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Cheap flights from San Diego to Porto from $352

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Porto departing on 8/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Diego to Porto

Cheap round-trip flights

Iberia Logo
6:00 pm - 7:40 amSAN-OPO
29h 40m2 stops
Iberia Logo
8:40 pm - 9:57 amOPO-SAN
21h 17m2 stops
$607Iberia
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Mon, Nov 10 - Wed, Nov 19
Iberia Logo
6:15 am - 11:45 amSAN-OPO
21h 30m2 stops
Iberia Logo
8:40 pm - 9:57 amOPO-SAN
21h 17m2 stops
$608Iberia
Find Deal
Sun, Nov 9 - Wed, Nov 19
Iberia Logo
6:00 pm - 7:40 amSAN-OPO
29h 40m2 stops
Iberia Logo
12:25 pm - 9:58 pmOPO-SAN
41h 33m2 stops
$617Iberia
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Mon, Nov 10 - Thu, Nov 20
Scandinavian Airlines Logo
10:00 am - 4:55 pmSAN-OPO
46h 55m2 stops
Scandinavian Airlines Logo
5:35 pm - 8:49 pmOPO-SAN
35h 14m2 stops
$644Scandinavian Airlines
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Wed, Nov 12 - Mon, Nov 17
United Airlines Logo
10:51 am - 9:30 amSAN-OPO
15h 39m2 stops
United Airlines Logo
12:35 pm - 11:01 amOPO-SAN
30h 26m2 stops
$648United Airlines
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Tue, Oct 28 - Sun, Nov 2
Lufthansa Logo
5:35 pm - 11:45 pmSAN-OPO
22h 10m1 stop
Lufthansa Logo
6:15 am - 3:45 pmOPO-SAN
17h 30m1 stop
$659Lufthansa
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Wed, Dec 3 - Sun, Dec 7
Logo
4:01 pm - 6:30 pmSAN-OPO
19h 29m2 stops
Logo
5:15 am - 3:45 pmOPO-SAN
17h 30m1 stop
$661
Find Deal
Tue, Oct 28 - Sun, Nov 2
Lufthansa Logo
5:35 pm - 11:45 pmSAN-OPO
22h 10m1 stop
Lufthansa Logo
12:40 pm - 7:52 pmOPO-SAN
39h 12m2 stops
$678Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
Logo
5:35 pm - 11:45 pmSAN-OPO
22h 10m1 stop
Logo
12:40 pm - 6:37 pmOPO-SAN
37h 57m2 stops
$697
Find Deal
Wed, Dec 24 - Tue, Jan 6
United Airlines Logo
10:45 pm - 11:40 amSAN-OPO
28h 55m2 stops
United Airlines Logo
12:30 pm - 9:47 pmOPO-SAN
41h 17m2 stops
$766United Airlines
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Wed, Dec 24 - Tue, Jan 6

Lufthansa flights from San Diego to Porto

Our best Lufthansa deals on San Diego to Porto flight tickets
Lufthansa
Dec 3
SAN5:35 pmSan Diego
22h 10m
1 stop
OPO11:45 pmPorto
Dec 7
OPO6:15 amPorto
17h 30m
1 stop
SAN3:45 pmSan Diego
$659
Find similar
Lufthansa
Dec 3
SAN5:35 pmSan Diego
22h 10m
1 stop
OPO11:45 pmPorto
Dec 7
OPO12:40 pmPorto
39h 12m
2 stops
SAN7:52 pmSan Diego
$678
Find similar
Lufthansa
Dec 24
SAN5:35 pmSan Diego
22h 10m
1 stop
OPO11:45 pmPorto
Jan 5
OPO4:15 pmPorto
36h 23m
2 stops
SAN8:38 pmSan Diego
$709
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United Airlines flights from San Diego to Porto

Our best United Airlines deals on San Diego to Porto flight tickets
United Airlines
Oct 28
SAN10:51 amSan Diego
15h 39m
2 stops
OPO9:30 amPorto
Nov 2
OPO12:35 pmPorto
30h 26m
2 stops
SAN11:01 amSan Diego
$648
Find similar
United Airlines
Dec 24
SAN10:45 pmSan Diego
28h 55m
2 stops
OPO11:40 amPorto
Jan 6
OPO12:30 pmPorto
41h 17m
2 stops
SAN9:47 pmSan Diego
$766
Find similar
United Airlines
Dec 25
SAN8:00 amSan Diego
19h 40m
2 stops
OPO11:40 amPorto
Jan 5
OPO12:30 pmPorto
63h 27m
3 stops
SAN7:57 pmSan Diego
$779
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momondo Fare Finder

 
Customize your flight search to find flights from San Diego to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from San Diego to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 11/10

6:00 pm-7:40 am

2 stops29h 40m

Porto

Wed 11/19

8:40 pm-9:57 am

2 stops21h 17m

$607

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 11/9

6:15 am-11:45 am

2 stops21h 30m

Porto

Wed 11/19

8:40 pm-9:57 am

2 stops21h 17m

$608

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 11/10

6:00 pm-7:40 am

2 stops29h 40m

Porto

Thu 11/20

12:25 pm-9:58 pm

2 stops41h 33m

$617

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 11/12

10:00 am-4:55 pm

2 stops46h 55m

Porto

Mon 11/17

5:35 pm-8:49 pm

2 stops35h 14m

$644

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/28

10:51 am-9:30 am

2 stops15h 39m

Porto

Sun 11/2

12:35 pm-11:01 am

2 stops30h 26m

$648

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

5:35 pm-11:45 pm

1 stop22h 10m

Porto

Sun 12/7

6:15 am-3:45 pm

1 stop17h 30m

$659

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 10/28

4:01 pm-6:30 pm

2 stops19h 29m

Porto

Sun 11/2

5:15 am-3:45 pm

1 stop17h 30m

$661

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

5:35 pm-11:45 pm

1 stop22h 10m

Porto

Sun 12/7

12:40 pm-7:52 pm

2 stops39h 12m

$678

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/24

5:35 pm-11:45 pm

1 stop22h 10m

Porto

Tue 1/6

12:40 pm-6:37 pm

2 stops37h 57m

$697

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/24

10:45 pm-11:40 am

2 stops28h 55m

Porto

Tue 1/6

12:30 pm-9:47 pm

2 stops41h 17m

$766

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

How to get the cheapest flight ticket from San Diego to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from San Diego, with most prices found around $648. If you aren’t able to travel during the month of February, then book flights to Porto from San Diego during January instead. Flights to Porto in January, while not as cheap as those in February, still average around $803.

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Tuesday when prices can be found for as low as $994. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,291. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the afternoon is the cheapest time of day to fly from San Diego to Porto when you can find flight prices for as low as $1,004. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,147 on average. Flights to Porto from San Diego in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on San Diego to Porto flights?

You could potentially save up to 12% on your flight if you consider stops on a San Diego to Porto flight.

When to book flights from San Diego to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from San Diego to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Diego to Porto (SAN to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Diego to Porto

Best Price Found

$352

Fastest flight time

15h 39m

Direct flights

None

Airports in Porto

1 airport
The best one-way flight to Porto from San Diego in the past 72 hours is $352. The best round-trip flight deal from San Diego to Porto found on momondo in the last 72 hours is $607.
The fastest flight from San Diego to Porto takes 15h 39m
There are no direct flights from San Diego to Porto. Popular non-direct route for this connection is San Diego Airport - Porto Airport.
There is 1 airport near Porto: Porto (OPO)
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  • How far is San Diego to Porto by plane?

    Porto is 5600.8 mi away from San Diego. By plane, this route typically takes 15h 39m.

  • When did momondo last update prices for flights from San Diego Airport to Porto Airport?

    Prices for flights from San Diego Airport to Porto Airport refresh daily.

  • How many operators does momondo search for flights from San Diego Airport to Porto Airport?

  • How old do you have to be to fly from San Diego Airport to Porto Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Diego Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from San Diego to Porto?

Best airlines flying from San Diego to Porto

Compare and see reviews for airlines that fly from San Diego to Porto with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $547Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
United AirlinesPriceFrom $615Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
KLMPriceFrom $648Free CancellationRating
7.8
1,383 reviews
Search KLM flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Vila Nova de Gaia
Coimbra
Matosinhos
Braga
Caminha
Guimarães
Chaves
Esposende
Lamego
Arcos de Valdevez
Espinho
Viseu
Ponte de Lima
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Pinhao
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from San Diego to Porto?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Diego to Porto for you.

Can I find flights from San Diego to Porto with flexible booking policies on momondo?

momondo does allow users to show only those flights to Porto from San Diego which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from San Diego to Porto?

Once you have performed a search for San Diego to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from San Diego to Porto right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Diego to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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