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Portugal

$346+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LIS
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This Finnair deal was found by Cheapflights users on 12/13. 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.
Mon 12/296:10 amSFO - LIS
1 stop18h 55mMultiple Airlines
Tue 1/206:30 amLIS - SFO
2 stops26h 17mMultiple Airlines
Deal found 12/13$508
This Expedia deal was found by Cheapflights users on 12/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:40 pmSFO - LIS
1 stop17h 50mLufthansa
Mon 1/266:50 pmLIS - SFO
2 stops25h 50mLufthansa
Deal found 12/13$524
This FlightHub deal was found by Cheapflights users on 12/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:25 pmSFO - LIS
1 stop32h 20mSWISS
Mon 1/193:25 pmLIS - SFO
2 stops29h 55mSWISS
Deal found 12/13$526
This CheapOair deal was found by Cheapflights users on 12/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:25 pmSFO - LIS
2 stops34h 20mMultiple Airlines
Wed 1/1411:20 amLIS - SFO
2 stops19h 38mMultiple Airlines
Deal found 12/13$530
This FlightHub deal was found by Cheapflights users on 12/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:40 pmSFO - LIS
1 stop17h 00mLufthansa
Mon 1/196:50 pmLIS - SFO
2 stops29h 05mLufthansa
Deal found 12/14$548
This Trip.com deal was found by Cheapflights users on 12/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:25 amSFO - LIS
1 stop17h 50mLufthansa
Mon 12/223:55 pmLIS - SFO
1 stop36h 15mLufthansa
Deal found 12/14$560
This KAYAK deal was found by Cheapflights users on 12/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/299:40 pmSFO - LIS
2 stops31h 10mBrussels Airlines
Mon 1/261:40 pmLIS - SFO
2 stops37h 55mBrussels Airlines
Deal found 12/13$571
This Mytrip deal was found by Cheapflights users on 12/13. 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.
Sun 12/148:35 amSFO - LIS
1 stop15h 35mMultiple Airlines
Sun 12/2110:50 amLIS - SFO
1 stop18h 03mMultiple Airlines
Deal found 12/13$587
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/141:00 pmSFO - LIS
1 stop13h 15mUnited Airlines
Sun 12/2110:50 amLIS - SFO
1 stop18h 03mUnited Airlines
Deal found 12/13$592
This oojo deal was found by Cheapflights users on 12/14. 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.
Sun 12/147:00 amSFO - PDL
1 stop16h 20mMultiple Airlines
Sun 12/215:50 pmPDL - SFO
1 stop27h 59mMultiple Airlines
Deal found 12/14$1,099
This Booking.com deal was found by Cheapflights users on 12/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:40 pmSFO - FNC
1 stop30h 55mBritish Airways
Thu 1/812:00 pmFNC - SFO
2 stops32h 09mBritish Airways
Deal found 12/15$1,176
This oojo deal was found by Cheapflights users on 12/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:15 amSFO - PDL
2 stops23h 25mMultiple Airlines
Mon 12/225:50 pmPDL - SFO
1 stop25h 05mMultiple Airlines
Deal found 12/15$1,427

Find flight deals from Fremont to Portugal

Keep the following information in mind while searching for Fremont to Portugal flight deals. Data was last updated December 15, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$488
(FlightHub)

One-way from

$346
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$974
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. 15% potential increase in price ($149 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 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 December 15, 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 FranciscoFaro

SFO - FAO

SFOFAO

San Francisco

Mon 2/23

4:40 pm-9:45 am

2 stops33h 05m

Faro

Wed 3/4

10:35 am-2:35 pm

2 stops36h 00m

$488

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Tue 1/13

1:55 pm-9:30 am

1 stop35h 35m

Funchal Madeira

Mon 1/19

10:25 am-11:50 am

1 stop33h 25m

$497

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Mon 1/12

10:55 pm-9:30 am

2 stops50h 35m

Funchal Madeira

Mon 1/19

10:25 am-11:50 am

1 stop33h 25m

$501

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sun 3/1

9:30 pm-9:00 am

2 stops27h 30m

Lisbon Humberto Delgado

Tue 3/31

5:00 am-5:28 pm

2 stops20h 28m

$505

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Sat 1/10

9:00 pm-8:00 am

1 stop27h 00m

Lisbon Humberto Delgado

Fri 1/23

5:30 am-1:25 pm

1 stop15h 55m

$508

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 3/5

8:25 am-7:55 am

1 stop15h 30m

Lisbon Humberto Delgado

Wed 3/11

5:00 am-9:10 pm

1 stop23h 10m

$510

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 2/26

8:25 am-7:55 am

1 stop15h 30m

Lisbon Humberto Delgado

Thu 4/2

6:15 am-7:00 pm

1 stop20h 45m

$512

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Mon 3/2

8:54 am-3:10 pm

2 stops22h 16m

Lisbon Humberto Delgado

Mon 3/30

9:50 am-12:50 pm

1 stop35h 00m

$514

San FranciscoLisbon

SFO - LIS

SFOLIS

San Francisco

Thu 3/5

5:05 am-7:55 am

2 stops18h 50m

Lisbon Humberto Delgado

Thu 3/12

5:00 am-1:40 pm

1 stop15h 40m

$514

San FranciscoFunchal

SFO - FNC

SFOFNC

San Francisco

Thu 1/29

1:55 pm-5:10 pm

1 stop19h 15m

Funchal Madeira

Thu 2/5

10:20 am-11:50 am

1 stop33h 30m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 60 results
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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 $488). Flying from Fremont 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 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 December 15, 2025.

It’s optimal to fly from Fremont to Portugal in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the morning.

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 December 16, 2024.

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

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 December 15, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and TAP AIR PORTUGAL from Fremont to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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.
United Airlines
7.4
Good
9,092 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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.
TAP AIR PORTUGAL
7.2
Good
2,089 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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 Canada
7.1
Good
10,525 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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.
British Airways
6.7
Okay
7,575 reviews
Delta
7.9
Good
8,008 reviews

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.9

Comfort

7.9

Food

7.3

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 20 times in the past calendar month.

  • How long is the flight from Fremont to Portugal?

    Airlines like Scandinavian Airlines, KLM, and Delta fly from Fremont to Portugal in about 27h 30m. The time it takes to get you to your destination can typically vary by up to 8h 05m. There are 5664 mi between Fremont and Portugal. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $258 on Iberia. Other airlines that offer cheap prices include LEVEL from $308 and TAP AIR PORTUGAL from $315 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 (80%), JetBlue (78%), TAP AIR PORTUGAL (78%).

  • What are the cheapest flights from Fremont to Portugal?

    Looking at all options, your cheapest flight can be booked for $318. While the most popular route (San Francisco - Lisbon Humberto Delgado) can be booked for $439 on average, our data indicates $1,682 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 $488). Flying from Fremont 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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See prices for flight routes from nearby airports that may be better suited for you.
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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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$351Average$745FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$363Average$986FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$409Average$717FlexibilityNo cancel feeOn-time77%
KLMCheapest$489Average$790FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$495Average$760FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$496Average$1,099FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$515Average$803FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$516Average$1,066FlexibilityNo cancel feeOn-time69%
VuelingCheapest$532Average$862FlexibilityNo cancel feeOn-time88%
DeltaCheapest$540Average$1,003FlexibilityNo cancel feeOn-timeN/A

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