$381+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — OPO
Apr 22 — Apr 291
1 adult, Economy
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Find cheap flights from San Diego to Porto 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 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 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 | June |
Cheapest in | February |
Average price | $1,181 |
Find flight deals from San Diego to Porto
Cheapest flights from San Diego to PortoExplore 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 17, 2025.
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 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.
Tue 10/288:50 amSAN - OPO
2 stops19h 00mKLM
Tue 11/115:00 amOPO - SAN
1 stop15h 05mKLM
Deal found 4/16![KLM logo]()
$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.
Tue 10/285:15 pmSAN - OPO
2 stops18h 25mSWISS
Tue 11/117:30 pmOPO - SAN
2 stops32h 46mSWISS
Deal found 4/16![SWISS logo]()
$656
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.
Tue 9/2310:30 pmSAN - OPO
2 stops26h 55mMultiple Airlines
Wed 10/18:40 amOPO - SAN
2 stops21h 34mMultiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$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.
Tue 10/2110:15 amSAN - OPO
2 stops15h 30mUnited Airlines
Tue 10/2812:35 pmOPO - SAN
2 stops28h 36mUnited Airlines
Deal found 4/16![United Airlines logo]()
$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.
Mon 4/288:00 amSAN - OPO
2 stops23h 30mDelta
Tue 5/136:20 amOPO - SAN
2 stops22h 17mDelta
Deal found 4/16![Delta logo]()
$729
This Air Canada 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:55 pmSAN - OPO
2 stops32h 30mAir Canada
Wed 10/18:40 amOPO - SAN
2 stops35h 12mAir Canada
Deal found 4/16![Air Canada logo]()
$792
This Gurufare 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 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 4/16![Lufthansa logo]()
$815
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/72:51 pmSAN - OPO
2 stops21h 04mIberia
Thu 8/1412:20 pmOPO - SAN
2 stops19h 03mIberia
Deal found 4/15![Iberia logo]()
$1,184
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2111:02 amSAN - OPO
2 stops39h 58mScandinavian Airlines
Wed 4/3012:15 pmOPO - SAN
2 stops42h 34mScandinavian Airlines
Deal found 4/16![Scandinavian Airlines logo]()
$1,438
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/310:50 amSAN - OPO
1 stop15h 45mTAP AIR PORTUGAL
Sat 8/1610:00 amOPO - SAN
2 stops19h 22mTAP AIR PORTUGAL
Deal found 4/15![TAP AIR PORTUGAL logo]()
$2,198
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:35 pmSAN - OPO
2 stops18h 40mAir Europa
Sun 8/1711:35 amOPO - SAN
2 stops20h 42mAir Europa
Deal found 4/15![Air Europa logo]()
$2,460
This AranGrant 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1610:39 pmSAN - OPO
2 stops37h 56mBritish Airways
Tue 5/278:40 pmOPO - SAN
1 stop26h 10mBritish Airways
Deal found 4/16![British Airways logo]()
$3,788
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 17, 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
10:30 pm-9:25 am
2 stops26h 55m
Porto
Wed 10/1
8:40 am-10:14 pm
2 stops21h 34m
$706
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Tue 9/23
1:55 pm-10:15 pm
1 stop24h 20m
Porto
Wed 10/1
4:20 pm-12:00 pm
1 stop27h 40m
$720
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Mon 4/28
8:00 am-3:30 pm
2 stops23h 30m
Porto
Tue 5/13
6:20 am-8:37 pm
2 stops22h 17m
$729
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Tue 9/23
4:55 pm-9:25 am
2 stops32h 30m
Porto
Wed 10/1
8:40 am-11:52 am
2 stops35h 12m
$792
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
Mon 8/4
8:10 am-9:35 am
1 stop17h 25m
Porto
Thu 8/14
12:35 pm-9:22 pm
1 stop16h 47m
$907
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Thu 8/7
2:51 pm-7:55 pm
2 stops21h 04m
Porto
Thu 8/14
12:20 pm-11:23 pm
2 stops19h 03m
$1,184
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Sat 5/24
10:46 am-6:15 pm
2 stops47h 29m
Porto
Sun 6/1
12:25 pm-8:36 pm
2 stops40h 11m
$1,226
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Sun 8/3
10:50 am-10:35 am
1 stop15h 45m
Porto
Sat 8/16
10:00 am-9:22 pm
2 stops19h 22m
$2,198
San DiegoPorto
SAN - OPO
SANOPO
San Diego
Mon 8/4
12:35 pm-3:15 pm
2 stops18h 40m
Porto
Sun 8/17
11:35 am-12:17 am
2 stops20h 42m
$2,460
Showing 1-10 of 17 results
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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 $1,081). 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 17, 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 17, 2025.
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Overall
8.0
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsAveiro
Coimbra
Matosinhos
Arcos de Valdevez
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Alternative routes for San Diego to Porto
See prices for flight routes from nearby airports that may be better suited for you.
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 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$547 | Average$1,057 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$732 | Average$888 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$739 | Average$1,218 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$753 | Average$1,038 | FlexibilityNo cancel fee | On-timeN/A |