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Cheap flights from Portsmouth to San Jose, California from £679

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJC
28 Mar — 4 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to San Jose

Enter your travel dates to find the best prices.

Cheapest flights from Portsmouth to San Jose
Explore the most affordable flight options available from Portsmouth to San Jose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 February 2026.

Thu 9/409:05
SOU
-
SJC
2 stops20h 28m
KLM
Thu 16/407:20
SJC
-
SOU
2 stops25h 30m
KLM
Deal found 23/2£679
Sat 11/409:15
SOU
-
SJC
2 stops43h 09m
Virgin Atlantic
Sat 18/423:00
SJC
-
SOU
2 stops33h 50m
Virgin Atlantic
Deal found 25/2£686
Sat 11/409:10
SOU
-
SJC
2 stops44h 49m
Multiple Airlines
Sat 18/406:00
SJC
-
SOU
3 stops30h 15m
Multiple Airlines
Deal found 25/2£1,091

Find flight deals from Portsmouth to San Jose

Keep the following information in mind while searching for Portsmouth to San Jose flight deals. Data was last updated 26 February 2026.

Round-trip from

£679

Popular in

December

Cheapest in

January

Average price

£472
KLM
  • KLM
  • 9/4-16/4
  • 4 total stops
  • 45h 58m total
  • Portsmouth to San Jose
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£6 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to San Jose 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 26 February 2026.
Use the filters below to find and compare flights from Portsmouth to San Jose that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSan Jose

SOU - SJC

SOUSJC

Southampton Eastleigh

Thu 9/4

09:05-21:33

2 stops20h 28m

San Jose

Thu 16/4

07:20-16:50

2 stops25h 30m

£679

SouthamptonSan Jose

SOU - SJC

SOUSJC

Southampton Eastleigh

Sat 11/4

09:15-20:24

2 stops43h 09m

San Jose

Sat 18/4

23:00-16:50

2 stops33h 50m

£686

SouthamptonSan Jose

SOU - SJC

SOUSJC

Southampton Eastleigh

Sat 11/4

09:10-21:59

2 stops44h 49m

San Jose

Sat 18/4

06:00-20:15

3 stops30h 15m

£1,091

SouthamptonSan Jose

SOU - SJC

SOUSJC

Southampton Eastleigh

Sat 27/6

09:15-19:30

2 stops18h 15m

£1,220

Flights are sorted by cheapest return flights first.

Deals found on 25/2

Sorted by cheapest first

Best time to book a flight from Portsmouth to San Jose

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

What is the cheapest month to book a flight from Portsmouth to San Jose, California?

Currently, February is the cheapest month in which you can book a flight from Portsmouth to San Jose, California (average of £344). Flying from Portsmouth to San Jose, California in July is currently the most expensive (average of £439). 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.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to San Jose. 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 San Jose from Portsmouth?

    Most people fly into San Jose (SJC) if they book a flight to San Jose from Portsmouth. On average, San Jose has 0 inbound flights from Portsmouth per day from 5 airlines. San Jose is conveniently located just 2.9 mi from San Jose’s city center.

  • How long is the flight from Portsmouth to San Jose, California?

    A quick flight from Portsmouth to San Jose, California can take about 20h 28m. KLM provides one of the quickest options available for as low as £679. The distance between Portsmouth and San Jose, California is about 5350 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

  • How can I find direct flights from Portsmouth to San Jose?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to San Jose 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 San Jose, California?

    Currently, February is the cheapest month in which you can book a flight from Portsmouth to San Jose, California (average of £344). Flying from Portsmouth to San Jose, California in July is currently the most expensive (average of £439). 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 Portsmouth to San Jose

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Top 5 airlines flying from Portsmouth to San Jose

Discover the top 5 airlines that operate flights from Portsmouth to San Jose. 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 26 February 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£335Average£590FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£365Average£528FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£390Average£494FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£396Average£578FlexibilityNo cancel feeOn-time75%
Search KLM flights
Virgin AtlanticCheapest£397Average£487FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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 San Jose?

Deals for Portsmouth to San Jose flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to San Jose from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to San Jose from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Portsmouth to San Jose 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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