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Cheap flights from Philadelphia to London from £769

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:20 - 08:35
PHL
-
SOU
14h 15m
2 stops
Multiple Airlines Logo
17:20 - 20:43
SOU
-
PHL
32h 23m
2 stops
£769Multiple Airlines
Wed, 9 Sep - Mon, 28 Sep
KLM Logo
13:20 - 08:45
PHL
-
SOU
14h 25m
2 stops
KLM Logo
17:20 - 17:14
SOU
-
PHL
28h 54m
2 stops
£776KLM
Tue, 25 Aug - Mon, 7 Sep
KLM Logo
13:58 - 08:35
PHL
-
SOU
13h 37m
2 stops
KLM Logo
09:05 - 00:57
SOU
-
PHL
20h 52m
2 stops
£777KLM
Wed, 6 May - Wed, 13 May
Aer Lingus Logo
18:50 - 19:30
PHL
-
SOU
19h 40m
1 stop
Aer Lingus Logo
09:20 - 18:55
SOU
-
PHL
14h 35m
1 stop
£782Aer Lingus
Wed, 9 Sep - Mon, 28 Sep
KLM Logo
13:20 - 08:45
PHL
-
SOU
14h 25m
2 stops
KLM Logo
17:20 - 17:14
SOU
-
PHL
28h 54m
2 stops
£792KLM
Tue, 25 Aug - Mon, 7 Sep
Multiple Airlines Logo
20:25 - 19:25
PHL
-
SOU
18h 00m
2 stops
Multiple Airlines Logo
09:20 - 18:55
SOU
-
PHL
14h 35m
1 stop
£794Multiple Airlines
Wed, 9 Sep - Mon, 28 Sep
Multiple Airlines Logo
20:25 - 19:30
PHL
-
SOU
18h 05m
1 stop
Multiple Airlines Logo
15:35 - 00:45
SOU
-
PHL
38h 10m
2 stops
£800Multiple Airlines
Wed, 6 May - Wed, 13 May
Delta Logo
06:35 - 08:35
PHL
-
SOU
21h 00m
2 stops
Delta Logo
09:05 - 22:09
SOU
-
PHL
18h 04m
2 stops
£815Delta
Thu, 7 May - Thu, 14 May
Aer Lingus Logo
09:12 - 19:30
PHL
-
SOU
29h 18m
2 stops
Aer Lingus Logo
20:00 - 18:55
SOU
-
PHL
27h 55m
1 stop
£839Aer Lingus
Tue, 25 Aug - Mon, 7 Sep
Aer Lingus Logo
20:25 - 19:30
PHL
-
SOU
18h 05m
1 stop
Aer Lingus Logo
20:00 - 18:55
SOU
-
PHL
27h 55m
1 stop
£839Aer Lingus
Tue, 25 Aug - Mon, 7 Sep

KLM flights from Philadelphia to Southampton

Our best KLM deals on Philadelphia to Southampton flight tickets
KLM
25 Aug
PHL13:20Philadelphia
14h 25m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
28h 54m
2 stops
PHL17:14Philadelphia
£776
KLM
6 May
PHL13:58Philadelphia
13h 37m
2 stops
SOU08:35Southampton Eastleigh
13 May
SOU09:05Southampton Eastleigh
20h 52m
2 stops
PHL00:57Philadelphia
£777
KLM
25 Aug
PHL13:20Philadelphia
14h 25m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
28h 54m
2 stops
PHL17:14Philadelphia
£792

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
9 Sept
PHL18:50Philadelphia
19h 40m
1 stop
SOU19:30Southampton Eastleigh
28 Sept
SOU09:20Southampton Eastleigh
14h 35m
1 stop
PHL18:55Philadelphia
£782
Aer Lingus
25 Aug
PHL09:12Philadelphia
29h 18m
2 stops
SOU19:30Southampton Eastleigh
7 Sept
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£838
Aer Lingus
25 Aug
PHL20:25Philadelphia
18h 05m
1 stop
SOU19:30Southampton Eastleigh
7 Sept
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£839

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 24 March 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

Wed 9/9

13:20-08:35

2 stops14h 15m

Southampton Eastleigh

Mon 28/9

17:20-20:43

2 stops32h 23m

£769

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

13:20-08:45

2 stops14h 25m

Southampton Eastleigh

Mon 7/9

17:20-17:14

2 stops28h 54m

£776

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 6/5

13:58-08:35

2 stops13h 37m

Southampton Eastleigh

Wed 13/5

09:05-00:57

2 stops20h 52m

£777

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 9/9

18:50-19:30

1 stop19h 40m

Southampton Eastleigh

Mon 28/9

09:20-18:55

1 stop14h 35m

£782

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

13:20-08:45

2 stops14h 25m

Southampton Eastleigh

Mon 7/9

17:20-17:14

2 stops28h 54m

£792
Fastest return journey

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 9/9

20:25-19:25

2 stops18h 00m

Southampton Eastleigh

Mon 28/9

09:20-18:55

1 stop14h 35m

£794

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 6/5

20:25-19:30

1 stop18h 05m

Southampton Eastleigh

Wed 13/5

15:35-00:45

2 stops38h 10m

£800

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 7/5

06:35-08:35

2 stops21h 00m

Southampton Eastleigh

Thu 14/5

09:05-22:09

2 stops18h 04m

£815

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

09:12-19:30

2 stops29h 18m

Southampton Eastleigh

Mon 7/9

20:00-18:55

1 stop27h 55m

£838

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

20:25-19:30

1 stop18h 05m

Southampton Eastleigh

Mon 7/9

20:00-18:55

1 stop27h 55m

£839

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

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 40% 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

14h 25m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 14h 25m
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 14h 25m.

  • 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.

An easier way to manage your Southampton trip

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