$325 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 9/6. 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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Cheap Flights from San Francisco to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$909
Porto
Porto1 stop$733
Faro
Faro1 stop$751
Funchal
Funchal2 stops$624
Ponta Delgada
Ponta Delgada1 stop$789
Lajes
Lajes1 stop$840
Pico Island
Pico Island2 stops$1,130
Horta
Horta2 stops$1,217
Porto Santo
Porto Santo3 stops$1,252
Vila do Porto
Vila do Porto2 stops$1,142
Velas
Velas2 stops$1,074
Lisbon
Lisbon1 stop$909
Porto
Porto1 stop$733
Faro
Faro1 stop$751
Funchal
Funchal2 stops$624
Ponta Delgada
Ponta Delgada1 stop$789
Lajes
Lajes1 stop$840
Pico Island
Pico Island2 stops$1,130
Horta
Horta2 stops$1,217
Porto Santo
Porto Santo3 stops$1,252
Vila do Porto
Vila do Porto2 stops$1,142
Velas
Velas2 stops$1,074

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, Nov 12 - Tue, Nov 17
Scandinavian Airlines Logo
4:45 pm - 1:45 pm
SFO
-
FNC
37h 00m
2 stops
Scandinavian Airlines Logo
3:55 pm - 2:50 pm
FNC
-
SFO
30h 55m
2 stops
$624Scandinavian Airlines
Mon, Oct 19 - Sun, Nov 1
Scandinavian Airlines Logo
4:45 pm - 11:00 am
SFO
-
OPO
34h 15m
1 stop
Scandinavian Airlines Logo
5:35 pm - 2:50 pm
OPO
-
SFO
29h 15m
1 stop
$733Scandinavian Airlines
Wed, Nov 11 - Wed, Nov 18
KLM Logo
1:50 pm - 1:50 pm
SFO
-
FAO
16h 00m
1 stop
KLM Logo
2:40 pm - 11:45 am
FAO
-
SFO
29h 05m
1 stop
$751KLM
Thu, Sep 24 - Thu, Oct 1
TAP AIR PORTUGAL Logo
4:30 pm - 5:20 pm
SFO
-
FAO
16h 50m
1 stop
TAP AIR PORTUGAL Logo
6:05 am - 2:30 pm
FAO
-
SFO
16h 25m
1 stop
$785TAP AIR PORTUGAL
Sat, Sep 26 - Thu, Oct 1
TAP AIR PORTUGAL Logo
7:35 pm - 5:20 pm
SFO
-
FAO
13h 45m
1 stop
TAP AIR PORTUGAL Logo
6:05 am - 2:30 pm
FAO
-
SFO
16h 25m
1 stop
$804TAP AIR PORTUGAL
Mon, Aug 10 - Wed, Aug 26
Air Canada Logo
7:30 pm - 8:20 am
SFO
-
PDL
29h 50m
2 stops
Air Canada Logo
9:35 am - 9:02 pm
PDL
-
SFO
18h 27m
1 stop
$811Air Canada
Sun, Aug 16 - Tue, Sep 1
United Airlines Logo
6:00 am - 8:40 am
SFO
-
PDL
19h 40m
1 stop
United Airlines Logo
11:00 am - 5:48 pm
PDL
-
SFO
13h 48m
1 stop
$829United Airlines
Tue, Aug 4 - Wed, Sep 16
United Airlines Logo
12:35 pm - 8:40 am
SFO
-
PDL
13h 05m
1 stop
United Airlines Logo
11:00 am - 9:15 pm
PDL
-
SFO
17h 15m
1 stop
$837United Airlines
Mon, Aug 31 - Mon, Sep 7
Delta Logo
10:59 pm - 8:00 am
SFO
-
LIS
25h 01m
2 stops
Delta Logo
11:55 am - 11:45 am
LIS
-
SFO
31h 50m
1 stop
$911Delta
Fri, Aug 14 - Wed, Aug 19
Delta Logo
2:36 pm - 5:50 pm
SFO
-
LIS
19h 14m
2 stops
Delta Logo
11:55 am - 11:58 pm
LIS
-
SFO
20h 03m
2 stops
$912Delta
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 5 days was to Lisbon, at $652 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 5 days was $652.

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 $703 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 $807.

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 1 stop layover the cheapest option at $1,417 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 $409 (return) on average. On the other hand, the most expensive months are May and March, when the average cost of round-trip tickets is $3,649 and $2,680 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, Friday 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 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$325
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from San Francisco to Ponta Delgada

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.

  • How many flights are there between San Francisco and Portugal per day?

    There is a maximum of 1 nonstop flight a day that takes off from San Francisco and lands in Portugal, with an average flight time of 10h 32m. The most common departure time is 4:00 pm and most flights take off in the afternoon. Each week, there are 5 flights.

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.
7.8
DeltaOverall score based on 8455 reviews
7.8Entertainment
8.5Crew
7.8Comfort
8.1Boarding
7.2Food
Airline reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

2.0 MediocreTravis, Jun 2026
SFO - LAX
Read more Delta reviews

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

New boarding doesn't make sense. Filling front first is slow.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was perfect! United Airlines staff was extremely caring, super friendly and professional

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

The crew was excellent. What I did not enjoy was the food. I have taken many international flights and this was on the low end. Otherwise the trip was fine.

Boarding felt a little chaotic as everyone was waiting around the gate. Food was great, service was good.

The chicken was so dry it was impossible to eat. No substitute was offered. The port to charge my phone was broken and all I got was a shrug from the crew. The entertainment system was glitchy and subtitles didn’t load. Crew seemed fully uninterested and unfriendly.

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.

Booked business with TAP from LAX to Cabo Verde - overall ok, but just doesn’t feel like business class. More of a budget airline

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

Food was edible, not great, and served by attendants who looked like they really were not happy working the flight. The section I was in was too warm making the 11 hour flight uncomfortable. Other areas on the plane were fine.

We had seats 1 D and 1E which is right to the front as there were no other seats available. It is right up at the galley and toilet. Whole flight was very noisy and busy and we didnt get a good flight or rest the entire flight. Its was a pretty costly Business class fare that felt like Economy class experience.

They took 8 hours and eventually cancelled the flight. Compensation has been very lackluster and communication has been slow and terrible.

Airline attendant never walks along the isle to check if everyone is ok. The food is worst I’ve experienced. Chicken pasta is very salty while the fish is bland and over-cooked. Only two toilets for the entire economy section.

737-8 Max is an awful design. Toilets in the rear are inaccessible for most of the flight due to service carts.

Food was bad, and they used plastic for everything. For the amount we spent, it felt cheap and as if they were doing us a favor. They need to focus on true user delight, like other airlines such as Emirates, Cathay Pacific, and KLM do, and go above and beyond in terms of cabin facilities and passenger amenities (Earbuds, pillows, blankets were just cheap and completely useless)

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

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

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

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.

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

No paper towels in bathroom. Aisle seat difficult to get out of Other than those, excellent service

Both flights are delayed so I rate the whole experience as mediocre.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

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

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

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

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.

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.

The delay was not communicated via text and the person who helped with check in also didn’t inform me about the delay. I ended up missing my connection and it was a waste of 5 hours. The crew didn’t mention there would be someone at the gate informing of if I would be rebooked and there was no signage. Overall a very poor experience. The British Airways app was also very buggy, and didn’t work. I will avoid flying with British Airways when possible.

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

Information on your arrival and departure airports