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$265 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 6/10. 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
sáb. 6/29
sáb. 7/6

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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 42,686,544 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 $720. On the other hand, the most expensive day to fly is Sunday, where prices are $970 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 $1,167 and $943 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 $760.

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 $572 one-way - $914 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 1,577 per week, followed by Alaska Airlines with 708 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 15h 50m, and Funchal, which takes 39h 28m.

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

There are around 480 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 45% of flights departing in the morning.

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

Each week there are around 3,360 direct flights from within Portugal to San Francisco. The most common day for departures is Thursday, 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 7 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 7 direct flights each week.

Good to know

Low season

January

High season

August

Cheapest flight

$265
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Porto 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 $808. 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 10457 reviews
8.2Boarding
8.0Entertainment
7.4Food
8.6Crew
7.9Comfort
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

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.

Efficiency was great - on-time takeoff and landing. Baggage arrived at destination (there's always slow baggage handling in Boston.) TAP food is spartan - bring your own. But the efficiency of the airline more than makes up for the mediocre cuisine.

On-time flight. Nothing out of the ordinary. The food offering upfront could be better.

Delayed takeoff was inconvenient. We should have boardrd later. Coffee/ beverage service on a 7:30 flight would have been good.

Flight from Lisbon to Barcelona was ok. Business flight Boston to Lisbon was awful. Attendants should pay more attention to Business Passengers and not be so stingy with water. Worse Business Flight I have ever taken. Food was awful. Cramped for space.

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

Crew was very nice and helpful. It was a good flight experience.

Efficient boarding. Good flight but seats were quite uncomfortable considering we'd already been sitting on two flights, total 13 hours or so. Would have liked to have prices on the menu of amenities on the plane. We could have used more water. Restrooms and nonalcoholic beverages at no extra cost, not much else. I realize these were discount tickets, and the airline has to break even, so I can't say we were expecting amenities to be plentiful. Still, it's nice with long flights to discover a few. Very pleasant crew though.

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Crew was super rude in business class. Not friendly or helpful. Luggage was damaged and was told to file with United and that was unsuccessful.

The connection at Frankfurt was chaotic and nearly missed the flight to Atlanta. They made was wait for busses to transfer and it took ages

There was a screaming child just behind our seats. This prevented us from getting any sleep during the night!!

my flight was at 3:45 after that they delayed to 4:40 I have transit from Chicago to Frankfurt and Frankfurt to vina airport from vina to Erbil buy the Time I come to Frankfort my other flight left me I have to stay at airport all day with my 5 kids ask for help no one help me I spent at airport almost $450 just for food was horrible flight ever I call and ask for hotel from united customer service they been telling me we can’t provide any hotel I need some refund or fixed my flight when I return to America need some one respond my email

My experience would have been greatly improved by arriving on time to connect to my Porto flight. The staff that dealt with the aftermath of the late arrival evidently booked my group into a hotel in Frankfurt. This reduced my time in Porto Portugal a day and half. I do want to commend Jorge Klein for his hard work. He spent a great deal.of time trying to rebook the flight and he eventually did rebook for the next day and did provide accommodations for me overnight. This was a big issue for me and the group I traveled. The rest of the trip was good.

Not your fault…..didn’t get my drink until just before landing….bumpy flight.

There was nothing to like besides the crew. The comfort of the airplane was poor (seat did not work properly and it was not comfortable). The “entertainment” system did not work! On a flight that last nearly eight hours, (which is advertised as having excellent entertainment options), that is unacceptable! Passengers should have been given free WiFi for the flight. The food served on the flight was below school lunch grade food. (With one exception, the ice cream snack). The chicken entree was tough and nearly impossible to cut and eat. The “pizza” served later in the flight was worse. The chicken pizza had a dry crust and the “toppings” were equally not enjoyable. The amount of chicken and cheese were almost non existent. Overall not a flight we would want to repeat!!

There was a problem in the luggage because there were not porters

2-1/2 hours on tarmac after arrival to DFW, lost connection to London, 3 hours wait for customer assistance, stayed on our own account in DFW, no replacement flight for 5 days, had to cancel the entire travel and return to Monterrey today.

My worst flying experience so far. This flight was delayed a total of 42 hours and diverted to New York before it was finally cancelled. It was delayed 4 and a half hours in London. As we were scanning our boarding passes at the gate they advised that the flight was being diverted to JFK since the delays caused us to missed the open hours for Charlotte international customs and immigration. We were assured multiple times by airport personnel, flight attendants, and the Pilot that we would land at JFK go through customs and immigration and then reboard the plane to fly to Charlotte in the same night. When we landed in New York the pilot advised us as we were retrieving our carry on luggage that we were delayed till 10am the next morning and to see guest services to get a room for the night. During this time I had to purchase a room for a family member in Charlotte which drove over 4 and a half hours to pick us up from Charlotte. This could have been avoided if American Airlines had been up front about the delay. Then after standing in line for over 2 and a half hours at guest services we were taken by taxi to a hotel 30 minutes out of the way. Luckily I looked for other flights that night and found one at 8 am to get on. The initial flight which we were scheduled to fly to charlotte in was delayed 12 more times and was finally cancelled 42 hours after it was supposed to land. I am unaware of what happened to the guest that were supposed to fly on the flight after we were placed on another flight but 42 hours in delays for a direct flight is absolutely ridiculous.

The boarding to Gatwick was a breeze but the boarding from Gatwick was a nightmare. The onboard service to Gatwick had a lot to be desired but the onboard sevice from Gatwick was amazing ! Very nice,friendly and funny ! Would I recommend BA to anyone.? ! Yes I would!

Is it American Airlines or British Airways? This is so confusing. I got it from Portugal.

Appreciate free wine and entertainment plus good meals. Also leg room

Really quick check in and security at Heathrow Terminal 5. Staff on board were lovely and very friendly. Could have provided a few more drinks on the flight but they were available at the back of the plane.

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

It was a flight operated by Aer Linus for BA and the plane and crew were very good but the food selection was average.

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.
9/9lun.
1 stopTAP AIR PORTUGAL
24h 15mOPO-SFO
9/16lun.
1 stopTAP AIR PORTUGAL
14h 05mSFO-OPO
$642
9/28sáb.
1 stopVueling
17h 00mLIS-SFO
10/12sáb.
1 stopVueling
28h 20mSFO-LIS
$661
11/13mié.
2 stopsDelta
21h 50mLIS-SFO
11/19mar.
2 stopsDelta
21h 20mSFO-LIS
$673
10/10jue.
1 stopDelta
14h 45mLIS-SFO
11/7jue.
2 stopsDelta
20h 40mSFO-LIS
$674
11/25lun.
1 stopBritish Airways
20h 54mLIS-SFO
12/4mié.
2 stopsBritish Airways
17h 45mSFO-LIS
$682
10/7lun.
1 stopBritish Airways
26h 30mLIS-SFO
11/9sáb.
1 stopBritish Airways
17h 25mSFO-LIS
$684
10/28lun.
2 stopsAmerican Airlines
20h 14mLIS-SFO
11/11lun.
1 stopAmerican Airlines
18h 10mSFO-LIS
$703
11/24dom.
2 stopsAmerican Airlines
20h 00mLIS-SFO
12/3mar.
2 stopsAmerican Airlines
21h 19mSFO-LIS
$705
6/18mar.
1 stopUnited Airlines
14h 40mOPO-SFO
7/22lun.
1 stopUnited Airlines
15h 55mSFO-OPO
$850
6/11mar.
2 stopsUnited Airlines
19h 40mOPO-SFO
7/11jue.
2 stopsUnited Airlines
16h 25mSFO-OPO
$857

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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.
6/10lun.
3 stops
58h 34mOPO-SFO
$265
6/10lun.
2 stops
46h 29mOPO-SFO
$339
6/14vie.
1 stop
27h 35mOPO-SFO
$340
6/10lun.
2 stopsTAP AIR PORTUGAL
26h 50mOPO-SFO
$456
6/14vie.
2 stopsTAP AIR PORTUGAL
26h 35mOPO-SFO
$557
9/4mié.
2 stopsBritish Airways
32h 50mOPO-SFO
$586
8/28mié.
2 stopsBritish Airways
19h 33mOPO-SFO
$596
8/30vie.
2 stopsAmerican Airlines
30h 48mOPO-SFO
$615
9/1dom.
2 stopsAmerican Airlines
29h 27mOPO-SFO
$661
8/30vie.
2 stopsDelta
40h 27mFNC-SFO
$1,457

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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.
6/1sáb.
multi-stopAmerican Airlines
19h 36mLIS-SFO
6/19mié.
multi-stopAmerican Airlines
26h 07mSFO-LIS
$743
6/3lun.
multi-stopAmerican Airlines
21h 26mLIS-SFO
6/15sáb.
multi-stopAmerican Airlines
26h 07mSFO-LIS
$770
6/3lun.
multi-stopAmerican Airlines
19h 00mLIS-SFO
6/15sáb.
multi-stopAmerican Airlines
20h 18mSFO-LIS
$798
5/31vie.
multi-stopBritish Airways
19h 00mLIS-SFO
6/19mié.
multi-stopBritish Airways
18h 15mSFO-LIS
$831
6/1sáb.
multi-stopBritish Airways
32h 55mLIS-SFO
6/19mié.
multi-stopBritish Airways
18h 15mSFO-LIS
$914
6/3lun.
multi-stop
54h 50mLIS-SFO
7/4jue.
nonstop
11h 05mSFO-LIS
$927
6/3lun.
multi-stop
28h 05mLIS-SFO
6/15sáb.
multi-stop
21h 10mSFO-LIS
$936
6/1sáb.
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
6/19mié.
nonstopTAP AIR PORTUGAL
11h 05mSFO-LIS
$1,276
5/31vie.
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
6/19mié.
nonstopTAP AIR PORTUGAL
11h 05mSFO-LIS
$1,312
5/31vie.
multi-stopCathay Pacific
48h 10mLIS-SFO
6/18mar.
multi-stopCathay Pacific
49h 15mSFO-LIS
$15,279

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Flights to San Francisco

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Portugal

Cabin classes:

$2,512
$2,409
$758