SAN - OPO

$366 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 8/16. 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
$769
Typical prices: $1,198-$812
Air Canada, Lufthansa
Tue 8/18Tue 1/12
SAN - OPO • 2 stops
Cheapest one-way
$366
Typical prices: $358-$482
British Airways
Sun 8/16
SAN - OPO • 1 stop
Top airlines
Cheapest • from $777 (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 • 30% 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

Tue, Aug 18 - Tue, Jan 12
Multiple Airlines Logo
12:35 pm - 7:00 am
SAN
-
OPO
34h 25m
2 stops
Multiple Airlines Logo
1:45 pm - 3:45 pm
OPO
-
SAN
34h 00m
1 stop
$769Multiple Airlines
Mon, Aug 17 - Thu, Sep 3
Air Canada Logo
10:40 pm - 7:00 am
SAN
-
OPO
24h 20m
2 stops
Air Canada Logo
11:50 am - 6:30 pm
OPO
-
SAN
38h 40m
2 stops
$777Air Canada
Mon, Aug 17 - Tue, Sep 1
Air Canada Logo
6:30 am - 7:00 am
SAN
-
OPO
16h 30m
2 stops
Air Canada Logo
12:15 pm - 2:50 pm
OPO
-
SAN
34h 35m
2 stops
$778Air Canada
Tue, Aug 18 - Tue, Sep 1
United Airlines Logo
6:35 am - 6:55 am
SAN
-
OPO
16h 20m
1 stop
United Airlines Logo
12:15 pm - 8:39 pm
OPO
-
SAN
16h 24m
1 stop
$787United Airlines
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
6:35 am - 6:55 am
SAN
-
OPO
16h 20m
1 stop
United Airlines Logo
12:15 pm - 8:39 pm
OPO
-
SAN
16h 24m
1 stop
$788United Airlines
Tue, Aug 18 - Tue, Jan 12
Multiple Airlines Logo
8:20 am - 7:00 am
SAN
-
OPO
38h 40m
2 stops
Multiple Airlines Logo
4:05 pm - 7:49 pm
OPO
-
SAN
35h 44m
2 stops
$789Multiple Airlines
Tue, Aug 18 - Tue, Jan 12
KLM Logo
7:00 am - 10:30 am
SAN
-
OPO
19h 30m
1 stop
KLM Logo
5:00 am - 12:05 pm
OPO
-
SAN
15h 05m
1 stop
$790KLM
Mon, Aug 17 - Tue, Sep 1
United Airlines Logo
10:40 pm - 7:00 am
SAN
-
OPO
24h 20m
2 stops
United Airlines Logo
12:15 pm - 8:39 pm
OPO
-
SAN
16h 24m
1 stop
$791United Airlines
Wed, Aug 19 - Tue, Sep 1
United Airlines Logo
6:20 am - 6:55 am
SAN
-
OPO
16h 35m
2 stops
United Airlines Logo
12:15 pm - 8:39 pm
OPO
-
SAN
16h 24m
1 stop
$792United Airlines
Tue, Aug 18 - Tue, Jan 12
United Airlines Logo
7:41 pm - 7:00 am
SAN
-
OPO
27h 19m
3 stops
United Airlines Logo
12:30 pm - 7:49 pm
OPO
-
SAN
39h 19m
2 stops
$793United 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 August.

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 August and June, where the average cost of round-trip tickets is $1,216 and $1,208 respectively.

Good to know

Low seasonNovember
Cheapest flight$366
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 15% lower on average.
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 $366 for a one-way ticket and $769 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 $842 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 $903 and an overall rating of 7.7.

  • 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 8373 reviews
8.1Boarding
8.5Crew
7.9Comfort
7.2Food
7.8Entertainment
Airline reviews

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

10.0 ExcellentLorna, Mar 2026
LAX - PDX
Read more Delta reviews

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.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

It was really nice experience by flying this klm flight.I personally recommend everyone to please try this klm flight

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.

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

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.

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

The business class seat is exceptional. I wish the food is more palatable.

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Business class seats felt very cramped compared to other airlines.

OK, we were delayed and had to de plane and reboard.

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

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

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.

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

Information on your arrival and departure airports