Cheap Flights from Islip (ISP) to Southampton (SOU)

Popular airlines from MacArthur Airport (ISP) to Southampton (SOU)

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Cheap Flights from Islip to Southampton (ISP-SOU)

Prices were available within the past 7 days and start at for one-way flights and $2,576 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Sat, Aug 30 - Sat, Sep 6
ISP
Islip
SOU
Southampton
$2,576 Roundtrip, found 5 days ago
$2,576
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Sat, Aug 30 from Islip to Southampton, returning Sat, Sep 6, priced at $2,576 found 5 days ago
JetBlue Airways
Sat, Aug 30 - Sat, Sep 6
ISP
Islip
SOU
Southampton
$2,633 Roundtrip, found 5 days ago
$2,633
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Sat, Aug 30 from Islip to Southampton, returning Sat, Sep 6, priced at $2,633 found 5 days ago
JetBlue Airways
Sat, Aug 30 - Sat, Sep 6
ISP
Islip
SOU
Southampton
$2,782 Roundtrip, found 5 days ago
$2,782
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Sat, Aug 30 from Islip to Southampton, returning Sat, Sep 6, priced at $2,782 found 5 days ago
JetBlue Airways
Sat, Aug 30 - Sat, Sep 6
ISP
Islip
SOU
Southampton
$2,839 Roundtrip, found 5 days ago
$2,839
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Sat, Aug 30 from Islip to Southampton, returning Sat, Sep 6, priced at $2,839 found 5 days ago
Flights from Islip (ISP) to Southampton (SOU)
Origin airport
MacArthur
Destination airport
Southampton
Roundtrip price
$2,576
Distance
3381 mi

Islip to Southampton Flights

The cheapest times to fly from Islip to Southampton

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Southampton are during the month of August. You can find some of the cheapest flights from Islip to Southampton with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Southampton

Sunday is one of the best days to book for cheap flights from Islip to Southampton: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to Southampton

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Southampton in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Southampton flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Southampton airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Southampton Airport (SOU) cost?
Discover the latest flight deals from ISP to SOU by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to SOU?
The cheapest flights from ISP to SOU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ISP to SOU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ISP to SOU. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Southampton Airport (SOU)?
You'll need to catch a flight with a layover when traveling from MacArthur Airport (ISP) to Southampton Airport (SOU). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from ISP to SOU?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Southampton Airport (SOU)?
To avoid potential delays on the MacArthur Airport (ISP) to Southampton Airport (SOU) route, aim to travel before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Southampton Airport (SOU) last-minute?
Booking your ticket from ISP to SOU shortly before your trip is usually more expensive. However, if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book an ISP to SOU flight and hotel package?
Opting for an ISP to SOU flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Southampton Airport (SOU)?
In most cases, you're able to cancel or reschedule your ISP to SOU flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.