HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$316+ Cheap flights from Fremont, CA 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Fremont to Portugal 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 Fremont to Portugal

Keep the following information in mind while searching for Fremont to Portugal flight deals. Data was last updated April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$625
(SWISS)

One-way from

$316
(Iberia)

Popular in

June

Cheapest in

February

Average price

$805
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 Fremont to Portugal
Search Deals
One-way flight from Fremont to Portugal
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Fremont to Portugal

Cheapest flights from Fremont to Portugal
Explore the most affordable flight options available from Fremont to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:40 pmSFO - FAO
2 stops33h 05mScandinavian Airlines
Wed 12/1010:35 amFAO - SFO
2 stops36h 00mScandinavian Airlines
Deal found 4/16$508
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.
Mon 10/69:00 amSFO - LIS
1 stop15h 00mMultiple Airlines
Mon 10/1311:40 amLIS - SFO
1 stop32h 05mMultiple Airlines
Deal found 4/16$567
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/204:20 pmSFO - LIS
Nonstop11h 10mTAP AIR PORTUGAL
Wed 9/39:55 amLIS - SFO
Nonstop12h 40mTAP AIR PORTUGAL
Deal found 4/16$579
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.
Wed 8/207:10 amSFO - LIS
2 stops18h 10mAir Canada
Wed 9/311:25 amLIS - SFO
2 stops19h 34mAir Canada
Deal found 4/16$600
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/28:10 pmSFO - LIS
1 stop16h 25mIberia
Sat 9/139:10 amLIS - SFO
1 stop17h 00mIberia
Deal found 4/16$624
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/611:35 amSFO - LIS
2 stops27h 45mSWISS
Fri 5/165:55 amLIS - SFO
1 stop18h 15mSWISS
Deal found 4/15$625
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 8/187:00 amSFO - LIS
1 stop19h 45mDelta
Mon 8/255:40 amLIS - SFO
1 stop15h 10mDelta
Deal found 4/16$626
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/112:20 amSFO - LIS
1 stop26h 15mUnited Airlines
Wed 8/2011:25 amLIS - SFO
1 stop31h 50mUnited Airlines
Deal found 4/15$630
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/43:52 pmSFO - LIS
2 stops23h 38mLufthansa
Fri 5/166:15 amLIS - SFO
1 stop20h 45mLufthansa
Deal found 4/15$634
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:40 pmSFO - LIS
2 stops21h 30mScandinavian Airlines
Wed 11/197:05 amLIS - SFO
2 stops24h 15mScandinavian Airlines
Deal found 4/16$647
This Gurufare deal was found by Cheapflights users on 4/17. 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.
Wed 10/296:30 pmSFO - LIS
1 stop16h 15mBritish Airways
Thu 11/2010:40 amLIS - SFO
1 stop16h 05mBritish Airways
Deal found 4/17$657
This Finnair deal was found by Cheapflights users on 4/17. 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.
Sat 10/184:35 pmSFO - LIS
1 stop22h 35mFinnair
Mon 11/34:10 pmLIS - SFO
2 stops34h 19mFinnair
Deal found 4/17$662

Cheapflights Fare Finder

Customize your flight search to find flights from Fremont 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 April 17, 2025.
Use the filters below to find and compare flights from Fremont to Portugal that are best for you.

Fly from

Fremont

Fly to

Portugal

Route

Depart

Return

Price

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Tue 5/6

11:35 am-11:20 pm

2 stops27h 45m

Lisbon Humberto Delgado

Fri 5/16

5:55 am-4:10 pm

1 stop18h 15m

$625

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 5/4

3:52 pm-11:30 pm

2 stops23h 38m

Lisbon Humberto Delgado

Fri 5/16

6:15 am-7:00 pm

1 stop20h 45m

$634

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 4/28

3:05 pm-2:50 pm

1 stop15h 45m

Lisbon Humberto Delgado

Sun 5/4

5:40 am-12:50 pm

1 stop15h 10m

$640

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 5/5

8:45 pm-10:25 pm

1 stop17h 40m

Lisbon Humberto Delgado

Sat 5/17

5:00 am-11:45 am

1 stop14h 45m

$641

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 5/11

4:20 pm-11:05 pm

1 stop22h 45m

Lisbon Humberto Delgado

Sun 5/18

5:10 pm-1:50 pm

1 stop28h 40m

$664

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

Wed 5/14

4:20 pm-7:05 pm

1 stop18h 45m

Faro

Wed 5/21

8:00 pm-5:15 pm

1 stop29h 15m

$669

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 4/28

6:30 am-10:30 am

1 stop20h 00m

Lisbon Humberto Delgado

Tue 5/6

11:25 am-2:09 pm

2 stops34h 44m

$693

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Tue 5/6

5:45 pm-6:25 pm

1 stop16h 40m

Lisbon Humberto Delgado

Thu 5/15

6:35 am-4:10 pm

1 stop17h 35m

$698

San FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

Wed 5/14

11:26 am-7:05 pm

2 stops23h 39m

Faro

Wed 5/21

8:00 pm-5:15 pm

1 stop29h 15m

$698

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 5/7

8:35 am-11:05 am

1 stop18h 30m

Lisbon Humberto Delgado

Wed 5/21

5:05 am-6:40 pm

2 stops21h 35m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Fremont to Portugal

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

What is the cheapest month to book a flight from Fremont to Portugal?

Currently, January is the cheapest month in which you can book a flight from Fremont to Portugal (average of $612). Flying from Fremont to Portugal in June is currently the most expensive (average of $1,203). 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 FR8 to PT?

Find hourly flight availability from Fremont 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 April 17, 2025.

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

What is the cheapest day to fly from Fremont to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Fremont to Portugal. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their Fremont to Portugal flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 17, 2025.
Get a feel of what it's like to fly with Delta, KLM and Air Transat from Fremont to Portugal by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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 Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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.
Austrian Airlines
7.6
Good
775 reviews
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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.
Azores Airlines
7.5
Good
65 reviews
Delta
8.0
Very good
7,916 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

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

  • How popular is this Fremont to Portugal flight route?

    Flights from Fremont to Portugal have been viewed 90 times in the past calendar month.

  • What are the cheapest airlines to fly from Fremont to Portugal one-way?

    One-way options have recently been found by users for as low as $316 on Iberia. Other airlines that offer cheap prices include Vueling from $354 and TAP AIR PORTUGAL from $372 one-way.

  • What are the most popular routes from Fremont to Portugal?

    When deciding which route to take from Fremont to Portugal consider San Francisco - Lisbon Humberto Delgado, San Francisco - Porto or San Francisco - Lajes as they are the most popular.

  • What are the most reliable airlines from Fremont to Portugal?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Fremont to Portugal on time: TAP AIR PORTUGAL (83%), JetBlue (81%), Etihad Airways (67%).

  • What are the cheapest flights from Fremont to Portugal?

    Looking at all options, your cheapest flight can be booked for $265. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $479 on average our data indicates $1,871 when flying from Fremont to Portugal.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Fremont 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 Fremont to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Fremont to Portugal (average of $612). Flying from Fremont to Portugal in June is currently the most expensive (average of $1,203). 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

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 Fremont to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
San Francisco to Barcelona-El Prat flights
San Francisco to Charles de Gaulle flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
Los Angeles to Barcelona-El Prat flights
Los Angeles to Madrid flights
Los Angeles to London City flights
Los Angeles to Frankfurt flights
Los Angeles to Istanbul flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Gatwick flights
San Francisco to Istanbul flights
San Francisco to Orly flights
San Francisco to Lisbon flights
Los Angeles to Dublin flights
Los Angeles to Amsterdam flights
San Francisco to Frankfurt flights
Los Angeles to Athens flights
San Francisco to Dublin flights
San Francisco to Athens flights
Los Angeles to Lisbon flights
Los Angeles to Orly flights
San Francisco to Amsterdam flights
San Diego to Heathrow flights
Ontario to Heathrow flights
San Francisco to Malpensa flights
San Francisco to Copenhagen flights
Ontario to Charles de Gaulle flights
San Francisco to Zurich flights
Los Angeles to Luton flights
Los Angeles to Malpensa flights
San Francisco to Linate flights
San Francisco to Madrid flights
Los Angeles to Munich flights
Los Angeles to Zurich flights
Ontario to Leonardo da Vinci/Fiumicino flights
Burbank to Charles de Gaulle flights
San Francisco to Munich flights
Los Angeles to Copenhagen flights
Las Vegas to Heathrow flights
Los Angeles to Linate flights
Los Angeles to Vicenza flights
Ontario to Athens flights
Los Angeles to Frederic Chopin flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Ontario to Barcelona-El Prat flights

Top 10 airlines flying from Fremont to Portugal

Discover the top 10 airlines that operate flights from Fremont 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$375Average$1,038FlexibilityNo cancel feeOn-timeN/A
LEVELCheapest$464Average$906FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$556Average$1,037FlexibilityNo cancel feeOn-time77%
KLMCheapest$562Average$996FlexibilityNo cancel feeOn-time75%
DeltaCheapest$568Average$947FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$569Average$1,026FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$582Average$1,265FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$584Average$842FlexibilityNo cancel feeOn-time70%
SWISSCheapest$586Average$895FlexibilityNo cancel feeOn-time79%
Scandinavian AirlinesCheapest$596Average$738FlexibilityNo cancel feeOn-time77%

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.