$393 Find Cheap Flights from San Diego 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 Diego to Portugal departing on 5/31. 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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Best Portugal Flight Deals from San Diego

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lisbon
Lisbon1 stop$558
Porto
Porto2 stops$755
Ponta Delgada
Ponta Delgada1 stop$980
Funchal
Funchal1 stop$822
Faro
Faro1 stop$818
Lisbon
Lisbon1 stop$558
Porto
Porto2 stops$755
Ponta Delgada
Ponta Delgada1 stop$980
Funchal
Funchal1 stop$822
Faro
Faro1 stop$818

Cheap Flights from San Diego to Portugal

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Diego 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.

Recent round-trip flight deals from San Diego to Portugal

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from San Diego to Portugal.
Discover the best prices for you by selecting your travel dates on KAYAK.
Iberia Logo
6:22 am - 9:05 amSAN-LIS
18h 43m1 stop
Iberia Logo
8:25 am - 11:23 pmLIS-SAN
22h 58m2 stops
$558Iberia
Find Deal
Wed, Aug 20 - Tue, Aug 26
Iberia Logo
6:22 am - 9:05 amSAN-LIS
18h 43m1 stop
Iberia Logo
11:05 am - 8:56 pmLIS-SAN
17h 51m1 stop
$560Iberia
Find Deal
Wed, Aug 20 - Tue, Aug 26
United Airlines Logo
8:10 am - 9:20 amSAN-LIS
17h 10m1 stop
United Airlines Logo
11:25 am - 3:50 pmLIS-SAN
36h 25m2 stops
$629United Airlines
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Thu, Jul 31 - Fri, Aug 22
United Airlines Logo
8:10 am - 9:20 amSAN-LIS
17h 10m1 stop
United Airlines Logo
11:25 am - 12:35 pmLIS-SAN
33h 10m2 stops
$632United Airlines
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Mon, Oct 6 - Tue, Oct 14
Air Canada Logo
10:20 pm - 9:20 amSAN-LIS
27h 00m2 stops
Air Canada Logo
9:50 am - 11:40 amLIS-SAN
33h 50m2 stops
$634Air Canada
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Sun, Aug 10 - Sat, Aug 30
Air Canada Logo
4:55 pm - 10:20 amSAN-LIS
33h 25m2 stops
Air Canada Logo
11:00 am - 7:25 pmLIS-SAN
40h 25m2 stops
$636Air Canada
Find Deal
Sat, Oct 25 - Tue, Nov 4
British Airways Logo
7:50 pm - 11:10 pmSAN-LIS
19h 20m1 stop
British Airways Logo
6:40 pm - 2:50 pmLIS-SAN
28h 10m1 stop
$677British Airways
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Wed, Sep 17 - Thu, Sep 25
British Airways Logo
7:50 pm - 11:10 pmSAN-LIS
19h 20m1 stop
British Airways Logo
6:40 pm - 2:50 pmLIS-SAN
28h 10m1 stop
$700British Airways
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Wed, Sep 17 - Thu, Sep 25
Delta Logo
7:00 am - 8:00 amSAN-LIS
17h 00m1 stop
Delta Logo
12:45 pm - 8:44 pmLIS-SAN
15h 59m1 stop
$826Delta
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Mon, Sep 15 - Fri, Sep 26
Delta Logo
8:00 am - 10:45 amSAN-LIS
18h 45m2 stops
Delta Logo
12:45 pm - 12:21 amLIS-SAN
19h 36m2 stops
$830Delta
Find Deal
Mon, Sep 15 - Thu, Sep 25
Useful Info

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego 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 Diego to Portugal is February, when tickets cost $734 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,527 and $1,376 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to Portugal on a Wednesday and more expensive on a Friday. On your return trip to San Diego, you should consider flying back on a Saturday, and avoid Sundays for better deals.

How far in advance should I book a flight from San Diego 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 Diego 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 Diego to Portugal, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.


Good to know

Low seasonJanuary
High seasonSeptember
Cheapest flight$393
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from San Diego to Lisbon

FAQs - booking Portugal flights

  • Can I fly with my pets from San Diego to Portugal?

    KLM allows pets up to 8 kg to fly inside the cabin; heavier pets can fly in the cargo. If you are flying with British Airways, your service dogs and emotional support dogs can travel with you inside the cabin free of cost.

  • What are kid-friendly flights from San Diego to Portugal?

    If you’re flying with children under the age of two, you should fly with American Airlines. They have a Kids Fly Free policy, in which kids under two years of age can fly free with a parent and be seated in their lap. The cabin includes infant seat belts, baby food, and bottle heating services.

  • What are possible layovers on my route from San Diego to Portugal?

    Most of the flights from San Diego to Portugal are one-stop flights. You will most likely have a layover at the London Heathrow (LHR) or Philadelphia (PHL) airports. Lounge access is available at these airports, depending on your airline. Both British Airways and American Airlines offer complimentary access to lounges for their business-class passengers.

  • Can I get vegan meals while flying from San Diego to Portugal?

    If you’re flying with KLM Airlines or British Airlines from San Diego to Lisbon Humberto Delgado (LIS), you can request vegan and dairy-free meals 24 hours prior to taking off or while booking your tickets. You can also opt for low-fat, low-sodium, or kid-friendly meals on your flight.

  • How does KAYAK find such low prices on flights from San Diego 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 Diego to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Diego 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 Diego 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 Diego 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 Diego 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 Diego 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 afternoon, when round-trip flights cost $888 on average. Morning departures are around 19% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,071.

Top tips for finding cheap flights to Portugal

  • If you fly from San Diego to Portugal, you might arrive at Lisbon Humberto Delgado (LIS). This airport is the hub for TAP Air Portugal. Airlines frequently fly to Faro International Airport (FAO), Francisco Sá Carneiro Airport (OPO), and Santa Maria Airport (SMA). You can also book nonstop flights from Lisbon Airport to Madrid, Barcelona, and other Spanish destinations.
  • Those flying from San Diego to Lisbon Humberto Delgado (LIS) might want to book British Airways, which offers a one-stop flight. Your layover on this flight will be at Philadelphia Airport (PHL). During your layover, you can relax at the British Airways Galleries Club Lounge in Terminal A.
  • The cheapest flight from San Diego is with Delta Air Lines. It will take 13 hours to fly into Lisbon Airport (LIS) and has a layover at Minneapolis, St. Paul Airport (MSP). You can upgrade your ticket to premium economy for priority boarding and assisted airport transfers. You will also get extra legroom and a variety of snacks with a premium economy ticket.
  • KLM Airlines is the most sustainable airline on this route. It is dedicated to reducing the carbon footprint. They use low-emission fuel, lighter serving utensils, and seats made of more lightweight material to minimize the weight on board and help reduce fuel consumption.
  • You can also fly comfortably from San Diego to Lisbon Humberto Delgado (LIS) with Air France. This airline provides passengers with a pillow, blanket, and a USB charging port on every seat. You will also get free snacks and drinks on this flight.

Top 5 airlines serving from San Diego to Portugal

Need help choosing which airline to fly with from San Diego 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 7934 reviews
7.3Food
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

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

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

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

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

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

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

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Smooth flight. As always dinner could have been more generous. Breakfast was great.

AWFUL. I have had the experience of traveling with many airlines across the world, and hands down United Airlines is the worst. Not one flight was on time, and I don’t think I met one crew member or staff member who wasn’t rude.

Old and out of date plane, it seem like every time I fly with united there’s and issue. We were delayed,

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

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

I booked my flight ni November and was placed on standby? How does this happen. Flight was 1 1/2 hours late departure plane was switched to a smaller plane easy to tell this is a government run company they don’t care about anyone

Plane was old, cabin was small, overhead bins were small, seats really uncomfortable, no seat-back entertainment

Excellent crew, great food despite catering issues. We need more people like this.

1. The PA system was painfully loud. 2. Overhead bin #33 was missing—I find this troubling.

I had a disappointing experience at the San Diego airport with one of your gate agents. Despite being in Zone 4 and traveling with a standard carry-on bag that has never been an issue (30 flights in Q4 alone), the tall, blonde gentleman forced me to gate-check my bag. When I politely asked if we could verify the bag’s size, he became confrontational, even threatening to deny me boarding twice. His behavior appeared erratic and unprofessional, projecting a negative attitude onto passengers, as if he was going through something mentally. Notably, there was ample overhead space once all passengers had boarded. In contrast, the tall, older Asian agent handled the situation with professionalism and calmness, making a clear effort to de-escalate. As an avid traveler, this unnecessary inconvenience set a frustrating tone for my trip to Asia.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

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

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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