PHL - SOU

$766 Find Cheap Flights from Philadelphia to Southampton

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Southampton departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Southampton

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Southampton, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Southampton, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$766
Delta
Sun 3/15Mon 3/23
PHL - SOU • 2 stops
Cheapest one-way
Multiple Airlines
Thu 1/22
PHL - SOU • multi-stop
Top airlines
Delta
Cheapest • from $766 (round-trip)
Aer Lingus
Best reviews • 7.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Southampton (PHL-SOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Southampton that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Southampton

Sun, Mar 15 - Mon, Mar 23
Delta Logo
5:33 pm - 8:20 am
PHL
-
SOU
34h 47m
2 stops
Delta Logo
5:40 pm - 11:00 pm
SOU
-
PHL
33h 20m
2 stops
$766Delta
Tue, Mar 17 - Mon, Mar 23
Delta Logo
8:29 pm - 5:25 pm
PHL
-
SOU
40h 56m
2 stops
Delta Logo
5:40 pm - 11:00 pm
SOU
-
PHL
33h 20m
2 stops
$772Delta
Tue, Mar 31 - Mon, Apr 6
Delta Logo
6:00 am - 8:35 am
PHL
-
SOU
21h 35m
2 stops
Delta Logo
5:20 pm - 5:12 pm
SOU
-
PHL
28h 52m
2 stops
$780Delta
Mon, Mar 30 - Wed, Apr 8
Delta Logo
12:26 pm - 8:35 am
PHL
-
SOU
15h 09m
2 stops
Delta Logo
9:05 am - 9:23 pm
SOU
-
PHL
17h 18m
2 stops
$781Delta
Thu, Mar 19 - Wed, Mar 25
Delta Logo
6:00 am - 8:20 am
PHL
-
SOU
22h 20m
2 stops
Delta Logo
8:50 am - 9:22 am
SOU
-
PHL
28h 32m
2 stops
$816Delta
Thu, Apr 2 - Wed, Apr 8
Delta Logo
6:00 am - 8:35 am
PHL
-
SOU
21h 35m
2 stops
Delta Logo
9:05 am - 9:23 pm
SOU
-
PHL
17h 18m
2 stops
$830Delta
Mon, Mar 30 - Sun, Apr 5
Delta Logo
12:26 pm - 8:35 am
PHL
-
SOU
15h 09m
2 stops
Delta Logo
5:20 pm - 4:53 pm
SOU
-
PHL
28h 33m
2 stops
$831Delta
Sun, Apr 26 - Mon, May 11
Air Europa Logo
12:20 pm - 8:35 am
PHL
-
SOU
15h 15m
2 stops
Air Europa Logo
5:20 pm - 4:17 pm
SOU
-
PHL
27h 57m
2 stops
$880Air Europa
Sun, Apr 26 - Mon, May 11
Aer Lingus Logo
8:25 am - 8:40 am
PHL
-
SOU
19h 15m
2 stops
Aer Lingus Logo
8:00 pm - 6:55 pm
SOU
-
PHL
27h 55m
1 stop
$891Aer Lingus
Sun, Apr 26 - Mon, May 11
Aer Lingus Logo
8:25 pm - 4:35 pm
PHL
-
SOU
15h 10m
1 stop
Aer Lingus Logo
8:00 pm - 6:55 pm
SOU
-
PHL
27h 55m
1 stop
$898Aer Lingus
Booking Insights

KAYAK's insights & trends for Philadelphia to Southampton flights

Get data-powered insights and trends into flights from Philadelphia to Southampton to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Philadelphia to Southampton?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Philadelphia to Southampton were found on Delta ($766) and Air Europa ($880).

Find deals

Good to know

Cheapest flight$766
Flight from Philadelphia to Southampton

When to book flights from Philadelphia to Southampton

Are your dates flexible? Find out the best times to travel from Philadelphia to Southampton based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Southampton

  • What is the cheapest flight from Philadelphia to Southampton?

    In the last 3 days, the lowest price for a flight from Philadelphia to Southampton was $766 for a round-trip ticket.

  • Do I need a passport to fly between Philadelphia and Southampton?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Philadelphia and on arrival in Southampton.

  • Which airports will I be using when flying from Philadelphia to Southampton?

    Philadelphia and Southampton are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Southampton Eastleigh.

  • Which aircraft models fly most regularly from Philadelphia to Southampton?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Philadelphia to Southampton?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Southampton.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Southampton?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Southampton from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Southampton?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Southampton with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SOU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Southampton?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Southampton from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Philadelphia to Southampton

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Southampton. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Southampton? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1441 reviews
6.6Food
6.9Entertainment
8.0Crew
7.4Boarding
7.1Comfort
Airline reviews

One of the best flight experiences I've have had in along time. Would fly with them again.

10.0 ExcellentDoug, Jan 2026
DUB - MCO
Read more Aer Lingus reviews

One of the best flight experiences I've have had in along time. Would fly with them again.

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

Well, I think we left close to on time. Crew was “eh”.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

Fast and sensible boarding was absolutely amazing. But extortionate wifi and seats that barely moved, making me unable to sleep, didn't do a lot of favors.

I liked the front row seats. A lot of leg room. The check-in window needs to be longer

My flights with Aer Lingus were very good and I will definitely fly with them. Again in future trips to Ireland and Scotland.

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

Information on your arrival and departure airports

Philadelphia (PHL)
Southampton (SOU)