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$654+ Cheap flights from Portugal to Oakland, CA (OAK)

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — OAK
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
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Cheap flight deals from Portugal to Oakland

Keep the following information in mind while searching for Portugal to Oakland flight deals. Data was last updated abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Popular in

July

Cheapest in

February

Average price

$771
Provider with most accurate pricing for Lisbon Humberto Delgado-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-San Francisco flights.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($135 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 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 Portugal to Oakland

One-way flights from Portugal to Oakland
Search for one-way flight options from Portugal to Oakland. Find affordable one-way fares based on user searches. Data last updated abril 29, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/3110:25 pmOPO - OAK
3 stops42h 46mMultiple Airlines
Deal found 4/28$654
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/315:00 amOPO - OAK
2 stops25h 43mDelta
Deal found 4/28$772
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/110:25 pmLIS - OAK
2 stops31h 46mIcelandair
Deal found 4/28$848
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/1110:00 amLIS - OAK
2 stops21h 43mDelta
Deal found 4/28$944
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/94:35 pmLIS - OAK
2 stops39h 09mFinnair
Deal found 4/28$3,918

Cheapflights Fare Finder

Customize your flight search to find flights from Portugal to Oakland 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 abril 29, 2025.
Use the filters below to find and compare flights from Portugal to Oakland that are best for you.

Fly from

Portugal

Fly to

Oakland

Route

Depart

Return

Price

PortoOakland

OPO - OAK

OPOOAK

Porto

dom. 8/31

10:25 pm-9:11 am

3 stops42h 46m

$654

PortoOakland

OPO - OAK

OPOOAK

Porto

dom. 8/31

5:00 am-10:43 pm

2 stops25h 43m

$772

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

dom. 6/1

10:25 pm-10:11 pm

2 stops31h 46m

$848

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

lun. 8/11

10:00 am-11:43 pm

2 stops21h 43m

$944

LisbonOakland

LIS - OAK

LISOAK

Lisbon Humberto Delgado

vie. 5/9

4:35 pm-11:44 pm

2 stops39h 09m

$3,918

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Best time to book a flight from Portugal to Oakland

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

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

Currently, April is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $183). Flying from Portugal to Oakland, California in November is currently the most expensive (average of $259). 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.

Rainfall in Oakland by month

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

In terms of precipitation, rainfall in Oakland, California ranges from 0.0 - 4.8 inches per month. January is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Oakland, California when rainfall is around 0.0 in.

Temperature in Oakland by month

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

If weather is an important factor for your trip to Oakland, California, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Oakland

Get insights into the airlines that provide service to Oakland. 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 Oakland. Reviews last updated abril 29, 2025.
Delta
8.0
Very good
7,929 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Icelandair
7.0
Good
487 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portugal to Oakland. 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 into for flights to Oakland from Portugal?

    Oakland (OAK) is the airport you will fly into if you book a flight from Portugal to Oakland. It is only a 7.0 mi journey from Oakland (OAK) to Oakland’s city center.

  • What are the cheapest airlines to fly from Portugal to Oakland, California one-way?

    One-way options have recently been found by users for as low as $772 on Delta. Other airlines that offer cheap prices include Icelandair from $848 and Finnair from $3,918 one-way.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Portugal to Oakland, California (average of $183). Flying from Portugal to Oakland, California in November is currently the most expensive (average of $259). 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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