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Cheap flights from Philadelphia to London from $524

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 8/10. 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
1:20 pm - 8:35 am
PHL
-
SOU
14h 15m
2 stops
Delta Logo
9:05 am - 10:37 pm
SOU
-
PHL
18h 32m
2 stops
$1,024Delta
Tue, Sep 1 - Wed, Sep 9
Delta Logo
6:00 am - 4:50 pm
PHL
-
SOU
29h 50m
2 stops
Delta Logo
5:20 pm - 5:14 pm
SOU
-
PHL
28h 54m
2 stops
$1,048Delta
Mon, Aug 31 - Mon, Sep 7
Delta Logo
9:40 am - 8:45 am
PHL
-
SOU
18h 05m
2 stops
Delta Logo
5:20 pm - 6:29 pm
SOU
-
PHL
30h 09m
2 stops
$1,055Delta
Wed, Aug 26 - Mon, Aug 31
Delta Logo
6:00 am - 8:45 am
PHL
-
SOU
21h 45m
2 stops
Delta Logo
6:05 pm - 10:37 pm
SOU
-
PHL
33h 32m
2 stops
$1,085Delta
Tue, Aug 18 - Tue, Aug 25
Delta Logo
12:02 pm - 8:45 am
PHL
-
SOU
15h 43m
2 stops
Delta Logo
9:15 am - 1:01 am
SOU
-
PHL
20h 46m
2 stops
$1,086Delta
Tue, Aug 4 - Fri, Aug 21
Delta Logo
4:30 pm - 8:45 am
PHL
-
SOU
35h 15m
2 stops
Delta Logo
6:05 pm - 4:17 pm
SOU
-
PHL
27h 12m
2 stops
$1,091Delta
Sat, Aug 8 - Wed, Aug 19
Delta Logo
6:30 pm - 8:45 am
PHL
-
SOU
33h 15m
2 stops
Delta Logo
9:15 am - 1:01 am
SOU
-
PHL
20h 46m
2 stops
$1,092Delta
Sat, Aug 8 - Fri, Aug 21
Delta Logo
7:59 pm - 4:50 pm
PHL
-
SOU
15h 51m
2 stops
Delta Logo
9:15 am - 1:01 am
SOU
-
PHL
20h 46m
2 stops
$1,098Delta
Sun, Aug 30 - Sun, Sep 6
Delta Logo
9:40 am - 8:45 am
PHL
-
SOU
18h 05m
2 stops
Delta Logo
9:05 am - 10:20 pm
SOU
-
PHL
18h 15m
2 stops
$1,104Delta
Tue, Aug 25 - Mon, Sep 7
Delta Logo
9:40 am - 8:45 am
PHL
-
SOU
18h 05m
2 stops
Delta Logo
9:05 am - 10:20 pm
SOU
-
PHL
18h 15m
2 stops
$1,105Delta
Tue, Aug 25 - Mon, Sep 7

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
Aug 25
PHL8:28 amPhiladelphia
18h 37m
2 stops
SOU8:05 amSouthampton Eastleigh
Sep 7
SOU8:00 pmSouthampton Eastleigh
27h 55m
1 stop
PHL6:55 pmPhiladelphia
$1,167
Aer Lingus
Aug 25
PHL8:25 pmPhiladelphia
15h 25m
1 stop
SOU4:50 pmSouthampton Eastleigh
Sep 7
SOU8:00 pmSouthampton Eastleigh
27h 55m
1 stop
PHL6:55 pmPhiladelphia
$1,168
Aer Lingus
Aug 25
PHL8:28 amPhiladelphia
30h 02m
2 stops
SOU7:30 pmSouthampton Eastleigh
Sep 7
SOU5:20 pmSouthampton Eastleigh
30h 35m
1 stop
PHL6:55 pmPhiladelphia
$1,207

Delta flights from Philadelphia to Southampton

Our best Delta deals on Philadelphia to Southampton flight tickets
Delta
Sep 1
PHL1:20 pmPhiladelphia
14h 15m
2 stops
SOU8:35 amSouthampton Eastleigh
Sep 9
SOU9:05 amSouthampton Eastleigh
18h 32m
2 stops
PHL10:37 pmPhiladelphia
$1,024
Delta
Aug 31
PHL6:00 amPhiladelphia
29h 50m
2 stops
SOU4:50 pmSouthampton Eastleigh
Sep 7
SOU5:20 pmSouthampton Eastleigh
28h 54m
2 stops
PHL5:14 pmPhiladelphia
$1,048
Delta
Aug 26
PHL9:40 amPhiladelphia
18h 05m
2 stops
SOU8:45 amSouthampton Eastleigh
Sep 2
SOU9:05 amSouthampton Eastleigh
15h 53m
2 stops
PHL7:58 pmPhiladelphia
$1,055

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 April 7, 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

Cheapest round-trip
Quickest round-trip

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 9/1

1:20 pm-8:35 am

2 stops14h 15m

Southampton Eastleigh

Wed 9/9

9:05 am-10:37 pm

2 stops18h 32m

$1,024

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 8/31

6:00 am-4:50 pm

2 stops29h 50m

Southampton Eastleigh

Mon 9/7

5:20 pm-5:14 pm

2 stops28h 54m

$1,048

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 8/26

9:40 am-8:45 am

2 stops18h 05m

Southampton Eastleigh

Mon 8/31

5:20 pm-6:29 pm

2 stops30h 09m

$1,055

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/18

6:00 am-8:45 am

2 stops21h 45m

Southampton Eastleigh

Tue 8/25

6:05 pm-10:37 pm

2 stops33h 32m

$1,085

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/4

12:02 pm-8:45 am

2 stops15h 43m

Southampton Eastleigh

Fri 8/21

9:15 am-1:01 am

2 stops20h 46m

$1,086

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 8/8

4:30 pm-8:45 am

2 stops35h 15m

Southampton Eastleigh

Wed 8/19

6:05 pm-4:17 pm

2 stops27h 12m

$1,091

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 8/8

6:30 pm-8:45 am

2 stops33h 15m

Southampton Eastleigh

Fri 8/21

9:15 am-1:01 am

2 stops20h 46m

$1,092

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sun 8/30

7:59 pm-4:50 pm

2 stops15h 51m

Southampton Eastleigh

Sun 9/6

9:15 am-1:01 am

2 stops20h 46m

$1,098

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/25

9:40 am-8:45 am

2 stops18h 05m

Southampton Eastleigh

Mon 9/7

9:05 am-10:20 pm

2 stops18h 15m

$1,104

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 8/25

9:40 am-8:45 am

2 stops18h 05m

Southampton Eastleigh

Mon 9/7

9:05 am-10:20 pm

2 stops18h 15m

$1,105

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 48% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 21 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

14h 00m

Direct flights

None
The fastest flight from Philadelphia to Southampton takes 14h 00m
There are no direct flights from Philadelphia to Southampton. There are no popular flight routes from Philadelphia to Southampton.
Search flight deals

Frequently asked questions about flying from Philadelphia to Southampton

  • 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 14h 00m.

  • 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 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.

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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