HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$381+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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.

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 abril 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$729
(Delta)

One-way from

$381
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$957
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. 2% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 17, 2025.

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.
mar. 10/288:50 amSAN - OPO
2 stops19h 00mKLM
mar. 11/115:00 amOPO - SAN
1 stop15h 05mKLM
Deal found 4/16$649
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/285:15 pmSAN - OPO
2 stops18h 25mSWISS
mar. 11/117:30 pmOPO - SAN
2 stops32h 46mSWISS
Deal found 4/16$656
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/21:35 pmSAN - LIS
2 stops20h 15mDelta
dom. 10/125:40 amLIS - SAN
2 stops21h 16mDelta
Deal found 4/16$685
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/2310:30 pmSAN - OPO
2 stops26h 55mMultiple Airlines
mié. 10/18:40 amOPO - SAN
2 stops21h 34mMultiple Airlines
Deal found 4/15$706
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/2110:15 amSAN - OPO
2 stops15h 30mUnited Airlines
mar. 10/2812:35 pmOPO - SAN
2 stops28h 36mUnited Airlines
Deal found 4/16$721
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/288:00 amSAN - OPO
2 stops23h 30mDelta
mar. 5/136:20 amOPO - SAN
2 stops22h 17mDelta
Deal found 4/16$729
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/305:15 pmSAN - LIS
1 stop20h 35mUnited Airlines
mié. 5/711:25 amLIS - SAN
2 stops18h 54mUnited Airlines
Deal found 4/16$743
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/134:00 pmSAN - LIS
2 stops23h 20mSWISS
mié. 5/215:55 amLIS - SAN
2 stops23h 00mSWISS
Deal found 4/16$746
This Air France 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/31:55 pmSAN - LIS
1 stop16h 40mMultiple Airlines
mié. 9/312:45 pmLIS - SAN
2 stops19h 32mMultiple Airlines
Deal found 4/16$750
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.
dom. 8/31:55 pmSAN - LIS
1 stop20h 45mKLM
mar. 9/25:00 amLIS - SAN
2 stops18h 21mKLM
Deal found 4/16$754
This SWISS deal was found by Cheapflights users on 4/17. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:04 pmSAN - FAO
2 stops35h 16mSWISS
mié. 11/2612:10 pmFAO - SAN
2 stops41h 37mSWISS
Deal found 4/17$758
This British Airways deal was found by Cheapflights users on 4/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/186:10 pmSAN - LIS
1 stop15h 35mBritish Airways
vie. 11/287:05 amLIS - SAN
1 stop17h 00mBritish Airways
Deal found 4/17$763

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 abril 17, 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 DiegoLisbon

SAN - LIS

SANLIS

San Diego

jue. 10/2

1:35 pm-5:50 pm

2 stops20h 15m

Lisbon Humberto Delgado

dom. 10/12

5:40 am-6:56 pm

2 stops21h 16m

$685

San DiegoPorto

SAN - OPO

SANOPO

San Diego

mar. 9/23

10:30 pm-9:25 am

2 stops26h 55m

Porto

mié. 10/1

8:40 am-10:14 pm

2 stops21h 34m

$706

San DiegoPorto

SAN - OPO

SANOPO

San Diego

mar. 9/23

1:55 pm-10:15 pm

1 stop24h 20m

Porto

mié. 10/1

4:20 pm-12:00 pm

1 stop27h 40m

$720

San DiegoPorto

SAN - OPO

SANOPO

San Diego

lun. 4/28

8:00 am-3:30 pm

2 stops23h 30m

Porto

mar. 5/13

6:20 am-8:37 pm

2 stops22h 17m

$729

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

mié. 4/30

5:15 pm-9:50 pm

1 stop20h 35m

Lisbon Humberto Delgado

mié. 5/7

11:25 am-10:19 pm

2 stops18h 54m

$743

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

mar. 5/13

4:00 pm-11:20 pm

2 stops23h 20m

Lisbon Humberto Delgado

mié. 5/21

5:55 am-8:55 pm

2 stops23h 00m

$746

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

dom. 8/3

1:55 pm-2:35 pm

1 stop16h 40m

Lisbon Humberto Delgado

mié. 9/3

12:45 pm-12:17 am

2 stops19h 32m

$750

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

dom. 8/3

1:55 pm-6:40 pm

1 stop20h 45m

Lisbon Humberto Delgado

mar. 9/2

5:00 am-3:21 pm

2 stops18h 21m

$754

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

jue. 5/8

5:15 pm-9:50 pm

1 stop20h 35m

Lisbon Humberto Delgado

dom. 5/18

6:15 am-3:25 pm

1 stop17h 10m

$775

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

vie. 9/26

8:10 am-8:20 am

1 stop16h 10m

Lisbon Humberto Delgado

sáb. 10/4

9:50 am-11:52 am

2 stops34h 02m

$780

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 52 results
1
2
3
...
6

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, January is the cheapest month in which you can book a flight from San Diego to Portugal (average of $612). Flying from San Diego to Portugal in June is currently the most expensive (average of $1,203). 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 abril 17, 2025.

When flying from San Diego to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 abril 17, 2025.
To help decide which airline to fly from San Diego to Portugal, see what other customers have to say about Delta, KLM and Air Transat. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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.
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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 Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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 France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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.
SWISS
7.5
Good
1,580 reviews
Delta
8.0
Very good
7,917 reviews

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

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.

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

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $552. SWISS flights start at $553 while deals on Scandinavian Airlines start at $561 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, January is the cheapest month in which you can book a flight from San Diego to Portugal (average of $612). Flying from San Diego to Portugal in June is currently the most expensive (average of $1,203). 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
San Francisco to Barcelona-El Prat flights
San Francisco to Charles de Gaulle flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Los Angeles to Barcelona-El Prat flights
Los Angeles to Madrid flights
Los Angeles to London City flights
Los Angeles to Frankfurt flights
Los Angeles to Istanbul flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Gatwick flights
San Francisco to Istanbul flights
San Francisco to Orly flights
San Francisco to Lisbon flights
Los Angeles to Dublin flights
Los Angeles to Amsterdam flights
San Francisco to Frankfurt flights
Los Angeles to Athens flights
San Francisco to Dublin flights
San Francisco to Athens flights
Los Angeles to Lisbon flights
Los Angeles to Orly flights
San Francisco to Amsterdam flights
San Diego to Heathrow flights
Ontario to Heathrow flights
San Francisco to Malpensa flights
San Francisco to Copenhagen flights
Ontario to Charles de Gaulle flights
San Francisco to Zurich flights
Los Angeles to Luton flights
Los Angeles to Malpensa flights
San Francisco to Linate flights
San Francisco to Madrid flights
Los Angeles to Munich flights
Los Angeles to Zurich flights
Ontario to Leonardo da Vinci/Fiumicino flights
Burbank to Charles de Gaulle flights
San Francisco to Munich flights
Los Angeles to Copenhagen flights
Las Vegas to Heathrow flights
Los Angeles to Linate flights
Los Angeles to Vicenza flights
Ontario to Athens flights
Los Angeles to Frederic Chopin flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Ontario to Barcelona-El Prat flights

Top 10 airlines flying from San Diego to Portugal

Discover the top 10 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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$547Average$1,043FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$589Average$1,176FlexibilityNo cancel feeOn-time77%
IberiaCheapest$598Average$869FlexibilityNo cancel feeOn-time77%
KLMCheapest$626Average$898FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$631Average$868FlexibilityNo cancel feeOn-time77%
DeltaCheapest$666Average$1,013FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$683Average$1,101FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$686Average$1,209FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$775Average$1,034FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$791Average$1,096FlexibilityNo 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.