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Cheap flights from Philadelphia to London from £408

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 24/2. 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
17:33 - 08:20
PHL
-
SOU
34h 47m
2 stops
Delta Logo
08:50 - 09:22
SOU
-
PHL
28h 32m
2 stops
£570Delta
Sun, 15 Mar - Tue, 24 Mar
Delta Logo
20:29 - 17:25
PHL
-
SOU
40h 56m
2 stops
Delta Logo
08:50 - 09:22
SOU
-
PHL
28h 32m
2 stops
£575Delta
Tue, 17 Mar - Tue, 24 Mar
Delta Logo
18:54 - 16:50
PHL
-
SOU
16h 56m
2 stops
Delta Logo
17:20 - 16:33
SOU
-
PHL
28h 13m
2 stops
£581Delta
Tue, 31 Mar - Wed, 8 Apr
Delta Logo
12:26 - 08:35
PHL
-
SOU
15h 09m
2 stops
Delta Logo
09:05 - 21:23
SOU
-
PHL
17h 18m
2 stops
£581Delta
Mon, 30 Mar - Wed, 8 Apr
Delta Logo
06:00 - 08:20
PHL
-
SOU
22h 20m
2 stops
Delta Logo
08:50 - 09:22
SOU
-
PHL
28h 32m
2 stops
£608Delta
Thu, 19 Mar - Tue, 24 Mar
Delta Logo
06:00 - 08:35
PHL
-
SOU
21h 35m
2 stops
Delta Logo
17:20 - 16:33
SOU
-
PHL
28h 13m
2 stops
£618Delta
Thu, 2 Apr - Tue, 7 Apr
Delta Logo
12:26 - 08:35
PHL
-
SOU
15h 09m
2 stops
Delta Logo
17:20 - 16:53
SOU
-
PHL
28h 33m
2 stops
£619Delta
Mon, 30 Mar - Sun, 5 Apr
Air Europa Logo
12:20 - 08:35
PHL
-
SOU
15h 15m
2 stops
Air Europa Logo
17:20 - 16:17
SOU
-
PHL
27h 57m
2 stops
£655Air Europa
Sun, 26 Apr - Mon, 11 May
Aer Lingus Logo
08:25 - 08:40
PHL
-
SOU
19h 15m
2 stops
Aer Lingus Logo
20:00 - 18:55
SOU
-
PHL
27h 55m
1 stop
£663Aer Lingus
Sun, 26 Apr - Mon, 11 May
Aer Lingus Logo
20:25 - 16:35
PHL
-
SOU
15h 10m
1 stop
Aer Lingus Logo
20:00 - 18:55
SOU
-
PHL
27h 55m
1 stop
£669Aer Lingus
Sun, 26 Apr - Mon, 11 May

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
26 Apr
PHL08:25Philadelphia
19h 15m
2 stops
SOU08:40Southampton Eastleigh
11 May
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£663
Aer Lingus
26 Apr
PHL20:25Philadelphia
15h 10m
1 stop
SOU16:35Southampton Eastleigh
11 May
SOU20:00Southampton Eastleigh
27h 55m
1 stop
PHL18:55Philadelphia
£669
Aer Lingus
7 Mar
PHL20:50Philadelphia
30h 55m
1 stop
SOU08:45Southampton Eastleigh
14 Mar
SOU09:30Southampton Eastleigh
31h 25m
2 stops
PHL12:55Philadelphia
£701

British Airways flights from Philadelphia to Southampton

Our best British Airways deals on Philadelphia to Southampton flight tickets
British Airways
18 Mar
PHL20:40Philadelphia
15h 40m
2 stops
SOU16:20Southampton Eastleigh
22 Mar
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL17:00Philadelphia
£2,991
British Airways
1 Apr
PHL19:35Philadelphia
14h 10m
1 stop
SOU14:45Southampton Eastleigh
8 Apr
SOU09:10Southampton Eastleigh
14h 45m
1 stop
PHL18:55Philadelphia
£2,994
British Airways
11 Apr
PHL18:45Philadelphia
14h 45m
2 stops
SOU14:30Southampton Eastleigh
23 Apr
SOU09:10Southampton Eastleigh
14h 45m
1 stop
PHL18:55Philadelphia
£3,003

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 22 January 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

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 15/3

17:33-08:20

2 stops34h 47m

Southampton Eastleigh

Tue 24/3

08:50-09:22

2 stops28h 32m

£570

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 17/3

20:29-17:25

2 stops40h 56m

Southampton Eastleigh

Tue 24/3

08:50-09:22

2 stops28h 32m

£575

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 31/3

18:54-16:50

2 stops16h 56m

Southampton Eastleigh

Wed 8/4

17:20-16:33

2 stops28h 13m

£581

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 30/3

12:26-08:35

2 stops15h 09m

Southampton Eastleigh

Wed 8/4

09:05-21:23

2 stops17h 18m

£581

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 19/3

06:00-08:20

2 stops22h 20m

Southampton Eastleigh

Tue 24/3

08:50-09:22

2 stops28h 32m

£608

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 2/4

06:00-08:35

2 stops21h 35m

Southampton Eastleigh

Tue 7/4

17:20-16:33

2 stops28h 13m

£618

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 30/3

12:26-08:35

2 stops15h 09m

Southampton Eastleigh

Sun 5/4

17:20-16:53

2 stops28h 33m

£619

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 26/4

12:20-08:35

2 stops15h 15m

Southampton Eastleigh

Mon 11/5

17:20-16:17

2 stops27h 57m

£655

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 26/4

08:25-08:40

2 stops19h 15m

Southampton Eastleigh

Mon 11/5

20:00-18:55

1 stop27h 55m

£663

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 26/4

20:25-16:35

1 stop15h 10m

Southampton Eastleigh

Mon 11/5

20:00-18:55

1 stop27h 55m

£669

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
1
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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

10h 15m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 10h 15m
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 10h 15m.

  • 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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