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Portsmouth

$548+ Cheap flights from Fremont, CA to Portsmouth, England

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 12/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Fremont to Portsmouth

Cheapest flights from Fremont to Portsmouth
Explore the most affordable flight options available from Fremont to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:55 pmSFO - SOU
1 stop34h 25mDelta
Tue 1/65:35 pmSOU - SFO
2 stops35h 24mDelta
Deal found 12/13$865
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:00 amSFO - SOU
2 stops27h 25mDelta
Tue 1/65:35 pmSOU - SFO
2 stops50h 01mDelta
Deal found 12/13$968
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:55 pmSFO - SOU
1 stop19h 05mDelta
Tue 1/65:35 pmSOU - SFO
2 stops50h 01mDelta
Deal found 12/15$970
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:26 pmSFO - SOU
2 stops44h 34mDelta
Tue 1/65:35 pmSOU - SFO
2 stops50h 01mDelta
Deal found 12/15$980
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:55 pmSFO - SOU
1 stop19h 05mDelta
Sun 1/115:45 pmSOU - SFO
2 stops49h 06mDelta
Deal found 12/15$992
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:15 pmSFO - SOU
2 stops39h 45mDelta
Sun 1/115:45 pmSOU - SFO
2 stops49h 06mDelta
Deal found 12/15$1,002
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:55 pmSFO - SOU
1 stop19h 05mDelta
Thu 1/89:00 amSOU - SFO
2 stops33h 50mDelta
Deal found 12/15$1,065
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:15 pmSFO - SOU
2 stops39h 45mDelta
Thu 1/89:00 amSOU - SFO
2 stops33h 50mDelta
Deal found 12/15$1,075

Find flight deals from Fremont to Portsmouth

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$692
(Kiwi.com)

One-way from

$548
(Delta)

Popular in

June

Cheapest in

September

Average price

$887
Provider with most accurate pricing for San Francisco-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-London (LON) flights.
Search Deals
From Fremont to Portsmouth
Search Deals
One-way flight from Fremont to Portsmouth
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 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 Portsmouth 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 Portsmouth that are best for you.

Fly from

Fremont

Fly to

Portsmouth

Route

Depart

Return

Price

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 2/18

1:55 pm-5:05 pm

1 stop19h 10m

Southampton Eastleigh

Mon 2/23

8:50 am-11:50 am

1 stop35h 00m

$768

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 1/27

6:00 am-8:50 am

2 stops18h 50m

Southampton Eastleigh

Tue 2/3

9:25 am-11:25 pm

2 stops22h 00m

$781

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/2

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Thu 4/16

9:05 am-11:45 am

1 stop34h 40m

$783

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/2

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Wed 4/15

9:05 am-11:45 am

1 stop34h 40m

$783

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 3/2

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Tue 4/14

9:05 am-11:45 am

1 stop34h 40m

$783

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 3/3

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Wed 4/15

9:05 am-11:45 am

1 stop34h 40m

$783

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 3/4

7:00 am-8:20 am

2 stops17h 20m

Southampton Eastleigh

Thu 4/16

9:05 am-11:45 am

1 stop34h 40m

$788

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 3/1

10:54 pm-8:10 am

2 stops25h 16m

Southampton Eastleigh

Wed 4/15

9:05 am-11:45 am

1 stop34h 40m

$788

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Sun 3/1

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Tue 4/14

5:20 pm-9:35 pm

2 stops36h 15m

$793

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 2/18

1:55 pm-5:05 pm

1 stop19h 10m

Southampton Eastleigh

Sun 2/22

5:45 pm-11:50 am

1 stop26h 05m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 19 results
1
2

Best time to book a flight from Fremont to Portsmouth

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

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

Currently, October is the cheapest month in which you can book a flight from Fremont to Portsmouth (average of $497). Flying from Fremont to Portsmouth in June is currently the most expensive (average of $813). 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 P0R?

Find hourly flight availability from Fremont to Portsmouth. 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.

A simple way to save on the total cost of your ticket is to fly from Fremont to Portsmouth in the evening. If you’re flexible enough to do this you can expect to save up to 30% on your trip compared to booking a flight at noon.

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

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

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

Weekly flight availability from Fremont to Portsmouth

Explore weekly flight availability from Fremont to Portsmouth. 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 December 15, 2025.

The most flights from FR8 to P0R are scheduled on a Tuesday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (25 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated December 15, 2025.
Read reviews from past customers who have flown Delta from Fremont to Portsmouth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

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

Comfort

7.9

Overall

7.9

Food

7.3

Boarding

8.1

Entertainment

7.9

Crew

8.5

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 Portsmouth. 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 Fremont to Portsmouth?

    Departing from Fremont to Portsmouth will take you 18h 50m. Airlines will cover a distance of 5349 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most reliable airlines from Fremont to Portsmouth?

    The top 3 most reliable airlines when flying from Fremont to Portsmouth are American Airlines (90%), Aer Lingus (90%) and Alaska Airlines (90%).

  • What are the cheapest flights from Fremont to Portsmouth?

    The cheapest flight price from Fremont to Portsmouth is $313. On average you can expect to pay $2,500. The most popular route, (San Francisco - Southampton Eastleigh), can usually be booked for $692.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Fremont to Portsmouth (average of $497). Flying from Fremont to Portsmouth in June is currently the most expensive (average of $813). 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.

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Alternative routes for Fremont to Portsmouth

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 Portsmouth

Discover the top 10 airlines that operate flights from Fremont to Portsmouth. 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
JetBlueCheapest$151Average$826FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$364Average$580FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$371Average$558FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$494Average$655FlexibilityNo cancel feeOn-time75%
SWISSCheapest$513Average$703FlexibilityNo cancel feeOn-time79%
British AirwaysCheapest$514Average$743FlexibilityNo cancel feeOn-time70%
DeltaCheapest$541Average$809FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$567Average$841FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$568Average$846FlexibilityNo cancel feeOn-time72%
IberiaCheapest$572Average$673FlexibilityNo cancel feeOn-time77%

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