$307 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 1/22. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from San Francisco to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$542
Porto
Porto2 stops$448
Ponta Delgada
Ponta Delgada1 stop$636
Faro
Faro2 stops$454
Funchal
Funchal2 stops$630
Lajes
Lajes1 stop$875
Horta
Horta2 stops$3,444
Porto Santo
Porto Santo1 stop$940
Velas
Velas2 stops$1,627
Lisbon
Lisbon2 stops$542
Porto
Porto2 stops$448
Ponta Delgada
Ponta Delgada1 stop$636
Faro
Faro2 stops$454
Funchal
Funchal2 stops$630
Lajes
Lajes1 stop$875
Horta
Horta2 stops$3,444
Porto Santo
Porto Santo1 stop$940
Velas
Velas2 stops$1,627

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

Thu, Mar 5 - Wed, Mar 18
Scandinavian Airlines Logo
7:00 am - 4:55 pmSFO-OPO
25h 55m2 stops
Scandinavian Airlines Logo
10:25 am - 3:35 pmOPO-SFO
36h 10m1 stop
$448Scandinavian Airlines
Find Deal
Fri, Dec 5 - Wed, Dec 10
Scandinavian Airlines Logo
7:00 am - 4:20 pmSFO-FAO
25h 20m2 stops
Scandinavian Airlines Logo
10:35 am - 2:35 pmFAO-SFO
36h 00m2 stops
$454Scandinavian Airlines
Find Deal
Sat, Nov 15 - Sun, Dec 7
United Airlines Logo
10:45 pm - 10:15 amSFO-LIS
27h 30m1 stop
United Airlines Logo
10:50 am - 1:30 pmLIS-SFO
34h 40m1 stop
$544United Airlines
Find Deal
Sun, Dec 14 - Thu, Dec 25
United Airlines Logo
8:35 am - 10:15 amSFO-LIS
17h 40m1 stop
United Airlines Logo
10:55 am - 7:28 amLIS-SFO
28h 33m2 stops
$545United Airlines
Find Deal
Sat, Feb 14 - Sat, Feb 21
Air Canada Logo
8:30 am - 8:55 amSFO-LIS
16h 25m2 stops
Air Canada Logo
11:20 am - 9:31 amLIS-SFO
30h 11m2 stops
$546Air Canada
Find Deal
Sat, Dec 13 - Thu, Dec 25
Air Canada Logo
6:55 pm - 9:20 amSFO-LIS
30h 25m2 stops
Air Canada Logo
10:55 am - 9:38 amLIS-SFO
30h 43m2 stops
$552Air Canada
Find Deal
Mon, Feb 23 - Mon, Mar 2
TAP AIR PORTUGAL Logo
4:35 pm - 7:00 pmSFO-OPO
18h 25m1 stop
TAP AIR PORTUGAL Logo
6:55 am - 2:35 pmOPO-SFO
15h 40m1 stop
$575TAP AIR PORTUGAL
Find Deal
Fri, Mar 6 - Mon, Mar 16
TAP AIR PORTUGAL Logo
7:10 pm - 6:00 pmSFO-OPO
14h 50m1 stop
TAP AIR PORTUGAL Logo
6:55 am - 3:35 pmOPO-SFO
15h 40m1 stop
$587TAP AIR PORTUGAL
Find Deal
Wed, Apr 1 - Wed, Apr 8
British Airways Logo
4:35 pm - 11:10 pmSFO-LIS
22h 35m1 stop
British Airways Logo
11:05 am - 6:50 pmLIS-SFO
15h 45m1 stop
$590British Airways
Find Deal
Sun, Nov 30 - Sun, Dec 7
British Airways Logo
8:40 pm - 2:15 pmSFO-FNC
33h 35m1 stop
British Airways Logo
12:55 pm - 3:00 pmFNC-SFO
34h 05m1 stop
$690British Airways
Find Deal
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 $332 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 $332.

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 $927 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 January, when tickets cost $669 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,099 and $1,026 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 Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Portugal, Tuesday is the cheapest day to fly and Saturday 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 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$307
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 31% increase in price.
Flight from San Francisco to Porto

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.

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

    The cheapest time of day to fly to Portugal is generally in the evening, when round-trip flights cost $768 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $969.

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 8002 reviews
7.9Entertainment
7.3Food
8.2Boarding
7.9Comfort
8.5Crew
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

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,

It was a smooth flight both in the sky and landing!

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Fare was great, seat comfort the opposite as cushion was worn out. Ok for 2 hour flight, not for 4.5 hour flight..

Fair. What's the point of partnering with United if we cannot use the lounge. My wife is a frequent flier with United but we were refused access to Air Canada lounge

Real smooth and easy, Real good leg room in coach!

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Did not enjoy the meal provided. The aircraft was dirty. For instance, the screen seemed to have been cleaned with a dirty rag. Disgusting.

The business class seats were smaller and closer together than other airlines.

Boarding- Good Seat Comfort - OK Crew - Good Food - Mediocre On Time - Very Good

Didn't like much. Wheelchair assistance was almost nonexistent. No one at TAP check in process helpful. On the plane, stewards were not friendly and disorganized. Food was terrible for 8 hr flight. We were skipped at snack time and even though we tried to get attention using overhead call system no one even looked up at us to acknowledge. Being at the back of first section and by the lavatory we only were able to request when they came to pick up everyone else's garbage and they were nonchalant...no apology or even choice. The 1/2 half bread with slice of cheese was a waste. Deplaning was horrible but I'll blame lisbon airport for that. Plane left late at made good time still arrived about 15 behind schedule and for using remote deplaning and bus to terminal took another 20 min to gate. Those with connections were highly stressed. Took us 2 hrs from landing to get to ground transportation and exit airport. And that was with wheelchair assistance.

Bad boarding, threat to force bag check mid journey, lines, late, buses, more waiting awful end to end.

Check in was excellent thanks to the team at the check in counter. I was disappointed to see that one has to pay for coffee on the flight. This is the first time I have seen that after 60 years of flying.

Our steward Margarida who served us from Lisbon to Boston was absolutely fantastic! She deserves a raise. Conscientious and thorough as well as showing appropriate attention for every need.

An old airplane with very uncomfortable seats in the Comfort “class! Small, narrow, and hard seat. Entertainment options are inferior, old movies. Boarding started at the back of the airplane, as we entered the aircraft last instead of after business class, risking the possibility that the comfort section would not have room for carry-on in the overhead bin. The food was ok. White wine was terrible. Overall, the flight felt worse than cheap airliners, and the price was as high as premium carriers.

I will avoid TAP if I can, the ground experience was very poor with bad behaviour from the ground crew and it was only a bit better on the aircraft.

I had a business class ticket from EWR to Madrid with a layover at LIS for 11 hours. It was obvious that I needed to pick up my luggage in Lisbon for 11 hours and check it in again when boarding the second flight to Madrid. Before buying the ticket, I called TAP customer service. Customer service assured me that I could get my luggage in Lisbon. When I arrived at Newark airport, I immediately asked to check my luggage to Lisbon. However, the TAP employee refused me, saying that I should resolve this issue upon arrival in Lisbon. She checked my luggage to Madrid. I asked the TAP employee at the gate to help me when boarding the plane, I asked the flight attendants manager on board the plane to help me. All the employees refused to help me and said that I should resolve this issue in Lisbon. It took me 4 hours to resolve this issue in Lisbon. I arrived at 11am and they didn't give me my luggage until 3pm. As a result, I was so tired after a sleepless night on the plane and 4 hours on my feet at the airport and all my plans were ruined that I couldn't fly to Madrid. It was a terrible experiance,

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

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

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!

Crying baby the ENTIRE flight. Not your fault, but I paid 2700 for a premium economy ticket and it wasn't worth it. should have just stuck with coach. flight attendants very mediocre - minimal effort. Plane didn't seem very clean. Didn't have any cleansing wipes - most airlines give you this when you board. Flat screen scrolling didn't work. Toiletry case a joke - why bother at all?

Enjoyable flight, helpful crew everything was organized to accommodate passengers.

The on flight entertainment system touch screen system and the USB charger did not work on multiple seats on least 4 seats an in different rows. The attendant tried to reset the system but was un successful. I couldn't change my phone to get my ticket for my next flight. This was an international flight I changed seats and the problem was the same. the flight attendant offered his power bank

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The check-in of my luggage was terrible. When purchased my tickets, one luggage and one carry-on was part of the fight. My flight was switched from British to American Airline. During check-in of luggage at the airport, I was denied and had to pay extra $75. How do I get reimbursed for this extra luggage payment?

This was the second time on BA, food terrible, bathrooms gross,( granted, that was mostly due to the disgusting children urinating all over it)boarding was late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress. Seats were painful, that's what you get for traveling like a poor in economy, right BA? Should have been able to afford business or first class if you want to actually be able to walk upright without back pain after a trip.

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