HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto

$899+ Cheap flights from Oakland, CA (OAK) to Porto (OPO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — OPO
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oakland 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 Oakland to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Oakland (OAK) 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$899
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$761
Provider with most accurate pricing for Oakland-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Oakland-Porto flights.
Search Deals
From Oakland to Porto
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($258 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Oakland to Porto

Cheapest flights from Oakland to Porto
Explore the most affordable flight options available from Oakland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/125:45 amOAK - OPO
3 stops31h 50mMultiple Airlines
Mon 5/199:15 pmOPO - OAK
3 stops33h 10mMultiple Airlines
Deal found 3/28$899
This Delta deal was found by Cheapflights users on 3/27. 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 4/286:00 amOAK - OPO
2 stops25h 30mDelta
Tue 6/311:25 amOPO - OAK
2 stops20h 24mDelta
Deal found 3/27$1,011
This KLM deal was found by Cheapflights users on 3/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/126:00 amOAK - OPO
2 stops25h 35mKLM
Mon 5/195:30 pmOPO - OAK
2 stops30h 45mKLM
Deal found 3/28$1,145
This British Airways deal was found by Cheapflights users on 3/27. 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.
Sat 5/34:43 pmOAK - OPO
2 stops43h 37mBritish Airways
Tue 6/38:40 pmOPO - OAK
2 stops33h 31mBritish Airways
Deal found 3/27$1,283

Cheapflights Fare Finder

Customize your flight search to find flights from Oakland 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 March 28, 2025.
Use the filters below to find and compare flights from Oakland to Porto that are best for you.

Fly from

Oakland

Fly to

Porto

Route

Depart

Return

Price

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 5/12

5:45 am-9:35 pm

3 stops31h 50m

Porto

Mon 5/19

9:15 pm-10:25 pm

3 stops33h 10m

$899

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 4/28

6:00 am-3:30 pm

2 stops25h 30m

Porto

Tue 6/3

11:25 am-11:49 pm

2 stops20h 24m

$1,011

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 5/12

6:00 am-3:35 pm

2 stops25h 35m

Porto

Mon 5/19

5:30 pm-4:15 pm

2 stops30h 45m

$1,145

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 5/3

4:43 pm-8:20 pm

2 stops43h 37m

Porto

Tue 6/3

8:40 pm-10:11 pm

2 stops33h 31m

$1,283

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Compare providers for flights from Oakland 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 Oakland to Porto in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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 Oakland, California-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Oakland, California-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Oakland, California-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Oakland, California-Porto flights, Cheapflights users trust FlightHub the most. FlightHub 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 Oakland, California-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 Oakland to Porto

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

What is the cheapest month to book a flight from Oakland, California to Porto?

Currently, January is the cheapest month in which you can book a flight from Oakland, California to Porto (average of $523). Flying from Oakland, California to Porto in June is currently the most expensive (average of $1,084). 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 OAK to OPO?

Find hourly flight availability from Oakland 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 March 28, 2025.

When flying from Oakland, California to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 March 28, 2025.
Delta
8.0
Very good
7,896 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
1,321 reviews
Delta
8.0
Very good
7,896 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
6.6
Okay
6,712 reviews
Delta
8.0
Very good
7,896 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

8.0

Overall

8.0

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

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

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

  • How can I find direct flights from Oakland to Porto?

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

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

    Yes. Cheapflights offers flight deals from Oakland 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 Oakland, California to Porto?

    Currently, January is the cheapest month in which you can book a flight from Oakland, California to Porto (average of $523). Flying from Oakland, California to Porto in June is currently the most expensive (average of $1,084). 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 Oakland?

Book flights to Oakland if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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 Oakland to Porto

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Lisbon flights
San Francisco to Lisbon flights
Los Angeles to Porto flights
San Diego to Lisbon flights
San Francisco to Porto flights
Las Vegas to Lisbon flights
Ontario to Lisbon flights
Ontario to Porto flights
San Francisco to Lajes flights
Oakland to Lisbon flights
Sacramento to Lisbon flights
Los Angeles to Faro flights
San Jose to Lisbon flights
San Francisco to Faro flights
Santa Ana to Lisbon flights
Los Angeles to Funchal flights
Santa Rosa to Lisbon flights
San Francisco to Ponta Delgada flights
Santa Ana to Porto flights
Sacramento to Porto flights
San Diego to Porto flights
Burbank to Lisbon flights
Los Angeles to Ponta Delgada flights
Burbank to Porto flights
San Francisco to Funchal flights
Ontario to Faro flights
Palm Springs to Lisbon flights
Reno to Lisbon flights
Fresno to Lisbon flights
San Francisco to Pico Island flights
San Francisco to Horta flights
San Francisco to Velas flights
San Diego to Ponta Delgada flights
Las Vegas to Funchal flights
Ontario to Ponta Delgada flights
San Jose to Faro flights
San Jose to Funchal flights
San Diego to Faro flights
Los Angeles to Lajes flights
Santa Barbara to Lisbon flights
San Jose to Porto flights
Santa Ana to Faro flights
San Jose to Ponta Delgada flights
Long Beach to Lisbon flights
San Francisco to Vila do Porto flights
Monterey to Lisbon flights
San Francisco to Porto Santo flights
Burbank to Faro flights
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.