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Portsmouth

$490+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LHR
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Fremont to Portsmouth

Keep the following information in mind while searching for Fremont to Portsmouth flight deals. Data was last updated August 18, 2025.

Round-trip from

$906
(Kiwi.com)

One-way from

$490
(Ovago)

Popular in

June

Cheapest in

October

Average price

$719
From Fremont to Portsmouth
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One-way flight from Fremont to Portsmouth
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Highest demand for flights based on searches. 16% potential increase in price ($146 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/305:40 pmSFO - SOU
1 stop31h 00mMultiple Airlines
Tue 10/78:00 pmSOU - SFO
2 stops33h 24mMultiple Airlines
Deal found 8/16$906
This Delta deal was found by Cheapflights users on 8/16. 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 9/111:45 pmSFO - SOU
1 stop19h 15mDelta
Mon 9/225:35 pmSOU - SFO
1 stop26h 10mDelta
Deal found 8/16$924
This Delta deal was found by Cheapflights users on 8/16. 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 9/107:05 amSFO - SOU
2 stops17h 40mDelta
Mon 9/229:20 amSOU - SFO
1 stop34h 25mDelta
Deal found 8/16$928
This eDestinos deal was found by Cheapflights users on 8/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:40 pmSFO - SOU
1 stop17h 50mAer Lingus
Fri 10/109:40 amSOU - SFO
1 stop14h 15mAer Lingus
Deal found 8/16$929
This Gurufare deal was found by Cheapflights users on 8/16. 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.
Mon 9/155:40 pmSFO - SOU
1 stop30h 25mAer Lingus
Mon 9/228:00 pmSOU - SFO
1 stop27h 55mAer Lingus
Deal found 8/16$933
This Delta deal was found by Cheapflights users on 8/16. 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 9/111:45 pmSFO - SOU
1 stop19h 15mDelta
Tue 9/235:35 pmSOU - SFO
2 stops30h 29mDelta
Deal found 8/16$934
This Delta deal was found by Cheapflights users on 8/16. 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 9/147:05 amSFO - SOU
2 stops17h 40mDelta
Thu 9/259:20 amSOU - SFO
2 stops18h 28mDelta
Deal found 8/16$938
This Gurufare deal was found by Cheapflights users on 8/18. 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 9/175:40 pmSFO - SOU
1 stop17h 50mAer Lingus
Wed 9/248:00 pmSOU - SFO
1 stop27h 55mAer Lingus
Deal found 8/18$943
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:40 pmSFO - SOU
1 stop17h 50mMultiple Airlines
Thu 10/99:40 amSOU - SFO
1 stop14h 15mMultiple Airlines
Deal found 8/18$953

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 August 18, 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

Tue 9/30

5:40 pm-8:40 am

1 stop31h 00m

Southampton Eastleigh

Tue 10/7

8:00 pm-9:24 pm

2 stops33h 24m

$906

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 11/24

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 9/30

1:45 pm-8:45 am

1 stop35h 00m

Southampton Eastleigh

Tue 10/7

9:20 am-11:45 am

1 stop34h 25m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/18

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Wed 12/3

8:40 am-11:50 am

1 stop35h 10m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 9/4

1:45 pm-8:45 am

1 stop35h 00m

Southampton Eastleigh

Sun 9/14

6:25 pm-11:45 am

1 stop25h 20m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 10/1

1:45 pm-5:00 pm

1 stop19h 15m

Southampton Eastleigh

Sun 10/19

9:20 am-11:45 am

1 stop34h 25m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Tue 11/18

1:55 pm-5:00 pm

1 stop19h 05m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Wed 11/19

1:55 pm-8:05 am

1 stop34h 10m

Southampton Eastleigh

Tue 12/2

5:30 pm-11:50 am

1 stop26h 20m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Thu 9/11

1:45 pm-5:00 pm

1 stop19h 15m

Southampton Eastleigh

Wed 9/24

5:35 pm-11:45 am

1 stop26h 10m

$924

San FranciscoSouthampton

SFO - SOU

SFOSOU

San Francisco

Mon 11/24

1:55 pm-8:10 am

1 stop34h 15m

Southampton Eastleigh

Wed 12/3

5:30 pm-11:50 am

1 stop26h 20m

$924

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 18 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, November is the cheapest month in which you can book a flight from Fremont to Portsmouth (average of $661). Flying from Fremont to Portsmouth in June is currently the most expensive (average of $1,097). 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 August 18, 2025.

When flying from Fremont to Portsmouth, 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 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 at noon when fares are most often at their lowest. Sunday afternoons 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 August 18, 2025.

The most flights from FR8 to P0R are scheduled on a Monday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (42 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 August 18, 2025.
Read reviews from past customers who have flown KLM and Aer Lingus 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.
KLM
7.8
Good
1,385 reviews

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Aer Lingus
7.2
Good
1,220 reviews
KLM
7.8
Good
1,385 reviews

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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 34h 15m. 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 Iberia (90%), Aeromexico (88%) and American Airlines (87%).

  • What are the cheapest flights from Fremont to Portsmouth?

    The cheapest flight price from Fremont to Portsmouth is $367. On average you can expect to pay $2,500. The most popular route, (San Francisco - Southampton Eastleigh), can usually be booked for $924.

  • 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, November is the cheapest month in which you can book a flight from Fremont to Portsmouth (average of $661). Flying from Fremont to Portsmouth in June is currently the most expensive (average of $1,097). 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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Alternative routes for Fremont to Portsmouth

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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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$195Average$802FlexibilityNo cancel feeOn-time62%
Scandinavian AirlinesCheapest$336Average$594FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$433Average$574FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$514Average$756FlexibilityNo cancel feeOn-time70%
DeltaCheapest$569Average$801FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$571Average$854FlexibilityNo cancel feeOn-time69%
IberiaCheapest$572Average$760FlexibilityNo cancel feeOn-time77%
FinnairCheapest$573Average$670FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$573Average$920FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$574Average$820FlexibilityNo cancel feeOn-time76%

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