Portugal

$367+ Cheap flights from San Diego (SAN) to Portugal

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
May 17 — May 241
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Cheap flight deals from San Diego to Portugal

Cheapest flights from San Diego to Portugal
Explore the most affordable flight options available from San Diego to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.

This FlightHub deal was found by Cheapflights users on 4/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:50 am
SAN
-
LIS
2 stops38h 00m
Multiple Airlines
Thu 11/126:10 am
LIS
-
SAN
1 stop17h 35m
Multiple Airlines
Deal found 4/14$706
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 pm
SAN
-
LIS
1 stop19h 45m
British Airways
Thu 11/1211:05 am
LIS
-
SAN
1 stop15h 48m
British Airways
Deal found 4/16$707
This FlightHub deal was found by Cheapflights users on 4/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:35 pm
SAN
-
LIS
1 stop21h 55m
Lufthansa
Thu 11/126:10 am
LIS
-
SAN
1 stop17h 35m
Lufthansa
Deal found 4/13$708
This Expedia deal was found by Cheapflights users on 4/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 pm
SAN
-
LIS
1 stop16h 55m
Multiple Airlines
Sun 11/154:10 pm
LIS
-
SAN
2 stops36h 15m
Multiple Airlines
Deal found 4/14$709
This Orbitz deal was found by Cheapflights users on 4/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 pm
SAN
-
LIS
1 stop20h 30m
Multiple Airlines
Sun 11/154:10 pm
LIS
-
SAN
2 stops36h 15m
Multiple Airlines
Deal found 4/16$710
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 10/299:45 am
SAN
-
LIS
2 stops22h 25m
Delta
Sat 11/75:00 am
LIS
-
SAN
1 stop15h 05m
Delta
Deal found 4/13$711
This KLM deal was found by Cheapflights users on 4/16. 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.
Thu 10/293:00 pm
SAN
-
LIS
1 stop36h 35m
KLM
Sat 11/75:00 am
LIS
-
SAN
1 stop15h 05m
KLM
Deal found 4/16$712
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Sat 4/259:45 pm
SAN
-
LIS
1 stop28h 45m
United Airlines
Tue 5/511:25 am
LIS
-
SAN
2 stops39h 08m
United Airlines
Deal found 4/15$713
This Cheapflightsfares deal was found by Cheapflights users on 4/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 pm
SAN
-
LIS
1 stop16h 55m
British Airways
Sun 11/157:05 am
LIS
-
SAN
1 stop17h 00m
British Airways
Deal found 4/15$716
This KLM deal was found by Cheapflights users on 4/15. 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 11/27:00 am
SAN
-
LIS
1 stop17h 00m
KLM
Sun 11/1511:25 am
LIS
-
SAN
2 stops20h 30m
KLM
Deal found 4/15$717
This Delta deal was found by Cheapflights users on 4/12. 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 12/2510:00 pm
SAN
-
LIS
1 stop27h 00m
Delta
Sat 1/95:00 am
LIS
-
SAN
1 stop15h 05m
Delta
Deal found 4/12$718
This KLM deal was found by Cheapflights users on 4/14. 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.
Tue 11/32:00 pm
SAN
-
OPO
1 stop17h 25m
KLM
Thu 11/125:00 am
OPO
-
SAN
1 stop15h 05m
KLM
Deal found 4/14$748

Find flight deals from San Diego to Portugal

Keep the following information in mind while searching for San Diego to Portugal flight deals. Data was last updated April 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$712
(KLM)

One-way from

$367
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$707
Provider with most accurate pricing for San Diego-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for San Diego-Lisbon Humberto Delgado flights.
From San Diego to Portugal
One-way flight from San Diego to Portugal
Highest demand for flights based on searches. 16% potential increase in price ($145 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Portugal 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 April 17, 2026.
Use the filters below to find and compare flights from San Diego to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 8/11

7:00 am-9:20 am

1 stop18h 20m

Lisbon Humberto Delgado

Mon 8/31

12:20 pm-8:29 pm

1 stop16h 09m

$806

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 5/13

2:30 pm-10:15 pm

2 stops23h 45m

Porto

Wed 5/20

5:00 am-10:26 pm

2 stops25h 26m

$857

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Fri 5/1

1:40 pm-5:50 pm

2 stops20h 10m

Lisbon Humberto Delgado

Mon 5/11

5:00 am-8:35 pm

2 stops23h 35m

$863

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/15

11:50 am-3:25 pm

2 stops19h 35m

Porto

Wed 9/30

5:00 am-6:54 pm

2 stops21h 54m

$885

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Sun 10/11

7:40 pm-10:20 am

1 stop30h 40m

Faro

Tue 10/20

3:40 pm-5:50 pm

1 stop34h 10m

$890

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Mon 10/12

4:45 pm-10:45 am

1 stop34h 00m

Faro

Tue 10/20

3:40 pm-2:55 pm

1 stop31h 15m

$900

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/28

1:40 pm-2:35 pm

1 stop16h 55m

Lisbon Humberto Delgado

Mon 5/25

3:35 pm-11:50 am

1 stop28h 15m

$908

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/30

7:30 am-11:15 am

2 stops19h 45m

Lisbon Humberto Delgado

Mon 5/4

5:00 am-8:42 pm

2 stops23h 42m

$931

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 8/24

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Mon 9/21

11:55 am-11:50 am

1 stop31h 55m

$938

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Fri 7/3

6:55 pm-10:35 am

2 stops31h 40m

Lisbon Humberto Delgado

Fri 7/17

12:20 pm-9:33 am

2 stops29h 13m

$948

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 51 resultsSorted by cheapest first
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Best time to book a flight from San Diego to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from San Diego 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 San Diego to Portugal

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

Currently, December is the cheapest month in which you can book a flight from San Diego to Portugal (average of $443). Flying from San Diego to Portugal in June is currently the most expensive (average of $691). 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 Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated April 17, 2026.
Get a feel of what it's like to fly with Delta,KLM, andUnited Airlines from San Diego to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.1

Comfort

7.9

Food

7.2

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Portugal. 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 from for flights from San Diego to Portugal?

    If you book a flight to Portugal from San Diego, you will be flying from 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 San Diego to Portugal?

    Airlines like Finnair, United Airlines, and Delta fly from San Diego to Portugal in about 18h 20m. The time it takes to get you to your destination can typically vary by up to 5h 30m. San Diego and Portugal are separated by a distance of 5677 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $245. United Airlines flights start at $258 while deals on Air Canada start at $359 one-way.

  • What are the most popular routes from San Diego to Portugal?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Portugal 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 San Diego to Portugal?

    Currently, December is the cheapest month in which you can book a flight from San Diego to Portugal (average of $443). Flying from San Diego to Portugal in June is currently the most expensive (average of $691). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Diego to Portugal

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from San Diego to Portugal

Discover the top 8 airlines that operate flights from San Diego to Portugal. 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 April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$489Average$784FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$490Average$870FlexibilityNo cancel feeOn-time75%
IberiaCheapest$506Average$997FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$520Average$792FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$523Average$1,045FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$536Average$1,001FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$555Average$1,146FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$589Average$819FlexibilityNo cancel feeOn-time67%

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