Porto

$341+ Cheap flights from Fremont, CA to Porto (OPO)

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — OPO
Feb 28 — Mar 71
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The best prices from Fremont to Porto are usually found in January or February, booked 55 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap flight deals from Fremont to Porto

Keep the following information in mind while searching for Fremont to Porto flight deals. Data was last updated February 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$611
(Mytrip)

One-way from

$341
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$732
Provider with most accurate pricing for San Francisco-Porto flight deals.
Provider most trusted by Cheapflights users for San Francisco-Porto flights.
From Fremont to Porto
One-way flight from Fremont to Porto
Highest demand for flights based on searches. 20% potential increase in price ($256 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in February 2025

Find flight deals from Fremont to Porto

Cheapest flights from Fremont to Porto
Explore the most affordable flight options available from Fremont to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 23, 2025.

This Mytrip deal was found by Cheapflights users on 2/22. 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.
Wed 4/28:20 amSFO - OPO
3 stops23h 55mMultiple Airlines
Wed 4/97:10 amOPO - SFO
2 stops35h 27mMultiple Airlines
Deal found 2/22$611
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Wed 4/211:35 amSFO - OPO
1 stop14h 10mUnited Airlines
Tue 4/86:00 amOPO - SFO
1 stop18h 05mUnited Airlines
Deal found 2/23$622
This KLM deal was found by Cheapflights users on 2/22. 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.
Sun 3/92:50 pmSFO - OPO
1 stop17h 35mKLM
Mon 3/2412:15 pmOPO - SFO
1 stop31h 35mKLM
Deal found 2/22$632
This SWISS deal was found by Cheapflights users on 2/22. 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.
Sun 3/307:30 pmSFO - OPO
1 stop14h 45mSWISS
Wed 4/98:40 amOPO - SFO
1 stop15h 30mSWISS
Deal found 2/22$636
This Mytrip deal was found by Cheapflights users on 2/23. 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.
Wed 4/28:30 amSFO - OPO
2 stops26h 00mAir Canada
Wed 4/912:10 pmOPO - SFO
2 stops30h 27mAir Canada
Deal found 2/23$640
This Delta deal was found by Cheapflights users on 2/22. 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 3/92:50 pmSFO - OPO
1 stop36h 40mDelta
Mon 3/2411:45 amOPO - SFO
2 stops29h 54mDelta
Deal found 2/22$649
This Lufthansa deal was found by Cheapflights users on 2/23. 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.
Sat 3/2910:59 pmSFO - OPO
2 stops39h 51mLufthansa
Tue 4/811:05 amOPO - SFO
1 stop15h 55mLufthansa
Deal found 2/23$659
This Gurufare deal was found by Cheapflights users on 2/22. 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 8/207:40 pmSFO - OPO
1 stop37h 25mScandinavian Airlines
Wed 9/312:05 pmOPO - SFO
1 stop36h 25mScandinavian Airlines
Deal found 2/22$751
This British Airways deal was found by Cheapflights users on 2/23. 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 4/34:20 pmSFO - OPO
1 stop20h 05mBritish Airways
Mon 4/79:15 pmOPO - SFO
1 stop24h 35mBritish Airways
Deal found 2/23$789
This SmartFares deal was found by Cheapflights users on 2/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/11:25 pmSFO - OPO
1 stop14h 20mAir Transat
Mon 6/91:30 pmOPO - SFO
1 stop30h 53mAir Transat
Deal found 2/22$809
This Iberia deal was found by Cheapflights users on 2/23. 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 5/48:00 pmSFO - OPO
1 stop17h 20mIberia
Fri 5/1610:00 pmOPO - SFO
1 stop28h 00mIberia
Deal found 2/23$834
This Gotogate deal was found by Cheapflights users on 2/22. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/168:20 pmSFO - OPO
1 stop34h 40mTAP AIR PORTUGAL
Sat 5/3110:00 amOPO - SFO
1 stop15h 50mTAP AIR PORTUGAL
Deal found 2/22$868

Find flights from Fremont to Porto within your budget

Customize your flight search to find flights from Fremont to Porto 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 February 23, 2025.

Fly from

Fremont

Fly to

Porto

Route

Depart

Return

Price

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 4/2

8:20 am-4:15 pm

3 stops23h 55m

Porto

Wed 4/9

7:10 am-10:37 am

2 stops35h 27m

$611

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 4/2

11:35 am-9:45 am

1 stop14h 10m

Porto

Tue 4/8

6:00 am-4:05 pm

1 stop18h 05m

$622

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 3/9

2:50 pm-3:25 pm

1 stop17h 35m

Porto

Mon 3/24

12:15 pm-12:50 pm

1 stop31h 35m

$632

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 3/30

7:30 pm-6:15 pm

1 stop14h 45m

Porto

Wed 4/9

8:40 am-4:10 pm

1 stop15h 30m

$636

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 4/2

8:30 am-6:30 pm

2 stops26h 00m

Porto

Wed 4/9

12:10 pm-10:37 am

2 stops30h 27m

$640

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 3/9

2:50 pm-10:30 am

1 stop36h 40m

Porto

Mon 3/24

11:45 am-10:39 am

2 stops29h 54m

$649

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 3/29

10:59 pm-10:50 pm

2 stops39h 51m

Porto

Tue 4/8

11:05 am-7:00 pm

1 stop15h 55m

$659

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 8/20

7:40 pm-5:05 pm

1 stop37h 25m

Porto

Wed 9/3

12:05 pm-4:30 pm

1 stop36h 25m

$751

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 4/3

4:20 pm-8:25 pm

1 stop20h 05m

Porto

Mon 4/7

9:15 pm-1:50 pm

1 stop24h 35m

$789

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 6/1

1:25 pm-11:45 am

1 stop14h 20m

Porto

Mon 6/9

1:30 pm-12:23 pm

1 stop30h 53m

$809

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 29 results
1
2
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Best time to book a flight from Fremont to Porto

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

Travel insights for flights from Fremont to Porto

Get recent, data-driven insights about flights from Fremont to Porto including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Fremont to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Fremont to Porto. Price data was last updated on February 14, 2025.

The price you pay for your flight from Fremont to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 55 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Fremont to Porto (average of $523). Flying from Fremont to Porto in June is currently the most expensive (average of $1,092). 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 OPO?

Find hourly flight availability from Fremont to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 23, 2025.

When flying from Fremont to Porto, 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 Porto?

Use this chart to determine the cheapest time to fly round-trip from Fremont to Porto. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Fremont to Porto flight should consider departing on Sunday 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.

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated February 23, 2025.
Read reviews from past customers who have flown Delta, KLM and Air Transat from Fremont to Porto. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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.

8.0
Very good
8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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.

8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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.

8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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.

8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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.

8.0
Very good

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Comfort

8.0

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 Porto. 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 into for flights to Porto from Fremont?

    Most people fly into Porto (OPO) if they book a flight to Porto from Fremont. On average, Porto has 0 inbound flights from Fremont per day from 12 airlines. Porto is conveniently located just 6.8 mi from Porto’s city center.

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

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $397. KLM flights start at $449 while deals on TAP AIR PORTUGAL start at $463 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Fremont to Porto (average of $523). Flying from Fremont to Porto in June is currently the most expensive (average of $1,092). 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

Traveling to a place near Fremont?

Book flights to Fremont if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for Fremont to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Fremont to Porto

Discover the top 10 airlines that operate flights from Fremont to Porto. 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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$375Average$907FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$516Average$1,111FlexibilityNo cancel feeOn-time77%
DeltaCheapest$553Average$1,059FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$617Average$863FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$666Average$1,027FlexibilityNo cancel feeOn-time67%
KLMCheapest$702Average$1,090FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$707Average$1,167FlexibilityNo cancel feeOn-time69%
SWISSCheapest$710Average$1,047FlexibilityNo cancel feeOn-time79%
Air TransatCheapest$782Average$807FlexibilityNo cancel feeOn-time50%
VuelingCheapest$786Average$1,058FlexibilityNo cancel feeOn-time88%
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