$276 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 5/6. 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 Diego to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$434
Porto
Porto2 stops$484
Faro
Faro2 stops$486
Ponta Delgada
Ponta Delgada1 stop$938
Funchal
Funchal1 stop$988
Lisbon
Lisbon2 stops$434
Porto
Porto2 stops$484
Faro
Faro2 stops$486
Ponta Delgada
Ponta Delgada1 stop$938
Funchal
Funchal1 stop$988

Book Cheap San Diego 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 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Diego to Portugal

dj., març 12 - dj., març 19
Lufthansa Logo
11:57 am - 11:30 pm
SAN
-
LIS
28h 33m
2 stops
Lufthansa Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$434Lufthansa
dt., març 10 - dj., març 19
Lufthansa Logo
6:35 pm - 11:30 pm
SAN
-
LIS
21h 55m
1 stop
Lufthansa Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$449Lufthansa
dt., abr. 7 - dt., abr. 21
Delta Logo
6:20 am - 10:05 pm
SAN
-
OPO
31h 45m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SAN
14h 50m
1 stop
$484Delta
dt., març 10 - dt., març 24
Delta Logo
7:00 am - 10:30 am
SAN
-
OPO
20h 30m
2 stops
Delta Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$485Delta
dj., febr. 26 - dl., març 2
KLM Logo
10:59 am - 7:20 pm
SAN
-
FAO
24h 21m
2 stops
KLM Logo
7:15 pm - 12:05 pm
FAO
-
SAN
24h 50m
1 stop
$486KLM
dt., març 10 - dt., març 17
KLM Logo
3:00 pm - 3:25 pm
SAN
-
OPO
17h 25m
1 stop
KLM Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$486KLM
dt., març 3 - dj., març 12
United Airlines Logo
8:30 am - 10:15 am
SAN
-
LIS
17h 45m
1 stop
United Airlines Logo
6:10 am - 4:45 pm
LIS
-
SAN
17h 35m
1 stop
$488United Airlines
ds., març 7 - dt., març 24
United Airlines Logo
7:50 pm - 9:30 am
SAN
-
OPO
29h 40m
3 stops
United Airlines Logo
12:30 pm - 10:40 am
OPO
-
SAN
29h 10m
2 stops
$492United Airlines
dl., febr. 23 - dl., març 2
British Airways Logo
1:09 pm - 9:55 pm
SAN
-
LIS
24h 46m
2 stops
British Airways Logo
11:05 am - 9:59 pm
LIS
-
SAN
18h 54m
1 stop
$495British Airways
dj., febr. 26 - dl., març 2
British Airways Logo
1:32 pm - 4:45 pm
SAN
-
FAO
19h 13m
2 stops
British Airways Logo
7:05 pm - 4:10 pm
FAO
-
SAN
29h 05m
1 stop
$799British Airways
Booking Insights

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 $625 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,209 and $971 respectively.

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 2 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$276
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from San Diego to Faro

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.

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.

Reviews of the 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.
7.9
DeltaOverall score based on 8127 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
Airline reviews

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

10.0 ExcellentEric, Jan 2026
SFO - ATL
Read more Delta reviews

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

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

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

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.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

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

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

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

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

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

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

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

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..

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Late flight Delays Poor service Poor staff Worst airline ever

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

The food could be better, more snacks. And have some plugs to chargue the phone.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

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

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

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

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

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

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.

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

Information on your arrival and departure airports