$343 Find Cheap Flights from San Francisco to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Portugal departing on 9/20. 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
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from San Francisco to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbonnonstop$534
Porto
Porto1 stop$644
Faro
Faro1 stop$680
Funchal
Funchal1 stop$719
Ponta Delgada
Ponta Delgada1 stop$684
Lajes
Lajes1 stop$672
Pico Island
Pico Island3 stops$1,132
Horta
Horta2 stops$1,083
Porto Santo
Porto Santo2 stops$1,855
Velas
Velas2 stops$1,169
Lisbon
Lisbonnonstop$534
Porto
Porto1 stop$644
Faro
Faro1 stop$680
Funchal
Funchal1 stop$719
Ponta Delgada
Ponta Delgada1 stop$684
Lajes
Lajes1 stop$672
Pico Island
Pico Island3 stops$1,132
Horta
Horta2 stops$1,083
Porto Santo
Porto Santo2 stops$1,855
Velas
Velas2 stops$1,169

Book Cheap San Francisco to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Portugal

Sat, Apr 18 - Fri, May 1
TAP AIR PORTUGAL Logo
7:35 pm - 2:50 pm
SFO
-
LIS
11h 15mnonstop
TAP AIR PORTUGAL Logo
12:20 pm - 4:50 pm
LIS
-
SFO
12h 30mnonstop
$534TAP AIR PORTUGAL
Fri, Apr 24 - Thu, Apr 30
TAP AIR PORTUGAL Logo
8:20 pm - 3:35 pm
SFO
-
LIS
11h 15mnonstop
TAP AIR PORTUGAL Logo
1:20 pm - 5:55 pm
LIS
-
SFO
12h 35mnonstop
$541TAP AIR PORTUGAL
Tue, Apr 28 - Tue, May 5
TAP AIR PORTUGAL Logo
4:35 pm - 11:50 am
SFO
-
LIS
11h 15mnonstop
TAP AIR PORTUGAL Logo
10:00 am - 2:35 pm
LIS
-
SFO
12h 35mnonstop
$542TAP AIR PORTUGAL
Wed, Apr 22 - Wed, Apr 29
Turkish Airlines Logo
6:45 pm - 3:45 pm
SFO
-
OPO
37h 00m
1 stop
Turkish Airlines Logo
4:40 pm - 10:50 am
OPO
-
SFO
26h 10m
1 stop
$644Turkish Airlines
Tue, Apr 28 - Tue, May 5
Turkish Airlines Logo
6:45 pm - 11:30 pm
SFO
-
OPO
20h 45m
1 stop
Turkish Airlines Logo
4:50 pm - 4:40 pm
OPO
-
SFO
31h 50m
1 stop
$653Turkish Airlines
Thu, Apr 30 - Thu, May 7
Scandinavian Airlines Logo
4:45 pm - 8:45 am
SFO
-
OPO
32h 00m
1 stop
Scandinavian Airlines Logo
10:25 am - 2:40 pm
OPO
-
SFO
36h 15m
1 stop
$696Scandinavian Airlines
Sun, Apr 12 - Mon, Apr 27
British Airways Logo
4:35 pm - 6:05 pm
SFO
-
FNC
17h 30m
1 stop
British Airways Logo
6:55 pm - 1:50 pm
FNC
-
SFO
26h 55m
1 stop
$719British Airways
Sun, Apr 12 - Mon, Apr 27
British Airways Logo
4:35 pm - 6:05 pm
SFO
-
FNC
17h 30m
1 stop
British Airways Logo
6:55 pm - 1:50 pm
FNC
-
SFO
26h 55m
1 stop
$757British Airways
Wed, Apr 29 - Tue, May 12
KLM Logo
1:10 pm - 7:30 pm
SFO
-
FAO
22h 20m
2 stops
KLM Logo
10:00 am - 11:45 am
FAO
-
SFO
33h 45m
1 stop
$828KLM
Wed, Apr 29 - Tue, May 12
KLM Logo
5:00 pm - 7:30 pm
SFO
-
FAO
18h 30m
2 stops
KLM Logo
8:15 pm - 3:56 pm
FAO
-
SFO
27h 41m
2 stops
$838KLM
Booking Insights

KAYAK's insights & trends for San Francisco to Portugal flights

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

What is the cheapest San Francisco to Portugal flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Portugal from San Francisco found in the last 72 hours was to Lisbon, at $494 round-trip. The most popular route is from San Francisco (SFO) to Lisbon (LIS), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $494.

What is the cheapest time of day to fly to Portugal?

The average price for all round-trip flights from San Francisco to Portugal depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Portugal is generally in the evening, when round-trip flights cost $693 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is $794.

Can I save money by flying with a layover from San Francisco to Portugal?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $936 on average.

What is the cheapest month to fly from San Francisco to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Portugal, 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 from San Francisco to Portugal is February, when tickets cost $610 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,125 and $934 respectively.

What’s the cheapest day of the week to fly from San Francisco to Portugal?

The average price of all round-trip flights from San Francisco to Portugal clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Francisco to Portugal, look for departures on Tuesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Portugal, Wednesday is the cheapest day to fly and Monday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Portugal, you should book around 2 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$364
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 23% increase in price.
Flight from San Francisco to Faro

FAQs - booking Portugal flights

  • Which airport should I fly into in Portugal?

    The airport you opt to fly into will depend on your destination. However, flying into Humberto Delgado Airport in Lisbon is usually most convenient. All flights from SFO to LIS are one-stop flights, while most flights to other airports have two stops. This shortens the duration of your flight to Portugal. Moreover, multiple airlines offer flights for this route, giving you more options. LIS also offers onsite health, family, and financial services.

  • What can I do during a layover at Humberto Delgado Airport?

    LIS has many convenient facilities and services. If you’re flying with kids, you can take them to the dedicated children’s playground at Terminal 1. You can also have a unique and relaxing experience during your layover by visiting the lounges at Terminal 1. You can enjoy a meal at the airport, as LIS has a selection of local Portuguese and international restaurants. You can also go shopping at the duty-free stores at the airport, where you can find great deals.

  • Which airport is closest to the Algarve beaches?

    If you plan on touring the beautiful beaches of Algarve, it's best to fly into Faro Airport (FAO). You can find cheap flights to FAO from SFO with Tap Air Portugal, Alaska Airlines, and Lufthansa. Flights into FAO have at least one, and usually two, stopovers. The flight can take from about 17h 30min up to 39h 45min. Faro Airport is only a few miles from the Algarve region, and you can easily get to the beaches by bus or taxi.

  • How can I get to the Lisbon city center from Humberto Delgado Airport?

    Humberto Delgado Airport is about four miles from the city center of Lisbon, the capital of Portugal. You can take the subway from Aeroporto Station, which is the most affordable means of transportation; the red metro line operates every few minutes to the city center and takes about 25min on average. Alternatively, you can catch Aerobus Express 91 in front of the airport to the city center.

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

    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 from San Francisco to Portugal.

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

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

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

    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 from San Francisco to Portugal 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 from San Francisco to Portugal?

    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 from San Francisco to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Portugal

  • San Francisco International Airport (SFO) has four terminals, with Terminals A and G serving flights to Portugal. All flights from SFO to Portugal have at least one layover en route.
  • If your flight to Portugal from SFO has been delayed, you can pass time at the airport by enjoying the art exhibitions, quietly reading a book in the reading room, or unwinding in the yoga room.
  • If you need medical attention after your flight to Humberto Delgado Airport (LIS) in Portugal, you can seek healthcare services at the various health stores and pharmacies at the airport.
  • You can drive yourself around Portugal with the latest car models from the rental car companies at the airports. Europcar, Goldcar, Guerin, and Hertz are some of the popular rental car companies at Portugal airports.
  • You may enter Portugal without a visa for stays of under 90 days. However, you must show a passport with three months validity from your intended departure date. It should also have at least two blank pages for the entry and exit stamps.

Reviews of the top 5 airlines serving from San Francisco to Portugal

 
Need help choosing which airline to fly with from San Francisco to Portugal? 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.
7.9
DeltaOverall score based on 8369 reviews
7.2Food
7.9Comfort
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

10.0 ExcellentLorna, Mar 2026
LAX - PDX
Read more Delta reviews

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

It was perfect! I've never flown with United before, but I definitely will in the future

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

it was a very short flight so my expectations were low.

Entertainment kept turning itself off. Gave up on watching a movie.

Very rude gate attendants in San Francisco who didn’t let me bring my little carry on (smaller than usual size) and after boarding I realized that there still were a lot of overhead compartment space (like a full section available in some spots). That made me lose 30 minutes at my destination at 1am and it could have broken something fragile that I had in it

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

They rescheduled me and I had no issues with the new flight

Horrible experience at tbe check in ladie she was very racist ,she doesn't speak portuguese too and forced me to check in my carrion bag and I saw everyone with carrion bag inside anda lot of space ,she was rude unprofessional

Departed late. Flight crew some of the most professional I have ever experienced. First time we’ve flown this airline

No difference between business class and normal same seat everything same, waste of money

They allowed me to book the flight, which took quite an effort to find the best option for us, and then 2 months later, cancelled it because they didn't think 90 minutes was enough time to get between connections. Why let me book the flight in the first place? I am somewhat disappointed in Kayak and will be choosing other options in the future

Absolutely unacceptable level of service for a Business class: lousy drink and food options, disgusting food (inedible meat, watery rice, etc...), pathetic level of attentiveness from staff, Business class restrooms were not accessible for long periods because blocked of by staff...overall extremely disappointing, will NEVER fly Business on TAP again.

Should really consider a better, smother boarding. Stood in tunnel for 20 plus minutes. Should start from back passengers of plane. Not front.

The plane was small and one felt the turbulence much more. The lines to get through immigration were insanely long.

First time flying Business with Tap, I think it was a very good experience. It beats many domestic US carriers, the food options were really great, authentic Portuguese food, wines & deserts. Next time will do the free 24-48 hour stopover in Lisbon or Porto for sure.

We upgraded to business class. Nice seat with lots of room but otherwise not impressive.

Delayed departure Madrid to Lisboa and my luggage no arrived

Wish the food and overall service was better. They treat Business class passengers same as economy

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Awful it always is unfortunately is the only way to fly direct to london

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Great crew and food and beverage. Seating tight but not the airline's fault. Will definitely fly BA in future!

Everything you need to know for your flight from San Francisco to Portugal

Information on your arrival and departure airports