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Portugal

$297+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LIS
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
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 February 21, 2026.

This KLM deal was found by Cheapflights users on 2/18. 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.
Mon 2/237:00 am
SAN
-
LIS
1 stop18h 00m
KLM
Tue 3/105:00 am
LIS
-
SAN
1 stop15h 05m
KLM
Deal found 2/18$484
This KLM deal was found by Cheapflights users on 2/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/211:40 pm
SAN
-
OPO
1 stop20h 40m
KLM
Tue 4/285:00 am
OPO
-
SAN
1 stop14h 50m
KLM
Deal found 2/17$485
This FlightHub deal was found by Cheapflights users on 2/18. 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 12/911:50 am
SAN
-
LIS
2 stops37h 30m
Multiple Airlines
Thu 12/246:10 am
LIS
-
SAN
1 stop17h 35m
Multiple Airlines
Deal found 2/18$486
This United Airlines deal was found by Cheapflights users on 2/18. 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 2/236:30 am
SAN
-
LIS
2 stops19h 45m
United Airlines
Tue 3/105:00 am
LIS
-
SAN
2 stops23h 23m
United Airlines
Deal found 2/18$487
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/15:35 pm
SAN
-
LIS
1 stop21h 55m
United Airlines
Thu 11/126:10 am
LIS
-
SAN
1 stop17h 35m
United Airlines
Deal found 2/20$488
This Air France deal was found by Cheapflights users on 2/18. 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.
Mon 2/237:00 am
SAN
-
LIS
2 stops17h 00m
Multiple Airlines
Tue 3/105:00 am
LIS
-
SAN
2 stops19h 51m
Multiple Airlines
Deal found 2/18$489
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:10 pm
SAN
-
LIS
2 stops35h 10m
United Airlines
Tue 4/1411:25 am
LIS
-
SAN
2 stops39h 26m
United Airlines
Deal found 2/20$491
This KLM deal was found by Cheapflights users on 2/19. 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 4/141:40 pm
SAN
-
LIS
1 stop25h 10m
KLM
Mon 4/203:35 pm
LIS
-
SAN
1 stop28h 15m
KLM
Deal found 2/19$493
This KLM deal was found by Cheapflights users on 2/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:00 pm
SAN
-
LIS
1 stop36h 35m
KLM
Wed 3/1111:25 am
LIS
-
SAN
1 stop32h 40m
KLM
Deal found 2/21$494
This KLM deal was found by Cheapflights users on 2/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:00 am
SAN
-
LIS
2 stops18h 35m
KLM
Wed 2/2511:25 am
LIS
-
SAN
1 stop32h 40m
KLM
Deal found 2/17$495
This KAYAK deal was found by Cheapflights users on 2/18. 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.
Thu 12/1011:00 am
SAN
-
LIS
2 stops28h 30m
Lufthansa
Thu 12/246:10 am
LIS
-
SAN
1 stop17h 35m
Lufthansa
Deal found 2/18$496
This Orbitz deal was found by Cheapflights users on 2/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:21 pm
SAN
-
OPO
2 stops16h 39m
Iberia
Tue 4/288:40 pm
OPO
-
SAN
2 stops35h 16m
Iberia
Deal found 2/17$512

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 February 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$485
(KLM)

One-way from

$297
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$605
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. 20% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 21, 2026.
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 4/21

1:40 pm-6:20 pm

1 stop20h 40m

Porto

Tue 4/28

5:00 am-11:50 am

1 stop14h 50m

$485

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 8/18

1:35 pm-5:50 pm

2 stops20h 15m

Lisbon Humberto Delgado

Tue 8/25

5:00 am-11:50 am

1 stop14h 50m

$553

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Thu 4/9

10:40 am-5:50 pm

2 stops23h 10m

Lisbon Humberto Delgado

Mon 4/20

5:00 am-6:59 pm

2 stops21h 59m

$577

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 4/21

7:40 pm-9:20 am

3 stops29h 40m

Lisbon Humberto Delgado

Tue 4/28

7:25 am-10:59 pm

2 stops23h 34m

$583

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Sun 3/15

10:30 pm-10:15 am

2 stops28h 45m

Lisbon Humberto Delgado

Tue 3/24

10:15 am-9:23 pm

1 stop18h 08m

$596

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 8/11

9:55 pm-10:30 am

1 stop28h 35m

Lisbon Humberto Delgado

Mon 8/31

12:20 pm-10:28 pm

2 stops18h 08m

$598

San DiegoLisbon

SAN - LIS

SANLIS

San Diego

Tue 8/11

10:00 am-2:55 pm

2 stops20h 55m

Lisbon Humberto Delgado

Mon 8/31

5:35 am-6:54 pm

2 stops21h 19m

$630

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 4/5

9:55 pm-5:55 pm

2 stops36h 00m

Porto

Wed 4/15

7:10 pm-11:50 am

1 stop24h 40m

$649

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 4/19

10:05 am-10:00 pm

2 stops27h 55m

Porto

Wed 4/29

11:45 am-11:50 am

1 stop32h 05m

$661

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 4/2

1:40 pm-10:40 am

1 stop37h 00m

Porto

Wed 4/15

11:45 am-11:50 am

1 stop32h 05m

$665

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

Showing 1-10 of 52 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 $711). 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.

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 February 21, 2026.
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
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
8,232 reviews
Delta
7.9
Good
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
9,336 reviews
Delta
7.9
Good
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
10,735 reviews
Delta
7.9
Good
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
7,794 reviews
Delta
7.9
Good
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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
7,756 reviews
Delta
7.9
Good
8,232 reviews

Comfort

7.9

Boarding

8.1

Overall

7.9

Food

7.2

Entertainment

7.8

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, Finnair, and British Airways 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 6h 52m. 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 KLM, which is currently one of the cheapest options available, starting at $245. Air Canada flights start at $359 while deals on United Airlines start at $408 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 - Ponta Delgada Nordela 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 $711). 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 8 airlines flying from San Diego to Portugal

Discover the top 8 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 February 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$489Average$890FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$490Average$750FlexibilityNo cancel feeOn-time75%
IberiaCheapest$506Average$983FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$532Average$945FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$534Average$792FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$541Average$1,007FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$555Average$1,146FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$590Average$971FlexibilityNo cancel feeOn-time67%

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