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Cheap flights from Portsmouth to Fremont from £576

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
20 lug — 27 lug1
1 adult

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 15 luglio 2025.

Round-trip from

£576

Popular in

April

Cheapest in

February

Average price

£879
KLM
  • KLM
  • 28/8-4/9
  • 3 total stops
  • 52h 10m total
  • Portsmouth to Fremont
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Portsmouth to Fremont

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 15 luglio 2025.

gio 28/809:20SOU - SFO
1 stop34h 25mKLM
gio 4/907:00SFO - SOU
2 stops17h 45mKLM
Deal found 14/7£576
ven 5/919:55SOU - SFO
2 stops29h 30mBritish Airways
lun 8/917:45SFO - SOU
1 stop17h 45mBritish Airways
Deal found 14/7£739
ven 8/818:25SOU - SFO
1 stop25h 20mDelta
dom 31/807:05SFO - SOU
2 stops17h 40mDelta
Deal found 14/7£895
lun 28/720:30SOU - SFO
2 stops25h 20mMultiple Airlines
gio 31/716:05SFO - SOU
1 stop15h 35mMultiple Airlines
Deal found 13/7£954

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Fremont 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 858,174 searches. Data last updated 15 luglio 2025.
Use the filters below to find and compare flights from Portsmouth to Fremont that are best for you.

Fly from

Portsmouth

Fly to

Fremont

Route

Depart

Return

Price

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

gio 28/8

09:20-11:45

1 stop34h 25m

San Francisco

gio 4/9

07:00-08:45

2 stops17h 45m

£576

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

gio 8/1

06:40-18:45

2 stops20h 05m

San Francisco

lun 12/1

17:30-21:15

2 stops19h 45m

£703

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

ven 8/8

18:25-11:45

1 stop25h 20m

San Francisco

dom 31/8

07:05-08:45

2 stops17h 40m

£895

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

lun 28/7

20:30-13:50

2 stops25h 20m

San Francisco

gio 31/7

16:05-15:40

1 stop15h 35m

£954

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

gio 2/10

09:20-11:45

1 stop34h 25m

£1,161

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

mar 22/7

09:10-15:55

1 stop14h 45m

£2,111

Flights are sorted by cheapest return flights first.

Deals found on 14/7

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 £538). Flying from Portsmouth to Fremont in July is currently the most expensive (average of £803). 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?

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 15 luglio 2025.

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.

What is the cheapest day to fly from Portsmouth to Fremont?

Use this chart to determine the cheapest time to fly return from Portsmouth to Fremont. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Fremont flight should consider departing on Friday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 15 luglio 2025.

The most flights from P0R to FR8 are scheduled on a Monday (43 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (43 on average).

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated 15 luglio 2025.
Read through reviews of airlines operating flights from Portsmouth to Fremont, such as Delta, KLM, andBritish Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,956 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,372 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
7,134 reviews
Delta
8.0
Very Good
7,956 reviews
Check prices

Boarding

8.2

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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 New Zealand (87%), Air Canada (87%), Austrian Airlines( 87%).

  • What are the cheapest flights from Portsmouth to Fremont?

    The cheapest flight price from Portsmouth to Fremont is £400. On average you can expect to pay £1,937. The most popular route, (Southampton Eastleigh - San Francisco), can usually be booked for £507.

  • 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 £538). Flying from Portsmouth to Fremont in July is currently the most expensive (average of £803). 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 Portsmouth to Fremont

Discover the top 10 airlines that operate flights from Portsmouth to Fremont. 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 858,174 searches. Data last updated 15 luglio 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£237Average£487FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air FranceCheapest£315Average£429FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£337Average£572FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
TAP AIR PORTUGALCheapest£348Average£471FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£349Average£578FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
SWISSCheapest£351Average£408FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Virgin AtlanticCheapest£361Average£504FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£362Average£485FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
British AirwaysCheapest£364Average£594FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£369Average£477FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

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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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