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Cheap flights from San Diego to Porto from $350

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 6/20. 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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0 bags

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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.
Delta Logo
6:20 am - 10:00 pm
SAN
-
OPO
31h 40m
2 stops
Delta Logo
5:00 am - 6:03 pm
OPO
-
SAN
21h 03m
2 stops
$481Delta
Mon, Apr 27 - Fri, May 8
KLM Logo
3:00 pm - 3:25 pm
SAN
-
OPO
17h 25m
1 stop
KLM Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$486KLM
Tue, Mar 10 - Tue, Mar 24
Delta Logo
6:20 am - 10:00 pm
SAN
-
OPO
31h 40m
2 stops
Delta Logo
4:20 pm - 11:51 am
OPO
-
SAN
27h 31m
2 stops
$488Delta
Mon, Apr 27 - Thu, May 7
KLM Logo
1:02 pm - 3:25 pm
SAN
-
OPO
19h 23m
2 stops
KLM Logo
5:00 am - 1:05 pm
OPO
-
SAN
15h 05m
1 stop
$491KLM
Tue, Mar 10 - Tue, Mar 24
Delta Logo
1:40 pm - 10:15 pm
SAN
-
OPO
24h 35m
1 stop
Delta Logo
4:20 pm - 11:51 am
OPO
-
SAN
27h 31m
2 stops
$493Delta
Tue, Apr 28 - Thu, May 7
Delta Logo
6:20 am - 10:05 pm
SAN
-
OPO
31h 45m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SAN
14h 50m
1 stop
$516Delta
Tue, May 5 - Tue, May 19
Delta Logo
6:20 am - 10:05 pm
SAN
-
OPO
31h 45m
2 stops
Delta Logo
5:00 am - 6:03 pm
OPO
-
SAN
21h 03m
2 stops
$522Delta
Tue, May 5 - Tue, May 19
Delta Logo
6:20 am - 10:00 pm
SAN
-
OPO
31h 40m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SAN
14h 50m
1 stop
$525Delta
Mon, Apr 27 - Sat, May 9
Multiple Airlines Logo
4:00 pm - 6:30 pm
SAN
-
OPO
19h 30m
2 stops
Multiple Airlines Logo
6:30 am - 12:14 am
OPO
-
SAN
24h 44m
2 stops
$526Multiple Airlines
Tue, Mar 10 - Fri, Mar 20
Delta Logo
10:05 am - 10:00 pm
SAN
-
OPO
27h 55m
2 stops
Delta Logo
5:00 am - 11:50 am
OPO
-
SAN
14h 50m
1 stop
$529Delta
Mon, Apr 27 - Thu, May 7

Lufthansa flights from San Diego to Porto

Our best Lufthansa deals on San Diego to Porto flight tickets
Lufthansa
Mar 18
SAN6:35 pmSan Diego
22h 05m
1 stop
OPO11:40 pmPorto
Mar 25
OPO1:45 pmPorto
34h 00m
1 stop
SAN4:45 pmSan Diego
$545
Lufthansa
Mar 10
SAN11:03 amSan Diego
20h 42m
2 stops
OPO2:45 pmPorto
Mar 24
OPO4:15 pmPorto
31h 30m
2 stops
SAN4:45 pmSan Diego
$569
Lufthansa
Apr 26
SAN5:15 pmSan Diego
22h 10m
1 stop
OPO11:25 pmPorto
May 10
OPO6:20 amPorto
17h 05m
1 stop
SAN3:25 pmSan Diego
$611

United Airlines flights from San Diego to Porto

Our best United Airlines deals on San Diego to Porto flight tickets
United Airlines
Apr 26
SAN9:45 pmSan Diego
28h 00m
2 stops
OPO9:45 amPorto
May 12
OPO12:35 pmPorto
28h 40m
2 stops
SAN9:15 amSan Diego
$553
United Airlines
Apr 26
SAN9:45 pmSan Diego
28h 00m
2 stops
OPO9:45 amPorto
May 11
OPO12:35 pmPorto
29h 34m
2 stops
SAN10:09 amSan Diego
$612
United Airlines
Apr 22
SAN10:30 pmSan Diego
33h 10m
2 stops
OPO3:40 pmPorto
Apr 26
OPO6:00 amPorto
37h 25m
2 stops
SAN11:25 amSan Diego
$615

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 February 3, 2026.
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 4/27

6:20 am-10:00 pm

2 stops31h 40m

Porto

Fri 5/8

5:00 am-6:03 pm

2 stops21h 03m

$481

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-3:25 pm

1 stop17h 25m

Porto

Tue 3/24

5:00 am-1:05 pm

1 stop15h 05m

$486

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 4/27

6:20 am-10:00 pm

2 stops31h 40m

Porto

Thu 5/7

4:20 pm-11:51 am

2 stops27h 31m

$488

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

1:02 pm-3:25 pm

2 stops19h 23m

Porto

Tue 3/24

5:00 am-1:05 pm

1 stop15h 05m

$491

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 4/28

1:40 pm-10:15 pm

1 stop24h 35m

Porto

Thu 5/7

4:20 pm-11:51 am

2 stops27h 31m

$493

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 5/5

6:20 am-10:05 pm

2 stops31h 45m

Porto

Tue 5/19

5:00 am-11:50 am

1 stop14h 50m

$516

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 5/5

6:20 am-10:05 pm

2 stops31h 45m

Porto

Tue 5/19

5:00 am-6:03 pm

2 stops21h 03m

$522

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 4/27

6:20 am-10:00 pm

2 stops31h 40m

Porto

Sat 5/9

5:00 am-11:50 am

1 stop14h 50m

$525

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

4:00 pm-6:30 pm

2 stops19h 30m

Porto

Fri 3/20

6:30 am-12:14 am

2 stops24h 44m

$526

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 4/27

10:05 am-10:00 pm

2 stops27h 55m

Porto

Thu 5/7

5:00 am-11:50 am

1 stop14h 50m

$529

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 December instead. Flights to Porto in December, while not as cheap as those in February, still average around $708.

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

You could potentially save up to 3% 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

Fastest flight time

16h 15m

Direct flights

None
The fastest flight from San Diego to Porto takes 16h 15m
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 15m.

  • 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 $611Free CancellationRating
6.8
7,759 reviews
Search Lufthansa flights
United AirlinesPriceFrom $615Free CancellationRating
7.4
9,236 reviews
Search United Airlines 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
Braga
Aveiro
Matosinhos
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Viseu
Ponte de Lima
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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