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Cheap flights from Philadelphia to London from $393

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 8/1. 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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Find the cheapest flights from Philadelphia to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:00 pm - 5:00 pm
PHL
-
SOU
20h 00m
2 stops
Delta Logo
8:50 am - 12:57 am
SOU
-
PHL
20h 07m
2 stops
$771Delta
Tue, Mar 10 - Tue, Mar 17
Delta Logo
6:54 pm - 4:50 pm
PHL
-
SOU
16h 56m
2 stops
Delta Logo
9:05 am - 11:59 pm
SOU
-
PHL
19h 54m
2 stops
$908Delta
Fri, Apr 3 - Fri, Apr 10
Multiple Airlines Logo
9:50 pm - 3:35 pm
PHL
-
SOU
13h 45m
1 stop
Multiple Airlines Logo
4:05 pm - 2:55 pm
SOU
-
PHL
26h 50m
1 stop
$919Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
9:50 pm - 11:55 am
PHL
-
SOU
10h 05m
1 stop
Multiple Airlines Logo
12:25 pm - 2:34 pm
SOU
-
PHL
30h 09m
2 stops
$933Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Scandinavian Airlines Logo
9:40 am - 8:45 am
PHL
-
SOU
18h 05m
2 stops
Scandinavian Airlines Logo
6:05 pm - 5:14 pm
SOU
-
PHL
28h 09m
2 stops
$937Scandinavian Airlines
Tue, Aug 4 - Mon, Aug 17
Scandinavian Airlines Logo
10:35 am - 8:35 am
PHL
-
SOU
17h 00m
2 stops
Scandinavian Airlines Logo
5:20 pm - 5:14 pm
SOU
-
PHL
28h 54m
2 stops
$970Scandinavian Airlines
Sun, May 24 - Sat, Jun 6
Aer Lingus Logo
8:25 pm - 4:35 pm
PHL
-
SOU
15h 10m
1 stop
Aer Lingus Logo
5:05 pm - 7:49 pm
SOU
-
PHL
31h 44m
2 stops
$996Aer Lingus
Tue, Aug 4 - Mon, Aug 17
Aer Lingus Logo
8:25 pm - 4:35 pm
PHL
-
SOU
15h 10m
1 stop
Aer Lingus Logo
5:05 pm - 4:10 pm
SOU
-
PHL
28h 05m
1 stop
$1,011Aer Lingus
Tue, Aug 4 - Mon, Aug 17
Aer Lingus Logo
6:30 pm - 4:35 pm
PHL
-
SOU
17h 05m
1 stop
Aer Lingus Logo
5:05 pm - 12:10 pm
SOU
-
PHL
48h 05m
2 stops
$1,014Aer Lingus
Wed, May 13 - Mon, May 25
Multiple Airlines Logo
3:02 pm - 11:55 am
PHL
-
SOU
15h 53m
2 stops
Multiple Airlines Logo
5:15 pm - 4:00 pm
SOU
-
PHL
27h 45m
2 stops
$1,026Multiple Airlines
Tue, Mar 3 - Sat, Mar 7

Delta flights from Philadelphia to Southampton

Our best Delta deals on Philadelphia to Southampton flight tickets
Delta
Mar 10
PHL5:00 pmPhiladelphia
20h 00m
2 stops
SOU5:00 pmSouthampton Eastleigh
Mar 17
SOU8:50 amSouthampton Eastleigh
20h 07m
2 stops
PHL12:57 amPhiladelphia
$771
Delta
Apr 3
PHL6:54 pmPhiladelphia
16h 56m
2 stops
SOU4:50 pmSouthampton Eastleigh
Apr 10
SOU9:05 amSouthampton Eastleigh
19h 54m
2 stops
PHL11:59 pmPhiladelphia
$908
Delta
Jul 27
PHL4:05 pmPhiladelphia
35h 40m
2 stops
SOU8:45 amSouthampton Eastleigh
Aug 4
SOU6:05 pmSouthampton Eastleigh
33h 32m
2 stops
PHL10:37 pmPhiladelphia
$1,080

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
Aug 4
PHL8:25 pmPhiladelphia
15h 10m
1 stop
SOU4:35 pmSouthampton Eastleigh
Aug 17
SOU5:05 pmSouthampton Eastleigh
31h 44m
2 stops
PHL7:49 pmPhiladelphia
$996
Aer Lingus
Aug 4
PHL8:25 pmPhiladelphia
15h 10m
1 stop
SOU4:35 pmSouthampton Eastleigh
Aug 17
SOU5:05 pmSouthampton Eastleigh
28h 05m
1 stop
PHL4:10 pmPhiladelphia
$1,011
Aer Lingus
May 13
PHL6:30 pmPhiladelphia
17h 05m
1 stop
SOU4:35 pmSouthampton Eastleigh
May 25
SOU5:05 pmSouthampton Eastleigh
48h 05m
2 stops
PHL12:10 pmPhiladelphia
$1,014

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated February 19, 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

Tue 3/10

5:00 pm-5:00 pm

2 stops20h 00m

Southampton Eastleigh

Tue 3/17

8:50 am-12:57 am

2 stops20h 07m

$771

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Fri 4/3

6:54 pm-4:50 pm

2 stops16h 56m

Southampton Eastleigh

Fri 4/10

9:05 am-11:59 pm

2 stops19h 54m

$908

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/10

9:50 pm-3:35 pm

1 stop13h 45m

Southampton Eastleigh

Tue 3/17

4:05 pm-2:55 pm

1 stop26h 50m

$919

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/10

9:50 pm-11:55 am

1 stop10h 05m

Southampton Eastleigh

Tue 3/17

12:25 pm-2:34 pm

2 stops30h 09m

$933

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/4

9:40 am-8:45 am

2 stops18h 05m

Southampton Eastleigh

Mon 8/17

6:05 pm-5:14 pm

2 stops28h 09m

$937

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 5/24

10:35 am-8:35 am

2 stops17h 00m

Southampton Eastleigh

Sat 6/6

5:20 pm-5:14 pm

2 stops28h 54m

$970

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/4

8:25 pm-4:35 pm

1 stop15h 10m

Southampton Eastleigh

Mon 8/17

5:05 pm-7:49 pm

2 stops31h 44m

$996

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/4

8:25 pm-4:35 pm

1 stop15h 10m

Southampton Eastleigh

Mon 8/17

5:05 pm-4:10 pm

1 stop28h 05m

$1,011

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 5/13

6:30 pm-4:35 pm

1 stop17h 05m

Southampton Eastleigh

Mon 5/25

5:05 pm-12:10 pm

2 stops48h 05m

$1,014

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 3/3

3:02 pm-11:55 am

2 stops15h 53m

Southampton Eastleigh

Sat 3/7

5:15 pm-4:00 pm

2 stops27h 45m

$1,026

Flights are sorted by cheapest round-trip 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

What airlines fly to Southampton?

British Airways, United Airlines and American 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 51% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 22 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 round-trip 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

18h 05m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 18h 05m
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?

    Southampton Eastleigh is 3499.1 mi away from Philadelphia. A reasonable flight in good conditions will take 18h 05m.

  • 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 refreshed on a daily basis.

  • How many operators does momondo search for flights from Philadelphia Airport to Southampton Eastleigh Airport?

  • How old do you have to be to fly from Philadelphia Airport to Southampton Eastleigh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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.

  • What is the most popular airline from Philadelphia to Southampton?

Best airlines flying from Philadelphia to Southampton

Compare and see reviews for airlines that fly from Philadelphia to Southampton with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom $969Free CancellationRating
7.2
1,455 reviews
Search Aer Lingus flights

Traveling 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?

It is quick and easy to find Philadelphia to Southampton flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Southampton that suits you.

Can I find flights from Philadelphia to Southampton with flexible booking policies on momondo?

Yes. All flights to Southampton from Philadelphia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Philadelphia to Southampton?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Southampton from Philadelphia.

I’m not ready to book a flight from Philadelphia to Southampton right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Philadelphia to Southampton now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southampton and let you know when they change.

An easier way to manage your Southampton trip

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