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Cheap flights from San Diego to Porto from $477

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from San Diego to Porto departing on 12/3. 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

Enter your travel dates to find the best prices.
Lufthansa Logo
5:35 pm - 11:40 pmSAN-OPO
22h 05m1 stop
Lufthansa Logo
6:15 am - 3:45 pmOPO-SAN
17h 30m1 stop
$477Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
KLM Logo
10:10 am - 10:30 amSAN-OPO
16h 20m2 stops
KLM Logo
4:10 pm - 12:05 pmOPO-SAN
27h 55m1 stop
$482KLM
Find Deal
Sun, Feb 15 - Mon, Feb 23
Delta Logo
7:10 am - 10:30 amSAN-OPO
19h 20m2 stops
Delta Logo
5:00 am - 10:54 pmOPO-SAN
25h 54m2 stops
$492Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Lufthansa Logo
7:00 am - 11:40 amSAN-OPO
20h 40m2 stops
Lufthansa Logo
2:05 pm - 3:45 pmOPO-SAN
33h 40m1 stop
$497Lufthansa
Find Deal
Sun, Feb 1 - Thu, Feb 12
Lufthansa Logo
5:35 pm - 11:40 pmSAN-OPO
22h 05m1 stop
Lufthansa Logo
12:30 pm - 7:52 pmOPO-SAN
39h 22m2 stops
$505Lufthansa
Find Deal
Wed, Dec 3 - Sun, Dec 7
United Airlines Logo
8:30 am - 11:40 amSAN-OPO
19h 10m2 stops
United Airlines Logo
6:00 am - 8:49 pmOPO-SAN
46h 49m3 stops
$514United Airlines
Find Deal
Sun, Feb 15 - Mon, Feb 23
United Airlines Logo
8:30 am - 11:40 amSAN-OPO
19h 10m2 stops
United Airlines Logo
12:30 pm - 10:44 pmOPO-SAN
42h 14m2 stops
$523United Airlines
Find Deal
Sun, Feb 15 - Sat, Feb 21
United Airlines Logo
12:08 pm - 11:40 amSAN-OPO
39h 32m3 stops
United Airlines Logo
12:30 pm - 11:42 pmOPO-SAN
43h 12m2 stops
$533United Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
7:10 am - 10:30 amSAN-OPO
19h 20m2 stops
Delta Logo
5:00 am - 10:54 pmOPO-SAN
25h 54m2 stops
$541Delta
Find Deal
Wed, Dec 3 - Sun, Dec 7
Iberia Logo
7:21 am - 8:00 pmSAN-OPO
28h 39m2 stops
Iberia Logo
4:40 pm - 8:28 amOPO-SAN
23h 48m2 stops
$4,210Iberia
Find Deal
Sat, Nov 29 - Wed, Dec 10

Delta flights from San Diego to Porto

Our best Delta deals on San Diego to Porto flight tickets
Delta
Dec 3
SAN7:10 amSan Diego
19h 20m
2 stops
OPO10:30 amPorto
Dec 7
OPO5:00 amPorto
25h 54m
2 stops
SAN10:54 pmSan Diego
$492
Find similar
Delta
Dec 3
SAN7:10 amSan Diego
19h 20m
2 stops
OPO10:30 amPorto
Dec 7
OPO5:00 amPorto
25h 54m
2 stops
SAN10:54 pmSan Diego
$541
Find similar

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 05m
1 stop
OPO11:40 pmPorto
Dec 7
OPO6:15 amPorto
17h 30m
1 stop
SAN3:45 pmSan Diego
$477
Find similar
Lufthansa
Feb 1
SAN7:00 amSan Diego
20h 40m
2 stops
OPO11:40 amPorto
Feb 12
OPO2:05 pmPorto
33h 40m
1 stop
SAN3:45 pmSan Diego
$497
Find similar
Lufthansa
Dec 3
SAN5:35 pmSan Diego
22h 05m
1 stop
OPO11:40 pmPorto
Dec 7
OPO12:30 pmPorto
39h 22m
2 stops
SAN7:52 pmSan Diego
$505
Find similar

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 October 30, 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

Wed 12/3

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Sun 12/7

6:15 am-3:45 pm

1 stop17h 30m

$477

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 2/15

10:10 am-10:30 am

2 stops16h 20m

Porto

Mon 2/23

4:10 pm-12:05 pm

1 stop27h 55m

$482

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

7:10 am-10:30 am

2 stops19h 20m

Porto

Sun 12/7

5:00 am-10:54 pm

2 stops25h 54m

$492

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 2/1

7:00 am-11:40 am

2 stops20h 40m

Porto

Thu 2/12

2:05 pm-3:45 pm

1 stop33h 40m

$497

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Sun 12/7

12:30 pm-7:52 pm

2 stops39h 22m

$505

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 2/15

8:30 am-11:40 am

2 stops19h 10m

Porto

Mon 2/23

6:00 am-8:49 pm

3 stops46h 49m

$514

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 2/15

8:30 am-11:40 am

2 stops19h 10m

Porto

Sat 2/21

12:30 pm-10:44 pm

2 stops42h 14m

$523

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

12:08 pm-11:40 am

3 stops39h 32m

Porto

Sun 12/7

12:30 pm-11:42 pm

2 stops43h 12m

$533

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

7:10 am-10:30 am

2 stops19h 20m

Porto

Sun 12/7

5:00 am-10:54 pm

2 stops25h 54m

$541

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 11/29

7:21 am-8:00 pm

2 stops28h 39m

Porto

Wed 12/10

4:40 pm-8:28 am

2 stops23h 48m

$4,210

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 October instead. Flights to Porto in October, while not as cheap as those in February, still average around $784.

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.

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

Direct flights

None
There are no direct flights from San Diego to Porto. There are no popular flight routes from San Diego to Porto.
Search flight deals

  • How far is San Diego to Porto by plane?

    Porto is 5600.8 mi away from San Diego. By plane, this route typically takes 16h 20m.

  • 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
United AirlinesPriceFrom $615Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
LufthansaPriceFrom $650Free CancellationRating
6.8
7,541 reviews
Search Lufthansa flights

Traveling to a place near Porto?

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