Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Philadelphia to London from £427

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 10/2. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Philadelphia to London

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
11:08 - 08:35
PHL
-
SOU
16h 27m
2 stops
Delta Logo
09:05 - 16:37
SOU
-
PHL
36h 32m
2 stops
£605Delta
Thu, 9 Apr - Mon, 20 Apr
Delta Logo
11:08 - 08:35
PHL
-
SOU
16h 27m
2 stops
Delta Logo
09:05 - 16:37
SOU
-
PHL
36h 32m
2 stops
£622Delta
Wed, 8 Apr - Mon, 20 Apr
Delta Logo
06:00 - 08:35
PHL
-
SOU
21h 35m
2 stops
Delta Logo
09:05 - 00:59
SOU
-
PHL
20h 54m
2 stops
£658Delta
Thu, 9 Apr - Wed, 22 Apr
Delta Logo
11:08 - 08:35
PHL
-
SOU
16h 27m
2 stops
Delta Logo
09:05 - 00:59
SOU
-
PHL
20h 54m
2 stops
£674Delta
Wed, 8 Apr - Wed, 22 Apr
Multiple Airlines Logo
18:50 - 16:35
PHL
-
SOU
16h 45m
1 stop
Multiple Airlines Logo
09:10 - 14:55
SOU
-
PHL
10h 45m
1 stop
£726Multiple Airlines
Fri, 17 Apr - Thu, 23 Apr
Aer Lingus Logo
20:25 - 08:40
PHL
-
SOU
31h 15m
1 stop
Aer Lingus Logo
09:10 - 14:55
SOU
-
PHL
10h 45m
1 stop
£732Aer Lingus
Tue, 7 Apr - Wed, 22 Apr
Multiple Airlines Logo
20:25 - 16:35
PHL
-
SOU
15h 10m
1 stop
Multiple Airlines Logo
09:10 - 17:38
SOU
-
PHL
13h 28m
2 stops
£755Multiple Airlines
Fri, 17 Apr - Thu, 23 Apr
KLM Logo
13:24 - 08:35
PHL
-
SOU
14h 11m
2 stops
KLM Logo
09:15 - 22:37
SOU
-
PHL
18h 22m
2 stops
£766KLM
Wed, 27 May - Sun, 7 Jun
Aer Lingus Logo
20:25 - 19:30
PHL
-
SOU
18h 05m
1 stop
Aer Lingus Logo
20:00 - 15:55
SOU
-
PHL
24h 55m
1 stop
£768Aer Lingus
Tue, 12 May - Thu, 14 May
Multiple Airlines Logo
13:20 - 08:45
PHL
-
SOU
14h 25m
2 stops
Multiple Airlines Logo
17:20 - 18:08
SOU
-
PHL
29h 48m
2 stops
£772Multiple Airlines
Fri, 17 Apr - Thu, 23 Apr

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
7 Apr
PHL20:25Philadelphia
31h 15m
1 stop
SOU08:40Southampton Eastleigh
22 Apr
SOU09:10Southampton Eastleigh
10h 45m
1 stop
PHL14:55Philadelphia
£732
Aer Lingus
12 May
PHL20:25Philadelphia
18h 05m
1 stop
SOU19:30Southampton Eastleigh
14 May
SOU20:00Southampton Eastleigh
24h 55m
1 stop
PHL15:55Philadelphia
£768
Aer Lingus
22 Jul
PHL18:50Philadelphia
19h 40m
1 stop
SOU19:30Southampton Eastleigh
3 Aug
SOU20:00Southampton Eastleigh
25h 05m
1 stop
PHL16:05Philadelphia
£817

Delta flights from Philadelphia to Southampton

Our best Delta deals on Philadelphia to Southampton flight tickets
Delta
9 Apr
PHL11:08Philadelphia
16h 27m
2 stops
SOU08:35Southampton Eastleigh
20 Apr
SOU09:05Southampton Eastleigh
36h 32m
2 stops
PHL16:37Philadelphia
£605
Delta
8 Apr
PHL06:00Philadelphia
21h 35m
2 stops
SOU08:35Southampton Eastleigh
21 Apr
SOU17:20Southampton Eastleigh
28h 17m
2 stops
PHL16:37Philadelphia
£622
Delta
9 Apr
PHL06:00Philadelphia
21h 35m
2 stops
SOU08:35Southampton Eastleigh
22 Apr
SOU09:05Southampton Eastleigh
20h 54m
2 stops
PHL00:59Philadelphia
£658

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 29 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

Thu 9/4

11:08-08:35

2 stops16h 27m

Southampton Eastleigh

Mon 20/4

09:05-16:37

2 stops36h 32m

£605

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 8/4

11:08-08:35

2 stops16h 27m

Southampton Eastleigh

Mon 20/4

09:05-16:37

2 stops36h 32m

£622

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 9/4

06:00-08:35

2 stops21h 35m

Southampton Eastleigh

Wed 22/4

09:05-00:59

2 stops20h 54m

£658

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 8/4

11:08-08:35

2 stops16h 27m

Southampton Eastleigh

Wed 22/4

09:05-00:59

2 stops20h 54m

£674

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 17/4

18:50-16:35

1 stop16h 45m

Southampton Eastleigh

Thu 23/4

09:10-14:55

1 stop10h 45m

£726

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 7/4

20:25-08:40

1 stop31h 15m

Southampton Eastleigh

Wed 22/4

09:10-14:55

1 stop10h 45m

£732

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 17/4

20:25-16:35

1 stop15h 10m

Southampton Eastleigh

Thu 23/4

09:10-17:38

2 stops13h 28m

£755

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 27/5

13:24-08:35

2 stops14h 11m

Southampton Eastleigh

Sun 7/6

09:15-22:37

2 stops18h 22m

£766

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 12/5

20:25-19:30

1 stop18h 05m

Southampton Eastleigh

Thu 14/5

20:00-15:55

1 stop24h 55m

£768

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 17/4

13:20-08:45

2 stops14h 25m

Southampton Eastleigh

Thu 23/4

17:20-18:08

2 stops29h 48m

£772

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 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?

Aer Lingus is the most popular carrier operating from Philadelphia to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to Southampton from Philadelphia according to our data. British Airways 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 45m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 13h 45m
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 45m.

  • 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 28/2
Sat 7/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom