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$477+ Cheap flights from Oakland, CA (OAK) 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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — LIS
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Oakland to Portugal

Keep the following information in mind while searching for Oakland to Portugal flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$622
(Delta)

One-way from

$482
(KLM)

Popular in

June

Cheapest in

February

Average price

$973
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
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From Oakland to Portugal
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One-way flight from Oakland to Portugal
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Highest demand for flights based on searches. 16% potential increase in price ($173 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Oakland to Portugal

Cheapest flights from Oakland to Portugal
Explore the most affordable flight options available from Oakland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 10/215:55 amOAK - LIS
2 stops20h 50mDelta
Thu 11/2011:15 amLIS - OAK
2 stops20h 38mDelta
Deal found 4/30$622
This Air France deal was found by Cheapflights users on 4/30. 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 5/56:00 amOAK - LIS
2 stops24h 50mMultiple Airlines
Sun 5/117:30 pmLIS - OAK
2 stops28h 45mMultiple Airlines
Deal found 4/30$799
This British Airways deal was found by Cheapflights users on 4/30. 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.
Thu 10/1610:10 amOAK - LIS
2 stops21h 15mBritish Airways
Sun 11/236:40 pmLIS - OAK
2 stops36h 58mBritish Airways
Deal found 4/30$924
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.
Thu 5/296:00 amOAK - LIS
2 stops20h 45mKLM
Thu 6/57:30 pmLIS - OAK
2 stops36h 19mKLM
Deal found 4/29$1,058
This Delta deal was found by Cheapflights users on 5/1. 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.
Sun 7/136:00 amOAK - OPO
2 stops25h 30mDelta
Tue 7/229:20 amOPO - OAK
2 stops58h 25mDelta
Deal found 5/1$1,145
This Mytrip deal was found by Cheapflights users on 4/30. 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.
Sat 6/146:00 amOAK - OPO
3 stops32h 10mMultiple Airlines
Sat 6/219:00 amOPO - OAK
3 stops46h 26mMultiple Airlines
Deal found 4/30$1,188
This KLM deal was found by Cheapflights users on 5/1. 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 7/146:00 amOAK - OPO
2 stops25h 30mKLM
Tue 7/226:35 amOPO - OAK
2 stops17h 39mKLM
Deal found 5/1$1,270
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/82:38 pmOAK - FAO
2 stops20h 32mBritish Airways
Tue 7/153:35 pmFAO - OAK
2 stops38h 31mBritish Airways
Deal found 4/29$1,398
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/219:28 amOAK - PDL
2 stops42h 37mBritish Airways
Wed 8/1312:10 pmPDL - OAK
2 stops40h 56mBritish Airways
Deal found 4/29$2,326
This Travelocity 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/242:38 pmOAK - PDL
2 stops41h 52mMultiple Airlines
Sun 8/101:30 pmPDL - OAK
2 stops41h 29mMultiple Airlines
Deal found 4/29$2,674

Cheapflights Fare Finder

Customize your flight search to find flights from Oakland 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 May 1, 2025.
Use the filters below to find and compare flights from Oakland to Portugal that are best for you.

Fly from

Oakland

Fly to

Portugal

Route

Depart

Return

Price

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

Tue 10/21

5:55 am-10:45 am

2 stops20h 50m

Lisbon Humberto Delgado

Thu 11/20

11:15 am-11:53 pm

2 stops20h 38m

$622

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

Thu 10/16

10:10 am-3:25 pm

2 stops21h 15m

Lisbon Humberto Delgado

Sun 11/23

6:40 pm-11:38 pm

2 stops36h 58m

$924

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

Thu 5/29

6:00 am-10:45 am

2 stops20h 45m

Lisbon Humberto Delgado

Thu 6/5

5:40 am-4:15 pm

2 stops18h 35m

$1,024

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

Thu 5/29

6:00 am-10:45 am

2 stops20h 45m

Lisbon Humberto Delgado

Thu 6/5

7:30 pm-11:49 pm

2 stops36h 19m

$1,058

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sun 7/13

6:00 am-3:30 pm

2 stops25h 30m

Porto

Tue 7/22

9:20 am-11:45 am

2 stops58h 25m

$1,145

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Sat 6/14

6:00 am-10:10 pm

3 stops32h 10m

Porto

Sat 6/21

9:00 am-11:26 pm

3 stops46h 26m

$1,188

OaklandPorto

OAK - OPO

OAKOPO

Oakland

Mon 7/14

6:00 am-3:30 pm

2 stops25h 30m

Porto

Tue 7/22

6:35 am-4:14 pm

2 stops17h 39m

$1,270

OaklandFaro

OAK - FAO

OAKFAO

Oakland

Tue 7/8

2:38 pm-7:10 pm

2 stops20h 32m

Faro

Tue 7/15

3:35 pm-10:06 pm

2 stops38h 31m

$1,398

OaklandPonta Delgada

OAK - PDL

OAKPDL

Oakland

Mon 7/21

9:28 am-11:05 am

2 stops42h 37m

Ponta Delgada Nordela

Wed 8/13

12:10 pm-10:06 pm

2 stops40h 56m

$2,326

OaklandPonta Delgada

OAK - PDL

OAKPDL

Oakland

Thu 7/24

2:38 pm-3:30 pm

2 stops41h 52m

Ponta Delgada Nordela

Sun 8/10

1:30 pm-11:59 pm

2 stops41h 29m

$2,674

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

Showing 1-10 of 18 results
1
2

Best time to book a flight from Oakland to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Oakland, California to Portugal (average of $612). Flying from Oakland, California to Portugal in June is currently the most expensive (average of $1,178). 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 PT?

Find hourly flight availability from Oakland to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oakland, California to Portugal as you normally would.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 73.4 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 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 May 1, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Oakland to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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 France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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.
Icelandair
7.0
Good
487 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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 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 Oakland to Portugal?

    If you book a flight to Portugal from Oakland, you will be flying from Oakland, which is the city’s only airport. Oakland (OAK) is located 7.0 mi from the center of Oakland.

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

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as $482. However, be on the lookout for offers from Air France and Delta, as they are both options that can get you from Oakland, California to Portugal for a low price.

  • What are the most popular routes from Oakland, California to Portugal?

    The most popular flight routes from Oakland, California to Portugal are Oakland - Lisbon Humberto Delgado, Oakland - Porto and Oakland - Vila do Porto Santa Maria.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Oakland, California to Portugal (average of $612). Flying from Oakland, California to Portugal in June is currently the most expensive (average of $1,178). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Oakland to Portugal

Discover the top 2 airlines that operate flights from Oakland 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$960Average$1,310FlexibilityNo cancel feeOn-timeN/A
Azores AirlinesCheapest$1,250Average$1,379FlexibilityNo cancel feeOn-time74%

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