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$390+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SAN
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
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 February 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/281:15 pm
LIS
-
SAN
2 stops54h 32m
Multiple Airlines
Mon 3/167:35 am
SAN
-
LIS
1 stop21h 05m
Multiple Airlines
Deal found 2/3$830
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:35 pm
LIS
-
SAN
2 stops46h 55m
Multiple Airlines
Fri 3/136:35 pm
SAN
-
LIS
1 stop35h 45m
Multiple Airlines
Deal found 2/2$886
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:55 am
LIS
-
SAN
2 stops33h 57m
Multiple Airlines
Sat 4/188:42 am
SAN
-
LIS
1 stop18h 18m
Multiple Airlines
Deal found 2/4$899
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:00 am
LIS
-
SAN
2 stops20h 29m
United Airlines
Sun 3/86:15 am
SAN
-
LIS
2 stops21h 00m
United Airlines
Deal found 2/3$903
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:30 pm
LIS
-
SAN
1 stop28h 35m
Multiple Airlines
Tue 2/249:50 am
SAN
-
LIS
2 stops17h 30m
Multiple Airlines
Deal found 2/4$904
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:00 am
LIS
-
SAN
2 stops20h 33m
United Airlines
Sun 3/226:15 am
SAN
-
LIS
2 stops18h 55m
United Airlines
Deal found 2/2$906
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:45 pm
LIS
-
SAN
1 stop24h 05m
KLM
Sun 4/197:05 am
SAN
-
LIS
1 stop16h 55m
KLM
Deal found 2/4$907
This KLM deal was found by Cheapflights users on 2/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:30 pm
LIS
-
SAN
1 stop28h 35m
KLM
Tue 2/247:00 am
SAN
-
LIS
1 stop18h 00m
KLM
Deal found 2/4$908
This Delta deal was found by Cheapflights users on 2/4. 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 2/205:00 am
LIS
-
SAN
2 stops23h 45m
Delta
Tue 2/2410:40 am
SAN
-
LIS
2 stops22h 50m
Delta
Deal found 2/4$909
This Delta deal was found by Cheapflights users on 2/3. 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 03m
Delta
Sat 5/307:00 am
SAN
-
LIS
2 stops20h 15m
Delta
Deal found 2/3$910

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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$830
(Kiwi.com)

One-way from

$390
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$837
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. 3% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 4, 2026.
Use the filters below to find and compare flights from Portugal to San Diego that are best for you.

Fly from

Portugal

Fly to

San Diego

Route

Depart

Return

Price

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Sat 2/28

1:15 pm-11:47 am

2 stops54h 32m

San Diego

Mon 3/16

7:35 am-11:40 am

1 stop21h 05m

$830

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 2/25

7:35 pm-10:30 am

2 stops46h 55m

San Diego

Fri 3/13

6:35 pm-1:20 pm

1 stop35h 45m

$886

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 4/13

11:55 am-1:52 pm

2 stops33h 57m

San Diego

Sat 4/18

8:42 am-11:00 am

1 stop18h 18m

$899

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 3/4

5:00 am-10:44 pm

2 stops25h 44m

San Diego

Sun 3/8

8:30 am-10:15 am

1 stop18h 45m

$903

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Fri 2/20

3:30 pm-12:05 pm

1 stop28h 35m

San Diego

Tue 2/24

9:50 am-11:20 am

2 stops17h 30m

$904

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Sat 2/28

5:00 am-9:24 pm

2 stops24h 24m

San Diego

Mon 3/16

6:15 am-8:10 am

2 stops18h 55m

$905

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 3/11

5:00 am-5:26 pm

2 stops19h 26m

San Diego

Sun 3/22

8:30 am-10:15 am

1 stop18h 45m

$906

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Wed 3/4

5:40 pm-11:47 am

2 stops50h 07m

$455

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 5/4

11:35 am-11:34 am

2 stops55h 59m

$525

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

Mon 4/6

9:00 am-7:11 pm

3 stops42h 11m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 16 results
1
2

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, February is the cheapest month in which you can book a flight from Portugal to San Diego (average of $701). Flying from Portugal to San Diego in July is currently the most expensive (average of $985). 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated February 4, 2026.
Read through reviews of airlines operating flights from Portugal to San Diego, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,222 reviews

Food

6.4

Entertainment

6.9

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,222 reviews
American Airlines
7.2
Good
11,222 reviews

Food

6.4

Entertainment

6.9

Comfort

7.2

Overall

7.2

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

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 25h 44m. United Airlines provides one of the quickest options available for as low as $903. 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 Aer Lingus, which is currently one of the cheapest options available, starting at $516. British Airways flights start at $577 while deals on American Airlines start at $642 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, February is the cheapest month in which you can book a flight from Portugal to San Diego (average of $701). Flying from Portugal to San Diego in July is currently the most expensive (average of $985). 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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Top airline flying from Portugal to San Diego

Discover the top airline that operate flights from Portugal to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$777Average$970FlexibilityNo cancel feeOn-time71%

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