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Cheap flights from Portsmouth to San Francisco

LHR — SFO
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Portsmouth to San Francisco

Popular in

December

Cheapest in

February

Average price

£504
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in October 2026
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Cheapflights Insights

Everything you need to know about your flight from Portsmouth to San Francisco

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to San Francisco as you normally would.

Related info for your journey

  • What airport do you fly into for flights to San Francisco from Portsmouth?

    For a flight from Portsmouth to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.0 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 0 inbound flights from Portsmouth per day. 19 airlines have flights to San Francisco from Portsmouth on a regular basis.

  • What are the most reliable airlines from Portsmouth to San Francisco?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portsmouth to San Francisco on time: Air Canada (77%), Austrian Airlines (77%), United Airlines (77%).

  • What are the cheapest flights from Portsmouth to San Francisco?

    Looking at all options, your cheapest flight can be booked for £361. While the most popular route (Southampton Eastleigh - San Francisco) can be booked for £594 on average, our data indicates £1,075 when flying from Portsmouth to San Francisco.

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

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

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

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

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

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

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Santa Cruz
Roseville
Newark
Sunnyvale
Bodega Bay

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portsmouth to San Francisco

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Top 10 airlines flying from Portsmouth to San Francisco

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£339Average£663FlexibilityNo cancel feeOn-timeN/A
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SWISSCheapest£352Average£536FlexibilityNo cancel feeOn-time79%
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TAP AIR PORTUGALCheapest£362Average£483FlexibilityNo cancel feeOn-timeN/A
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Alaska AirlinesCheapest£364Average£452FlexibilityNo cancel feeOn-time75%
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Virgin AtlanticCheapest£371Average£570FlexibilityNo cancel feeOn-time72%
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Brussels AirlinesCheapest£374Average£505FlexibilityNo cancel feeOn-timeN/A
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LufthansaCheapest£376Average£545FlexibilityNo cancel feeOn-time76%
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Austrian AirlinesCheapest£377Average£508FlexibilityNo cancel feeOn-time78%
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Air CanadaCheapest£380Average£605FlexibilityNo cancel feeOn-time67%
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British AirwaysCheapest£384Average£548FlexibilityNo cancel feeOn-time70%
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Fly with Cheapflights

How does Cheapflights help users find flights from Portsmouth to San Francisco?

Cheapflights makes it easy to find Portsmouth to San Francisco 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 San Francisco?

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 San Francisco from Portsmouth.

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

Need flexible booking options for your flight to San Francisco from Portsmouth? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from Portsmouth to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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