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Cheap flights from Philadelphia to London from £492

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 5/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
10:30 - 08:25PHL-SOU
16h 55m2 stops
Delta Logo
09:25 - 23:13SOU-PHL
18h 48m2 stops
£579Delta
Find Deal
Wed, 14 Jan - Wed, 21 Jan
Delta Logo
12:22 - 17:00PHL-SOU
23h 38m2 stops
Delta Logo
08:40 - 22:47SOU-PHL
19h 07m2 stops
£611Delta
Find Deal
Fri, 5 Dec - Tue, 9 Dec
Delta Logo
12:11 - 08:45PHL-SOU
15h 34m2 stops
Delta Logo
09:25 - 22:50SOU-PHL
18h 25m2 stops
£617Delta
Find Deal
Fri, 16 Jan - Tue, 20 Jan
Delta Logo
11:46 - 08:50PHL-SOU
16h 04m2 stops
Delta Logo
08:40 - 23:10SOU-PHL
19h 30m2 stops
£711Delta
Find Deal
Fri, 5 Dec - Tue, 9 Dec
Aer Lingus Logo
20:30 - 16:35PHL-SOU
15h 05m1 stop
Aer Lingus Logo
09:10 - 19:00SOU-PHL
14h 50m1 stop
£728Aer Lingus
Find Deal
Fri, 8 May - Fri, 15 May
Delta Logo
12:41 - 08:25PHL-SOU
14h 44m2 stops
Delta Logo
09:25 - 20:40SOU-PHL
16h 15m2 stops
£751Delta
Find Deal
Thu, 15 Jan - Wed, 21 Jan
Aer Lingus Logo
10:00 - 08:40PHL-SOU
17h 40m2 stops
Aer Lingus Logo
09:10 - 19:00SOU-PHL
14h 50m1 stop
£782Aer Lingus
Find Deal
Fri, 8 May - Fri, 15 May
Aer Lingus Logo
18:45 - 16:35PHL-SOU
16h 50m2 stops
Aer Lingus Logo
09:10 - 19:30SOU-PHL
15h 20m2 stops
£798Aer Lingus
Find Deal
Fri, 8 May - Fri, 15 May
Aer Lingus Logo
20:25 - 08:40PHL-SOU
31h 15m2 stops
Aer Lingus Logo
09:10 - 19:00SOU-PHL
14h 50m1 stop
£840Aer Lingus
Find Deal
Sat, 16 May - Sun, 24 May
Aer Lingus Logo
20:25 - 08:40PHL-SOU
31h 15m2 stops
Aer Lingus Logo
09:10 - 19:30SOU-PHL
15h 20m2 stops
£843Aer Lingus
Find Deal
Sat, 16 May - Sun, 24 May

Delta flights from Philadelphia to Southampton

Our best Delta deals on Philadelphia to Southampton flight tickets
Delta
14 Jan
PHL10:30Philadelphia
16h 55m
2 stops
SOU08:25Southampton Eastleigh
21 Jan
SOU09:25Southampton Eastleigh
18h 48m
2 stops
PHL23:13Philadelphia
£579
Find similar
Delta
5 Dec
PHL12:22Philadelphia
23h 38m
2 stops
SOU17:00Southampton Eastleigh
9 Dec
SOU08:40Southampton Eastleigh
19h 07m
2 stops
PHL22:47Philadelphia
£611
Find similar
Delta
16 Jan
PHL12:11Philadelphia
15h 34m
2 stops
SOU08:45Southampton Eastleigh
20 Jan
SOU09:25Southampton Eastleigh
18h 25m
2 stops
PHL22:50Philadelphia
£617
Find similar

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
8 May
PHL20:30Philadelphia
15h 05m
1 stop
SOU16:35Southampton Eastleigh
15 May
SOU09:10Southampton Eastleigh
14h 50m
1 stop
PHL19:00Philadelphia
£728
Find similar
Aer Lingus
8 May
PHL10:00Philadelphia
17h 40m
2 stops
SOU08:40Southampton Eastleigh
15 May
SOU09:10Southampton Eastleigh
14h 50m
1 stop
PHL19:00Philadelphia
£782
Find similar
Aer Lingus
8 May
PHL18:45Philadelphia
16h 50m
2 stops
SOU16:35Southampton Eastleigh
15 May
SOU09:10Southampton Eastleigh
15h 20m
2 stops
PHL19:30Philadelphia
£798
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Philadelphia to Southampton 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, momondo users made 279,928 searches. Data last updated 19 November 2025.
Use the filters below to find and compare flights from Philadelphia to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 14/1

10:30-08:25

2 stops16h 55m

Southampton Eastleigh

Wed 21/1

09:25-23:13

2 stops18h 48m

£579

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 5/12

12:22-17:00

2 stops23h 38m

Southampton Eastleigh

Tue 9/12

08:40-22:47

2 stops19h 07m

£611

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 16/1

12:11-08:45

2 stops15h 34m

Southampton Eastleigh

Tue 20/1

09:25-22:50

2 stops18h 25m

£617

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 5/12

11:46-08:50

2 stops16h 04m

Southampton Eastleigh

Tue 9/12

08:40-23:10

2 stops19h 30m

£711

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 8/5

20:30-16:35

1 stop15h 05m

Southampton Eastleigh

Fri 15/5

09:10-19:00

1 stop14h 50m

£728

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 15/1

12:41-08:25

2 stops14h 44m

Southampton Eastleigh

Wed 21/1

09:25-20:40

2 stops16h 15m

£751

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 8/5

10:00-08:40

2 stops17h 40m

Southampton Eastleigh

Fri 15/5

09:10-19:00

1 stop14h 50m

£782

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 8/5

18:45-16:35

2 stops16h 50m

Southampton Eastleigh

Fri 15/5

09:10-19:30

2 stops15h 20m

£798

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 16/5

20:25-08:40

2 stops31h 15m

Southampton Eastleigh

Sun 24/5

09:10-19:00

1 stop14h 50m

£840

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 16/5

20:25-08:40

2 stops31h 15m

Southampton Eastleigh

Sun 24/5

09:10-19:30

2 stops15h 20m

£843

Flights are sorted by cheapest return flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Philadelphia to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Philadelphia to Southampton Eastleigh?

Aer Lingus is the most popular carrier operating from Philadelphia to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to Southampton from Philadelphia according to our data. British Airways is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 13 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

When to book flights from Philadelphia to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Philadelphia to Southampton (PHL to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Southampton

Direct flights

None
There are no direct flights from Philadelphia to Southampton. There are no popular flight routes from Philadelphia to Southampton.
Search flight deals

  • How far is Philadelphia to Southampton Eastleigh by plane?

    A flight from Philadelphia to Southampton Eastleigh will travel around 3499.1 mi. By plane, this route typically takes 9h 40m.

  • When did momondo last update prices for flights from Philadelphia Airport to Southampton Eastleigh Airport?

    Prices for flights from Philadelphia Airport to Southampton Eastleigh Airport are updated daily.

  • How old do you have to be to fly from Philadelphia Airport to Southampton Eastleigh Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

    The travel and health documents required for your trip to Southampton Eastleigh Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Southampton Eastleigh Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to Southampton?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Southampton. momondo saves you time and could save you money on your trip.

Can I find flights from Philadelphia to Southampton with flexible booking policies on momondo?

momondo does allow users to show only those flights to Southampton from Philadelphia which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Philadelphia to Southampton?

Once you have performed a search for Philadelphia to Southampton flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Philadelphia to Southampton right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Philadelphia to Southampton flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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