In terms of precipitation, rainfall in Philadelphia ranges from 69.0 - 112.0 inches per month. July is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Philadelphia when rainfall is around 69.0 mm.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

What is the cheapest time of day to fly from SOU to PHL?

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

Can I find deals for flights from Southampton to Philadelphia that include hotel bookings?

Yes. In addition to deals on Southampton to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Southampton to Philadelphia?

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

Can I find deals for business class flights from Southampton to Philadelphia?

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

£782+ Cheap Flights from Southampton to Philadelphia

Cheap flight deals from Southampton to Philadelphia

Enter your travel dates to find the best prices.

One-way

One-way flights from Southampton to Philadelphia
Search for one-way flight options from Southampton to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.

Sat 17/1017:20 -

1 stop30h 35m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 2/9£782

Tue 6/1020:00 -

1 stop20h 50m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 2/9£796

Sat 17/1014:55 -

2 stops30h 45m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 2/9£915

Mon 21/920:00 -

1 stop20h 55m

Wed 31/1200:00 -

Nonstop0h 00m

Deal found 1/9£997

Find flight deals from Southampton to Philadelphia

Popular in	August
Cheapest in	January
Average price	£631

Highest demand for flights based on searches. 11% potential increase in price (£63 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonPhiladelphia

SOU Southampton Eastleigh - PHL Philadelphia

SOUPHL

Southampton Eastleigh

Sat 17/10

17:20-18:55

1 stop30h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£782

SouthamptonPhiladelphia

SOU Southampton Eastleigh - PHL Philadelphia

SOUPHL

Southampton Eastleigh

Tue 6/10

19:55-16:40

2 stops25h 45m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£825

SouthamptonPhiladelphia

SOU Southampton Eastleigh - PHL Philadelphia

SOUPHL

Southampton Eastleigh

Sat 17/10

14:55-16:40

2 stops30h 45m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£915

Fastest return journey

SouthamptonPhiladelphia

SOU Southampton Eastleigh - PHL Philadelphia

SOUPHL

Southampton Eastleigh

Mon 21/9

20:00-11:55

1 stop20h 55m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£997

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Sorted by cheapest first

Best time to book a flight from Southampton to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Southampton with our price prediction graph.

SOU-PHL

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.

Related info for your journey

Can I find deals for flights from Southampton to Philadelphia that include hotel bookings?
Yes. In addition to deals on Southampton to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Southampton to Philadelphia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Philadelphia.
Can I find deals for business class flights from Southampton to Philadelphia?
Yes. Cheapflights offers flight deals from Southampton to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

King of Prussia

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to Pennsylvania

Flights by cabin class

Other flight options

Other flights from Southampton

Philadelphia flight routes

Popular flights

Alternative routes for Southampton to Philadelphia

Heathrow to John F Kennedy Intl flights

Heathrow to Newark flights

Gatwick to John F Kennedy Intl flights

Heathrow to LaGuardia flights

Stansted to John F Kennedy Intl flights

London City to John F Kennedy Intl flights

Gatwick to Newark flights

Gatwick to LaGuardia flights

Luton to John F Kennedy Intl flights

Manchester to John F Kennedy Intl flights

Luton to Newark flights

London City to Newark flights

Stansted to Newark flights

Manchester to Newark flights

Manchester to LaGuardia flights

Heathrow to Dulles Intl flights

Edinburgh to John F Kennedy Intl flights

Edinburgh to Newark flights

Heathrow to Philadelphia flights

Gatwick to Dulles Intl flights

London City to Dulles Intl flights

Stansted to Dulles Intl flights

Heathrow to Reagan-National flights

Stansted to LaGuardia flights

London City to LaGuardia flights

Edinburgh to LaGuardia flights

Luton to Dulles Intl flights

Birmingham to John F Kennedy Intl flights

Gatwick to Reagan-National flights

Birmingham to Newark flights

Luton to LaGuardia flights

London City to Philadelphia flights

Gatwick to Philadelphia flights

Birmingham to LaGuardia flights

Heathrow to Pittsburgh flights

Southend to John F Kennedy Intl flights

Manchester to Dulles Intl flights

Newcastle upon Tyne to John F Kennedy Intl flights

Stansted to Philadelphia flights

Luton to Philadelphia flights

Newcastle upon Tyne to Newark flights

Newcastle upon Tyne to LaGuardia flights

Manchester to Reagan-National flights

Bristol to John F Kennedy Intl flights

Southampton to John F Kennedy Intl flights

London City to Reagan-National flights

Southampton to Newark flights

Leeds to John F Kennedy Intl flights

Darlington to John F Kennedy Intl flights

Edinburgh to Philadelphia flights

Fly with Cheapflights

How does Cheapflights help users find flights from Southampton to Philadelphia?

Cheapflights makes it easy to find Southampton to Philadelphia 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 Southampton to Philadelphia?

Millions of users choose and trust Cheapflights to book the best flight deals from Southampton to Philadelphia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Southampton to Philadelphia with no change fees?

Certainly. Search results for flights to Philadelphia from Southampton 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 Southampton to Philadelphia become cheaper?

Yes! Start tracking prices for Southampton to Philadelphia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Southampton to Philadelphia from £782

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Philadelphia

One-way flights from Southampton to PhiladelphiaSearch for one-way flight options from Southampton to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.

Search for one-way flight options from Southampton to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.

Find flight deals from Southampton to Philadelphia

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Philadelphia that are best for you.

Best time to book a flight from Southampton to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Southampton with our price prediction graph.

Related info for your journey

Can I find deals for flights from Southampton to Philadelphia that include hotel bookings?

How can I find direct flights from Southampton to Philadelphia?

Can I find deals for business class flights from Southampton to Philadelphia?

Travelling to a place near Philadelphia?

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 Southampton to Philadelphia

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

Complete your trip

Complete your trip to Philadelphia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Pennsylvania

Book a non-stop flight to one of these other cities located in Pennsylvania.

Search flights from Southampton to Philadelphia by cabin class

Find flights from Southampton to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Southampton and Philadelphia flights

Browse other Southampton and Philadelphia flight options. Last updated on 4 September 2026.

Other flights from Southampton

Browse through other flights departing from Southampton. Flights are based on user searches made on Cheapflights and were last updated on 4 September 2026.

Other flights to Philadelphia

Explore flights to Philadelphia departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 4 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

How does Cheapflights help users find flights from Southampton to Philadelphia?

Why should you use Cheapflights to find cheap flight tickets from Southampton to Philadelphia?

Can Cheapflights find flights from Southampton to Philadelphia with no change fees?

Can Cheapflights notify me if prices for flights from Southampton to Philadelphia become cheaper?

100% Free

Book with Flexibility

Travel Smart

One-way flights from Southampton to Philadelphia
Search for one-way flight options from Southampton to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 4 September 2026.