How long is the flight from Portsmouth to Fremont?

Departing from Portsmouth to Fremont will take you 35h. The distance from Portsmouth to Fremont is about 5349 mi.

In terms of precipitation, rainfall in Fremont ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit Fremont when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Fremont, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What are the cheapest flights from Portsmouth to Fremont?

The cheapest flight price from Portsmouth to Fremont is £378. On average you can expect to pay £1,995. The most popular route, (Southampton Eastleigh - San Francisco), can usually be booked for £427.

What are the most reliable airlines from Portsmouth to Fremont?

Before booking your flight to Fremont from Portsmouth, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).

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

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

How can I find direct flights from Portsmouth to Fremont?

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

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

Yes. Cheapflights offers flight deals from Portsmouth to Fremont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£427+ Flights from Portsmouth to Fremont

Cheap flight deals from Portsmouth to Fremont

Round-trip from	£427
Popular in	July
Cheapest in	February
Average price	£492

Delta
11/3-19/3
2 total stops
54h 05m total
Portsmouth to Fremont

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£55 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Find flight deals from Portsmouth to Fremont

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to Fremont
Explore the most affordable flight options available from Portsmouth to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.

Wed 11/308:50SOU - SFO

1 stop35h 00mDelta

Thu 19/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£427

Wed 11/317:35SOU - SFO

1 stop26h 15mDelta

Mon 16/314:55SFO - SOU

1 stop34h 25mDelta

Deal found 4/1£454

Fri 13/308:50SOU - SFO

1 stop35h 00mDelta

Wed 18/314:55SFO - SOU

1 stop34h 25mDelta

Deal found 4/1£456

Fri 20/217:35SOU - SFO

2 stops36h 03mVirgin Atlantic

Fri 27/206:05SFO - SOU

2 stops18h 45mVirgin Atlantic

Deal found 6/1£475

Sun 8/309:30SOU - SFO

1 stop34h 20mDelta

Mon 16/322:55SFO - SOU

2 stops26h 25mDelta

Deal found 4/1£481

Fri 13/317:35SOU - SFO

1 stop26h 15mDelta

Mon 16/314:55SFO - SOU

1 stop34h 25mDelta

Deal found 4/1£483

Wed 8/709:15SOU - SFO

2 stops21h 52mDelta

Sat 25/713:45SFO - SOU

2 stops19h 15mDelta

Deal found 6/1£492

Sun 8/309:30SOU - SFO

1 stop15h 05mBritish Airways

Sat 21/318:20SFO - SOU

1 stop31h 25mBritish Airways

Deal found 4/1£505

Sat 14/309:30SOU - SFO

1 stop14h 05mBritish Airways

Wed 18/318:20SFO - SOU

1 stop14h 15mBritish Airways

Deal found 4/1£506

Sat 14/309:30SOU - SFO

1 stop14h 05mBritish Airways

Sun 15/319:20SFO - SOU

1 stop33h 35mBritish Airways

Deal found 4/1£511

Tue 7/718:05SOU - SFO

1 stop25h 40mDelta

Sat 25/713:45SFO - SOU

2 stops19h 15mDelta

Deal found 6/1£513

Best flights from Portsmouth to Fremont
Discover carefully curated flight deals from Portsmouth to Fremont that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 January 2026.

Wed 11/308:50SOU - SFO

1 stop35h 00mDelta

Wed 18/314:55SFO - SOU

1 stop19h 30mDelta

Deal found 4/1£427

Fri 20/217:35SOU - SFO

2 stops36h 03mVirgin Atlantic

Fri 27/206:05SFO - SOU

2 stops18h 45mVirgin Atlantic

Deal found 6/1£475

Wed 11/308:50SOU - SFO

1 stop35h 00mDelta

Thu 19/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£427

Thu 12/308:50SOU - SFO

1 stop35h 00mDelta

Thu 19/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£427

Wed 11/317:35SOU - SFO

1 stop26h 15mDelta

Sun 15/314:55SFO - SOU

1 stop34h 25mDelta

Deal found 4/1£454

Mon 9/317:40SOU - SFO

1 stop26h 10mDelta

Thu 19/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£454

Tue 10/317:35SOU - SFO

1 stop26h 15mDelta

Thu 19/314:55SFO - SOU

1 stop34h 55mDelta

Deal found 4/1£454

Wed 11/317:35SOU - SFO

1 stop26h 15mDelta

Tue 17/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£454

Sun 8/317:45SOU - SFO

1 stop26h 05mDelta

Wed 18/314:55SFO - SOU

1 stop34h 25mDelta

Deal found 4/1£454

Fri 13/308:50SOU - SFO

1 stop35h 00mDelta

Thu 19/314:55SFO - SOU

1 stop19h 05mDelta

Deal found 4/1£456

Mon 9/308:50SOU - SFO

1 stop35h 00mDelta

Tue 17/323:35SFO - SOU

2 stops25h 45mDelta

Deal found 4/1£481

Tue 10/317:35SOU - SFO

1 stop26h 15mDelta

Mon 16/305:40SFO - SOU

2 stops28h 20mDelta

Deal found 4/1£481

Last-minute flights from Portsmouth to Fremont
Discover last-minute flight deals from Portsmouth to Fremont. Data last updated 7 January 2026 and is based on user searches.

Mon 12/117:35SOU - SFO

2 stops32h 41mDelta

Sat 18/410:18SFO - SOU

2 stops22h 32mDelta

Deal found 6/1£881

Mon 12/117:35SOU - SFO

2 stops34h 14mDelta

Fri 17/406:00SFO - SOU

2 stops18h 45mDelta

Deal found 6/1£912

Mon 12/117:35SOU - SFO

2 stops32h 14mDelta

Mon 13/413:45SFO - SOU

1 stop19h 05mDelta

Deal found 6/1£919

Thu 22/120:10SOU - SFO

1 stop27h 25mBritish Airways

Mon 26/117:20SFO - SOU

1 stop34h 35mBritish Airways

Deal found 5/1£511

Thu 12/220:35SOU - SFO

2 stops26h 25mBritish Airways

Thu 19/217:30SFO - SOU

2 stops16h 00mBritish Airways

Deal found 6/1£867

Fri 20/217:35SOU - SFO

2 stops36h 03mVirgin Atlantic

Fri 27/206:05SFO - SOU

2 stops18h 45mVirgin Atlantic

Deal found 6/1£475

Fri 20/214:25SOU - SFO

2 stops32h 10mMultiple Airlines

Fri 27/216:40SFO - SOU

3 stops32h 05mMultiple Airlines

Deal found 6/1£893

One-way flights from Portsmouth to Fremont
Search for one-way flight options from Portsmouth to Fremont. Find affordable one-way fares based on user searches. Data last updated 7 January 2026.

Mon 27/409:10SOU - SFO

1 stop14h 40mBritish Airways

Deal found 6/1£433

Sun 31/515:00SOU - SFO

2 stops30h 50mBritish Airways

Deal found 4/1£509

Wed 27/509:10SOU - SFO

1 stop14h 40mBritish Airways

Deal found 6/1£524

Sat 30/510:15SOU - SFO

2 stops59h 35mBritish Airways

Deal found 6/1£530

Thu 28/508:55SOU - SFO

2 stops36h 55mBritish Airways

Deal found 6/1£551

Fri 29/506:50SOU - SFO

2 stops39h 00mBritish Airways

Deal found 4/1£551

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Wed 11/3

08:50-12:50

1 stop35h 00m

San Francisco

Wed 18/3

14:55-17:25

1 stop19h 30m

£427

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Wed 11/3

08:50-12:50

1 stop35h 00m

San Francisco

Thu 19/3

14:55-17:00

1 stop19h 05m

£427

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Thu 12/3

08:50-12:50

1 stop35h 00m

San Francisco

Thu 19/3

14:55-17:00

1 stop19h 05m

£427

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Wed 11/3

17:35-12:50

1 stop26h 15m

San Francisco

Sun 15/3

14:55-08:20

1 stop34h 25m

£454

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 9/3

17:40-12:50

1 stop26h 10m

San Francisco

Thu 19/3

14:55-17:00

1 stop19h 05m

£454

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Tue 10/3

17:35-12:50

1 stop26h 15m

San Francisco

Thu 19/3

14:55-08:50

1 stop34h 55m

£454

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Wed 11/3

17:35-12:50

1 stop26h 15m

San Francisco

Tue 17/3

14:55-17:00

1 stop19h 05m

£454

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sun 8/3

17:45-12:50

1 stop26h 05m

San Francisco

Wed 18/3

14:55-08:20

1 stop34h 25m

£454

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Fri 13/3

08:50-12:50

1 stop35h 00m

San Francisco

Thu 19/3

14:55-17:00

1 stop19h 05m

£456

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Fri 20/2

17:35-21:38

2 stops36h 03m

San Francisco

Fri 27/2

06:05-08:50

2 stops18h 45m

£475

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 21 results

Best time to book a flight from Portsmouth to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Portsmouth with our price prediction graph.

Estimated return 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 Portsmouth to Fremont

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

Currently, February is the cheapest month in which you can book a flight from Portsmouth to Fremont (average of £350). Flying from Portsmouth to Fremont in July is currently the most expensive (average of £441). 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 P0R to FR8?

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

Weekly flight availability from Portsmouth to Fremont

The most flights from P0R to FR8 are scheduled on a Monday (31 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 on average).

Related info for your journey

How long is the flight from Portsmouth to Fremont?
Departing from Portsmouth to Fremont will take you 35h. The distance from Portsmouth to Fremont is about 5349 mi.
What are the most reliable airlines from Portsmouth to Fremont?
Before booking your flight to Fremont from Portsmouth, check out the most reliable airlines to get you to your destination on time: Air Canada (88%), Austrian Airlines (88%), United Airlines( 88%).
What are the cheapest flights from Portsmouth to Fremont?
The cheapest flight price from Portsmouth to Fremont is £378. On average you can expect to pay £1,995. The most popular route, (Southampton Eastleigh - San Francisco), can usually be booked for £427.
Can I find deals for flights from Portsmouth to Fremont that include hotel bookings?
Yes. In addition to deals on Portsmouth to Fremont flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Fremont?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Fremont.
Can I find deals for business class flights from Portsmouth to Fremont?
Yes. Cheapflights offers flight deals from Portsmouth to Fremont 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 Portsmouth to Fremont?
Currently, February is the cheapest month in which you can book a flight from Portsmouth to Fremont (average of £350). Flying from Portsmouth to Fremont in July is currently the most expensive (average of £441). 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

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Top 10 airlines flying from Portsmouth to Fremont

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£236	Average£561	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	Cheapest£333	Average£476	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	Cheapest£335	Average£548	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£350	Average£552	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Scandinavian Airlines	Cheapest£352	Average£538	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
SWISS	Cheapest£355	Average£436	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
TAP AIR PORTUGAL	Cheapest£356	Average£455	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Finnair	Cheapest£370	Average£479	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Virgin Atlantic	Cheapest£373	Average£531	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£373	Average£569	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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How does Cheapflights help users find flights from Portsmouth to Fremont?

Cheapflights makes it easy to find Portsmouth to Fremont flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Fremont?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Fremont from Portsmouth.

Can Cheapflights find flights from Portsmouth to Fremont with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Fremont, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Portsmouth to Fremont become cheaper?

Yes, Cheapflights offers price alerts on Portsmouth to Fremont flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Portsmouth to Fremont from £427

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Portsmouth to Fremont

Keep the following information in mind while searching for Portsmouth to Fremont flight deals. Data was last updated 7 January 2026.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Portsmouth to Fremont

Cheapest flights from Portsmouth to FremontExplore the most affordable flight options available from Portsmouth to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.

Explore the most affordable flight options available from Portsmouth to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.

Cheapflights Fare Finder

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

Best time to book a flight from Portsmouth to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont from Portsmouth with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest time of day to fly from P0R to FR8?

Find hourly flight availability from Portsmouth to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 January 2026.

Weekly flight availability from Portsmouth to Fremont

Explore weekly flight availability from Portsmouth to Fremont. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 7 January 2026.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Fremont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Portsmouth to Fremont?

What are the most reliable airlines from Portsmouth to Fremont?

What are the cheapest flights from Portsmouth to Fremont?

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

How can I find direct flights from Portsmouth to Fremont?

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

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

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 Portsmouth to Fremont

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

Top 10 airlines flying from Portsmouth to Fremont

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Fremont?

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Fremont?

Can Cheapflights find flights from Portsmouth to Fremont with no change fees?

Can Cheapflights notify me if prices for flights from Portsmouth to Fremont become cheaper?

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Cheapest flights from Portsmouth to Fremont
Explore the most affordable flight options available from Portsmouth to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.