HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$309+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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

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 4, 2025.

This Virgin Atlantic deal was found by Cheapflights users on 12/3. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:25 amSAN - LIS
1 stop17h 15mVirgin Atlantic
Fri 1/3010:00 amLIS - SAN
1 stop18h 22mVirgin Atlantic
Deal found 12/3$456
This oojo deal was found by Cheapflights users on 12/2. 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.
Wed 12/314:25 pmSAN - LIS
2 stops21h 25mBritish Airways
Fri 1/307:05 amLIS - SAN
2 stops22h 53mBritish Airways
Deal found 12/2$458
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/316:30 amSAN - LIS
2 stops19h 45mUnited Airlines
Fri 1/3011:20 amLIS - SAN
3 stops41h 29mUnited Airlines
Deal found 12/2$469
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Tue 12/27:42 amSAN - LIS
1 stop18h 33mUnited Airlines
Thu 12/116:10 amLIS - SAN
1 stop17h 35mUnited Airlines
Deal found 12/2$479
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Mon 12/110:00 pmSAN - LIS
1 stop28h 15mUnited Airlines
Thu 12/116:10 amLIS - SAN
1 stop17h 35mUnited Airlines
Deal found 12/2$485
This Lufthansa deal was found by Cheapflights users on 12/2. 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.
Tue 12/25:35 pmSAN - LIS
1 stop21h 55mLufthansa
Tue 12/96:10 amLIS - SAN
1 stop17h 35mLufthansa
Deal found 12/2$486
This KLM deal was found by Cheapflights users on 12/2. 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.
Tue 12/27:10 amSAN - LIS
1 stop17h 50mKLM
Tue 12/95:00 amLIS - SAN
2 stops21h 06mKLM
Deal found 12/2$487
This Air France deal was found by Cheapflights users on 12/2. 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.
Tue 12/29:50 amSAN - LIS
2 stops17h 30mMultiple Airlines
Tue 12/95:00 amLIS - SAN
2 stops21h 06mMultiple Airlines
Deal found 12/2$491
This Delta deal was found by Cheapflights users on 12/2. 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.
Mon 12/110:29 pmSAN - LIS
1 stop25h 31mDelta
Thu 12/115:30 amLIS - SAN
2 stops23h 35mDelta
Deal found 12/2$492
This Delta deal was found by Cheapflights users on 12/2. 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.
Mon 12/19:50 pmSAN - LIS
2 stops27h 10mDelta
Tue 12/95:30 amLIS - SAN
2 stops25h 24mDelta
Deal found 12/2$493
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Mon 12/88:45 amSAN - LIS
2 stops17h 30mUnited Airlines
Wed 12/1711:00 amLIS - SAN
2 stops39h 43mUnited Airlines
Deal found 12/2$494
This Lufthansa deal was found by Cheapflights users on 12/2. 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.
Tue 12/25:35 pmSAN - LIS
1 stop21h 55mLufthansa
Mon 12/82:10 pmLIS - SAN
1 stop33h 35mLufthansa
Deal found 12/2$495

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 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$417
(Kiwi.com)

One-way from

$309
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$1,453
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 ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($49 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 4, 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

Mon 1/12

9:00 am-8:10 am

2 stops15h 10m

Lisbon Humberto Delgado

Thu 1/22

10:15 am-8:42 pm

2 stops18h 27m

$448

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 1/20

7:05 am-8:00 am

1 stop16h 55m

Lisbon Humberto Delgado

Tue 1/27

10:00 am-9:05 pm

1 stop19h 05m

$456

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 2/23

7:00 am-10:15 am

2 stops19h 15m

Lisbon Humberto Delgado

Tue 3/24

6:10 am-4:45 pm

1 stop17h 35m

$456

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 3/2

6:25 am-9:00 am

2 stops18h 35m

Lisbon Humberto Delgado

Thu 3/12

10:40 am-10:52 pm

2 stops19h 12m

$460

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 2/22

10:15 pm-9:00 am

1 stop26h 45m

Lisbon Humberto Delgado

Thu 3/26

5:00 am-1:05 pm

1 stop15h 05m

$469

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 1/18

7:05 am-8:00 am

1 stop16h 55m

Lisbon Humberto Delgado

Sun 1/25

5:30 am-6:53 pm

2 stops21h 23m

$477

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Mon 1/12

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 1/21

6:10 am-3:45 pm

1 stop17h 35m

$480

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Fri 2/20

5:00 pm-9:20 am

2 stops56h 20m

Lisbon Humberto Delgado

Sun 3/1

5:00 am-10:24 am

2 stops37h 24m

$481

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Wed 2/25

6:00 pm-9:55 am

1 stop31h 55m

Lisbon Humberto Delgado

Sun 3/22

6:40 pm-5:10 pm

1 stop29h 30m

$483

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 1/11

6:00 pm-5:45 pm

1 stop15h 45m

Lisbon Humberto Delgado

Tue 1/20

4:00 pm-4:10 pm

1 stop32h 10m

$483

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 45 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 $462). Flying from San Diego to Portugal in June is currently the most expensive (average of $733). 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 4, 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 4, 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
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
10,500 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
7,612 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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
7,562 reviews
Delta
7.9
Good
8,011 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

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 United Airlines, Delta, and Virgin Atlantic fly from San Diego to Portugal in about 15h 10m. The time it takes to get you to your destination can typically vary by up to 3h 25m. 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 $359. British Airways flights start at $411 while deals on American Airlines start at $418 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 $462). Flying from San Diego to Portugal in June is currently the most expensive (average of $733). 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
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to Istanbul flights
Los Angeles to Orly flights
Los Angeles to London City flights
San Francisco to Barcelona-El Prat flights
San Francisco to Gatwick flights
San Francisco to Lisbon flights
Los Angeles to Madrid flights
Los Angeles to Barcelona-El Prat flights
Los Angeles to Dublin flights
San Francisco to London City flights
San Francisco to Istanbul flights
Los Angeles to Stansted flights
Los Angeles to Amsterdam flights
Los Angeles to Frankfurt flights
Los Angeles to Lisbon flights
San Francisco to Amsterdam flights
San Francisco to Frankfurt flights
Ontario to Heathrow flights
Ontario to Charles de Gaulle flights
San Diego to Heathrow flights
Los Angeles to Zurich flights
San Francisco to Dublin flights
San Francisco to Stansted flights
San Francisco to Zurich flights
Ontario to Leonardo da Vinci/Fiumicino flights
Los Angeles to Copenhagen flights
San Francisco to Madrid flights
Los Angeles to Luton flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
San Francisco to Orly flights
Los Angeles to Athens flights
Los Angeles to Malpensa flights
Santa Ana to Charles de Gaulle flights
San Jose to Charles de Gaulle flights
Los Angeles to Sabiha Gokcen flights
San Francisco to Athens flights
Los Angeles to Beauvais-Tille flights
San Francisco to Malpensa flights
Los Angeles to Munich flights
San Francisco to Munich flights
San Francisco to Luton flights
Santa Ana to Heathrow flights
Los Angeles to Linate 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$549Average$831FlexibilityNo cancel feeOn-time76%
IberiaCheapest$565Average$913FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$565Average$675FlexibilityNo cancel feeOn-time72%
DeltaCheapest$586Average$805FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$596Average$1,158FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$599Average$1,240FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$621Average$1,202FlexibilityNo cancel feeOn-time71%
KLMCheapest$626Average$750FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$638Average$974FlexibilityNo 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.