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Cheap flights from Philadelphia to London from £433

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 27/5. 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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Find the cheapest flights from Philadelphia to London

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
19:29 - 16:50
PHL
-
SOU
16h 21m
2 stops
Delta Logo
09:05 - 20:07
SOU
-
PHL
16h 02m
2 stops
£761Delta
Sun, 27 Sep - Wed, 7 Oct
Delta Logo
09:40 - 08:45
PHL
-
SOU
18h 05m
2 stops
Delta Logo
09:15 - 19:58
SOU
-
PHL
15h 43m
2 stops
£784Delta
Sun, 16 Aug - Fri, 28 Aug
Delta Logo
17:21 - 08:45
PHL
-
SOU
34h 24m
2 stops
Delta Logo
09:15 - 19:58
SOU
-
PHL
15h 43m
2 stops
£789Delta
Sat, 15 Aug - Fri, 28 Aug
Delta Logo
11:45 - 08:35
PHL
-
SOU
15h 50m
2 stops
Delta Logo
17:20 - 16:15
SOU
-
PHL
27h 55m
2 stops
£798Delta
Sun, 27 Sep - Sun, 4 Oct
Delta Logo
09:40 - 08:45
PHL
-
SOU
18h 05m
2 stops
Delta Logo
18:05 - 16:17
SOU
-
PHL
27h 12m
2 stops
£806Delta
Sun, 16 Aug - Mon, 24 Aug
Delta Logo
18:27 - 08:45
PHL
-
SOU
33h 18m
2 stops
Delta Logo
09:15 - 20:33
SOU
-
PHL
16h 18m
2 stops
£811Delta
Sat, 15 Aug - Tue, 25 Aug
Delta Logo
09:40 - 08:45
PHL
-
SOU
18h 05m
2 stops
Delta Logo
09:05 - 22:37
SOU
-
PHL
18h 32m
2 stops
£821Delta
Tue, 25 Aug - Mon, 7 Sep
Delta Logo
09:40 - 08:45
PHL
-
SOU
18h 05m
2 stops
Delta Logo
18:05 - 16:17
SOU
-
PHL
27h 12m
2 stops
£843Delta
Thu, 20 Aug - Mon, 24 Aug
Delta Logo
18:27 - 08:45
PHL
-
SOU
33h 18m
2 stops
Delta Logo
17:30 - 16:17
SOU
-
PHL
27h 47m
2 stops
£848Delta
Sat, 15 Aug - Sun, 23 Aug
Multiple Airlines Logo
20:25 - 11:05
PHL
-
SOU
33h 40m
2 stops
Multiple Airlines Logo
20:00 - 18:55
SOU
-
PHL
27h 55m
1 stop
£863Multiple Airlines
Tue, 2 Jun - Tue, 9 Jun

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
25 Aug
PHL08:28Philadelphia
30h 02m
2 stops
SOU19:30Southampton Eastleigh
7 Sept
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£895
Aer Lingus
25 Aug
PHL08:28Philadelphia
30h 02m
2 stops
SOU19:30Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
30h 35m
1 stop
PHL18:55Philadelphia
£896
Aer Lingus
2 Jun
PHL20:25Philadelphia
18h 05m
1 stop
SOU19:30Southampton Eastleigh
9 Jun
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£930

Delta flights from Philadelphia to Southampton

Our best Delta deals on Philadelphia to Southampton flight tickets
Delta
27 Sept
PHL19:29Philadelphia
16h 21m
2 stops
SOU16:50Southampton Eastleigh
7 Oct
SOU09:05Southampton Eastleigh
16h 02m
2 stops
PHL20:07Philadelphia
£761
Delta
16 Aug
PHL09:40Philadelphia
18h 05m
2 stops
SOU08:45Southampton Eastleigh
28 Aug
SOU09:15Southampton Eastleigh
15h 43m
2 stops
PHL19:58Philadelphia
£784
Delta
15 Aug
PHL17:21Philadelphia
34h 24m
2 stops
SOU08:45Southampton Eastleigh
28 Aug
SOU09:15Southampton Eastleigh
15h 43m
2 stops
PHL19:58Philadelphia
£789

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 20 April 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
Fastest return journey

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 27/9

19:29-16:50

2 stops16h 21m

Southampton Eastleigh

Wed 7/10

09:05-20:07

2 stops16h 02m

£761

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 16/8

09:40-08:45

2 stops18h 05m

Southampton Eastleigh

Fri 28/8

09:15-19:58

2 stops15h 43m

£784

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 15/8

17:21-08:45

2 stops34h 24m

Southampton Eastleigh

Fri 28/8

09:15-19:58

2 stops15h 43m

£789

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 27/9

11:45-08:35

2 stops15h 50m

Southampton Eastleigh

Sun 4/10

17:20-16:15

2 stops27h 55m

£798

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 16/8

09:40-08:45

2 stops18h 05m

Southampton Eastleigh

Mon 24/8

18:05-16:17

2 stops27h 12m

£806

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 15/8

18:27-08:45

2 stops33h 18m

Southampton Eastleigh

Tue 25/8

09:15-20:33

2 stops16h 18m

£811

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 25/8

09:40-08:45

2 stops18h 05m

Southampton Eastleigh

Mon 7/9

09:05-22:37

2 stops18h 32m

£821

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 20/8

09:40-08:45

2 stops18h 05m

Southampton Eastleigh

Mon 24/8

18:05-16:17

2 stops27h 12m

£843

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 15/8

18:27-08:45

2 stops33h 18m

Southampton Eastleigh

Sun 23/8

17:30-16:17

2 stops27h 47m

£848

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 2/6

20:25-11:05

2 stops33h 40m

Southampton Eastleigh

Tue 9/6

20:00-18:55

1 stop27h 55m

£863

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 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?

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 39% 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 57m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 14h 57m
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 14h 57m.

  • 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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