Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Philadelphia to London from $469

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 8/15. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize 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 round-trip flights

Aer Lingus Logo
8:30 pm - 3:45 pmPHL-SOU
14h 15m1 stop
Aer Lingus Logo
9:40 am - 7:00 pmSOU-PHL
14h 20m1 stop
$804Aer Lingus
Find Deal
vie., sep. 12 - vie., sep. 19
Delta Logo
10:39 am - 8:45 amPHL-SOU
17h 06m2 stops
Delta Logo
9:20 am - 5:20 pmSOU-PHL
37h 00m2 stops
$924Delta
Find Deal
dom., ago. 17 - lun., ago. 25
Delta Logo
6:41 pm - 8:45 amPHL-SOU
33h 04m2 stops
Delta Logo
9:20 am - 5:50 pmSOU-PHL
37h 30m2 stops
$930Delta
Find Deal
sáb., ago. 16 - lun., ago. 25
Aer Lingus Logo
10:20 am - 8:40 amPHL-SOU
17h 20m2 stops
Aer Lingus Logo
9:40 am - 7:00 pmSOU-PHL
14h 20m1 stop
$975Aer Lingus
Find Deal
vie., sep. 12 - vie., sep. 19
Delta Logo
6:00 am - 8:45 amPHL-SOU
21h 45m2 stops
Delta Logo
9:20 am - 8:55 pmSOU-PHL
16h 35m2 stops
$1,055Delta
Find Deal
dom., ago. 17 - dom., ago. 24
Delta Logo
6:41 pm - 8:45 amPHL-SOU
33h 04m2 stops
Delta Logo
9:20 am - 5:20 pmSOU-PHL
37h 00m2 stops
$1,061Delta
Find Deal
sáb., ago. 16 - sáb., ago. 23
Delta Logo
2:55 pm - 8:45 amPHL-SOU
36h 50m2 stops
Delta Logo
6:25 pm - 11:22 pmSOU-PHL
33h 57m2 stops
$1,105Delta
Find Deal
sáb., ago. 16 - vie., ago. 22
Delta Logo
6:00 am - 8:45 amPHL-SOU
21h 45m2 stops
Delta Logo
9:20 am - 10:12 pmSOU-PHL
17h 52m2 stops
$1,153Delta
Find Deal
vie., sep. 12 - vie., sep. 19
British Airways Logo
6:30 pm - 12:00 pmPHL-SOU
12h 30m2 stops
British Airways Logo
9:10 am - 7:00 pmSOU-PHL
14h 50m1 stop
$1,941British Airways
Find Deal
mar., sep. 23 - dom., sep. 28
British Airways Logo
7:20 pm - 4:00 pmPHL-SOU
15h 40m1 stop
British Airways Logo
9:10 am - 7:00 pmSOU-PHL
14h 50m1 stop
$1,954British Airways
Find Deal
mar., sep. 23 - dom., sep. 28

British Airways flights from Philadelphia to Southampton

Our best British Airways deals on Philadelphia to Southampton flight tickets
British Airways
Sep 23
PHL6:30 pmPhiladelphia
12h 30m
2 stops
SOU12:00 pmSouthampton Eastleigh
Sep 28
SOU9:10 amSouthampton Eastleigh
14h 50m
1 stop
PHL7:00 pmPhiladelphia
$1,941
Find similar
British Airways
Sep 23
PHL7:20 pmPhiladelphia
15h 40m
1 stop
SOU4:00 pmSouthampton Eastleigh
Sep 28
SOU9:10 amSouthampton Eastleigh
14h 50m
1 stop
PHL7:00 pmPhiladelphia
$1,954
Find similar
British Airways
Aug 13
PHL7:25 pmPhiladelphia
11h 35m
1 stop
SOU12:00 pmSouthampton Eastleigh
Aug 22
SOU9:40 amSouthampton Eastleigh
14h 20m
1 stop
PHL7:00 pmPhiladelphia
$3,044
Find similar

Aer Lingus flights from Philadelphia to Southampton

Our best Aer Lingus deals on Philadelphia to Southampton flight tickets
Aer Lingus
Sep 12
PHL8:30 pmPhiladelphia
14h 15m
1 stop
SOU3:45 pmSouthampton Eastleigh
Sep 19
SOU9:40 amSouthampton Eastleigh
14h 20m
1 stop
PHL7:00 pmPhiladelphia
$804
Find similar
Aer Lingus
Sep 12
PHL10:20 amPhiladelphia
17h 20m
2 stops
SOU8:40 amSouthampton Eastleigh
Sep 19
SOU9:40 amSouthampton Eastleigh
14h 20m
1 stop
PHL7:00 pmPhiladelphia
$975
Find similar

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 julio 31, 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

vie. 9/12

8:30 pm-3:45 pm

1 stop14h 15m

Southampton Eastleigh

vie. 9/19

9:40 am-7:00 pm

1 stop14h 20m

$804

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

dom. 8/17

10:39 am-8:45 am

2 stops17h 06m

Southampton Eastleigh

lun. 8/25

9:20 am-5:20 pm

2 stops37h 00m

$924

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

sáb. 8/16

6:41 pm-8:45 am

2 stops33h 04m

Southampton Eastleigh

lun. 8/25

9:20 am-5:50 pm

2 stops37h 30m

$930

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

vie. 9/12

10:20 am-8:40 am

2 stops17h 20m

Southampton Eastleigh

vie. 9/19

9:40 am-7:00 pm

1 stop14h 20m

$975

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

dom. 8/17

6:00 am-8:45 am

2 stops21h 45m

Southampton Eastleigh

dom. 8/24

9:20 am-8:55 pm

2 stops16h 35m

$1,055

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

sáb. 8/16

6:41 pm-8:45 am

2 stops33h 04m

Southampton Eastleigh

sáb. 8/23

9:20 am-5:20 pm

2 stops37h 00m

$1,061

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

sáb. 8/16

2:55 pm-8:45 am

2 stops36h 50m

Southampton Eastleigh

vie. 8/22

6:25 pm-11:22 pm

2 stops33h 57m

$1,105

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

vie. 9/12

6:00 am-8:45 am

2 stops21h 45m

Southampton Eastleigh

vie. 9/19

9:20 am-10:12 pm

2 stops17h 52m

$1,153

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

mar. 9/23

6:30 pm-12:00 pm

2 stops12h 30m

Southampton Eastleigh

dom. 9/28

9:10 am-7:00 pm

1 stop14h 50m

$1,941

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

mar. 9/23

7:20 pm-4:00 pm

1 stop15h 40m

Southampton Eastleigh

dom. 9/28

9:10 am-7:00 pm

1 stop14h 50m

$1,954

Flights are sorted by cheapest round-trip 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 day to depart on your flight to Southampton?

On average, the least expensive day to fly to Southampton from Philadelphia is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $928. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Southampton for around $1,306.

What is the cheapest time of day to depart on your flight to Southampton?

Flying to Southampton from Philadelphia in the evening is the least expensive time of day to depart. momondo users have found prices as low as $871 when looking at flights departing in the evening. Flights to Southampton are more costly in the afternoon, with an average ticket price of $1,054. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

Best Price Found

$469

Fastest flight time

11h 35m

Direct flights

None

Airports in Southampton

1 airport
The best one-way flight to Southampton from Philadelphia in the past 72 hours is $469. The best round-trip flight deal from Philadelphia to Southampton found on momondo in the last 72 hours is $804.
The fastest flight from Philadelphia to Southampton takes 11h 35m
There are no direct flights from Philadelphia to Southampton. Popular non-direct route for this connection is Philadelphia Airport - Southampton Eastleigh Airport.
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
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 11h 35m.

  • 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 $880Free CancellationRating
7.1
1,192 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

We make it super easy to schedule, organize 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
mar. 8/5
mar. 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom