$215 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 8/19. 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

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Best Portugal Flight Deals from San Francisco

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$532
Porto
Porto2 stops$565
Ponta Delgada
Ponta Delgada2 stops$686
Faro
Faro2 stops$518
Funchal
Funchal1 stop$676
Lajes
Lajesnonstop$676
Pico Island
Pico Island2 stops$1,075
Horta
Horta2 stops$1,111
Velas
Velas2 stops$936
Porto Santo
Porto Santo2 stops$1,616
Lisbon
Lisbon2 stops$532
Porto
Porto2 stops$565
Ponta Delgada
Ponta Delgada2 stops$686
Faro
Faro2 stops$518
Funchal
Funchal1 stop$676
Lajes
Lajesnonstop$676
Pico Island
Pico Island2 stops$1,075
Horta
Horta2 stops$1,111
Velas
Velas2 stops$936
Porto Santo
Porto Santo2 stops$1,616

Cheap Flights from San Francisco to Portugal

 
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

Mon, Dec 1 - Wed, Dec 10
Scandinavian Airlines Logo
4:40 pm - 9:45 amSFO-FAO
33h 05m2 stops
Scandinavian Airlines Logo
10:35 am - 2:35 pmFAO-SFO
36h 00m2 stops
$518Scandinavian Airlines
Find Deal
Mon, Oct 13 - Thu, Oct 23
 Logo
8:30 am - 4:45 pmSFO-LIS
24h 15m2 stops
 Logo
7:50 am - 8:53 pmLIS-SFO
21h 03m2 stops
Wed, Oct 29 - Thu, Nov 13
United Airlines Logo
8:25 am - 10:15 amSFO-LIS
18h 50m1 stop
United Airlines Logo
5:00 am - 3:55 pmLIS-SFO
18h 55m1 stop
$562United Airlines
Find Deal
Mon, Oct 20 - Thu, Nov 6
Air Canada Logo
7:10 am - 9:20 amSFO-LIS
18h 10m2 stops
Air Canada Logo
10:55 am - 10:39 amLIS-SFO
31h 44m2 stops
$564Air Canada
Find Deal
Sat, Oct 18 - Tue, Nov 4
United Airlines Logo
11:45 pm - 9:20 amSFO-LIS
25h 35m1 stop
United Airlines Logo
5:00 am - 7:37 pmLIS-SFO
22h 37m2 stops
$568United Airlines
Find Deal
Tue, Oct 14 - Tue, Nov 4
Air Canada Logo
8:30 am - 11:05 amSFO-LIS
18h 35m2 stops
Air Canada Logo
11:20 am - 3:35 pmLIS-SFO
36h 15m2 stops
$571Air Canada
Find Deal
Mon, Oct 6 - Tue, Oct 21
TAP AIR PORTUGAL Logo
4:20 pm - 10:55 pmSFO-OPO
22h 35m1 stop
TAP AIR PORTUGAL Logo
9:15 pm - 2:35 pmOPO-SFO
25h 20m1 stop
$576TAP AIR PORTUGAL
Find Deal
Thu, Sep 25 - Tue, Oct 14
TAP AIR PORTUGAL Logo
4:20 pm - 6:55 pmSFO-OPO
18h 35m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 2:35 pmOPO-SFO
24h 05m1 stop
$580TAP AIR PORTUGAL
Find Deal
Mon, Oct 20 - Mon, Nov 3
British Airways Logo
7:20 pm - 11:10 pmSFO-LIS
19h 50m1 stop
British Airways Logo
12:55 pm - 3:00 pmLIS-SFO
34h 05m1 stop
$598British Airways
Find Deal
Mon, Oct 20 - Fri, Oct 31
British Airways Logo
4:30 pm - 5:50 pmSFO-FNC
17h 20m1 stop
British Airways Logo
5:10 pm - 4:00 pmFNC-SFO
29h 50m1 stop
$676British Airways
Find Deal
Useful Info

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?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from San Francisco to Portugal.

The cheapest ticket to Portugal from San Francisco found in the last 72 hours was to Lisbon, at $447 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 $447.

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 $1,681 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 $669 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,154 and $1,111 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 Sunday, 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$215
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 24% increase in price.
Flight from San Francisco to Lisbon

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 at night, when round-trip flights cost $800 on average. Morning departures are around 15% 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.
8.0
DeltaOverall score based on 7970 reviews
7.9Comfort
8.5Crew
7.9Entertainment
7.3Food
8.2Boarding
Airline reviews

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

10.0 ExcellentMary, Jun 2025SAN - ATL
Read more Delta reviews

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.

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

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

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.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Before final boarding, my husband and I — both seniors — were told that we could not bring our carry-on bags with us due to being in Zone 6. The staff took our bags with little explanation, stating it was policy. While we understand boarding procedures may vary by zone, the way we were spoken to was unnecessarily rude and dismissive. We felt disrespected and singled out, and the interaction left us deeply uncomfortable. As seniors, we expect to be treated with courtesy and dignity, especially during travel when accommodations and communication matter most. We hope you will look into this matter and ensure better training for staff in handling such situations with more empathy and professionalism.

Easy boarding and comfortable seating were plusses. Enjoyed the experience and good service from the captain and crew. Many thanks...!

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

No Charging ports for personal electronics, which were required to use wifi entertainment.

They are a great airline, and i enjoying flying with them. However my experience with booking through Kayak was a horrible experience. With all the restrictions and glitches of website. My entire bookings by kayak was wrong. And there was no possible way of fixing anything with them, because they hand over responsibility to the airline after purchase is made. Will not be booking through Kayak again and will inform my family and friends not to as well.

I liked nothing about this flight nor the incredible lack of service and communication on this flight from the Captain to every staff member. Arrogant, entitled and lacking any kind of basic customer service

boarding is so disorganized, i was literally appalled at the boarding experience

Comfortable but not Polaris or Delta comfort Business Class. Overall 7 out of 10

Tap air Portugal was the best I will traveling again with u guys. Thank u.

The long wait at JFK made the trip horrible. Also not having enough buses when we deplaned was annoying

Terrible! I had to cancel our flights due to my wife Carmen requiring an unexpected second cancer surgery. I first contacted orbitz about obtaining a credit due to medical interruption and orbitz directed me to TAP. I contacted TAP and the representative directed me back to orbitz and refused to even explain what TAP’s medical interruption policy was or how it worked—I wanted that information for a second call to orbitz. Terrible service at a particularly difficult time.

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.

I’ve never had worse food in business class ever!

Checked bG chstgr was extremely high. Over $120. It was s bsit and switch knowing an international passenger would have t9 check a bag.

First, communication was terrible. The gate on our ticket was not what was reflected on the airport screens and TAP personnel were not present at either gate to answer questions. The flight was delayed and there was no announcement. Also, there was an equipment swap to a smaller airframe which affected our level of comfort. The root of all these issues was as a lack of communication. With air travel in foreign countries already being a stressful affair, lack of communication needlessly raises the level of difficulty.

Checkin was very slow, we had checked in online and hoping we could do a bag drop at the airport. However everyone with checked bags had to queue up and it took over 40mins. Our advice arrive extra early or you will be rushing to the gate.

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

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 entertainment selection was ok, but overall not bad! The crew was great.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

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.

This was the second time on BA, food terrible, bathrooms gross, boarding late and disorganized. No gate issued until last minute st Heathrow, bad system, caused undue stress.

Business class was nothing more than Economy with middle seat empty. Uncomfortable seat and leg room. A mom behind me had a 18 month/2 yr old on her lap, who had his feet on my back all the time- while middle seat remained empty. Pretty much not worth the fare. Very disappointed.

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.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

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