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Portugal

$328+ 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
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 26, 2025.

This United Airlines deal was found by Cheapflights users on 12/24. 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 12/244:10 pmSAN - LIS
2 stops34h 05mUnited Airlines
Wed 12/315:00 amLIS - SAN
2 stops22h 57mUnited Airlines
Deal found 12/24$884
This FlightHub deal was found by Cheapflights users on 12/24. 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.
Wed 12/245:35 pmSAN - LIS
1 stop21h 55mLufthansa
Wed 12/315:00 amLIS - SAN
2 stops22h 57mLufthansa
Deal found 12/24$892
This Delta deal was found by Cheapflights users on 12/24. 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 12/256:15 amSAN - OPO
2 stops25h 10mDelta
Sat 1/105:00 amOPO - SAN
2 stops25h 31mDelta
Deal found 12/24$1,354
This Expedia deal was found by Cheapflights users on 12/25. 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 12/2911:00 amSAN - LIS
2 stops15h 15mMultiple Airlines
Wed 12/311:40 pmLIS - SAN
2 stops37h 01mMultiple Airlines
Deal found 12/25$1,446
This FlightHub deal was found by Cheapflights users on 12/24. 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.
Thu 12/255:35 pmSAN - OPO
1 stop22h 05mLufthansa
Sat 1/104:15 pmOPO - SAN
2 stops35h 39mLufthansa
Deal found 12/24$1,531
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/257:40 amSAN - OPO
3 stops44h 00mUnited Airlines
Sat 1/106:00 amOPO - SAN
2 stops35h 20mUnited Airlines
Deal found 12/24$1,721
This Mytrip deal was found by Cheapflights users on 12/24. 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.
Wed 12/245:35 pmSAN - LIS
2 stops21h 15mMultiple Airlines
Wed 12/318:00 amLIS - SAN
3 stops35h 53mMultiple Airlines
Deal found 12/24$1,876
This Expedia deal was found by Cheapflights users on 12/24. 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.
Tue 12/304:45 pmSAN - LIS
2 stops32h 10mMultiple Airlines
Sun 1/46:00 amLIS - SAN
2 stops46h 18mMultiple Airlines
Deal found 12/24$1,929
This Kiwi.com deal was found by Cheapflights users on 12/24. 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.
Sun 12/285:35 pmSAN - LIS
1 stop21h 55mMultiple Airlines
Sat 1/36:00 amLIS - SAN
2 stops36h 00mMultiple Airlines
Deal found 12/24$1,946
This KAYAK deal was found by Cheapflights users on 12/24. 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.
Sat 12/2711:00 amSAN - LIS
2 stops15h 15mLufthansa
Sat 1/311:55 amLIS - SAN
2 stops40h 52mLufthansa
Deal found 12/24$1,982
This KAYAK deal was found by Cheapflights users on 12/24. 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.
Sat 12/279:30 pmSAN - LIS
1 stop28h 45mLufthansa
Sun 1/411:55 amLIS - SAN
1 stop16h 57mLufthansa
Deal found 12/24$1,991
This Kiwi.com deal was found by Cheapflights users on 12/24. 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.
Sun 12/285:35 pmSAN - LIS
1 stop21h 55mMultiple Airlines
Sun 1/46:00 amLIS - SAN
2 stops36h 00mMultiple Airlines
Deal found 12/24$2,003

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 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$431
(Kiwi.com)

One-way from

$328
(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 ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% 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 26, 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

9:46 am-10:30 am

2 stops17h 44m

Porto

Fri 3/20

11:15 am-1:05 pm

1 stop32h 50m

$483

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 3/10

3:00 pm-3:25 pm

1 stop17h 25m

Porto

Fri 3/20

4:10 pm-1:05 pm

1 stop27h 55m

$484

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 2/24

8:30 am-10:15 am

1 stop17h 45m

Lisbon Humberto Delgado

Wed 3/4

6:10 am-3:45 pm

1 stop17h 35m

$486

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 2/19

8:30 am-8:10 am

2 stops15h 40m

Lisbon Humberto Delgado

Wed 2/25

6:10 am-3:45 pm

1 stop17h 35m

$486

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 2/23

7:00 am-9:00 am

1 stop18h 00m

Lisbon Humberto Delgado

Mon 3/2

3:30 pm-12:05 pm

1 stop28h 35m

$487

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 1/12

8:10 am-8:10 am

2 stops16h 00m

Lisbon Humberto Delgado

Thu 1/22

5:00 am-10:33 pm

2 stops25h 33m

$487

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

1:40 pm-6:45 pm

1 stop21h 05m

Lisbon Humberto Delgado

Tue 4/21

5:00 am-11:50 am

1 stop14h 50m

$490

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Wed 2/25

6:30 am-10:15 am

3 stops19h 45m

Lisbon Humberto Delgado

Wed 3/4

6:10 am-3:45 pm

1 stop17h 35m

$490

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

1:40 pm-10:50 pm

1 stop25h 10m

Lisbon Humberto Delgado

Tue 4/21

5:00 am-11:50 am

1 stop14h 50m

$491

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

1:40 pm-6:45 pm

1 stop21h 05m

Lisbon Humberto Delgado

Mon 4/20

7:45 pm-11:50 am

1 stop24h 05m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 46 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 26, 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 26, 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
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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
8,016 reviews
Delta
7.9
Good
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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
9,116 reviews
Delta
7.9
Good
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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
10,562 reviews
Delta
7.9
Good
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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
7,656 reviews
Delta
7.9
Good
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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
7,618 reviews
Delta
7.9
Good
8,016 reviews

Comfort

7.9

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.1

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 Delta fly from San Diego to Portugal in about 17h 25m. The time it takes to get you to your destination can typically vary by up to 2h 35m. San Diego and Portugal are separated by a distance of 5596 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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$490Average$750FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$549Average$823FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$555Average$1,193FlexibilityNo cancel feeOn-time71%
IberiaCheapest$565Average$913FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$565Average$675FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$586Average$1,153FlexibilityNo cancel feeOn-time70%
DeltaCheapest$586Average$824FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$588Average$1,155FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$601Average$971FlexibilityNo cancel feeOn-time67%

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