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

TAP AIR PORTUGAL is the most popular carrier operating from San Francisco to Portugal

What airlines fly to Portugal?

TAP AIR PORTUGAL, United Airlines and Air Canada are the top three most popular airlines that fly to Portugal from San Francisco according to our data. TAP AIR PORTUGAL is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 18 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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

5 flights are operational weekly from San Francisco to Portugal as of October 2025. The most popular departure day for this route is Wed, with 40% of flights per week taking off on this day.

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

Prices for flights from San Francisco Airport to Portugal are refreshed on a daily basis.

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

As of October 2025, there are 18 operators available to choose from for flights from San Francisco Airport to Portugal.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$250 Cheap Flights from San Francisco to Portugal in 2025/26

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Cheap round-trip flights

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4:40 pm - 9:45 amSFO-FAO

33h 05m2 stops

10:35 am - 2:35 pmFAO-SFO

36h 00m2 stops

$415Scandinavian Airlines

Find Deal

lun., dic. 1 - mié., dic. 10

4:40 pm - 10:00 amSFO-FAO

33h 20m1 stop

5:10 pm - 2:35 pmFAO-SFO

29h 25m1 stop

$446Scandinavian Airlines

Find Deal

dom., feb. 15 - sáb., feb. 21

6:00 am - 2:15 pmSFO-FNC

24h 15m2 stops

4:55 pm - 8:10 pmFNC-SFO

35h 15m2 stops

$555British Airways

Find Deal

lun., ene. 26 - lun., feb. 2

8:40 pm - 3:05 pmSFO-FNC

34h 25m1 stop

4:55 pm - 6:45 pmFNC-SFO

33h 50m1 stop

$563British Airways

Find Deal

lun., ene. 26 - lun., feb. 2

12:43 am - 10:15 amSFO-LIS

26h 32m2 stops

5:00 am - 12:40 pmLIS-SFO

15h 40m1 stop

$572United Airlines

Find Deal

mié., oct. 29 - mar., nov. 18

10:59 pm - 9:20 amSFO-LIS

50h 21m2 stops

12:20 pm - 12:40 pmLIS-SFO

32h 20m1 stop

$573United Airlines

Find Deal

vie., nov. 14 - sáb., nov. 22

5:35 pm - 11:35 amSFO-LIS

11h 00mnonstop

9:40 am - 2:30 pmLIS-SFO

12h 50mnonstop

$574TAP AIR PORTUGAL

Find Deal

lun., oct. 27 - mié., nov. 12

5:35 pm - 3:00 pmSFO-OPO

14h 25m1 stop

8:05 pm - 2:45 pmOPO-SFO

26h 40m1 stop

$577TAP AIR PORTUGAL

Find Deal

sáb., nov. 1 - vie., nov. 14

11:18 pm - 8:55 amSFO-LIS

25h 37m2 stops

11:20 am - 10:54 amLIS-SFO

31h 34m2 stops

$599Air Canada

Find Deal

lun., dic. 29 - mar., ene. 20

8:25 am - 12:05 pmSFO-OPO

19h 40m2 stops

6:00 am - 9:17 amOPO-SFO

35h 17m2 stops

$653Air Canada

Find Deal

dom., ene. 25 - mié., abr. 1

SWISS flights from San Francisco to Portugal

Our best SWISS deals on San Francisco to Portugal flight tickets

SWISS

Nov 9

SFO7:25 pmSan Francisco

33h 20m

2 stops

LIS12:45 pmLisbon Humberto Delgado

Dec 8

LIS2:20 pmLisbon Humberto Delgado

34h 10m

2 stops

SFO4:30 pmSan Francisco

$571

Find similar

SWISS

Oct 15

SFO7:30 pmSan Francisco

19h 50m

1 stop

LIS11:20 pmLisbon Humberto Delgado

Nov 15

LIS6:00 pmLisbon Humberto Delgado

30h 30m

2 stops

SFO4:30 pmSan Francisco

$579

Find similar

SWISS

Oct 7

SFO7:30 pmSan Francisco

19h 50m

1 stop

LIS11:20 pmLisbon Humberto Delgado

Oct 14

LIS2:30 pmLisbon Humberto Delgado

33h 40m

2 stops

SFO4:10 pmSan Francisco

$603

Find similar

United Airlines flights from San Francisco to Portugal

Our best United Airlines deals on San Francisco to Portugal flight tickets

United Airlines

Oct 29

SFO12:43 amSan Francisco

26h 32m

2 stops

LIS10:15 amLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

15h 40m

1 stop

SFO12:40 pmSan Francisco

$572

Find similar

United Airlines

Nov 14

SFO10:59 pmSan Francisco

50h 21m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 22

LIS12:20 pmLisbon Humberto Delgado

32h 20m

1 stop

SFO12:40 pmSan Francisco

$573

Find similar

United Airlines

Oct 25

SFO11:33 pmSan Francisco

26h 47m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 8

LIS5:00 amLisbon Humberto Delgado

15h 40m

1 stop

SFO12:40 pmSan Francisco

$578

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

lun. 12/1

4:40 pm-9:45 am

2 stops33h 05m

Faro

mié. 12/10

10:35 am-2:35 pm

2 stops36h 00m

$415

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

dom. 2/15

4:40 pm-10:00 am

1 stop33h 20m

Faro

sáb. 2/21

5:10 pm-2:35 pm

1 stop29h 25m

$446

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

lun. 1/26

6:00 am-2:15 pm

2 stops24h 15m

Funchal Madeira

lun. 2/2

4:55 pm-8:10 pm

2 stops35h 15m

$555

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

lun. 1/26

8:40 pm-3:05 pm

1 stop34h 25m

Funchal Madeira

lun. 2/2

4:55 pm-6:45 pm

1 stop33h 50m

$563

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

mié. 10/29

12:43 am-10:15 am

2 stops26h 32m

Lisbon Humberto Delgado

mar. 11/18

5:00 am-12:40 pm

1 stop15h 40m

$572

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

vie. 11/14

10:59 pm-9:20 am

2 stops50h 21m

Lisbon Humberto Delgado

sáb. 11/22

12:20 pm-12:40 pm

1 stop32h 20m

$573

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

lun. 10/27

5:35 pm-11:35 am

Nonstop11h 00m

Lisbon Humberto Delgado

mié. 11/12

9:40 am-2:30 pm

Nonstop12h 50m

$574

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

sáb. 11/1

5:35 pm-3:00 pm

1 stop14h 25m

Porto

vie. 11/14

8:05 pm-2:45 pm

1 stop26h 40m

$577

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

lun. 12/29

11:18 pm-8:55 am

2 stops25h 37m

Lisbon Humberto Delgado

mar. 1/20

11:20 am-10:54 am

2 stops31h 34m

$599

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

dom. 1/25

8:25 am-12:05 pm

2 stops19h 40m

Porto

mié. 4/1

6:00 am-9:17 am

2 stops35h 17m

$653

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 Portugal?

The cheapest month to fly to Portugal from San Francisco is in February. Flight prices, which tend to average around $670, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from San Francisco during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $676.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from San Francisco. The lowest ticket price found for a Wednesday departure recently was $704. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Sunday, with ticket prices averaging around $826.

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

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from San Francisco to Portugal during this time can be as low as $778. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $969 per ticket.

What is the cheapest San Francisco to Portugal flight route?

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

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $841 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from San Francisco for as low as $799 on momondo.

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

There are 4 cabin classes available to choose from on San Francisco to Portugal 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 San Francisco to Portugal flights?

You could potentially save up to 4% on your flight if you consider stops on a San Francisco to Portugal flight.

Cheap San Francisco to Portugal flight deals and tips

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

Best Price Found	$301
Fastest flight time	10h 55m
Direct flights	Tue, Thu, Sat and Sun
Airports in Portugal	1 airport

The best one-way flight to Portugal from San Francisco in the past 72 hours is $301. The best round-trip flight deal from San Francisco to Portugal found on momondo in the last 72 hours is $600.

The fastest flight from San Francisco to Portugal takes 10h 55m

Direct flights go from San Francisco to Portugal on Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport near Portugal: Lisbon Humberto Delgado (LIS)

Search flight deals

When did momondo last update prices for flights from San Francisco Airport to Portugal?
Prices for flights from San Francisco Airport to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Portugal?
As of October 2025, there are 18 operators available to choose from for flights from San Francisco Airport to Portugal.
How old do you have to be to fly from San Francisco Airport to Portugal?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to Portugal?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco to Portugal is Airbus A330-900neo (33.37% of total bookings). The next most popular plane models are Boeing 777 (20.75%), Boeing 777-300ER (9.21%), and Airbus A330-200 (8.55%).

Best airlines flying from San Francisco to Portugal

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

Airline	Rating	Free Cancellation	Price
LEVEL	PriceFrom $351	Free Cancellation	Rating 4.0 4 reviews	Search LEVEL flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.4 1,514 reviews	Search Scandinavian Airlines flights
Iberia	PriceFrom $469	Free Cancellation	Rating 7.0 2,967 reviews	Search Iberia flights
KLM	PriceFrom $497	Free Cancellation	Rating 7.8 1,389 reviews	Search KLM flights
Vueling	PriceFrom $532	Free Cancellation	Rating 7.1 1,192 reviews	Search Vueling flights
British Airways	PriceFrom $545	Free Cancellation	Rating 6.7 7,415 reviews	Search British Airways flights
Lufthansa	PriceFrom $550	Free Cancellation	Rating 6.8 7,444 reviews	Search Lufthansa flights
Virgin Atlantic	PriceFrom $555	Free Cancellation	Rating 7.4 665 reviews	Search Virgin Atlantic flights
Air France	PriceFrom $566	Free Cancellation	Rating 7.4 1,467 reviews	Search Air France flights
TAP AIR PORTUGAL	PriceFrom $570	Free Cancellation	Rating 7.1 2,000 reviews	Search TAP AIR PORTUGAL flights

Why use momondo?

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

It is quick and easy to find San Francisco to Portugal flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Portugal that suits you.

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

Yes. All flights to Portugal from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for San Francisco to Portugal 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 San Francisco to Portugal right now. Can momondo alert me if prices change?

If you are not ready to book a flight from San Francisco to Portugal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portugal and let you know when they change.

An easier way to manage your Portugal 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.

Start using Trips

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sáb. 11/1

sáb. 11/8

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $317

Flights to Portofrom $345

Flights to Funchalfrom $411

Flights to Farofrom $398

Flights to Ponta Delgadafrom $431

Flights to Lajesfrom $476

Flights to Hortafrom $490

Flights to Pico Islandfrom $481

Flights to Porto Santofrom $694

Flights to Velasfrom $534

Cheap flights from San Francisco to Portugal from $250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Portugal departing on 10/13. 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

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from San Francisco to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

SWISS flights from San Francisco to Portugal

Our best SWISS deals on San Francisco to Portugal flight tickets

United Airlines flights from San Francisco to Portugal

Our best United Airlines deals on San Francisco to Portugal flight tickets

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

See travel insights to Portugal from

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

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 Portugal?

What is the cheapest day to depart on your flight to Portugal?

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

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from San Francisco to Portugal during this time can be as low as $778. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $969 per ticket.

What is the cheapest San Francisco to Portugal flight route?

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

How far in advance should I book a flight to Portugal?

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

There are 4 cabin classes available to choose from on San Francisco to Portugal 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 San Francisco to Portugal flights?

You could potentially save up to 4% on your flight if you consider stops on a San Francisco to Portugal flight.

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

TAP AIR PORTUGAL is the most popular carrier operating from San Francisco to Portugal

What airlines fly to Portugal?

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

5 flights are operational weekly from San Francisco to Portugal as of October 2025. The most popular departure day for this route is Wed, with 40% of flights per week taking off on this day.

Cheap San Francisco to Portugal flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

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

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

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

What documentation or ID do you need to fly to Portugal?

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

Best airlines flying from San Francisco to Portugal

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

Why use momondo?

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

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

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

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

An easier way to manage your Portugal 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 Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo