun 11/16

7:25 pm-11:00 pm

2 stops19h 35m

$668

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Sat 4/25

4:50 pm-6:00 pm

1 stop33h 10m

San Francisco

Sun 5/10

7:45 pm-8:00 am

1 stop28h 15m

$701

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Tue 12/2

12:00 pm-2:30 pm

1 stop34h 30m

San Francisco

Sat 12/6

4:35 pm-10:00 pm

1 stop21h 25m

$703

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 12/5

4:10 pm-11:50 am

1 stop27h 40m

San Francisco

Thu 12/11

1:55 pm-1:20 pm

1 stop15h 25m

$715

PortoSan Francisco

OPO - SFO

OPOSFO

Porto

Fri 11/14

6:30 am-11:59 pm

2 stops25h 29m

San Francisco

Fri 11/28

5:45 am-10:30 am

2 stops20h 45m

$715

LisbonSan Francisco

LIS - SFO

LISSFO

Lisbon Humberto Delgado

Wed 12/3

5:00 am-8:28 pm

2 stops23h 28m

San Francisco

Mon 12/8

5:50 am-11:20 am

2 stops21h 30m

$724

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 44 results

...

Best time to book a flight from Portugal to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Portugal 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 Portugal to San Francisco

What is the cheapest month to book a flight from Portugal to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $554). Flying from Portugal to San Francisco in August is currently the most expensive (average of $675). 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 PT to SFO?

A simple way to save on the total cost of your ticket is to fly from Portugal to San Francisco in the evening. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight at noon.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown Delta, United Airlines, and TAP AIR PORTUGAL from Portugal to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

7,993 reviews

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

7,993 reviews

Delta

7.9

Good

7,993 reviews

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

8,999 reviews

Delta

7.9

Good

7,993 reviews

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

2,037 reviews

Delta

7.9

Good

7,993 reviews

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

Lufthansa

6.8

Okay

7,541 reviews

Delta

7.9

Good

7,993 reviews

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

7,487 reviews

Delta

7.9

Good

7,993 reviews

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

What airport do you fly into for flights to San Francisco from Portugal?
For a flight from Portugal to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city.
How popular is this Portugal to San Francisco flight route?
This flight path from Portugal to San Francisco was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Portugal to San Francisco?
There are many flights that can get you from Portugal to San Francisco in 18h 57m. Fly via TAP AIR PORTUGAL, Delta, or KLM to get the fastest option. Airlines will cover a distance of 5664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the most popular routes from Portugal to San Francisco?
The most popular flight routes from Portugal to San Francisco are Lisbon Humberto Delgado - San Francisco, Porto - San Francisco and Funchal Madeira - San Francisco.
What are the most reliable airlines from Portugal to San Francisco?
No one likes to see their flight delayed. When booking a flight from Portugal to San Francisco consider choosing Etihad Airways (67%), JetBlue (62%) or TAP AIR PORTUGAL (62%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portugal to San Francisco?
While on average a flight from Portugal to San Francisco is generally $1,197, our data shows the cheapest flight currently is $500. When looking at the most popular route, (Lisbon Humberto Delgado - San Francisco), you can expect to pay $615 for that flight.
Can I find deals for flights from Portugal to San Francisco that include hotel bookings?
Yes. In addition to deals on Portugal to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to San Francisco.
Can I find deals for business class flights from Portugal to San Francisco?
Yes. Cheapflights offers flight deals from Portugal 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 Portugal to San Francisco?
Currently, February is the cheapest month in which you can book a flight from Portugal to San Francisco (average of $554). Flying from Portugal to San Francisco in August is currently the most expensive (average of $675). 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

Roseville

South San Francisco

Santa Cruz

Livermore

Turlock

Watsonville

Sunnyvale

Santa Clara

Antioch

Manteca

Vallejo

Hollister

Vacaville

San Bruno

Foster City

Redwood City

Union City

Fairfield

Burlingame

Lodi

Browse thousands of different options on Cheapflights for your next trip

Top 8 airlines flying from Portugal to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
LEVEL	Cheapest$473	Average$623	FlexibilityNo cancel fee	On-timeN/A
British Airways	Cheapest$572	Average$717	FlexibilityNo cancel fee	On-time70%
Delta	Cheapest$587	Average$744	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$613	Average$834	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$657	Average$829	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$668	Average$934	FlexibilityNo cancel fee	On-time71%
Lufthansa	Cheapest$670	Average$842	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$731	Average$893	FlexibilityNo cancel fee	On-time69%

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$414+ Cheap flights from Portugal 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.

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Find flight deals from Portugal to San Francisco

Cheapest flights from Portugal to San FranciscoExplore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Explore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Cheap flight deals from Portugal to San Francisco

Keep the following information in mind while searching for Portugal to San Francisco flight deals. Data was last updated October 29, 2025.

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Best time to book a flight from Portugal to San Francisco

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Find hourly flight availability from Portugal 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 October 29, 2025.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown Delta, United Airlines, and TAP AIR PORTUGAL from Portugal to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portugal to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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Alternative routes for Portugal to San Francisco

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Cheapest flights from Portugal to San Francisco
Explore the most affordable flight options available from Portugal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.