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$739+ Cheap flights from Philadelphia (PHL) to Southampton (SOU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOU
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Philadelphia to Southampton

Cheapest flights from Philadelphia to Southampton
Explore the most affordable flight options available from Philadelphia to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

This KAYAK deal was found by Cheapflights users on 12/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:30 pmPHL - SOU
1 stop17h 05mAer Lingus
Fri 1/29:30 amSOU - PHL
1 stop11h 30mAer Lingus
Deal found 12/27$3,024

Find flight deals from Philadelphia to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$739
(lastminute.com)

One-way from

$293
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$899
Provider with most accurate pricing for Philadelphia-Southampton Eastleigh flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Southampton Eastleigh flights.
Search Deals
From Philadelphia to Southampton Eastleigh
Search Deals
One-way flight from Philadelphia to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($189 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Philadelphia to Southampton that are best for you.

Fly from

Philadelphia

Fly to

Southampton

Route

Depart

Return

Price

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Sat 2/21

5:22 pm-8:20 am

2 stops33h 58m

Southampton Eastleigh

Mon 3/2

5:35 pm-4:57 pm

2 stops28h 22m

$739

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 1/14

9:25 pm-7:40 pm

1 stop17h 15m

Southampton Eastleigh

Wed 1/21

12:25 pm-2:05 pm

1 stop30h 40m

$1,004

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 6/24

6:15 am-8:35 am

2 stops21h 20m

Southampton Eastleigh

Wed 7/1

5:20 pm-10:37 pm

2 stops34h 17m

$1,108

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 5/28

8:30 pm-7:30 pm

1 stop18h 00m

Southampton Eastleigh

Sun 6/7

8:00 pm-7:00 pm

1 stop28h 00m

$1,225

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Mon 6/22

3:10 pm-4:50 pm

2 stops20h 40m

Southampton Eastleigh

Wed 7/1

5:20 pm-10:37 pm

2 stops34h 17m

$1,238

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 6/23

3:10 pm-8:35 am

2 stops36h 25m

Southampton Eastleigh

Mon 7/6

6:05 pm-8:33 pm

2 stops31h 28m

$1,246

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Tue 6/23

3:10 pm-4:50 pm

2 stops44h 40m

Southampton Eastleigh

Wed 7/1

5:20 pm-10:37 pm

2 stops34h 17m

$1,247

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 6/11

8:30 pm-8:40 am

1 stop31h 10m

Southampton Eastleigh

Wed 6/24

9:10 am-7:00 pm

1 stop14h 50m

$1,286

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Thu 6/25

11:45 am-8:35 am

2 stops15h 50m

Southampton Eastleigh

Mon 7/6

6:05 pm-5:25 pm

2 stops28h 20m

$1,292

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

Wed 6/24

6:15 am-8:35 am

2 stops21h 20m

Southampton Eastleigh

Fri 7/3

9:05 am-4:06 pm

2 stops36h 01m

$1,292

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 11 results
1
2

Compare providers for flights from Philadelphia to Southampton

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Southampton in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-Southampton flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-Southampton flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Philadelphia-Southampton flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-Southampton flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-Southampton flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Philadelphia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Southampton

What is the cheapest month to book a flight from Philadelphia to Southampton?

Currently, November is the cheapest month in which you can book a flight from Philadelphia to Southampton (average of $282). Flying from Philadelphia to Southampton in June is currently the most expensive (average of $534). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated December 28, 2025.
Read reviews from past customers who have flown Aer Lingus from Philadelphia to Southampton. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,412 reviews

Entertainment

6.9

Food

6.6

Comfort

7.1

Crew

8.0

Boarding

7.4

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,412 reviews
Aer Lingus
7.2
Good
1,412 reviews

Entertainment

6.9

Food

6.6

Comfort

7.1

Crew

8.0

Boarding

7.4

Overall

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Philadelphia to Southampton?

    There are many flights that can get you from Philadelphia to Southampton in 17h 15m. Fly via Virgin Atlantic, Aer Lingus, or Delta to get the fastest option. The distance between Philadelphia and Southampton is about 3507 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Philadelphia to Southampton round-trip?

    According to our current data, Aer Lingus ($969), offers the cheapest pricing from Philadelphia to Southampton.

  • Can I find deals for flights from Philadelphia to Southampton that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Southampton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Southampton.

  • Can I find deals for business class flights from Philadelphia to Southampton?

    Yes. Cheapflights offers flight deals from Philadelphia to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to Southampton?

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to Southampton (average of $282). Flying from Philadelphia to Southampton in June is currently the most expensive (average of $534). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from Philadelphia to Southampton

Discover the top airline that operate flights from Philadelphia to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$969Average$1,157FlexibilityNo cancel feeOn-timeN/A

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