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$495+ Cheap flights from San Diego (SAN) to Porto (OPO)

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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — OPO
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from San Diego to Porto

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$755
(American Airlines)

One-way from

$495
(Gurufare)

Popular in

June

Cheapest in

February

Average price

$1,181
Provider with most accurate pricing for San Diego-Porto flight deals.
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Provider most trusted by Cheapflights users for San Diego-Porto flights.
Search Deals
From San Diego to Porto
Search Deals
One-way flight from San Diego to Porto
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($235 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from San Diego to Porto

Cheapest flights from San Diego to Porto
Explore the most affordable flight options available from San Diego to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/288:40 amSAN - OPO
2 stops20h 05mIberia
Tue 11/118:40 pmOPO - SAN
2 stops31h 27mIberia
Deal found 4/29$577
This KLM deal was found by Cheapflights users on 4/29. 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 10/288:50 amSAN - OPO
2 stops19h 00mKLM
Tue 11/115:00 amOPO - SAN
1 stop15h 05mKLM
Deal found 4/29$649
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/232:54 pmSAN - OPO
2 stops17h 01mAmerican Airlines
Wed 10/112:20 pmOPO - SAN
2 stops19h 12mAmerican Airlines
Deal found 4/29$755
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Tue 9/2310:30 pmSAN - OPO
2 stops26h 50mMultiple Airlines
Wed 10/16:15 amOPO - SAN
1 stop17h 10mMultiple Airlines
Deal found 4/29$799
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:15 pmSAN - OPO
1 stop22h 05mLufthansa
Wed 10/16:15 amOPO - SAN
1 stop17h 10mLufthansa
Deal found 4/29$815
This Air Canada deal was found by Cheapflights users on 4/28. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/204:55 pmSAN - OPO
2 stops56h 40mAir Canada
Sat 10/46:00 amOPO - SAN
2 stops37h 41mAir Canada
Deal found 4/28$850
This United Airlines deal was found by Cheapflights users on 4/29. 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 7/217:27 pmSAN - OPO
3 stops28h 18mUnited Airlines
Wed 7/306:00 amOPO - SAN
2 stops23h 22mUnited Airlines
Deal found 4/29$976
This Delta deal was found by Cheapflights users on 4/29. 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 6/121:00 pmSAN - OPO
2 stops18h 30mDelta
Mon 6/236:30 amOPO - SAN
2 stops20h 24mDelta
Deal found 4/29$1,289
This AranGrant deal was found by Cheapflights users on 4/29. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:50 pmSAN - OPO
1 stop16h 30mBritish Airways
Mon 6/911:45 amOPO - SAN
1 stop35h 05mBritish Airways
Deal found 4/29$3,537

Cheapflights Fare Finder

Customize your flight search to find flights from San Diego to Porto 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 April 30, 2025.
Use the filters below to find and compare flights from San Diego to Porto that are best for you.

Fly from

San Diego

Fly to

Porto

Route

Depart

Return

Price

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/23

2:54 pm-3:55 pm

2 stops17h 01m

Porto

Wed 10/1

12:20 pm-11:32 pm

2 stops19h 12m

$755

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/23

10:30 pm-9:20 am

2 stops26h 50m

Porto

Wed 10/1

6:15 am-3:25 pm

1 stop17h 10m

$799

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Tue 9/23

5:15 pm-11:20 pm

1 stop22h 05m

Porto

Wed 10/1

6:15 am-3:25 pm

1 stop17h 10m

$815

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sat 9/20

4:55 pm-9:35 am

2 stops56h 40m

Porto

Sat 10/4

6:00 am-11:41 am

2 stops37h 41m

$850

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 7/21

7:27 pm-7:45 am

3 stops28h 18m

Porto

Wed 7/30

6:00 am-9:22 pm

2 stops23h 22m

$976

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 6/12

1:00 pm-3:30 pm

2 stops18h 30m

Porto

Mon 6/23

6:30 am-6:54 pm

2 stops20h 24m

$1,289

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 6/12

1:55 pm-7:40 pm

1 stop21h 45m

Porto

Mon 6/23

6:25 pm-12:00 pm

1 stop25h 35m

$1,335

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Thu 5/29

7:50 pm-8:20 pm

1 stop16h 30m

Porto

Mon 6/9

11:45 am-2:50 pm

1 stop35h 05m

$3,537

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Sun 5/25

2:27 pm-3:55 pm

2 stops17h 28m

Porto

Thu 6/5

12:20 pm-10:57 pm

2 stops18h 37m

$4,853

San DiegoPorto

SAN - OPO

SANOPO

San Diego

Mon 9/22

10:00 am-11:00 am

2 stops41h 00m

$495

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 13 results
1
2

Compare providers for flights from San Diego to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Diego-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from San Diego-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

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

Currently, January is the cheapest month in which you can book a flight from San Diego to Porto (average of $523). Flying from San Diego to Porto in June is currently the most expensive (average of $1,071). 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 OPO?

Find hourly flight availability from San Diego to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

It’s optimal to fly from San Diego to Porto in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the morning.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated April 30, 2025.
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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.
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from San Diego to Porto round-trip?

    Flying on American Airlines is currently your cheapest option to Porto, with prices starting at $755. Additional round-trip tickets that might be worth considering are offered by Lufthansa and Air Canada, with the lowest prices starting at $815 and $850, respectively. You may be able to fly from San Diego to Porto for 29% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as $495. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from San Diego to Porto for a low price.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Diego to Porto (average of $523). Flying from San Diego to Porto in June is currently the most expensive (average of $1,071). 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
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Top 4 airlines flying from San Diego to Porto

Discover the top 4 airlines that operate flights from San Diego to Porto. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$547Average$1,044FlexibilityNo cancel feeOn-time76%
KLMCheapest$732Average$888FlexibilityNo cancel feeOn-time75%
DeltaCheapest$753Average$1,038FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$794Average$1,218FlexibilityNo cancel feeOn-time69%

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