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Cheap flights from Philadelphia to London from £445

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 23/1. 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

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Multiple Airlines Logo
17:30 - 11:55
PHL
-
SOU
13h 25m1 stop
Multiple Airlines Logo
20:10 - 17:00
SOU
-
PHL
24h 50m1 stop
£528Multiple Airlines
Mon, 2 Mar - Sun, 8 Mar
KLM Logo
10:30 - 08:50
PHL
-
SOU
17h 20m2 stops
KLM Logo
17:35 - 16:50
SOU
-
PHL
28h 15m2 stops
£564KLM
Mon, 2 Feb - Mon, 9 Feb
Virgin Atlantic Logo
06:10 - 17:00
PHL
-
SOU
29h 50m2 stops
Virgin Atlantic Logo
09:30 - 09:22
SOU
-
PHL
27h 52m2 stops
£575Virgin Atlantic
Mon, 2 Mar - Sun, 8 Mar
Multiple Airlines Logo
07:50 - 15:35
PHL
-
SOU
26h 45m3 stops
Multiple Airlines Logo
20:10 - 22:46
SOU
-
PHL
30h 36m2 stops
£614Multiple Airlines
Mon, 2 Mar - Sun, 8 Mar
Multiple Airlines Logo
07:50 - 15:35
PHL
-
SOU
26h 45m3 stops
Multiple Airlines Logo
17:45 - 22:46
SOU
-
PHL
33h 01m3 stops
£631Multiple Airlines
Mon, 2 Mar - Sun, 8 Mar
KLM Logo
10:30 - 08:50
PHL
-
SOU
17h 20m2 stops
KLM Logo
17:30 - 17:11
SOU
-
PHL
28h 41m2 stops
£638KLM
Sat, 21 Feb - Sat, 28 Feb
Aer Lingus Logo
21:25 - 11:55
PHL
-
SOU
9h 30m1 stop
Aer Lingus Logo
20:10 - 14:05
SOU
-
PHL
22h 55m1 stop
£652Aer Lingus
Mon, 2 Feb - Mon, 9 Feb
Multiple Airlines Logo
21:25 - 11:55
PHL
-
SOU
9h 30m1 stop
Multiple Airlines Logo
19:00 - 16:15
SOU
-
PHL
26h 15m2 stops
£682Multiple Airlines
Mon, 2 Feb - Mon, 9 Feb
Aer Lingus Logo
18:35 - 15:35
PHL
-
SOU
16h 00m2 stops
Aer Lingus Logo
09:30 - 17:00
SOU
-
PHL
11h 30m1 stop
£700Aer Lingus
Mon, 2 Mar - Sun, 8 Mar
Aer Lingus Logo
20:50 - 08:45
PHL
-
SOU
30h 55m1 stop
Aer Lingus Logo
09:30 - 07:16
SOU
-
PHL
26h 46m2 stops
£750Aer Lingus
Sat, 21 Feb - Sat, 28 Feb

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
2 Feb
PHL21:25Philadelphia
9h 30m
1 stop
SOU11:55Southampton Eastleigh
9 Feb
SOU20:10Southampton Eastleigh
22h 55m
1 stop
PHL14:05Philadelphia
£652
Find similar
Aer Lingus
2 Mar
PHL18:35Philadelphia
16h 00m
2 stops
SOU15:35Southampton Eastleigh
8 Mar
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL17:00Philadelphia
£700
Find similar
Aer Lingus
21 Feb
PHL20:50Philadelphia
30h 55m
1 stop
SOU08:45Southampton Eastleigh
28 Feb
SOU09:30Southampton Eastleigh
26h 46m
2 stops
PHL07:16Philadelphia
£750
Find similar

KLM flights from Philadelphia to Southampton

Our best KLM deals on Philadelphia to Southampton flight tickets
KLM
2 Feb
PHL10:30Philadelphia
17h 20m
2 stops
SOU08:50Southampton Eastleigh
9 Feb
SOU17:35Southampton Eastleigh
28h 15m
2 stops
PHL16:50Philadelphia
£564
Find similar
KLM
21 Feb
PHL10:30Philadelphia
17h 20m
2 stops
SOU08:50Southampton Eastleigh
28 Feb
SOU17:30Southampton Eastleigh
28h 41m
2 stops
PHL17:11Philadelphia
£638
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 8 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

Mon 2/3

17:30-11:55

1 stop13h 25m

Southampton Eastleigh

Sun 8/3

20:10-17:00

1 stop24h 50m

£528

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/2

10:30-08:50

2 stops17h 20m

Southampton Eastleigh

Mon 9/2

17:35-16:50

2 stops28h 15m

£564

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/3

06:10-17:00

2 stops29h 50m

Southampton Eastleigh

Sun 8/3

09:30-09:22

2 stops27h 52m

£575

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/3

07:50-15:35

3 stops26h 45m

Southampton Eastleigh

Sun 8/3

20:10-22:46

2 stops30h 36m

£614

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/3

07:50-15:35

3 stops26h 45m

Southampton Eastleigh

Sun 8/3

17:45-22:46

3 stops33h 01m

£631

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 21/2

10:30-08:50

2 stops17h 20m

Southampton Eastleigh

Sat 28/2

17:30-17:11

2 stops28h 41m

£638

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/2

21:25-11:55

1 stop9h 30m

Southampton Eastleigh

Mon 9/2

20:10-14:05

1 stop22h 55m

£652

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/2

21:25-11:55

1 stop9h 30m

Southampton Eastleigh

Mon 9/2

19:00-16:15

2 stops26h 15m

£682

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 2/3

18:35-15:35

2 stops16h 00m

Southampton Eastleigh

Sun 8/3

09:30-17:00

1 stop11h 30m

£700

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 21/2

20:50-08:45

1 stop30h 55m

Southampton Eastleigh

Sat 28/2

09:30-07:16

2 stops26h 46m

£750

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 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

13h 15m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 13h 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 13h 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.

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