$409 Find Cheap Flights from Portugal to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Diego departing on 9/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results for flights to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to San Diego, as well as popular online travel agencies
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Cheap Flights from Portugal to San Diego

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

Thu, Aug 28 - Thu, Sep 11
Delta Logo
5:00 am - 12:00 pmLIS-SAN
15h 00m1 stop
Delta Logo
9:59 am - 2:50 pmSAN-LIS
20h 51m2 stops
$749Delta
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Mon, Aug 25 - Sun, Sep 7
 Logo
7:30 pm - 12:00 pmLIS-SAN
24h 30m1 stop
 Logo
6:30 am - 8:00 amSAN-LIS
17h 30m1 stop
Mon, Aug 25 - Sun, Sep 7
KLM Logo
7:30 pm - 12:00 pmLIS-SAN
24h 30m1 stop
KLM Logo
5:15 pm - 6:40 pmSAN-LIS
17h 25m2 stops
$754KLM
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Mon, Sep 8 - Tue, Sep 23
Delta Logo
5:00 am - 8:41 pmLIS-SAN
23h 41m2 stops
Delta Logo
9:59 am - 2:50 pmSAN-LIS
20h 51m2 stops
$757Delta
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Mon, Aug 25 - Sun, Sep 7
Delta Logo
5:40 am - 6:01 pmLIS-SAN
20h 21m2 stops
Delta Logo
10:00 am - 2:50 pmSAN-LIS
20h 50m2 stops
$760Delta
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Fri, Sep 12 - Fri, Sep 19
Virgin Atlantic Logo
10:00 am - 8:33 pmLIS-SAN
18h 33m1 stop
Virgin Atlantic Logo
9:52 pm - 8:00 amSAN-LIS
26h 08m1 stop
$784Virgin Atlantic
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Mon, Sep 8 - Tue, Sep 23
United Airlines Logo
6:15 am - 3:25 pmLIS-SAN
17h 10m1 stop
United Airlines Logo
8:10 am - 9:20 amSAN-LIS
17h 10m1 stop
$869United Airlines
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Mon, Sep 8 - Tue, Sep 23
British Airways Logo
6:45 pm - 2:50 pmLIS-SAN
28h 05m1 stop
British Airways Logo
1:17 pm - 5:55 pmSAN-LIS
20h 38m2 stops
$870British Airways
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Tue, Aug 19 - Mon, Aug 25
British Airways Logo
11:05 am - 6:32 pmLIS-SAN
15h 27m1 stop
British Airways Logo
6:20 am - 9:05 amSAN-LIS
18h 45m1 stop
$1,008British Airways
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Sat, Aug 16 - Mon, Aug 25
United Airlines Logo
6:15 am - 3:25 pmLIS-SAN
17h 10m1 stop
United Airlines Logo
12:35 pm - 10:30 amSAN-LIS
13h 55m1 stop
$1,050United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for flights to San Diego

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

What is the cheapest month to fly to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to San Diego, 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 to San Diego is November, where tickets cost $827 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Portugal is $1,151 and $1,033 respectively. For one-way flights, the best month to travel is November with an average price of $827.


Good to know

Low seasonMarch
Cheapest flight$409
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Lisbon to San Diego

FAQs - booking San Diego flights

  • How far is San Diego Airport from central San Diego?

    Central San Diego is 3 miles away from San Diego Airport.

  • What is the name of San Diego’s airport?

    When flying to San Diego, you'll arrive at San Diego Airport (SAN). The airport is also known as Lindbergh Field, San Diego, or San Diego Intl.

  • What is the cheapest day to fly to San Diego?

    Based on KAYAK data, the cheapest day to fly to San Diego is Saturday where round-trip tickets can be as cheap as $809. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $974 on average.

  • How does KAYAK find such low prices on flights to San Diego?

    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 to San Diego.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to San Diego?

    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 to San Diego 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 to San Diego?

    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 to San Diego 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 San Diego?

    The cheapest time of day to fly to San Diego is generally in the morning, when round-trip flights cost $845 on average. The most expensive time of day to fly to San Diego is generally in the morning, which is peak travel time and where the average cost of a ticket is $845.

  • How many direct flights to San Diego are there each week?

    Each week there are around 2,333 direct flights from within Portugal to San Diego. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to San Diego

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Diego flight deals.

Reviews of the top airlines flying from Portugal to San Diego

 
See real verified KAYAK customer reviews for airlines flying to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to San Diego. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to San Diego? 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.
7.4
United AirlinesOverall score based on 8896 reviews
6.6Food
8.1Crew
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

Ok. Get a different kosher caterer. The food was odd.

10.0 ExcellentMarian, Jul 2025MUC - LAX
Read more United Airlines reviews

Ok. Get a different kosher caterer. The food was odd.

Our experience on United Airlines was extremely poor. The plane was extremely cold throughout our entire flight- which multiple people complained about- and we had to wait 2 hours to get a blanket which was too thin and barely helped warm us up. As well as this, none of the entertainment features were working so we had to sit through a roughly 10 hour flight with nothing to keep our attention, including the actual flight path screen. It was an extremely disappointing experience and I would hope that this gets fixed if we ever choose United Airlines again.

I really enjoyed flying with United airlines amazing experience , good customer service and great food

1.It will be better if sandwich is warm. 2.The food is too salty. 3.Breakfast needs some vegetables or fruits.

Boarded plane and then delayed 1.5 hours while on the plane

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

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.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

We were given vouchers we couldn’t use with a 5.5 hour delay

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Safe arrival. Improvement on Time efficiency Effective Communication will be great.

Not so good with their baggage handling as they damaged one of my check in luggage

A good flight back to Tampa and thankfully although we had a 90 minute delay because of thunder storms from Charlotte to bottom iof Florida, it was a prudent to avoid these for a comfortable flight as opposed to being tossed around with turbulence.

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

They removed our booking without telling us. Cost us thousands to book last minute

The decided to just remove our booking without telling us. It ended up costing us thousands

Everything you need to know for your flight to San Diego

Information on the airport you'll fly into in San Diego

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