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

To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $434. Scandinavian Airlines flights start at $553 while deals on United Airlines start at $558 one-way.

What are the most popular airlines that fly from Fremont to Porto?

Before booking your flight from Fremont to Porto check out the most popular airlines for this route: Air Canada, Air France or Delta.

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

Travelers have found it’s best to book a flight 56 days in advance to save up to 100% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 56 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Fremont to Porto 1-2 weeks in advance for as low as $752, or $752 for flights within the next 24 hours.

What is the cheapest month to fly from Fremont to Porto?

Our data shows that January tends to be the cheapest month to fly to Porto from Fremont. Users have commonly found prices around $967 for the month, but tickets can be as low as $547. Due to multiple factors, prepare for potentially higher prices in June.

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.

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.

$344+ Flights from Fremont to Porto

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Cheapflights Tip: 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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$785 (Flighttix)
One-way from	$344 (Kiwi.com)
Popular in	June
Cheapest in	January
Average price	$927

Provider with most accurate pricing for San Francisco-Porto flight deals.

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Provider most trusted by Cheapflights users for San Francisco-Porto flights.

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From Fremont to Porto

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One-way flight from Fremont to Porto

Search Deals

Highest demand for flights based on searches. 19% potential increase in price ($232 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($34 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 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 April 17, 2025.

Sun 5/47:30 pmSFO - OPO

1 stop28h 25mSWISS

Fri 5/168:40 amOPO - SFO

1 stop15h 30mSWISS

Deal found 4/17

$811

Sat 8/27:40 pmSFO - OPO

1 stop31h 30mScandinavian Airlines

Fri 8/155:55 pmOPO - SFO

2 stops36h 34mScandinavian Airlines

Deal found 4/17

$813

Thu 5/17:30 pmSFO - OPO

1 stop31h 55mMultiple Airlines

Wed 9/246:00 amOPO - SFO

2 stops25h 09mMultiple Airlines

Deal found 4/17

$814

Mon 7/288:25 pmSFO - OPO

1 stop28h 00mDelta

Mon 8/1811:25 amOPO - SFO

1 stop32h 20mDelta

Deal found 4/17

$816

Tue 8/1912:43 amSFO - OPO

2 stops24h 37mUnited Airlines

Mon 9/112:10 pmOPO - SFO

1 stop32h 30mUnited Airlines

Deal found 4/17

$820

Sun 9/2811:45 pmSFO - OPO

1 stop25h 50mAir Canada

Mon 10/66:00 amOPO - SFO

2 stops25h 09mAir Canada

Deal found 4/17

$844

Thu 7/104:20 pmSFO - OPO

1 stop20h 05mTAP AIR PORTUGAL

Wed 8/139:15 pmOPO - SFO

1 stop25h 15mTAP AIR PORTUGAL

Deal found 4/16

$879

Sun 9/281:45 pmSFO - OPO

1 stop36h 55mKLM

Sun 10/56:50 pmOPO - SFO

1 stop24h 55mKLM

Deal found 4/17

$880

Sun 4/279:10 pmSFO - OPO

1 stop16h 10mIberia

Sat 5/1010:00 pmOPO - SFO

1 stop28h 00mIberia

Deal found 4/17

$915

Sat 9/278:25 amSFO - OPO

2 stops25h 20mAustrian Airlines

Mon 10/610:25 amOPO - SFO

2 stops34h 15mAustrian Airlines

Deal found 4/17

$917

Mon 9/156:45 pmSFO - OPO

1 stop31h 05mTurkish Airlines

Tue 9/234:50 pmOPO - SFO

1 stop25h 45mTurkish Airlines

Deal found 4/17

$936

Sat 5/173:15 pmSFO - OPO

2 stops20h 05mITA Airways

Thu 6/57:35 amOPO - SFO

2 stops37h 40mITA Airways

Deal found 4/17

$958

Best flights from Fremont to Porto
Discover carefully curated flight deals from Fremont to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Sun 5/411:25 amSFO - OPO

2 stops40h 00mMultiple Airlines

Mon 5/197:20 pmOPO - SFO

1 stop28h 50mMultiple Airlines

Deal found 4/16

$785

Sun 5/47:30 pmSFO - OPO

1 stop14h 45mSWISS

Mon 5/197:20 pmOPO - SFO

1 stop28h 50mSWISS

Deal found 4/16

$807

Sat 8/27:40 pmSFO - OPO

1 stop31h 30mScandinavian Airlines

Fri 8/155:55 pmOPO - SFO

2 stops36h 34mScandinavian Airlines

Deal found 4/17

$813

Sun 7/279:05 pmSFO - OPO

1 stop18h 15mLufthansa

Wed 8/2711:10 amOPO - SFO

1 stop15h 50mLufthansa

Deal found 4/16

$817

Sat 5/310:52 pmSFO - OPO

2 stops35h 23mAir Canada

Thu 5/228:40 amOPO - SFO

2 stops19h 00mAir Canada

Deal found 4/16

$818

Tue 7/297:00 amSFO - OPO

2 stops24h 30mDelta

Mon 8/186:30 amOPO - SFO

1 stop37h 15mDelta

Deal found 4/17

$819

Tue 8/1912:43 amSFO - OPO

2 stops24h 37mUnited Airlines

Mon 9/112:10 pmOPO - SFO

1 stop32h 30mUnited Airlines

Deal found 4/17

$820

Mon 6/21:30 pmSFO - OPO

1 stop14h 15mAir Transat

Sat 6/71:30 pmOPO - SFO

1 stop31h 00mAir Transat

Deal found 4/16

$843

Sun 9/78:10 pmSFO - OPO

1 stop17h 10mIberia

Thu 10/210:00 pmOPO - SFO

2 stops23h 50mIberia

Deal found 4/15

$852

Thu 7/104:20 pmSFO - OPO

1 stop20h 05mTAP AIR PORTUGAL

Wed 8/139:15 pmOPO - SFO

1 stop25h 15mTAP AIR PORTUGAL

Deal found 4/16

$879

Sun 9/281:45 pmSFO - OPO

1 stop36h 55mKLM

Sun 10/56:50 pmOPO - SFO

1 stop24h 55mKLM

Deal found 4/17

$880

Sun 5/49:05 pmSFO - OPO

2 stops32h 10mAustrian Airlines

Mon 5/1910:25 amOPO - SFO

2 stops40h 35mAustrian Airlines

Deal found 4/16

$892

Last-minute flights from Fremont to Porto
Discover last-minute flight deals from Fremont to Porto. Data last updated April 17, 2025 and is based on user searches.

Sat 4/2612:08 amSFO - OPO

2 stops25h 37mUnited Airlines

Sat 5/1012:35 pmOPO - SFO

1 stop17h 06mUnited Airlines

Deal found 4/17

$2,016

Sat 4/267:20 pmSFO - OPO

1 stop17h 05mTAP AIR PORTUGAL

Sat 5/39:00 amOPO - SFO

1 stop16h 50mTAP AIR PORTUGAL

Deal found 4/17

$5,880

Sun 4/279:10 pmSFO - OPO

1 stop16h 10mIberia

Sat 5/1010:00 pmOPO - SFO

1 stop28h 00mIberia

Deal found 4/17

$915

Sun 4/276:20 pmSFO - OPO

2 stops19h 55mMultiple Airlines

Sat 5/1010:00 amOPO - SFO

1 stop15h 50mMultiple Airlines

Deal found 4/17

$1,260

Thu 5/17:30 pmSFO - OPO

1 stop31h 55mMultiple Airlines

Wed 9/246:00 amOPO - SFO

2 stops25h 09mMultiple Airlines

Deal found 4/17

$814

Thu 5/17:06 amSFO - OPO

2 stops18h 39mUnited Airlines

Wed 9/2412:35 pmOPO - SFO

2 stops19h 20mUnited Airlines

Deal found 4/17

$916

Sun 5/47:30 pmSFO - OPO

1 stop28h 25mSWISS

Fri 5/168:40 amOPO - SFO

1 stop15h 30mSWISS

Deal found 4/17

$811

Sun 5/49:10 amSFO - OPO

2 stops22h 20mDelta

Fri 5/166:40 amOPO - SFO

2 stops24h 49mDelta

Deal found 4/17

$829

Tue 5/69:00 amSFO - OPO

2 stops22h 15mAir Europa

Thu 5/2911:35 amOPO - SFO

2 stops22h 04mAir Europa

Deal found 4/17

$1,234

Sat 5/177:20 pmSFO - OPO

1 stop13h 40mTAP AIR PORTUGAL

Thu 6/56:05 pmOPO - SFO

1 stop27h 30mTAP AIR PORTUGAL

Deal found 4/17

$950

Sat 5/173:15 pmSFO - OPO

2 stops20h 05mITA Airways

Thu 6/57:35 amOPO - SFO

2 stops37h 40mITA Airways

Deal found 4/17

$958

Sat 5/177:40 pmSFO - OPO

2 stops38h 35mAir Canada

Thu 6/512:10 pmOPO - SFO

1 stop16h 00mAir Canada

Deal found 4/17

$992

One-way flights from Fremont to Porto
Search for one-way flight options from Fremont to Porto. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Sat 4/262:20 pmSFO - OPO

3 stops56h 40mMultiple Airlines

Deal found 4/16

$344

Sat 4/267:20 pmSFO - OPO

1 stop29h 40mTAP AIR PORTUGAL

Deal found 4/16

$434

Mon 4/284:04 pmSFO - OPO

2 stops34h 56mScandinavian Airlines

Deal found 4/16

$553

Mon 7/1412:30 amSFO - OPO

3 stops23h 15mUnited Airlines

Deal found 4/15

$558

Thu 7/37:25 pmSFO - OPO

1 stop17h 55mIberia

Deal found 4/17

$592

Thu 7/312:35 pmSFO - OPO

2 stops18h 55mDelta

Deal found 4/16

$636

Thu 7/31:45 pmSFO - OPO

1 stop22h 05mKLM

Deal found 4/16

$637

Thu 5/157:30 pmSFO - OPO

1 stop15h 00mSWISS

Deal found 4/16

$645

Mon 4/286:45 pmSFO - OPO

1 stop31h 05mTurkish Airlines

Deal found 4/16

$738

Mon 5/191:30 pmSFO - OPO

1 stop14h 25mAir Transat

Deal found 4/17

$1,167

Mon 5/197:30 amSFO - OPO

2 stops24h 00mWestJet

Deal found 4/17

$1,231

Thu 5/229:05 pmSFO - OPO

1 stop18h 15mLufthansa

Deal found 4/17

$2,280

Cheapflights Fare Finder

Use the filters below to find and compare flights from Fremont to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 5/4

11:25 am-11:25 am

2 stops40h 00m

Porto

Mon 5/19

7:20 pm-4:10 pm

1 stop28h 50m

$785

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 5/4

7:30 pm-6:15 pm

1 stop14h 45m

Porto

Mon 5/19

7:20 pm-4:10 pm

1 stop28h 50m

$807

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sat 5/3

10:52 pm-6:15 pm

2 stops35h 23m

Porto

Thu 5/22

8:40 am-7:40 pm

2 stops19h 00m

$818

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 5/4

9:10 am-3:30 pm

2 stops22h 20m

Porto

Fri 5/23

9:20 am-6:15 pm

1 stop16h 55m

$825

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Mon 6/2

1:30 pm-11:45 am

1 stop14h 15m

Porto

Sat 6/7

1:30 pm-12:30 pm

1 stop31h 00m

$843

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Wed 6/4

7:40 pm-5:05 pm

1 stop37h 25m

Porto

Fri 8/29

5:55 pm-4:30 pm

1 stop30h 35m

$874

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 7/10

4:20 pm-8:25 pm

1 stop20h 05m

Porto

Wed 8/13

9:15 pm-2:30 pm

1 stop25h 15m

$879

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 5/4

9:05 pm-1:15 pm

2 stops32h 10m

Porto

Mon 5/19

10:25 am-7:00 pm

2 stops40h 35m

$892

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Sun 4/27

9:10 pm-9:20 pm

1 stop16h 10m

Porto

Sat 5/10

10:00 pm-6:00 pm

1 stop28h 00m

$915

San FranciscoPorto

SFO - OPO

SFOOPO

San Francisco

Thu 5/1

7:06 am-9:45 am

2 stops18h 39m

Porto

Wed 9/24

12:35 pm-11:55 pm

2 stops19h 20m

$916

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 26 results

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.

Cheapflights Insights

Everything you need to know about your flight from Fremont to Porto

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

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 $1,081). 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?

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?

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

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

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

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.

Delta

8.0

Very good

7,916 reviews

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

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

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

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

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 France

7.5

Good

1,435 reviews

Delta

8.0

Very good

7,916 reviews

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

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 TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $434. Scandinavian Airlines flights start at $553 while deals on United Airlines start at $558 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 $1,081). 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

Aveiro

Coimbra

Matosinhos

Arcos de Valdevez

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Other flights to Porto

Top 10 airlines flying from Fremont to Porto

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$375	Average$899	FlexibilityNo cancel fee	On-timeN/A
Iberia	Cheapest$556	Average$1,133	FlexibilityNo cancel fee	On-time77%
Scandinavian Airlines	Cheapest$624	Average$782	FlexibilityNo cancel fee	On-time77%
Air Canada	Cheapest$653	Average$1,051	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$685	Average$1,067	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$702	Average$1,143	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$706	Average$1,120	FlexibilityNo cancel fee	On-time69%
SWISS	Cheapest$710	Average$980	FlexibilityNo cancel fee	On-time79%
Vueling	Cheapest$756	Average$949	FlexibilityNo cancel fee	On-time88%
Air Transat	Cheapest$781	Average$817	FlexibilityNo cancel fee	On-time50%

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$344+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Fremont to Porto with Cheapflights

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3. Compare prices and book

Cheapflights Tip: 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 April 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Fremont to Porto

Cheapest flights from Fremont to PortoExplore 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 April 17, 2025.

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 April 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Fremont to Porto that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Fremont to Porto

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 April 11, 2025.

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

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 April 17, 2025.

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.

Rainfall in Porto by month

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

Temperature in Porto by month

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

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 April 17, 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.

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?

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

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Alternative routes for Fremont to Porto

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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 April 17, 2025.