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Cheap flights from Philadelphia to London from £295

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 10/9. 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
1 adult, Economy, 0 bags
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Find the cheapest flights from Philadelphia to London

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
20:25 - 16:50
PHL
-
SOU
15h 25m
1 stop
Aer Lingus Logo
09:20 - 18:55
SOU
-
PHL
14h 35m
1 stop
£704Aer Lingus
Mon, 17 Aug - Mon, 31 Aug
KLM Logo
17:20 - 17:35
PHL
-
SOU
19h 15m
2 stops
KLM Logo
17:20 - 16:17
SOU
-
PHL
27h 57m
2 stops
£747KLM
Tue, 25 Aug - Mon, 7 Sep
Delta Logo
16:45 - 17:00
PHL
-
SOU
19h 15m
2 stops
Delta Logo
17:30 - 19:25
SOU
-
PHL
30h 55m
2 stops
£769Delta
Tue, 15 Dec - Wed, 23 Dec
Multiple Airlines Logo
20:25 - 16:50
PHL
-
SOU
15h 25m
1 stop
Multiple Airlines Logo
19:20 - 18:55
SOU
-
PHL
28h 35m
2 stops
£784Multiple Airlines
Mon, 17 Aug - Mon, 31 Aug
Delta Logo
06:05 - 08:45
PHL
-
SOU
21h 40m
2 stops
Delta Logo
09:15 - 23:56
SOU
-
PHL
19h 41m
2 stops
£807Delta
Thu, 6 Aug - Thu, 13 Aug
KLM Logo
17:29 - 17:35
PHL
-
SOU
19h 06m
2 stops
KLM Logo
17:30 - 16:49
SOU
-
PHL
28h 19m
2 stops
£814KLM
Wed, 5 Aug - Sun, 16 Aug
Aer Lingus Logo
13:53 - 08:40
PHL
-
SOU
13h 47m
2 stops
Aer Lingus Logo
09:20 - 18:55
SOU
-
PHL
14h 35m
1 stop
£816Aer Lingus
Fri, 7 Aug - Fri, 14 Aug
Aer Lingus Logo
13:53 - 08:40
PHL
-
SOU
13h 47m
2 stops
Aer Lingus Logo
09:20 - 09:20
SOU
-
PHL
29h 00m
2 stops
£828Aer Lingus
Fri, 7 Aug - Fri, 14 Aug
Delta Logo
09:42 - 17:00
PHL
-
SOU
26h 18m
2 stops
Delta Logo
17:30 - 23:02
SOU
-
PHL
34h 32m
2 stops
£837Delta
Tue, 15 Dec - Sat, 26 Dec
Multiple Airlines Logo
17:30 - 08:40
PHL
-
SOU
10h 10m
1 stop
Multiple Airlines Logo
06:50 - 16:00
SOU
-
PHL
14h 10m
2 stops
£839Multiple Airlines
Tue, 15 Dec - Tue, 22 Dec

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Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
17 Aug
PHL20:25Philadelphia
15h 25m
1 stop
SOU16:50Southampton Eastleigh
31 Aug
SOU09:20Southampton Eastleigh
14h 35m
1 stop
PHL18:55Philadelphia
£704
Aer Lingus
7 Aug
PHL13:53Philadelphia
13h 47m
2 stops
SOU08:40Southampton Eastleigh
14 Aug
SOU09:20Southampton Eastleigh
14h 35m
1 stop
PHL18:55Philadelphia
£816
Aer Lingus
7 Aug
PHL13:53Philadelphia
13h 47m
2 stops
SOU08:40Southampton Eastleigh
14 Aug
SOU09:20Southampton Eastleigh
29h 00m
2 stops
PHL09:20Philadelphia
£828

KLM flights from Philadelphia to Southampton

Our best KLM deals on Philadelphia to Southampton flight tickets
KLM
25 Aug
PHL17:20Philadelphia
19h 15m
2 stops
SOU17:35Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
27h 57m
2 stops
PHL16:17Philadelphia
£747
KLM
5 Aug
PHL17:29Philadelphia
19h 06m
2 stops
SOU17:35Southampton Eastleigh
16 Aug
SOU17:30Southampton Eastleigh
28h 19m
2 stops
PHL16:49Philadelphia
£814

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 14 July 2026.
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

Cheapest return flight

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 17/8

20:25-16:50

1 stop15h 25m

Southampton Eastleigh

Mon 31/8

09:20-18:55

1 stop14h 35m

£704

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

17:20-17:35

2 stops19h 15m

Southampton Eastleigh

Mon 7/9

17:20-16:17

2 stops27h 57m

£747

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 15/12

16:45-17:00

2 stops19h 15m

Southampton Eastleigh

Wed 23/12

17:30-19:25

2 stops30h 55m

£769

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 17/8

20:25-16:50

1 stop15h 25m

Southampton Eastleigh

Mon 31/8

19:20-18:55

2 stops28h 35m

£784

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 6/8

06:05-08:45

2 stops21h 40m

Southampton Eastleigh

Thu 13/8

09:15-23:56

2 stops19h 41m

£807

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 5/8

17:29-17:35

2 stops19h 06m

Southampton Eastleigh

Sun 16/8

17:30-16:49

2 stops28h 19m

£814

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 7/8

13:53-08:40

2 stops13h 47m

Southampton Eastleigh

Fri 14/8

09:20-18:55

1 stop14h 35m

£816

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 7/8

13:53-08:40

2 stops13h 47m

Southampton Eastleigh

Fri 14/8

09:20-09:20

2 stops29h 00m

£828

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 15/12

09:42-17:00

2 stops26h 18m

Southampton Eastleigh

Sat 26/12

17:30-23:02

2 stops34h 32m

£837
Fastest return journey

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 15/12

17:30-08:40

1 stop10h 10m

Southampton Eastleigh

Tue 22/12

06:50-16:00

2 stops14h 10m

£839

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Delta and Aer Lingus are the most popular carriers operating from Philadelphia to Southampton Eastleigh

Which airlines fly to Southampton?

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to Southampton from Philadelphia according to our data. Virgin Atlantic is the first choice among our users, with 37% 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

Fastest flight time

10h 10m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 10h 10m
There are no direct flights from Philadelphia to Southampton. There are no popular flight routes from Philadelphia to Southampton.
Search flight deals

Frequently asked questions about flying from Philadelphia to Southampton

  • 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 10h 10m.

  • 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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