Question 1

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

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from Portsmouth to San Francisco (average of £538). Flying from Portsmouth to San Francisco 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.

Question 2

What is the cheapest day to fly from Portsmouth to San Francisco?

Accepted Answer

Travellers seeking maximum savings on their Portsmouth to San Francisco 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.

Question 3

Weekly flight availability from Portsmouth to San Francisco

Accepted Answer

The most flights from P0R to SFO 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).

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 6

What are the cheapest flights from Portsmouth to San Francisco?

Accepted Answer

Looking at all options, your cheapest flight can be booked for £400. While the most popular route (Southampton Eastleigh - San Francisco) can be booked for £507 on average our data indicates £1,937 when flying from Portsmouth to San Francisco.

Question 7

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

Accepted Answer

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

Question 8

What are the most popular airlines that fly from Portsmouth to San Francisco?

Accepted Answer

The most popular airlines flying from Portsmouth to San Francisco are American Airlines, Air Canada and Air France. Something to consider prior to booking your flight.

Question 9

How far in advance should I book a flight from Portsmouth to San Francisco?

Accepted Answer

To save on the cost of your flight from Portsmouth to San Francisco, book at least 61 days before your planned departure. Booking around this time can save you about 17% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £452 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £542.

Question 10

What is the cheapest month to fly from Portsmouth to San Francisco?

Accepted Answer

February is one of the best times of the year to fly to San Francisco from Portsmouth. Prices for February average £503 per person but you can even find prices for as low as £337. The most expensive prices can be found in the month of July. Opting for a February flight can save you 32% on your journey compared to booking in July

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

For a flight from Portsmouth to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 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. 17 airlines have flights to San Francisco from Portsmouth on a regular basis.

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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.

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Round-trip from	£576
Popular in	April
Cheapest in	February
Average price	£879

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£237	Average£487	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
TAP AIR PORTUGAL	Cheapest£348	Average£471	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	Cheapest£349	Average£578	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
SWISS	Cheapest£351	Average£408	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
United Airlines	Cheapest£358	Average£568	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Virgin Atlantic	Cheapest£361	Average£483	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Brussels Airlines	Cheapest£362	Average£485	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
British Airways	Cheapest£364	Average£504	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£369	Average£460	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£371	Average£458	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Cheap flights from Portsmouth to San Francisco 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.

Cheap flight deals from Portsmouth to San Francisco

Keep the following information in mind while searching for Portsmouth to San Francisco flight deals. Data was last updated 15 July 2025.

Round-trip from

Popular in

Cheapest in

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Find flight deals from Portsmouth to San Francisco

Cheapest flights from Portsmouth to San FranciscoExplore the most affordable flight options available from Portsmouth to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.

Explore the most affordable flight options available from Portsmouth to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portsmouth to San Francisco that are best for you.

Best time to book a flight from Portsmouth to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Portsmouth with our price prediction graph.

Cheapflights Insights

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

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

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

Find hourly flight availability from Portsmouth to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 July 2025.

What is the cheapest day to fly from Portsmouth to San Francisco?

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

Weekly flight availability from Portsmouth to San Francisco

Reviews of airlines servicing San Francisco

Check out reviews from past customers who have flown with Delta, KLM, andBritish Airways from Portsmouth to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

What are the cheapest flights from Portsmouth to San Francisco?

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

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

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

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

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Alternative routes for Portsmouth to San Francisco

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Top 10 airlines flying from Portsmouth to San Francisco

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

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

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

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

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