HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$296+ 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Diego to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 23, 2025.

This Flightnetwork deal was found by Cheapflights users on 10/22. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:35 pmSAN - OPO
1 stop22h 05mLufthansa
Fri 12/126:15 amOPO - SAN
1 stop17h 30mLufthansa
Deal found 10/22$517
This United deal was found by Cheapflights users on 10/22. 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 11/279:05 amSAN - OPO
2 stops16h 25mMultiple Airlines
Fri 12/126:15 amOPO - SAN
1 stop17h 30mMultiple Airlines
Deal found 10/22$519
This Lufthansa deal was found by Cheapflights users on 10/22. 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 10/22$526
This Delta deal was found by Cheapflights users on 10/22. 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 11/276:35 amSAN - OPO
2 stops43h 55mDelta
Fri 12/126:30 amOPO - SAN
2 stops22h 12mDelta
Deal found 10/22$536
This Delta deal was found by Cheapflights users on 10/21. 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 12/37:10 amSAN - OPO
2 stops19h 20mDelta
Sun 12/711:15 amOPO - SAN
2 stops38h 57mDelta
Deal found 10/21$541
This KLM deal was found by Cheapflights users on 10/22. 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 10/237:10 amSAN - LIS
1 stop16h 50mMultiple Airlines
Mon 11/311:15 amLIS - SAN
1 stop17h 29mMultiple Airlines
Deal found 10/22$556
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/511:11 amSAN - LIS
2 stops15h 04mUnited Airlines
Fri 12/1210:15 amLIS - SAN
2 stops21h 27mUnited Airlines
Deal found 10/21$560
This Delta deal was found by Cheapflights users on 10/22. 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 10/236:20 amSAN - LIS
2 stops17h 40mDelta
Mon 11/311:15 amLIS - SAN
1 stop17h 29mDelta
Deal found 10/22$561
This Expedia deal was found by Cheapflights users on 10/21. 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 12/25:35 pmSAN - OPO
2 stops20h 50mLufthansa
Tue 12/91:45 pmOPO - SAN
1 stop34h 00mLufthansa
Deal found 10/21$568
This Finnair deal was found by Cheapflights users on 10/22. 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.
Thu 11/206:35 amSAN - LIS
1 stop18h 30mMultiple Airlines
Wed 11/2611:05 amLIS - SAN
1 stop15h 54mMultiple Airlines
Deal found 10/22$572
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Sat 11/85:55 pmSAN - LIS
2 stops21h 35mLufthansa
Wed 11/196:10 amLIS - SAN
1 stop17h 35mLufthansa
Deal found 10/20$576
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Sat 11/86:00 pmSAN - LIS
1 stop31h 50mBritish Airways
Wed 11/1910:40 amLIS - SAN
1 stop37h 30mBritish Airways
Deal found 10/20$580

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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$517
(Flightnetwork)

One-way from

$296
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$763
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. 8% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 23, 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

Mon 1/12

10:52 am-11:15 am

2 stops40h 23m

Porto

Mon 1/19

12:05 pm-10:33 pm

2 stops42h 28m

$526

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 12/3

5:35 pm-11:40 pm

1 stop22h 05m

Porto

Sun 12/7

6:15 am-3:45 pm

1 stop17h 30m

$526

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 1/8

4:00 pm-11:10 am

2 stops35h 10m

Porto

Mon 1/19

12:05 pm-10:33 pm

2 stops42h 28m

$526

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 2/18

7:00 am-10:30 am

2 stops19h 30m

Porto

Mon 2/23

6:30 am-12:05 pm

1 stop37h 35m

$531

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Wed 2/18

7:00 am-10:30 am

2 stops19h 30m

Porto

Wed 2/25

11:15 am-12:05 pm

1 stop32h 50m

$531

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 2/14

6:15 am-10:30 am

2 stops20h 15m

Porto

Fri 2/20

6:30 am-12:05 pm

1 stop37h 35m

$531

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 2/17

6:15 am-10:30 am

2 stops20h 15m

Porto

Wed 2/25

11:15 am-12:05 pm

1 stop32h 50m

$531

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 2/13

10:00 am-10:30 am

2 stops40h 30m

Porto

Mon 2/23

6:30 am-12:05 pm

1 stop37h 35m

$532

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 2/13

10:00 am-10:30 am

2 stops40h 30m

Porto

Fri 2/20

6:30 am-12:05 pm

1 stop37h 35m

$532

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Fri 2/13

10:00 am-10:30 am

2 stops40h 30m

Porto

Wed 2/25

11:15 am-12:05 pm

1 stop32h 50m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 49 results
1
2
3
...
5

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 $548). Flying from San Diego to Portugal in June is currently the most expensive (average of $755). 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 October 23, 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 October 23, 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
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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
7,981 reviews
Delta
7.9
Good
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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
8,991 reviews
Delta
7.9
Good
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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
11,028 reviews
Delta
7.9
Good
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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
10,346 reviews
Delta
7.9
Good
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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
7,467 reviews
Delta
7.9
Good
7,981 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Entertainment

7.9

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 SWISS, Lufthansa, and Delta fly from San Diego to Portugal in about 19h 30m. The time it takes to get you to your destination can typically vary by up to 20h 53m. 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 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 $548). Flying from San Diego to Portugal in June is currently the most expensive (average of $755). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Charles de Gaulle flights
San Francisco to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Los Angeles to Gatwick flights
Los Angeles to Madrid flights
Los Angeles to Istanbul flights
Los Angeles to London City flights
San Francisco to Gatwick flights
Los Angeles to Orly flights
San Francisco to London City flights
Los Angeles to Frankfurt flights
Los Angeles to Lisbon flights
Los Angeles to Barcelona-El Prat flights
San Francisco to Istanbul flights
San Francisco to Leonardo da Vinci/Fiumicino flights
San Francisco to Lisbon flights
Ontario to Heathrow flights
Ontario to Charles de Gaulle flights
San Francisco to Frankfurt flights
Los Angeles to Luton flights
San Diego to Heathrow flights
San Francisco to Barcelona-El Prat flights
Los Angeles to Amsterdam flights
Santa Ana to Heathrow flights
San Francisco to Amsterdam flights
San Francisco to Dublin flights
Los Angeles to Dublin flights
San Francisco to Luton flights
San Francisco to Madrid flights
San Francisco to Zurich flights
Santa Ana to Charles de Gaulle flights
Los Angeles to Stansted flights
San Francisco to Stansted flights
Los Angeles to Zurich flights
Los Angeles to Munich flights
Ontario to Leonardo da Vinci/Fiumicino flights
Los Angeles to Athens flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Burbank to Charles de Gaulle flights
Los Angeles to Malpensa flights
Las Vegas to Heathrow flights
San Francisco to Malpensa flights
Los Angeles to Sabiha Gokcen flights
San Francisco to Munich flights
San Francisco to Orly flights
San Jose to Heathrow flights
Los Angeles to Linate flights
Oakland to Charles de Gaulle flights

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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest$565Average$913FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$573Average$867FlexibilityNo cancel feeOn-time76%
DeltaCheapest$586Average$827FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$593Average$675FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$599Average$1,159FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$612Average$1,058FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$626Average$1,201FlexibilityNo cancel feeOn-time71%
KLMCheapest$626Average$750FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$638Average$971FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.