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$302+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Apr 6 — Apr 131
Sun 4/6
Sun 4/13
1 adult, Economy
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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 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(Gotogate)

One-way from

$359
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$803
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 Fremont to Portugal
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One-way flight from Fremont to Portugal
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Highest demand for flights based on searches. 19% potential increase in price ($210 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 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 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 1, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 3/31. 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 00mScandinavian Airlines
Sat 1/246:45 pmFAO - SFO
1 stop27h 50mScandinavian Airlines
Deal found 3/31$548
This Gurufare deal was found by Cheapflights users on 3/31. 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.
Sat 11/84:40 pmSFO - OPO
1 stop34h 35mScandinavian Airlines
Fri 11/145:55 pmOPO - SFO
1 stop28h 40mScandinavian Airlines
Deal found 3/31$599
This Delta deal was found by Cheapflights users on 3/30. 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.
Wed 10/297:00 amSFO - LIS
1 stop19h 00mDelta
Thu 11/1311:15 amLIS - SFO
1 stop20h 43mDelta
Deal found 3/30$615
This Finnair deal was found by Cheapflights users on 3/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:00 amSFO - LIS
2 stops21h 25mFinnair
Thu 11/134:10 pmLIS - SFO
2 stops34h 19mFinnair
Deal found 3/30$617
This SWISS deal was found by Cheapflights users on 3/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:25 pmSFO - LIS
1 stop32h 20mSWISS
Mon 12/13:25 pmLIS - SFO
1 stop33h 00mSWISS
Deal found 3/30$619
This Virgin Atlantic deal was found by Cheapflights users on 3/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:45 amSFO - LIS
2 stops19h 15mVirgin Atlantic
Tue 11/2511:15 amLIS - SFO
2 stops22h 03mVirgin Atlantic
Deal found 3/30$620
This Iberia deal was found by Cheapflights users on 3/31. 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.
Wed 10/14:35 pmSFO - LIS
1 stop15h 05mMultiple Airlines
Sat 10/186:35 amLIS - SFO
2 stops19h 35mMultiple Airlines
Deal found 3/31$622
This Mytrip deal was found by Cheapflights users on 3/31. 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.
Tue 4/19:50 amSFO - OPO
2 stops28h 10mMultiple Airlines
Tue 4/87:35 amOPO - SFO
2 stops22h 10mMultiple Airlines
Deal found 3/31$623
This Iberia deal was found by Cheapflights users on 3/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:10 pmSFO - LIS
1 stop16h 30mIberia
Tue 9/309:10 amLIS - SFO
1 stop17h 00mIberia
Deal found 3/30$625
This Gurufare deal was found by Cheapflights users on 3/31. 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 11/196:42 amSFO - LIS
1 stop18h 23mBritish Airways
Sun 11/306:40 pmLIS - SFO
1 stop28h 20mBritish Airways
Deal found 3/31$626
This KLM deal was found by Cheapflights users on 3/31. 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 10/201:45 pmSFO - LIS
1 stop25h 05mKLM
Mon 11/33:25 pmLIS - SFO
1 stop28h 25mKLM
Deal found 3/31$628
This Air Canada deal was found by Cheapflights users on 3/30. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:00 amSFO - LIS
2 stops24h 05mAir Canada
Wed 12/311:00 amLIS - SFO
2 stops31h 56mAir Canada
Deal found 3/30$630

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 1, 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 FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 4/19

7:40 pm-11:10 am

1 stop31h 30m

Porto

Fri 5/2

5:55 pm-4:30 pm

1 stop30h 35m

$611

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 9/21

8:10 pm-8:40 pm

1 stop16h 30m

Lisbon Humberto Delgado

Tue 9/30

9:10 am-6:10 pm

1 stop17h 00m

$625

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Tue 4/29

4:20 pm-11:00 pm

1 stop22h 40m

Lisbon Humberto Delgado

Tue 5/20

12:30 pm-12:22 am

2 stops19h 52m

$635

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 4/28

7:30 pm-11:10 pm

1 stop19h 40m

Lisbon Humberto Delgado

Sun 5/11

7:20 am-5:15 pm

1 stop17h 55m

$638

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 8/6

7:40 pm-10:35 am

1 stop30h 55m

Lisbon Humberto Delgado

Mon 8/18

8:15 pm-4:30 pm

1 stop28h 15m

$663

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 9/24

4:20 pm-11:30 am

Nonstop11h 10m

Lisbon Humberto Delgado

Wed 10/8

9:55 am-2:35 pm

Nonstop12h 40m

$678

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Wed 8/6

8:30 am-9:20 am

1 stop16h 50m

Lisbon Humberto Delgado

Tue 8/26

11:25 am-1:09 pm

2 stops33h 44m

$686

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Tue 9/16

4:15 pm-11:10 am

1 stop34h 55m

Lisbon Humberto Delgado

Thu 9/25

7:30 am-10:59 pm

2 stops23h 29m

$697

San FranciscoLajes

SFO - TER

SFOTER

San Francisco

Tue 8/12

6:45 pm-11:15 am

Nonstop9h 30m

Lajes

Tue 9/2

1:00 pm-4:45 pm

Nonstop10h 45m

$704

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Tue 9/2

4:35 pm-3:30 pm

1 stop14h 55m

Lisbon Humberto Delgado

Thu 9/18

6:35 am-9:57 pm

2 stops23h 22m

$706

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 60 results
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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 $1,213). 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 1, 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. Monday 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 1, 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
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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
381 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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
770 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

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 $360 on Iberia. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $372 and Scandinavian Airlines from $465 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: Etihad Airways (71%), TAP AIR PORTUGAL (71%), JetBlue (69%).

  • What are the cheapest flights from Fremont to Portugal?

    Looking at all options, your cheapest flight can be booked for $281. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $620 on average our data indicates $1,992 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 $1,213). 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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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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$375Average$1,035FlexibilityNo cancel feeOn-timeN/A
LEVELCheapest$465Average$976FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$556Average$1,065FlexibilityNo cancel feeOn-time77%
KLMCheapest$562Average$971FlexibilityNo cancel feeOn-time75%
DeltaCheapest$568Average$954FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$569Average$1,036FlexibilityNo cancel feeOn-time69%
SWISSCheapest$592Average$902FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$596Average$848FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$596Average$1,255FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$596Average$738FlexibilityNo cancel feeOn-time77%
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