HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$398+ Cheap flights from Portugal to San Diego (SAN)

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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SAN
ene. 15 — ene. 221
jue. 1/15
jue. 1/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portugal to San Diego 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 Portugal to San Diego

Cheapest flights from Portugal to San Diego
Explore the most affordable flight options available from Portugal to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 16, 2025.

This British Airways deal was found by Cheapflights users on 12/14. 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.
mié. 12/2411:05 amLIS - SAN
1 stop15h 48mBritish Airways
vie. 2/69:24 amSAN - LIS
1 stop15h 26mBritish Airways
Deal found 12/14$924
This United Airlines deal was found by Cheapflights users on 12/13. 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.
lun. 12/2211:55 amLIS - SAN
1 stop16h 57mUnited Airlines
mié. 2/46:00 pmSAN - LIS
3 stops29h 55mUnited Airlines
Deal found 12/13$936
This United Airlines deal was found by Cheapflights users on 12/14. 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. 12/2411:55 amLIS - SAN
2 stops18h 56mUnited Airlines
vie. 2/66:30 amSAN - LIS
2 stops17h 40mUnited Airlines
Deal found 12/14$937
This Finnair deal was found by Cheapflights users on 12/13. 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.
lun. 12/2211:05 amLIS - SAN
1 stop18h 40mMultiple Airlines
mié. 2/46:00 pmSAN - LIS
1 stop19h 50mMultiple Airlines
Deal found 12/13$1,027
This oojo deal was found by Cheapflights users on 12/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/215:40 pmLIS - SAN
2 stops48h 39mMultiple Airlines
mié. 12/318:44 pmSAN - LIS
2 stops31h 06mMultiple Airlines
Deal found 12/13$3,653
This Thrive Travel deal was found by Cheapflights users on 12/13. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2211:05 amLIS - SAN
2 stops29h 45mMultiple Airlines
mié. 12/316:20 amSAN - LIS
1 stop16h 35mMultiple Airlines
Deal found 12/13$3,694

Find flight deals from Portugal to San Diego

Keep the following information in mind while searching for Portugal to San Diego flight deals. Data was last updated diciembre 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$844
(FlightHub)

One-way from

$398
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$946
Provider with most accurate pricing for Lisbon Humberto Delgado-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Diego flights.
Search Deals
From Portugal to San Diego
Search Deals
One-way flight from Portugal to San Diego
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($52 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($9 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 Portugal to San Diego 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 diciembre 16, 2025.
Use the filters below to find and compare flights from Portugal to San Diego that are best for you.

Fly from

Portugal

Fly to

San Diego

Route

Depart

Return

Price

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

lun. 1/19

4:55 pm-10:47 pm

2 stops37h 52m

San Diego

lun. 6/8

10:00 am-9:00 am

2 stops39h 00m

$844

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

mar. 1/27

5:00 am-8:48 pm

2 stops23h 48m

San Diego

mar. 2/3

2:55 pm-5:30 pm

2 stops18h 35m

$868

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

jue. 1/29

5:00 am-6:51 pm

2 stops21h 51m

San Diego

jue. 2/5

9:55 am-11:20 am

2 stops17h 25m

$868

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

mar. 1/27

5:00 am-6:51 pm

2 stops21h 51m

San Diego

mar. 2/3

7:05 am-8:00 am

1 stop16h 55m

$879

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

jue. 1/29

5:00 am-6:00 pm

2 stops21h 00m

San Diego

jue. 2/5

7:05 am-8:00 am

1 stop16h 55m

$879

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

lun. 1/12

10:00 am-8:25 pm

1 stop18h 25m

San Diego

dom. 1/25

6:15 am-11:20 am

2 stops21h 05m

$885

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

mar. 1/27

10:00 am-9:05 pm

1 stop19h 05m

San Diego

mar. 2/3

7:05 am-8:00 am

1 stop16h 55m

$889

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

jue. 2/5

5:55 am-9:38 am

2 stops35h 43m

$419

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

jue. 4/30

10:10 pm-8:01 pm

2 stops53h 51m

$531

LisbonSan Diego

LIS - SAN

LISSAN

Lisbon Humberto Delgado

jue. 4/30

11:05 am-6:22 pm

1 stop15h 17m

$575

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 14 results
1
2

Best time to book a flight from Portugal to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Portugal 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 Portugal to San Diego

What is the cheapest month to book a flight from Portugal to San Diego?

Currently, February is the cheapest month in which you can book a flight from Portugal to San Diego (average of $701). Flying from Portugal to San Diego in July is currently the most expensive (average of $985). 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 PT to SAN?

Find hourly flight availability from Portugal to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 16, 2025.

One of the essential ways to save on airfare from Portugal to San Diego is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated diciembre 16, 2025.
Read through reviews of airlines operating flights from Portugal to San Diego, such as United Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,094 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
British Airways
6.7
Okay
7,580 reviews
United Airlines
7.4
Good
9,094 reviews

Entertainment

7.1

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Portugal to San Diego. 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 into for flights to San Diego from Portugal?

    If you book a flight to San Diego from Portugal, you will be flying to 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 Portugal to San Diego?

    A quick flight from Portugal to San Diego can take about 21h 51m. Scandinavian Airlines provides one of the quickest options available for as low as $879. The distance between Portugal and San Diego is about 5677 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $516. British Airways flights start at $596 while deals on American Airlines start at $642 one-way.

  • Can I find deals for flights from Portugal to San Diego that include hotel bookings?

    Yes. In addition to deals on Portugal to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to San Diego.

  • Can I find deals for business class flights from Portugal to San Diego?

    Yes. Cheapflights offers flight deals from Portugal to San Diego 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 Portugal to San Diego?

    Currently, February is the cheapest month in which you can book a flight from Portugal to San Diego (average of $701). Flying from Portugal to San Diego in July is currently the most expensive (average of $985). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
National City
La Mesa
Poway
Julian
Lemon Grove

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 Portugal to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Charles de Gaulle to Los Angeles flights
Frankfurt to Los Angeles flights
Heathrow to Los Angeles flights
Orly to Los Angeles flights
Charles de Gaulle to San Francisco flights
Frankfurt to Las Vegas flights
Charles de Gaulle to Las Vegas flights
Heathrow to San Francisco flights
Beauvais-Tille to Los Angeles flights
Frankfurt to San Francisco flights
Heathrow to Las Vegas flights
Frederic Chopin to Los Angeles flights
Frankfurt to Ontario flights
Frankfurt to Santa Ana flights
Madrid to Los Angeles flights
Munich to San Francisco flights
Frankfurt to San Jose flights
Orly to Las Vegas flights
Frankfurt to Oakland flights
Frankfurt to Long Beach flights
Munich to Los Angeles flights
Charles de Gaulle to Burbank flights
Charles de Gaulle to Sacramento flights
Vienna to Los Angeles flights
Amsterdam to Los Angeles flights
Gatwick to Los Angeles flights
Vienna to San Francisco flights
Orly to Sacramento flights
London City to Los Angeles flights
Malpensa to Los Angeles flights
Bruxelles-National to Los Angeles flights
Istanbul to San Francisco flights
Zurich to Los Angeles flights
Zurich to San Francisco flights
Linate to Los Angeles flights
Barcelona-El Prat to Los Angeles flights
Frankfurt-Hahn to Los Angeles flights
Frankfurt-Hahn to San Francisco flights
Istanbul to Los Angeles flights
Leonardo da Vinci/Fiumicino to Los Angeles flights
Stansted to Los Angeles flights
Gatwick to San Francisco flights
Gatwick to Las Vegas flights
Berlin to Los Angeles flights
Arlanda to Los Angeles flights
Amsterdam to Las Vegas flights

Top 3 airlines flying from Portugal to San Diego

Discover the top 3 airlines that operate flights from Portugal to San Diego. 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 diciembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$704Average$946FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$710Average$872FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$817Average$944FlexibilityNo cancel feeOn-time69%

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.