Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Philadelphia to London from £376

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 1/11. 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

KLM Logo
12:10 - 08:20PHL-SOU
16h 10m2 stops
KLM Logo
08:40 - 00:52SOU-PHL
21h 12m2 stops
£608KLM
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Aer Lingus Logo
17:30 - 08:45PHL-SOU
10h 15m1 stop
Aer Lingus Logo
09:30 - 16:00SOU-PHL
11h 30m1 stop
£610Aer Lingus
Find Deal
Fri, 21 Nov - Fri, 28 Nov
Aer Lingus Logo
06:00 - 08:45PHL-SOU
22h 45m2 stops
Aer Lingus Logo
16:05 - 16:00SOU-PHL
28h 55m1 stop
£657Aer Lingus
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Aer Lingus Logo
17:30 - 08:45PHL-SOU
10h 15m1 stop
Aer Lingus Logo
09:30 - 16:00SOU-PHL
11h 30m1 stop
£694Aer Lingus
Find Deal
Wed, 19 Nov - Fri, 28 Nov
Aer Lingus Logo
06:00 - 08:45PHL-SOU
21h 45m2 stops
Aer Lingus Logo
09:30 - 16:00SOU-PHL
11h 30m1 stop
£697Aer Lingus
Find Deal
Wed, 19 Nov - Fri, 28 Nov
Aer Lingus Logo
06:00 - 08:45PHL-SOU
21h 45m2 stops
Aer Lingus Logo
09:30 - 07:56SOU-PHL
27h 26m2 stops
£712Aer Lingus
Find Deal
Wed, 19 Nov - Fri, 28 Nov
Logo
22:15 - 19:40PHL-SOU
17h 25m1 stop
Logo
20:10 - 13:55SOU-PHL
22h 45m1 stop
£728
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Virgin Atlantic Logo
11:45 - 17:00PHL-SOU
24h 15m2 stops
Virgin Atlantic Logo
17:30 - 00:22SOU-PHL
35h 52m2 stops
£879Virgin Atlantic
Find Deal
Tue, 3 Mar - Fri, 6 Mar
British Airways Logo
17:30 - 11:55PHL-SOU
13h 25m1 stop
British Airways Logo
12:15 - 16:15SOU-PHL
33h 00m2 stops
£1,082British Airways
Find Deal
Tue, 3 Mar - Fri, 6 Mar
British Airways Logo
17:30 - 15:35PHL-SOU
17h 05m1 stop
British Airways Logo
19:55 - 16:15SOU-PHL
25h 20m2 stops
£7,785British Airways
Find Deal
Thu, 18 Dec - Tue, 23 Dec

British Airways flights from Philadelphia to Southampton

Our best British Airways deals on Philadelphia to Southampton flight tickets
British Airways
3 Mar
PHL17:30Philadelphia
13h 25m
1 stop
SOU11:55Southampton Eastleigh
6 Mar
SOU12:15Southampton Eastleigh
33h 00m
2 stops
PHL16:15Philadelphia
£1,082
Find similar
British Airways
23 Sept
PHL19:20Philadelphia
11h 45m
1 stop
SOU12:05Southampton Eastleigh
19 Dec
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL16:00Philadelphia
£2,241
Find similar
British Airways
23 Sept
PHL19:50Philadelphia
15h 30m
2 stops
SOU16:20Southampton Eastleigh
19 Dec
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL16:00Philadelphia
£2,361
Find similar

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
21 Nov
PHL17:30Philadelphia
10h 15m
1 stop
SOU08:45Southampton Eastleigh
28 Nov
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL16:00Philadelphia
£610
Find similar
Aer Lingus
29 Oct
PHL06:00Philadelphia
22h 45m
2 stops
SOU08:45Southampton Eastleigh
5 Nov
SOU16:05Southampton Eastleigh
28h 55m
1 stop
PHL16:00Philadelphia
£657
Find similar
Aer Lingus
19 Nov
PHL17:30Philadelphia
10h 15m
1 stop
SOU08:45Southampton Eastleigh
28 Nov
SOU09:30Southampton Eastleigh
11h 30m
1 stop
PHL16:00Philadelphia
£694
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 16 September 2025.
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

Wed 29/10

12:10-08:20

2 stops16h 10m

Southampton Eastleigh

Wed 5/11

08:40-00:52

2 stops21h 12m

£608

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 21/11

17:30-08:45

1 stop10h 15m

Southampton Eastleigh

Fri 28/11

09:30-16:00

1 stop11h 30m

£610

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 29/10

06:00-08:45

2 stops22h 45m

Southampton Eastleigh

Wed 5/11

16:05-16:00

1 stop28h 55m

£657

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 19/11

17:30-08:45

1 stop10h 15m

Southampton Eastleigh

Fri 28/11

09:30-16:00

1 stop11h 30m

£694

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 19/11

06:00-08:45

2 stops21h 45m

Southampton Eastleigh

Fri 28/11

09:30-16:00

1 stop11h 30m

£697

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 19/11

06:00-08:45

2 stops21h 45m

Southampton Eastleigh

Fri 28/11

09:30-07:56

2 stops27h 26m

£712

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 29/10

22:15-19:40

1 stop17h 25m

Southampton Eastleigh

Wed 5/11

20:10-13:55

1 stop22h 45m

£728

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/3

11:45-17:00

2 stops24h 15m

Southampton Eastleigh

Fri 6/3

17:30-00:22

2 stops35h 52m

£879

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/3

17:30-11:55

1 stop13h 25m

Southampton Eastleigh

Fri 6/3

12:15-16:15

2 stops33h 00m

£1,082

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 18/12

17:30-15:35

1 stop17h 05m

Southampton Eastleigh

Tue 23/12

19:55-16:15

2 stops25h 20m

£7,785

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 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 42% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 12 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

Direct flights

None
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

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
Thu 16/10
Thu 23/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom