What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

How often are flights from San Francisco to Portugal delayed?

Historically, on average around 24% of flights between San Francisco and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

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

Brussels Airlines, Lufthansa, and American Airlines are the most popular carriers operating from San Francisco to Portugal

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

6 flights are operational weekly from San Francisco to Portugal as of December 2025. The most popular departure day for this route is Wed, with 50% of flights per week taking off on this day.

Which airline has the best punctuality record on San Francisco to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 24% of their flights experiencing any sort of delay.

What is the most punctual flight time for San Francisco to Portugal flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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 51% 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.

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 December 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.

$349 Cheap Flights from San Francisco to Portugal in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:03 pm - 10:50 am

SFO

FAO

34h 47m2 stops

11:40 am - 10:54 pm

FAO

SFO

43h 14m2 stops

$483Scandinavian Airlines

Sun, Feb 1 - Tue, Feb 10

12:50 pm - 3:15 pm

SFO

LIS

18h 25m2 stops

7:45 am - 7:35 pm

LIS

SFO

19h 50m1 stop

$505Lufthansa

Wed, Jan 7 - Fri, Jan 16

8:30 am - 9:20 am

SFO

LIS

16h 50m1 stop

10:55 am - 9:39 pm

LIS

SFO

18h 44m1 stop

$508Air Canada

Wed, Jan 28 - Fri, Feb 6

8:25 am - 9:20 am

SFO

LIS

16h 55m1 stop

5:00 am - 3:55 pm

LIS

SFO

18h 55m1 stop

$509United Airlines

Thu, Jan 8 - Thu, Jan 15

7:30 am - 9:20 am

SFO

LIS

17h 50m2 stops

6:10 am - 9:38 am

LIS

SFO

35h 28m2 stops

$511Air Canada

Thu, Jan 15 - Tue, Jan 20

5:30 pm - 5:40 pm

SFO

LIS

16h 10m1 stop

7:05 am - 3:00 pm

LIS

SFO

15h 55m1 stop

$512British Airways

Wed, Jan 7 - Tue, Jan 13

11:35 pm - 8:10 am

SFO

LIS

24h 35m2 stops

10:15 am - 7:55 pm

LIS

SFO

17h 40m1 stop

$514United Airlines

Sun, Jan 4 - Tue, Jan 13

8:40 pm - 3:10 pm

SFO

FNC

34h 30m1 stop

4:00 pm - 6:45 pm

FNC

SFO

34h 45m1 stop

$540British Airways

Mon, Jan 12 - Wed, Jan 28

4:35 pm - 5:00 pm

SFO

OPO

16h 25m1 stop

6:55 am - 2:35 pm

OPO

SFO

15h 40m1 stop

$576TAP AIR PORTUGAL

Mon, Feb 23 - Mon, Mar 2

4:35 pm - 10:00 pm

SFO

OPO

21h 25m1 stop

8:00 pm - 2:30 pm

OPO

SFO

26h 30m1 stop

$578TAP AIR PORTUGAL

Mon, Jan 19 - Tue, Jan 27

Delta flights from San Francisco to Portugal

Our best Delta deals on San Francisco to Portugal flight tickets

Delta

Feb 7

SFO9:30 pmSan Francisco

33h 40m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Feb 19

LIS5:30 amLisbon Humberto Delgado

22h 57m

2 stops

SFO8:27 pmSan Francisco

$516

Find similar

Delta

Jan 24

SFO6:00 amSan Francisco

18h 00m

2 stops

LIS8:00 amLisbon Humberto Delgado

Feb 6

LIS5:30 amLisbon Humberto Delgado

21h 50m

2 stops

SFO7:20 pmSan Francisco

$520

Find similar

Delta

Mar 24

SFO7:25 amSan Francisco

20h 55m

2 stops

LIS11:20 amLisbon Humberto Delgado

Apr 7

LIS5:00 amLisbon Humberto Delgado

14h 45m

1 stop

SFO11:45 amSan Francisco

$528

Find similar

KLM flights from San Francisco to Portugal

Our best KLM deals on San Francisco to Portugal flight tickets

KLM

Feb 12

SFO1:55 pmSan Francisco

20h 50m

1 stop

LIS6:45 pmLisbon Humberto Delgado

Feb 16

LIS3:30 pmLisbon Humberto Delgado

28h 20m

1 stop

SFO11:50 amSan Francisco

$518

Find similar

KLM

Jan 22

SFO1:55 pmSan Francisco

19h 15m

1 stop

FNC5:10 pmFunchal Madeira

Jan 29

FNC10:20 amFunchal Madeira

33h 30m

1 stop

SFO11:50 amSan Francisco

$519

Find similar

KLM

Jan 22

SFO11:02 amSan Francisco

22h 08m

2 stops

FNC5:10 pmFunchal Madeira

Jan 29

FNC10:20 amFunchal Madeira

33h 30m

1 stop

SFO11:50 amSan Francisco

$524

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

Sun 2/1

4:03 pm-10:50 am

2 stops34h 47m

Faro

Tue 2/10

11:40 am-10:54 pm

2 stops43h 14m

$483

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 1/7

12:50 pm-3:15 pm

2 stops18h 25m

Lisbon Humberto Delgado

Fri 1/16

7:45 am-7:35 pm

1 stop19h 50m

$505

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 1/28

8:30 am-9:20 am

1 stop16h 50m

Lisbon Humberto Delgado

Fri 2/6

10:55 am-9:39 pm

1 stop18h 44m

$508

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 1/8

8:25 am-9:20 am

1 stop16h 55m

Lisbon Humberto Delgado

Thu 1/15

5:00 am-3:55 pm

1 stop18h 55m

$509

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 1/15

7:30 am-9:20 am

2 stops17h 50m

Lisbon Humberto Delgado

Tue 1/20

6:10 am-9:38 am

2 stops35h 28m

$511

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 1/7

5:30 pm-5:40 pm

1 stop16h 10m

Lisbon Humberto Delgado

Tue 1/13

7:05 am-3:00 pm

1 stop15h 55m

$512

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 1/4

11:35 pm-8:10 am

2 stops24h 35m

Lisbon Humberto Delgado

Tue 1/13

10:15 am-7:55 pm

1 stop17h 40m

$514

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Mon 1/12

8:40 pm-3:10 pm

1 stop34h 30m

Funchal Madeira

Wed 1/28

4:00 pm-6:45 pm

1 stop34h 45m

$540

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 2/23

4:35 pm-5:00 pm

1 stop16h 25m

Porto

Mon 3/2

6:55 am-2:35 pm

1 stop15h 40m

$576

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 1/19

4:35 pm-10:00 pm

1 stop21h 25m

Porto

Tue 1/27

8:00 pm-2:30 pm

1 stop26h 30m

$578

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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

Delays

Other information

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from San Francisco is in January. Flight prices, which tend to average around $657, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from San Francisco during February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $662.

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 $684. 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 Friday, with ticket prices averaging around $858.

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 $753. 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 $818 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 $776 on momondo.

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

There are 3 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?

No. A direct flight is the cheapest option for a flight between San Francisco to Portugal.

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	$399
Fastest flight time	9h 45m
Direct flights	Tue, Wed, Thu, Sat and Sun
Airports in Portugal	99 airports

The best one-way flight to Portugal from San Francisco in the past 72 hours is $399. The best round-trip flight deal from San Francisco to Portugal found on momondo in the last 72 hours is $506.

The fastest flight from San Francisco to Portugal takes 9h 45m

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

There are 99 airports in Portugal. From San Francisco there are direct flights to Lajes (TER), 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 December 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 (28.51% of total bookings). The next most popular plane models are Boeing 777 (22.75%), Boeing 777-300ER (12.26%), and Boeing 787-9 Dreamliner (7.72%).

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 0.0	Search LEVEL flights
Iberia	PriceFrom $363	Free Cancellation	Rating 7.0 3,045 reviews	Search Iberia flights
Scandinavian Airlines	PriceFrom $409	Free Cancellation	Rating 7.4 1,605 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $489	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,626 reviews	Search Lufthansa flights
Air France	PriceFrom $505	Free Cancellation	Rating 7.4 1,504 reviews	Search Air France flights
British Airways	PriceFrom $517	Free Cancellation	Rating 6.7 7,571 reviews	Search British Airways flights
United Airlines	PriceFrom $518	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
Vueling	PriceFrom $532	Free Cancellation	Rating 7.1 1,219 reviews	Search Vueling flights
Delta	PriceFrom $549	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta 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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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $366

Flights to Portofrom $346

Flights to Funchalfrom $418

Flights to Farofrom $409

Flights to Ponta Delgadafrom $403

Flights to Lajesfrom $484

Flights to Hortafrom $576

Flights to Pico Islandfrom $561

Flights to Porto Santofrom $554

Flights to Velasfrom $612

Cheap flights from San Francisco to Portugal from $239

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 1/24. 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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Delta flights from San Francisco to Portugal

Our best Delta deals on San Francisco to Portugal flight tickets

KLM flights from San Francisco to Portugal

Our best KLM deals on San Francisco to Portugal flight tickets

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See travel insights to Portugal from

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

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 $753. 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 3 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?

No. A direct flight is the cheapest option for a flight between San Francisco to Portugal.

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

Brussels Airlines, Lufthansa, and American Airlines are the most popular carriers operating from San Francisco to Portugal

What airlines fly to Portugal?

How often are flights from San Francisco to Portugal delayed?

Historically, on average around 24% of flights between San Francisco and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

What is the most punctual flight time for San Francisco to Portugal flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Monday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on San Francisco to Portugal flights?

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 24% of their flights experiencing any sort of delay.

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

6 flights are operational weekly from San Francisco to Portugal as of December 2025. The most popular departure day for this route is Wed, with 50% 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