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$285 Find cheap flights from Portugal to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
mar. 6/4
mar. 6/11

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco
These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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Flights to San Francisco - Travel Insights & Trends

Get data-powered insights and trends for flights to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to San Francisco?

The average price of all flights to San Francisco clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to San Francisco is Thursday where tickets can be as cheap as $723. On the other hand, the most expensive day to fly is Sunday, where prices are $936 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights to San Francisco is February, where tickets cost $651 on average for one-way flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Portugal is $1,173 and $945 respectively. For return trips, the best month to travel is February with an average price of $651.

What is the cheapest time of day to fly to San Francisco?

The average price for all flights to San Francisco depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to San Francisco is generally at night, when flights cost $678 on average. The most expensive time of day to fly to San Francisco is generally in the morning, which is peak travel time and where the average cost of a ticket is $771.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Lisbon $628 one-way - $962 round-trip.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 38 days before departure.

Which airline offers the most flights to San Francisco?

Of the 10 airlines that fly to San Francisco, United Airlines offers the most flights, with around 2,040 per week, followed by Alaska Airlines with 638 flights per week.

How long is the flight to San Francisco?

The duration of your flight to San Francisco depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to San Francisco on KAYAK are from Lisbon, which takes 12h 40m, Porto, which takes 17h 35m, and Funchal, which takes 31h 12m.

How many direct flights to San Francisco are there each day?

There are around 552 direct flights from within Portugal to San Francisco every day. Most flights depart in the morning, with 6:00 am the most common departure time and 46% of flights departing in the morning.

How many direct flights to San Francisco are there each week?

Each week there are around 3,864 direct flights from within Portugal to San Francisco. The most common day for departures is Wednesday, with 15% of flights taking off on this day.

How many long-haul flights are there to San Francisco each week?

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to San Francisco. Instead, there are 5 long-haul flights (6-12 hour flight duration), with the most arriving from Lisbon.

How many cities have direct flights to San Francisco?

From Portugal, there are direct flights to San Francisco from 1 city. This city is Lisbon and there are 5 direct flights each week.

Good to know

Low season

February

High season

August

Cheapest flight

$285
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Lisbon to San Francisco

FAQs - booking San Francisco flights

  • How far is San Francisco from central San Francisco?

    There are 12 miles between San Francisco city center and San Francisco.

  • What is the name of San Francisco’s airport?

    When flying to San Francisco, you'll arrive at San Francisco (SFO). The airport is also known as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $964. The cheapest price found on KAYAK in the last 2 weeks cost $557 and departed from Lisbon Humberto Delgado Airport.

  • How does KAYAK find such low prices on flights to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to San Francisco

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Prefer to fly non-stop to San Francisco?

Find which airlines fly direct to San Francisco, which days they fly and book direct flights.

Nonstop departures

Portugal to San Francisco

Monday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Tuesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Wednesday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

AIR PREMIA, ANA, Aer Lingus, +81 more

AIR PREMIA, ANA, +82 more

See more direct flights

Nonstop returns

San Francisco to Portugal

Monday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Tuesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Wednesday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

AIR PREMIA, ANA, Aer Lingus, +81 more

AIR PREMIA, ANA, +82 more

See more direct flights
See more direct flights

Top 5 airlines serving from Portugal to San Francisco

 
See real verified KAYAK customer reviews for airlines flying to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to San Francisco. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10826 reviews
8.2Boarding
8.0Entertainment
8.6Crew
7.4Food
7.9Comfort
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Space and comfort was good. Staff could have been more helpful and friendly.

Crew was not friendly when I went to request a seat change.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

American Airlines canceled the flight twice and was unable to facilitate a change of city for us after our travel plans became affected. We lost alot of money due to this and it seems like the airline was trying their best not to facilitate this. Mind you, I am a very loyal member.

Adequate. You get what you pay for. Absolutely no frills but a cost effective way to travel between European countries.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

I wish to bring to your attention an incident involving a flight attendant that occurred on my recent journey. The attendant displayed a lack of courtesy, which was concerning. For instance, after accidentally spilling water on a passenger, the attendant dismissed the situation rather than offering a proper apology. Additionally, when I handed over my trash, the attendant reacted negatively because I placed a paper cup on the tray, she told me this doesn't go here and threw it back on my table. It was apparent that she was experiencing a challenging day, which unfortunately impacted the service provided to myself and other passengers. While I understand that everyone can have an off day, it is essential for customer-facing staff to seek support to manage personal stress without it affecting their professional responsibilities.

The flight crew was good, the flight itself was quick and comfortable

Boarding was late by 30 min due to a bus missing to take us to the plane... And then the flight was delayed by about 90 minutes, in a 60 min flight

Very agressive with bags both arrival and departures found minor damage to my luggage including my check bag being broken into nothing of value was in there so I do not believe anything was taken but definitely broken zipper into the outer pockets of suitcase

Everything was nearly perfect, and TAP staff were especially helpful when we missed our connecting flights and had to get on the next flight to Rome. The only aspect that could have been better was boarding: it was somewhat disorganized, which created a bit of stress. But in the end, everyone got on the plane, so the less-then-perfect boarding process did not take away from the overall excellent experience.

TAP Air makes you take a bus on arrival or departure, making it difficult for passengers to make connections.

Two of three flight attendants were not super kind as I would expect. The very kind young lady in my section was wonderful but then lady and man up front were not. Sorry but it makes a difference !

Great staff who were ready working with smile 6 in the morning on New Year’s Day. Although security checkpoint was way too busy, the airline staff were understanding and waited few minutes after boarding. We took off not only exactly on time, but arrived 20 minutes early. Two thumbs up!!!

Touchscreens do not work. WiFi did not work. Food is possibly the worst on any European airline. Drinks came by only four times on a cross-Atlantic. The plane was two hours late because—it was announced—Lufthansa didn't have enough large aircraft in their fleet to accommodate an on-time flight.

It was freezing in the airplane. Everyone was wearing everything they had with them. The crew acknowledged it was cold, but did nothing about it

The flight attendants were superb and the service was outstanding. Some passengers with small children were very rude and inconsiderate, kids were constantly crying and some were running around the aisle unsupervised.

Terrible. There was a rattling noise the whole flight. The internet didn't work after I paid. Boarding is very disorganized.

Horrible flight attendant in back of economy that screamed at me, have already reported to United. Horrible food - for Gluten free, why would you assume the person is vegetarian? I was served some kind of horrible curry bean paste and multiple cold rolls and soggy vegetables with no seasoning... um no!

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

Sorry my last review for prg to fra was for this flight. My prg to fra flight was fine but my second flight back to Washington DC was with a slow awful crew who wouldn’t come in a timely manner to take trash and take trash before serving coffee tea and was shoving other people’s bottles of water on me when we were not traveling together

Lufthansa was amazing. Definitely upgrade your seat if you can swing it - they take very good care of their passengers. Customs in DC is nothing short of a nightmare though. Stood in line waiting to go back through security for 30 minutes, had to RUN through and across two terminals to make my connection and only had 5 minutes to spare. Terrible. Very very poor coordination by the airport staff and CBP.

I was ver pleased with the service all the way through

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

Spending 10 hours on a flight with no video or wifi access due to issues per stewardess was not enjoyable nor acceptable. Will follow up directly with the airline as well

I really did not like being ordered to pull my shade down by the attendants. One of them was very rude to me about it, standing there until I closed it like I was a child brusquely reaching across me to close an adjoining one. They claim it was so people who wanted to could sleep. It’s a 10:30am flight not a red eye. Closing your shade or leaving it up for natural light should be a choice. Ruined my flight!

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Book cheap flights from Portugal to San Francisco

Recent round-trip flight deals

 
These are the cheapest round-trip flights to San Francisco found on KAYAK in the last 72 hours.
5/16jue.
1 stop
15h 45mLIS-SFO
5/20lun.
1 stop
23h 45mSFO-LIS
$589
6/4mar.
2 stops
44h 04mLIS-SFO
7/16mar.
nonstop
11h 05mSFO-LIS
$599
6/4mar.
2 stopsDelta
22h 58mLIS-SFO
7/16mar.
2 stopsDelta
18h 51mSFO-LIS
$624
6/6jue.
1 stopDelta
14h 45mLIS-SFO
7/18jue.
1 stopDelta
19h 35mSFO-LIS
$625
10/20dom.
1 stopBritish Airways
28h 00mLIS-SFO
10/31jue.
1 stopBritish Airways
21h 25mSFO-LIS
$650
6/3lun.
2 stopsAmerican Airlines
19h 36mLIS-SFO
6/10lun.
2 stopsAmerican Airlines
25h 35mSFO-LIS
$732
6/1sáb.
1 stopBritish Airways
26h 15mLIS-SFO
6/19mié.
2 stopsBritish Airways
18h 15mSFO-LIS
$746
5/29mié.
1 stopAmerican Airlines
35h 45mOPO-SFO
6/3lun.
2 stopsAmerican Airlines
23h 16mSFO-OPO
$752
6/22sáb.
1 stopTAP AIR PORTUGAL
16h 25mFNC-SFO
7/7dom.
1 stopTAP AIR PORTUGAL
14h 55mSFO-FNC
$2,723
6/22sáb.
1 stopTAP AIR PORTUGAL
16h 25mFNC-SFO
7/4jue.
1 stopTAP AIR PORTUGAL
14h 55mSFO-FNC
$2,779

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to San Francisco found on KAYAK in the last 72 hours.
9/25mié.
1 stopVueling
28h 05mLIS-SFO
$285
9/18mié.
1 stopVueling
28h 05mLIS-SFO
$298
10/20dom.
1 stopBritish Airways
26h 30mLIS-SFO
$587
6/14vie.
2 stopsAmerican Airlines
24h 16mOPO-SFO
$591
6/18mar.
3 stopsAmerican Airlines
30h 43mLIS-SFO
$598
5/16jue.
2 stopsTAP AIR PORTUGAL
26h 50mOPO-SFO
$606
5/22mié.
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
$640
6/2dom.
1 stopBritish Airways
26h 30mLIS-SFO
$655
8/20mar.
2 stopsDelta
25h 03mOPO-SFO
$872
6/28vie.
2 stopsDelta
21h 38mLIS-SFO
$877

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Last minute flights to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to San Francisco that are departing in the next 10 days.
5/9jue.
multi-stop
16h 37mLIS-SFO
5/12dom.
multi-stop
19h 30mSFO-LIS
$854
5/9jue.
multi-stop
29h 45mLIS-SFO
5/12dom.
multi-stop
21h 34mSFO-LIS
$927
5/9jue.
multi-stopSWISS
39h 25mLIS-SFO
5/12dom.
multi-stopSWISS
37h 35mSFO-LIS
$953
5/9jue.
multi-stop
34h 20mLIS-SFO
5/12dom.
multi-stop
19h 30mSFO-LIS
$1,379

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Flights to San Francisco

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Portugal

Cabin classes:

$2,308
$2,409
$785