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$332+ Cheap flights from Philadelphia (PHL) to Southampton (SOU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SOU
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap 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 septiembre 17, 2025.

Round-trip from

$877
(KLM)

One-way from

$332
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$656
From Philadelphia to Southampton Eastleigh
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One-way flight from Philadelphia to Southampton Eastleigh
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Highest demand for flights based on searches. 19% potential increase in price ($190 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 17, 2025.

This KLM deal was found by Cheapflights users on 9/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/77:25 pmPHL - SOU
2 stops16h 35mKLM
vie. 11/218:40 amSOU - PHL
2 stops21h 11mKLM
Deal found 9/17$877
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/195:30 pmPHL - SOU
1 stop10h 15mAer Lingus
vie. 11/289:30 amSOU - PHL
1 stop11h 30mAer Lingus
Deal found 9/16$943
This Ovago deal was found by Cheapflights users on 9/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/75:30 pmPHL - SOU
1 stop10h 15mAer Lingus
vie. 11/218:10 pmSOU - PHL
1 stop24h 50mAer Lingus
Deal found 9/17$1,001
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/75:30 pmPHL - SOU
2 stops14h 40mMultiple Airlines
vie. 11/218:10 pmSOU - PHL
3 stops30h 55mMultiple Airlines
Deal found 9/17$1,654

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 septiembre 17, 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

vie. 11/7

7:25 pm-5:00 pm

2 stops16h 35m

Southampton Eastleigh

vie. 11/21

8:40 am-12:51 am

2 stops21h 11m

$877

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

mié. 11/19

5:30 pm-8:45 am

1 stop10h 15m

Southampton Eastleigh

vie. 11/28

9:30 am-4:00 pm

1 stop11h 30m

$943

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

vie. 11/7

5:30 pm-8:45 am

1 stop10h 15m

Southampton Eastleigh

vie. 11/21

8:10 pm-4:00 pm

1 stop24h 50m

$1,001

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

mar. 3/3

6:15 am-5:00 pm

2 stops29h 45m

Southampton Eastleigh

vie. 3/6

8:40 am-8:37 pm

2 stops16h 57m

$1,195

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

lun. 3/2

8:25 am-8:10 am

2 stops18h 45m

Southampton Eastleigh

vie. 3/6

8:40 am-8:37 pm

2 stops16h 57m

$1,196

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

lun. 3/2

5:30 pm-11:55 am

1 stop13h 25m

Southampton Eastleigh

vie. 3/6

12:15 pm-4:15 pm

2 stops33h 00m

$1,470

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

sáb. 11/8

9:11 pm-7:20 pm

2 stops41h 09m

$332

PhiladelphiaSouthampton

PHL - SOU

PHLSOU

Philadelphia

sáb. 11/8

5:30 pm-8:45 am

1 stop10h 15m

$485

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

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 $787). Flying from Philadelphia to Southampton in June is currently the most expensive (average of $1,308). 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.

What is the cheapest time of day to fly from PHL to SOU?

Find hourly flight availability from Philadelphia to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

When flying from Philadelphia to Southampton, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 18% versus a flight in the morning.

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 septiembre 17, 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
1,277 reviews

Overall

7.2

Boarding

7.3

Crew

8.0

Comfort

7.1

Food

6.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.
Aer Lingus
7.2
Good
1,277 reviews
Aer Lingus
7.2
Good
1,277 reviews

Overall

7.2

Boarding

7.3

Crew

8.0

Comfort

7.1

Food

6.5

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

SEA - DUB

Most airlines board by group even though passengers are seated at the back. At Seatac, passengers were seated starting at the back. Otherwise, flight was good.

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 10h 15m. Fly via KLM or Aer Lingus 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 ($880), 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 $787). Flying from Philadelphia to Southampton in June is currently the most expensive (average of $1,308). 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.

See more FAQs

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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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$880Average$1,148FlexibilityNo cancel feeOn-timeN/A

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