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Portugal

$260+ 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — LIS
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap 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 diciembre 12, 2025.

This British Airways deal was found by Cheapflights users on 12/11. 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.
mié. 12/243:01 pmOAK - LIS
2 stops22h 49mBritish Airways
mar. 12/3012:55 pmLIS - OAK
2 stops38h 57mBritish Airways
Deal found 12/11$1,210
This British Airways deal was found by Cheapflights users on 12/11. 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.
jue. 12/253:01 pmOAK - LIS
2 stops47h 24mBritish Airways
mar. 12/3012:55 pmLIS - OAK
2 stops38h 57mBritish Airways
Deal found 12/11$1,268
This British Airways deal was found by Cheapflights users on 12/11. 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.
mié. 12/243:01 pmOAK - LIS
2 stops22h 49mBritish Airways
mié. 1/76:35 pmLIS - OAK
2 stops34h 05mBritish Airways
Deal found 12/11$1,490
This British Airways deal was found by Cheapflights users on 12/11. 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.
mié. 12/243:01 pmOAK - LIS
2 stops34h 54mBritish Airways
lun. 12/297:05 amLIS - OAK
2 stops20h 47mBritish Airways
Deal found 12/11$1,551
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/255:53 amOAK - LIS
2 stops42h 07mDelta
mar. 1/612:20 pmLIS - OAK
2 stops55h 37mDelta
Deal found 12/10$1,603
This British Airways deal was found by Cheapflights users on 12/11. 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.
jue. 12/253:01 pmOAK - LIS
2 stops47h 24mBritish Airways
lun. 12/297:05 amLIS - OAK
2 stops20h 47mBritish Airways
Deal found 12/11$1,609
This British Airways deal was found by Cheapflights users on 12/10. 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.
mié. 12/313:01 pmOAK - LIS
2 stops18h 39mBritish Airways
vie. 1/97:05 amLIS - OAK
2 stops21h 35mBritish Airways
Deal found 12/10$1,615
This oojo deal was found by Cheapflights users on 12/10. 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.
mar. 12/166:40 amOAK - LIS
2 stops24h 05mBritish Airways
mié. 1/76:35 pmLIS - OAK
2 stops34h 05mBritish Airways
Deal found 12/10$1,706
This Delta deal was found by Cheapflights users on 12/11. 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.
jue. 12/255:53 amOAK - LIS
2 stops42h 07mDelta
mié. 12/315:30 amLIS - OAK
2 stops25h 17mDelta
Deal found 12/11$1,722
This British Airways deal was found by Cheapflights users on 12/11. 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.
mié. 12/243:01 pmOAK - LIS
2 stops22h 49mBritish Airways
mié. 12/3110:40 amLIS - OAK
2 stops21h 19mBritish Airways
Deal found 12/11$1,748
This Delta deal was found by Cheapflights users on 12/11. 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.
vie. 12/265:53 amOAK - LIS
2 stops18h 07mDelta
mar. 12/3011:25 amLIS - OAK
2 stops43h 22mDelta
Deal found 12/11$1,886
This Delta deal was found by Cheapflights users on 12/10. 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.
mié. 12/245:53 amOAK - LIS
2 stops44h 42mDelta
mié. 12/315:30 amLIS - OAK
2 stops25h 17mDelta
Deal found 12/10$1,922

Find flight deals from Oakland to Portugal

Keep the following information in mind while searching for Oakland to Portugal flight deals. Data was last updated diciembre 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$504
(Delta)

One-way from

$260
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$962
Provider with most accurate pricing for San Francisco-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Lisbon Humberto Delgado flights.
Search Deals
From Oakland to Portugal
Search Deals
One-way flight from Oakland to Portugal
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 12, 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

mar. 1/20

5:55 am-11:20 am

2 stops21h 25m

Lisbon Humberto Delgado

lun. 2/2

11:25 am-4:14 pm

2 stops36h 49m

$504

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

mar. 1/20

5:55 am-11:20 am

2 stops21h 25m

Lisbon Humberto Delgado

mar. 2/3

11:25 am-4:14 pm

2 stops36h 49m

$504

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

lun. 1/19

12:38 pm-3:10 pm

2 stops42h 32m

Lisbon Humberto Delgado

lun. 2/2

11:25 am-11:53 pm

2 stops44h 28m

$509

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

mar. 1/20

5:55 am-11:20 am

2 stops21h 25m

Lisbon Humberto Delgado

mié. 2/4

5:30 am-4:14 pm

2 stops18h 44m

$510

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

lun. 1/19

12:38 pm-3:10 pm

2 stops42h 32m

Lisbon Humberto Delgado

mié. 2/4

5:30 am-4:14 pm

2 stops18h 44m

$515

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

mar. 1/20

5:55 am-11:20 am

2 stops21h 25m

Lisbon Humberto Delgado

jue. 1/29

10:00 am-11:53 pm

2 stops21h 53m

$518

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

mar. 1/20

5:55 am-11:20 am

2 stops21h 25m

Lisbon Humberto Delgado

dom. 2/1

11:25 am-4:14 pm

2 stops36h 49m

$527

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

dom. 1/25

5:55 am-3:10 pm

2 stops25h 15m

Lisbon Humberto Delgado

dom. 2/1

11:25 am-11:53 pm

2 stops44h 28m

$527

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

lun. 1/19

12:38 pm-3:10 pm

2 stops42h 32m

Lisbon Humberto Delgado

dom. 2/1

11:25 am-4:14 pm

2 stops36h 49m

$532

OaklandLisbon

OAK - LIS

OAKLIS

Oakland

vie. 1/23

4:54 pm-3:10 pm

2 stops38h 16m

Lisbon Humberto Delgado

mié. 2/4

5:30 am-4:14 pm

2 stops18h 44m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 34 results
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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, November is the cheapest month in which you can book a flight from Oakland, California to Portugal (average of $488). Flying from Oakland, California to Portugal in June is currently the most expensive (average of $782). 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 diciembre 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 13% on flights from Oakland, California to Portugal by exploring options for tickets in the evening.

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.

  • How long is the flight from Oakland, California to Portugal?

    For as low as $504, Delta can have you in Portugal from Oakland, California in 21h 25m. Oakland, California and Portugal are separated by a distance of 5653 mi.

  • 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 - Funchal Madeira.

  • 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, November is the cheapest month in which you can book a flight from Oakland, California to Portugal (average of $488). Flying from Oakland, California to Portugal in June is currently the most expensive (average of $782). 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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