SAN - OPO

$460 Find Cheap Flights from San Diego to Porto

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 Porto departing on 9/12. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Diego to Porto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$743
Typical prices: $957-$740
Delta
Sun 10/25Thu 11/5
SAN - OPO • 1 stop
Cheapest one-way
$460
Typical prices: $590-$748
Air Canada
Sat 9/12
SAN - OPO • 2 stops
Top airlines
Cheapest • from $743 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Diego and Porto. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $758 (round-trip)
Shortest trip • 16h 00m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Porto (SAN-OPO)

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

Sun, Oct 25 - Thu, Nov 5
Delta Logo
7:00 am - 8:05 am
SAN
-
OPO
18h 05m
1 stop
Delta Logo
5:00 am - 12:10 pm
OPO
-
SAN
15h 10m
1 stop
$743Delta
Tue, Oct 27 - Wed, Nov 4
KLM Logo
3:05 pm - 3:25 pm
SAN
-
OPO
17h 20m
1 stop
KLM Logo
11:15 am - 12:10 pm
OPO
-
SAN
32h 55m
1 stop
$748KLM
Tue, Nov 10 - Fri, Nov 20
United Airlines Logo
7:00 am - 9:30 am
SAN
-
OPO
18h 30m
2 stops
United Airlines Logo
6:00 am - 8:45 pm
OPO
-
SAN
22h 45m
2 stops
$752United Airlines
Sun, Oct 25 - Fri, Nov 6
Delta Logo
7:00 am - 8:05 am
SAN
-
OPO
18h 05m
1 stop
Delta Logo
5:00 am - 6:46 pm
OPO
-
SAN
21h 46m
2 stops
$753Delta
Sat, Oct 24 - Thu, Nov 5
Delta Logo
1:05 pm - 9:05 am
SAN
-
OPO
36h 00m
1 stop
Delta Logo
5:00 am - 12:10 pm
OPO
-
SAN
15h 10m
1 stop
$755Delta
Sat, Oct 24 - Thu, Nov 5
United Airlines Logo
10:40 pm - 9:30 am
SAN
-
OPO
27h 50m
2 stops
United Airlines Logo
12:30 pm - 10:11 am
OPO
-
SAN
29h 41m
2 stops
$756United Airlines
Sun, Nov 8 - Fri, Nov 20
Delta Logo
10:00 am - 10:00 pm
SAN
-
OPO
28h 00m
2 stops
Delta Logo
5:00 am - 6:46 pm
OPO
-
SAN
21h 46m
2 stops
$757Delta
Sat, Nov 7 - Wed, Nov 18
Delta Logo
10:30 pm - 9:05 am
SAN
-
OPO
26h 35m
2 stops
Delta Logo
5:00 am - 4:06 pm
OPO
-
SAN
19h 06m
2 stops
$758Delta
Sat, Oct 24 - Fri, Nov 6
Delta Logo
1:05 pm - 9:05 am
SAN
-
OPO
36h 00m
1 stop
Delta Logo
5:00 am - 11:47 pm
OPO
-
SAN
26h 47m
2 stops
$759Delta
Mon, Nov 9 - Wed, Nov 18
United Airlines Logo
7:10 am - 9:30 am
SAN
-
OPO
18h 20m
1 stop
United Airlines Logo
12:35 pm - 10:38 pm
OPO
-
SAN
18h 03m
1 stop
$761United Airlines
Booking Insights

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

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

How much is a round-trip flight from San Diego to Porto?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Diego to Porto departing in October.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego to Porto, 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 Porto is February, where tickets cost $648 (return) on average. On the other hand, the most expensive months are May and June, where the average cost of round-trip tickets is $1,251 and $1,221 respectively.

Good to know

Low seasonDecember
Cheapest flight$460
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from San Diego to Porto

When to book flights from San Diego to Porto

Are your dates flexible? Find out the best times to travel from San Diego to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Diego to Porto

  • What is the cheapest flight from San Diego to Porto?

    In the last 3 days, the lowest price for a flight from San Diego to Porto was $460 for a one-way ticket and $743 for a round-trip.

  • Do I need a passport to fly between San Diego and Porto?

    Yes, you'll most likely have to show a valid passport before boarding the plane in San Diego and on arrival in Porto.

  • Which airports will I be using when flying from San Diego to Porto?

    San Diego and Porto are both served by 1 main airport. You will leave San Diego from San Diego and will be arriving at Porto.

  • Which aircraft models fly most regularly from San Diego to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Diego to Porto?

    SkyTeam, and Star Alliance are the airline alliances operating flights between San Diego and Porto, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from San Diego to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from San Diego to Porto are Delta and KLM. With an average price for the route of $1,134 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,047 and an overall rating of 7.8.

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

    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 Porto.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from 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 from San Diego to Porto?

    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 Porto with an airline and back to San Diego with another airline. Booking your flights between San Diego and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Diego to Porto?

    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 Porto from San Diego up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from San Diego to Porto

 
See real verified KAYAK customer reviews for airlines flying from San Diego to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Diego to Porto? 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 8452 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.8Entertainment
7.2Food
Airline reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

10.0 ExcellentTeresa, Apr 2026
SMF - LAX
Read more Delta reviews

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Outstanding even though the 330 was one of the oldest in the fleet. The difference was the attentiveness and responsiveness of a really experienced flight attendant. For airline food great variety of interesting choices and good tastes supported by a good wine selection.

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

It was really nice journey i personally recommend klm flight

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

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.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

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.

No screens or meal options. Freezing cold. Dirty seats. Left late.

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

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

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

Information on your arrival and departure airports