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Portugal

$322+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/267:00 amSAN - LIS
2 stops19h 15mUnited Airlines
Mon 12/2911:55 amLIS - SAN
2 stops29h 44mUnited Airlines
Deal found 12/17$1,197
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/259:30 pmSAN - LIS
1 stop28h 45mUnited Airlines
Mon 12/2911:55 amLIS - SAN
2 stops29h 44mUnited Airlines
Deal found 12/17$1,210
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:35 pmSAN - LIS
1 stop21h 55mLufthansa
Sun 12/285:00 amLIS - SAN
2 stops22h 57mLufthansa
Deal found 12/17$1,275
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:00 amSAN - LIS
2 stops15h 15mLufthansa
Sun 12/285:00 amLIS - SAN
2 stops22h 57mLufthansa
Deal found 12/17$1,282
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/246:30 amSAN - LIS
2 stops19h 45mUnited Airlines
Sun 12/2811:55 amLIS - SAN
2 stops29h 44mUnited Airlines
Deal found 12/17$1,291
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/249:30 pmSAN - LIS
1 stop28h 45mUnited Airlines
Mon 12/2911:55 amLIS - SAN
2 stops33h 04mUnited Airlines
Deal found 12/17$1,312
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:50 pmSAN - LIS
1 stop13h 25mUnited Airlines
Wed 12/246:10 amLIS - SAN
2 stops19h 24mUnited Airlines
Deal found 12/16$1,315
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:30 pmSAN - LIS
2 stops25h 40mUnited Airlines
Thu 1/155:00 amLIS - SAN
2 stops36h 40mUnited Airlines
Deal found 12/16$1,324
This Finnair deal was found by Cheapflights users on 12/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:30 amSAN - LIS
1 stop16h 25mMultiple Airlines
Wed 12/2411:05 amLIS - SAN
1 stop15h 48mMultiple Airlines
Deal found 12/16$1,326
This Gotogate deal was found by Cheapflights users on 12/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:45 pmSAN - LIS
2 stops21h 45mLufthansa
Wed 12/2411:55 amLIS - SAN
2 stops40h 52mLufthansa
Deal found 12/16$1,343
This Air France deal was found by Cheapflights users on 12/16. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:25 amSAN - OPO
2 stops19h 05mMultiple Airlines
Thu 1/16:35 amOPO - SAN
2 stops22h 28mMultiple Airlines
Deal found 12/16$2,112
This Kiwi.com deal was found by Cheapflights users on 12/18. 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.
Fri 12/268:25 amSAN - PDL
2 stops27h 10mMultiple Airlines
Thu 1/15:45 pmPDL - SAN
1 stop23h 15mMultiple Airlines
Deal found 12/18$2,237

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$434
(Kiwi.com)

One-way from

$322
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,452
Provider with most accurate pricing for San Diego-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Lisbon Humberto Delgado flights.
Search Deals
From San Diego to Portugal
Search Deals
One-way flight from San Diego to Portugal
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 2025.
Use the filters below to find and compare flights from San Diego to Portugal that are best for you.

Fly from

San Diego

Fly to

Portugal

Route

Depart

Return

Price

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-10:30 am

1 stop36h 30m

Porto

Fri 3/20

4:10 pm-1:05 pm

1 stop27h 55m

$484

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 1/12

6:15 am-8:10 am

2 stops17h 55m

Lisbon Humberto Delgado

Thu 1/22

5:00 am-7:54 pm

2 stops22h 54m

$485

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 1/12

9:24 am-9:05 am

1 stop15h 41m

Lisbon Humberto Delgado

Thu 1/22

10:55 am-8:41 pm

2 stops17h 46m

$497

San DiegoFaro

SAN - FAO

SANFAO

San Diego

Fri 2/6

11:43 am-4:55 pm

2 stops21h 12m

Faro

Tue 2/17

7:45 pm-8:37 pm

2 stops32h 52m

$497

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 1/31

6:15 am-10:30 am

2 stops20h 15m

Porto

Sat 2/7

5:00 am-8:48 pm

2 stops23h 48m

$499

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 1/24

12:46 pm-10:30 pm

2 stops25h 44m

Lisbon Humberto Delgado

Sun 2/1

3:55 pm-4:10 pm

1 stop32h 15m

$504

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 1/15

9:24 am-9:05 am

1 stop15h 41m

Lisbon Humberto Delgado

Mon 1/26

11:05 am-10:58 pm

1 stop19h 53m

$506

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 1/1

7:00 am-10:15 am

2 stops19h 15m

Lisbon Humberto Delgado

Thu 2/5

11:20 am-11:48 am

2 stops32h 28m

$541

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 1/31

10:52 am-11:40 am

2 stops40h 48m

Porto

Sat 2/7

12:30 pm-8:49 pm

3 stops64h 19m

$542

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 1/1

7:00 am-10:15 am

2 stops19h 15m

Lisbon Humberto Delgado

Fri 2/6

10:55 am-8:49 pm

3 stops41h 54m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 53 results
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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, February is the cheapest month in which you can book a flight from San Diego to Portugal (average of $451). Flying from San Diego to Portugal in June is currently the most expensive (average of $731). 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.

What is the cheapest time of day to fly from SAN to PT?

Find hourly flight availability from San Diego to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s typically best to fly out from San Diego to Portugal in the evening. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from San Diego to Portugal?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to Portugal flight should consider departing on Monday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and Air Canada 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.
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
United Airlines
7.4
Good
9,093 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
Air Canada
7.1
Good
10,534 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
Lufthansa
6.8
Okay
7,635 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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.
British Airways
6.7
Okay
7,585 reviews
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

Crew

8.5

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 KLM, United Airlines, and British Airways fly from San Diego to Portugal in about 15h 20m. The time it takes to get you to your destination can typically vary by up to 21h 10m. San Diego and Portugal are separated by a distance of 5801 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 Air Canada, which is currently one of the cheapest options available, starting at $359. United Airlines flights start at $408 while deals on British Airways start at $411 one-way.

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

    When deciding which route to take from San Diego to Portugal consider San Diego - Lisbon Humberto Delgado, San Diego - Porto or San Diego - Faro as they are the most popular.

  • 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, February is the cheapest month in which you can book a flight from San Diego to Portugal (average of $451). Flying from San Diego to Portugal in June is currently the most expensive (average of $731). 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

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Top 9 airlines flying from San Diego to Portugal

Discover the top 9 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$750FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$549Average$823FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$555Average$1,207FlexibilityNo cancel feeOn-time71%
IberiaCheapest$565Average$913FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$565Average$675FlexibilityNo cancel feeOn-time72%
DeltaCheapest$586Average$822FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$586Average$1,216FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$587Average$1,156FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$601Average$972FlexibilityNo cancel feeOn-time67%

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