How long is the flight from Portsmouth to San Francisco?

Departing from Portsmouth to San Francisco will take you 14h 05m. The distance from Portsmouth to San Francisco is about 5349 mi. This flight may include one or multiple stops.

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.

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).

What are the cheapest flights from Portsmouth to San Francisco?

Looking at all options, your cheapest flight can be booked for £364. While the most popular route (Southampton Eastleigh - San Francisco) can be booked for £794 on average, our data indicates £1,893 when flying from Portsmouth to San Francisco.

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 New Zealand (87%), KLM (85%), Air France (85%).

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 11.8 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. 18 airlines have flights to San Francisco from Portsmouth on a regular basis.

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.

£546+ Flights from Portsmouth to San Francisco

Cheap flight deals from Portsmouth to San Francisco

Round-trip from	£608
One-way from	£546
Popular in	July
Cheapest in	February
Average price	£483

KLM
1/12-8/12
3 total stops
42h 55m total
Portsmouth to San Francisco

Search Deals

8/12
3 total stops
54h 59m total
Portsmouth to San Francisco

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£63 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Portsmouth to San Francisco

Enter your travel dates to find the best prices.

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 17 October 2025.

Mon 1/1218:05SOU - SFO

1 stop25h 45mKLM

Mon 8/1207:00SFO - SOU

2 stops17h 10mKLM

Deal found 17/10£608

Mon 1/1218:05SOU - SFO

1 stop25h 45mDelta

Sun 7/1200:30SFO - SOU

2 stops23h 40mDelta

Deal found 17/10£643

Sat 29/1109:30SOU - SFO

1 stop14h 05mAer Lingus

Sat 6/1217:20SFO - SOU

1 stop18h 20mAer Lingus

Deal found 15/10£787

Sat 29/1117:30SOU - SFO

1 stop26h 20mKLM

Sat 6/1208:15SFO - SOU

2 stops16h 35mKLM

Deal found 15/10£793

Sat 29/1117:30SOU - SFO

1 stop26h 20mDelta

Sat 6/1210:30SFO - SOU

2 stops22h 55mDelta

Deal found 15/10£794

Mon 1/1219:55SOU - SFO

3 stops33h 44mMultiple Airlines

Mon 8/1208:25SFO - SOU

3 stops27h 15mMultiple Airlines

Deal found 17/10£896

Sat 29/1109:30SOU - SFO

1 stop14h 05mBritish Airways

Sat 6/1220:40SFO - SOU

3 stops36h 55mBritish Airways

Deal found 15/10£969

Best flights from Portsmouth to San Francisco
Discover carefully curated flight deals from Portsmouth to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 October 2025.

Mon 1/1218:05SOU - SFO

1 stop25h 45mKLM

Mon 8/1207:00SFO - SOU

2 stops17h 10mKLM

Deal found 17/10£608

Mon 1/1218:05SOU - SFO

1 stop25h 45mDelta

Sun 7/1200:30SFO - SOU

2 stops23h 40mDelta

Deal found 17/10£643

Sat 29/1109:30SOU - SFO

1 stop14h 05mAer Lingus

Sat 6/1217:20SFO - SOU

1 stop18h 20mAer Lingus

Deal found 15/10£787

Sat 29/1117:30SOU - SFO

1 stop26h 20mKLM

Sat 6/1208:15SFO - SOU

2 stops16h 35mKLM

Deal found 15/10£793

Fri 27/308:40SOU - SFO

1 stop35h 10mDelta

Tue 31/313:45SFO - SOU

1 stop19h 15mDelta

Deal found 15/10£823

Last-minute flights from Portsmouth to San Francisco
Discover last-minute flight deals from Portsmouth to San Francisco. Data last updated 17 October 2025 and is based on user searches.

Sun 26/1009:30SOU - SFO

1 stop15h 05mBritish Airways

Sat 15/1120:40SFO - SOU

2 stops27h 30mBritish Airways

Deal found 16/10£1,091

Sat 29/1109:30SOU - SFO

1 stop14h 05mAer Lingus

Sat 6/1217:20SFO - SOU

1 stop18h 20mAer Lingus

Deal found 15/10£787

Sat 29/1117:30SOU - SFO

1 stop26h 20mKLM

Sat 6/1208:15SFO - SOU

2 stops16h 35mKLM

Deal found 15/10£793

Sat 29/1117:30SOU - SFO

1 stop26h 20mDelta

Sat 6/1210:30SFO - SOU

2 stops22h 55mDelta

Deal found 15/10£794

Sat 29/1109:30SOU - SFO

1 stop14h 05mBritish Airways

Sat 6/1220:40SFO - SOU

3 stops36h 55mBritish Airways

Deal found 15/10£969

Sat 29/1109:30SOU - SFO

2 stops33h 35mMultiple Airlines

Sat 6/1216:35SFO - SOU

3 stops32h 10mMultiple Airlines

Deal found 15/10£1,286

One-way flights from Portsmouth to San Francisco
Search for one-way flight options from Portsmouth to San Francisco. Find affordable one-way fares based on user searches. Data last updated 17 October 2025.

Mon 8/1208:30SOU - SFO

3 stops54h 59mMultiple Airlines

Deal found 15/10£546

Mon 3/1109:30SOU - SFO

1 stop14h 05mBritish Airways

Deal found 15/10£628

Sun 2/1116:05SOU - SFO

1 stop31h 30mBritish Airways

Deal found 15/10£634

Tue 4/1120:50SOU - SFO

2 stops26h 10mBritish Airways

Deal found 15/10£651

Wed 29/1008:55SOU - SFO

2 stops17h 50mBritish Airways

Deal found 15/10£660

Fri 31/1009:30SOU - SFO

1 stop14h 05mBritish Airways

Deal found 15/10£670

Thu 30/1016:05SOU - SFO

1 stop31h 30mBritish Airways

Deal found 15/10£676

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 1/12

18:05-11:50

1 stop25h 45m

San Francisco

Mon 8/12

07:00-08:10

2 stops17h 10m

£608

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 1/12

18:05-11:50

1 stop25h 45m

San Francisco

Sun 7/12

00:30-08:10

2 stops23h 40m

£643

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sat 29/11

09:30-15:35

1 stop14h 05m

San Francisco

Sat 6/12

17:20-19:40

1 stop18h 20m

£787

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sat 29/11

17:30-11:50

1 stop26h 20m

San Francisco

Sat 6/12

08:15-08:50

2 stops16h 35m

£793

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Fri 27/3

08:40-12:50

1 stop35h 10m

San Francisco

Tue 31/3

13:45-17:00

1 stop19h 15m

£823

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 8/12

08:30-07:29

3 stops54h 59m

£546

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Sun 2/11

16:05-15:35

1 stop31h 30m

£634

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Mon 3/11

18:10-18:45

3 stops32h 35m

£648

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Tue 4/11

14:35-18:45

3 stops36h 10m

£648

SouthamptonSan Francisco

SOU - SFO

SOUSFO

Southampton Eastleigh

Wed 5/11

08:30-18:45

2 stops18h 15m

£651

Flights are sorted by cheapest return flights first.

Deals found on 15/10

Showing 1-10 of 15 results

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.

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 Francisco

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

Currently, December is the cheapest month in which you can book a flight from Portsmouth to San Francisco (average of £337). Flying from Portsmouth to San Francisco in July is currently the most expensive (average of £456). 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 P0R to SFO?

When flying from Portsmouth to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 8% versus a flight in the afternoon.

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

Travellers seeking maximum savings on their Portsmouth to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to San Francisco

The most flights from P0R to SFO are scheduled on a Tuesday (37 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (31 on average).

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 11.8 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. 18 airlines have flights to San Francisco from Portsmouth on a regular basis.
How long is the flight from Portsmouth to San Francisco?
Departing from Portsmouth to San Francisco will take you 14h 05m. The distance from Portsmouth to San Francisco is about 5349 mi. This flight may include one or multiple stops.
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 New Zealand (87%), KLM (85%), Air France (85%).
What are the cheapest flights from Portsmouth to San Francisco?
Looking at all options, your cheapest flight can be booked for £364. While the most popular route (Southampton Eastleigh - San Francisco) can be booked for £794 on average, our data indicates £1,893 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.
What is the cheapest month to book a flight from Portsmouth to San Francisco?
Currently, December is the cheapest month in which you can book a flight from Portsmouth to San Francisco (average of £337). Flying from Portsmouth to San Francisco in July is currently the most expensive (average of £456). 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

Santa Cruz

Newark

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Bodega Bay

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Top 10 airlines flying from Portsmouth to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£238	Average£492	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	Cheapest£335	Average£494	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Aer Lingus	Cheapest£349	Average£556	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
TAP AIR PORTUGAL	Cheapest£351	Average£477	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	Cheapest£356	Average£523	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights
Brussels Airlines	Cheapest£357	Average£477	FlexibilityNo cancel fee	On-timeN/A	Search Brussels Airlines flights
SWISS	Cheapest£358	Average£439	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
United Airlines	Cheapest£368	Average£535	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£370	Average£469	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Virgin Atlantic	Cheapest£372	Average£497	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

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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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Cheap flights from Portsmouth to San Francisco from £546

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 8/12. 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 17 October 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 17 October 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 17 October 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 17 October 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

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?

How long is the flight from Portsmouth to San Francisco?

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?

Travelling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portsmouth to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to San Francisco

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 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 17 October 2025.