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$354+ Cheap flights from Portugal to San Diego (SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SAN
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap flight deals from Portugal to San Diego

Cheapest flights from Portugal to San Diego
Explore the most affordable flight options available from Portugal to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 24, 2026.

This Ticket deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:55 am
LIS
-
SAN
1 stop31h 55m
Multiple Airlines
Sun 5/37:15 am
SAN
-
LIS
1 stop16h 45m
Multiple Airlines
Deal found 3/23$886
This Delta deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:00 am
LIS
-
SAN
2 stops21h 07m
Delta
Sat 5/301:37 pm
SAN
-
LIS
2 stops20h 13m
Delta
Deal found 3/20$911
This Delta deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:00 am
LIS
-
SAN
2 stops20h 34m
Delta
Mon 4/2711:40 am
SAN
-
LIS
2 stops22h 10m
Delta
Deal found 3/21$915
This Delta deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:00 am
LIS
-
SAN
2 stops21h 19m
Delta
Tue 5/191:37 pm
SAN
-
LIS
2 stops21h 08m
Delta
Deal found 3/20$916
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:00 am
LIS
-
SAN
2 stops23h 42m
Delta
Tue 5/191:37 pm
SAN
-
LIS
2 stops21h 08m
Delta
Deal found 3/19$917
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:00 am
LIS
-
SAN
2 stops23h 47m
Delta
Sun 5/37:15 am
SAN
-
LIS
1 stop16h 45m
Delta
Deal found 3/22$920
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:00 am
LIS
-
SAN
2 stops23h 45m
Delta
Thu 4/162:45 pm
SAN
-
LIS
2 stops20h 00m
Delta
Deal found 3/23$921

Find flight deals from Portugal to San Diego

Keep the following information in mind while searching for Portugal to San Diego flight deals. Data was last updated March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$886
(Ticket)

One-way from

$354
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$3,947
Provider with most accurate pricing for Lisbon Humberto Delgado-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Diego flights.
Search Deals
From Portugal to San Diego
Search Deals
One-way flight from Portugal to San Diego
Search Deals
Highest demand for flights based on searches. 39% potential increase in price ($794 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 25% potential price decrease ($249 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to San Diego 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, Cheapflights users made 2,558,603 searches. Data last updated March 24, 2026.
Use the filters below to find and compare flights from Portugal to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 5/20

5:00 am-6:07 pm

2 stops21h 07m

San Diego

Sat 5/30

1:37 pm-5:50 pm

2 stops20h 13m

$911

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 4/13

5:00 am-5:34 pm

2 stops20h 34m

San Diego

Mon 4/27

11:40 am-5:50 pm

2 stops22h 10m

$915

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 4/20

5:00 am-6:19 pm

2 stops21h 19m

San Diego

Sun 5/3

6:25 am-11:15 am

2 stops20h 50m

$916
Quickest round-trip

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Fri 4/10

12:45 pm-9:07 pm

1 stop16h 22m

San Diego

Thu 4/16

2:45 pm-6:45 pm

2 stops20h 00m

$939

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 5/6

10:00 am-11:55 pm

1 stop21h 55m

San Diego

Wed 5/13

6:30 am-10:55 am

2 stops20h 25m

$939

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Thu 4/16

5:00 am-3:55 pm

2 stops18h 55m

San Diego

Thu 4/23

6:25 am-10:55 am

2 stops20h 30m

$946
Cheapest one-way

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Sun 4/26

8:20 pm-10:00 am

2 stops45h 40m

$564

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Fri 7/3

8:00 am-8:58 pm

3 stops44h 58m

$594

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Tue 5/19

11:05 am-10:49 pm

1 stop19h 44m

$613

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 7/6

11:05 am-8:50 pm

1 stop17h 45m

$871

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 13 resultsSorted by cheapest first
1
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Best time to book a flight from Portugal to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to San Diego

What is the cheapest month to book a flight from Portugal to San Diego?

Currently, August is the cheapest month in which you can book a flight from Portugal to San Diego (average of $746). Flying from Portugal to San Diego in March is currently the most expensive (average of $1,993). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Portugal to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from Portugal?

    If you book a flight to San Diego from Portugal, you will be flying to San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego.

  • How long is the flight from Portugal to San Diego?

    A quick flight from Portugal to San Diego can take about 21h 07m. Delta provides one of the quickest options available for as low as $911. The distance between Portugal and San Diego is about 5677 mi.

  • What are the cheapest airlines to fly from Portugal to San Diego one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $568. American Airlines flights start at $640 while deals on Delta start at $796 one-way.

  • Can I find deals for flights from Portugal to San Diego that include hotel bookings?

    Yes. In addition to deals on Portugal to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to San Diego.

  • Can I find deals for business class flights from Portugal to San Diego?

    Yes. Cheapflights offers flight deals from Portugal to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Portugal to San Diego (average of $746). Flying from Portugal to San Diego in March is currently the most expensive (average of $1,993). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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