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Portugal

$351+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find 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 November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:54 amSAN - OPO
2 stops21h 31mUnited Airlines
Wed 12/176:00 amOPO - SAN
2 stops35h 44mUnited Airlines
Deal found 11/12$502
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:54 amSAN - LIS
2 stops29h 36mMultiple Airlines
Sat 11/223:25 pmLIS - SAN
2 stops37h 23mMultiple Airlines
Deal found 11/11$562
This Cheapflightsfares deal was found by Cheapflights users on 11/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:35 pmSAN - OPO
1 stop22h 05mLufthansa
Wed 12/176:00 amOPO - SAN
2 stops22h 45mLufthansa
Deal found 11/12$574
This United Airlines deal was found by Cheapflights users on 11/11. 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 12/127:00 amSAN - LIS
2 stops19h 15mUnited Airlines
Mon 1/1210:15 amLIS - SAN
2 stops18h 32mUnited Airlines
Deal found 11/11$597
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Sun 12/147:42 amSAN - LIS
1 stop18h 33mUnited Airlines
Mon 1/1210:15 amLIS - SAN
2 stops20h 18mUnited Airlines
Deal found 11/11$640
This Air Canada deal was found by Cheapflights users on 11/11. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:08 pmSAN - LIS
2 stops57h 12mAir Canada
Mon 1/1211:20 amLIS - SAN
2 stops38h 04mAir Canada
Deal found 11/11$650
This Faresmojo deal was found by Cheapflights users on 11/11. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:35 pmSAN - LIS
1 stop21h 55mLufthansa
Wed 1/75:00 amLIS - SAN
2 stops18h 45mLufthansa
Deal found 11/11$657
This Cheapflightsfares deal was found by Cheapflights users on 11/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:35 pmSAN - OPO
1 stop22h 05mLufthansa
Tue 12/166:00 amOPO - SAN
2 stops24h 30mLufthansa
Deal found 11/12$668
This United deal was found by Cheapflights users on 11/12. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amSAN - OPO
2 stops18h 30mMultiple Airlines
Fri 12/126:30 amOPO - SAN
1 stop17h 15mMultiple Airlines
Deal found 11/12$672
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:15 amSAN - OPO
2 stops43h 15mUnited Airlines
Fri 12/126:00 amOPO - SAN
2 stops35h 59mUnited Airlines
Deal found 11/12$676
This Lufthansa deal was found by Cheapflights users on 11/11. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:35 pmSAN - OPO
1 stop22h 05mLufthansa
Sun 12/76:15 amOPO - SAN
1 stop17h 30mLufthansa
Deal found 11/11$677
This KAYAK deal was found by Cheapflights users on 11/11. 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 12/115:35 pmSAN - LIS
1 stop21h 55mLufthansa
Sun 1/112:10 pmLIS - SAN
2 stops60h 24mLufthansa
Deal found 11/11$683

Cheap 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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$502
(United Airlines)

One-way from

$351
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$676
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. 6% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 November 13, 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

Wed 12/10

9:54 am-3:25 pm

2 stops21h 31m

Porto

Wed 12/17

6:00 am-9:44 am

2 stops35h 44m

$502

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/7

5:15 pm-10:45 pm

1 stop21h 30m

Lisbon Humberto Delgado

Thu 4/23

6:15 am-3:25 pm

1 stop17h 10m

$540

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 3/29

10:25 pm-8:20 am

2 stops25h 55m

Lisbon Humberto Delgado

Tue 4/7

6:15 am-3:25 pm

1 stop17h 10m

$556

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/23

8:40 pm-8:20 am

2 stops27h 40m

Lisbon Humberto Delgado

Thu 4/30

5:05 am-5:49 pm

2 stops20h 44m

$563

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/10

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Wed 12/17

6:00 am-8:45 pm

2 stops22h 45m

$574

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sat 3/28

12:40 pm-8:20 am

2 stops36h 40m

Lisbon Humberto Delgado

Mon 4/6

11:25 am-11:25 am

2 stops32h 00m

$594

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

1:55 pm-10:50 pm

1 stop24h 55m

Lisbon Humberto Delgado

Tue 4/21

5:00 am-12:00 pm

1 stop15h 00m

$609

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/2

1:55 pm-2:35 pm

1 stop16h 40m

Lisbon Humberto Delgado

Mon 4/6

11:40 am-12:00 pm

1 stop32h 20m

$609

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

1:55 pm-2:35 pm

1 stop16h 40m

Lisbon Humberto Delgado

Mon 4/20

11:40 am-12:00 pm

1 stop32h 20m

$609

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 4/13

9:44 am-9:05 am

1 stop15h 21m

Lisbon Humberto Delgado

Sun 4/19

11:05 am-9:33 pm

1 stop18h 28m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 43 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, November is the cheapest month in which you can book a flight from San Diego to Portugal (average of $535). Flying from San Diego to Portugal in June is currently the most expensive (average of $749). 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 November 13, 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 Saturday at noon 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 November 13, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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.
Delta
7.9
Good
8,008 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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
9,016 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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
10,444 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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
7,516 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Overall

7.9

Food

7.3

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 United Airlines, Lufthansa, and Air Canada fly from San Diego to Portugal in about 21h 30m. The time it takes to get you to your destination can typically vary by up to 15h 10m. 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 Air Canada, which is currently one of the cheapest options available, starting at $394. United Airlines flights start at $399 while deals on TAP AIR PORTUGAL start at $563 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, November is the cheapest month in which you can book a flight from San Diego to Portugal (average of $535). Flying from San Diego to Portugal in June is currently the most expensive (average of $749). 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.

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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$557Average$859FlexibilityNo cancel feeOn-time76%
IberiaCheapest$565Average$882FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$565Average$675FlexibilityNo cancel feeOn-time72%
DeltaCheapest$586Average$831FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$598Average$1,166FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$605Average$1,050FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$621Average$1,215FlexibilityNo cancel feeOn-time71%
KLMCheapest$626Average$750FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$638Average$972FlexibilityNo cancel feeOn-time67%

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