Cheap flights from Nashville to Islip

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Find the cheapest month or even day of the year to fly to Islip

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Flight deals from Nashville to Islip

Looking for a cheap last-minute deal or the best round-trip flight from Nashville Airport to Islip Airport? If you want to travel next month, round-trip fares start from $342. Find the lowest prices on one-way and round-trip tickets right here.

Islip.$306 per passenger.Departing Mon, Aug 24, returning Tue, Sep 8.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Nashville on Mon, Aug 24, arriving in Islip.Inbound indirect flight with Frontier Airlines, departing from Islip on Tue, Sep 8, arriving in Nashville.Price includes taxes and charges.From $306, select.

Islip.$338 per passenger.Departing Sat, Sep 12, returning Mon, Sep 14.Round-trip flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departing from Nashville on Sat, Sep 12, arriving in Islip.Inbound indirect flight with Southwest Airlines, departing from Islip on Mon, Sep 14, arriving in Nashville.Price includes taxes and charges.From $338, select.

Islip.$342 per passenger.Departing Fri, Jul 10, returning Mon, Jul 13.Round-trip flight with Allegiant Air and jetBlue.Outbound indirect flight with Allegiant Air, departing from Nashville on Fri, Jul 10, arriving in Islip.Inbound indirect flight with jetBlue, departing from Islip on Mon, Jul 13, arriving in Nashville.Price includes taxes and charges.From $342, select.

Islip.$356 per passenger.Departing Sun, Aug 9, returning Sun, Aug 16.Round-trip flight with Allegiant Air and jetBlue.Outbound indirect flight with Allegiant Air, departing from Nashville on Sun, Aug 9, arriving in Islip.Inbound indirect flight with jetBlue, departing from Islip on Sun, Aug 16, arriving in Nashville.Price includes taxes and charges.From $356, select.

Islip.$383 per passenger.Departing Thu, Jul 30, returning Sun, Aug 2.Round-trip flight with Allegiant Air and jetBlue.Outbound indirect flight with Allegiant Air, departing from Nashville on Thu, Jul 30, arriving in Islip.Inbound indirect flight with jetBlue, departing from Islip on Sun, Aug 2, arriving in Nashville.Price includes taxes and charges.From $383, select.

Islip.$474 per passenger.Departing Thu, Jun 25, returning Mon, Jun 29.Round-trip flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departing from Nashville on Thu, Jun 25, arriving in Islip.Inbound indirect flight with Frontier Airlines, departing from Islip on Mon, Jun 29, arriving in Nashville.Price includes taxes and charges.From $474, select.

Find the cheapest month to fly from Nashville to Islip

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Nashville to Islip flights are currently cheapest in September.

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Nashville to Islip: Alternative routes

Compare routes from Nashville to Islip below. You may find an airport to fly into that's cheaper, faster, or easier than Islip.

Nashville to Islip: Flight information

The things to know before you go.

Cheapest flight found	$306
Cheapest month to fly	August

Finding cheap flights from Nashville to Islip: Frequently asked questions

How much are round-trip flights from Nashville to Islip?

The best price we found for a round-trip flight from Nashville to Islip is $306. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Nashville to Islip?

Currently, there are no airlines that fly direct from Nashville to Islip. But we found flights with one or more stops from $306.

How many flights are there a week from Nashville to Islip?

There are no flights flying from Nashville to Islip, as of June 2026.

When is the cheapest time to fly from Nashville to Islip?

The cheapest month to fly from Nashville to Islip is usually August.

Which upcoming date is cheapest to fly from Nashville Airport to Islip Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Nashville Airport to Islip Airport on Monday, August 24, 2026.

Can I get a direct flight from Nashville Airport to Islip Airport?

No airlines currently offer direct flights between Nashville Airport and Islip Airport. Most routes have one or more stops.

How can I find the best flight deal to Islip?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Islip but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Islip?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Islip is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Nashville Airport to Islip?

Currently, Allegiant Air offers the cheapest flight tickets to Islip.

Flying from Nashville Airport (BNA) to Islip Airport (ISP): what you need to know

Get to the airport on time so you don't miss your BNA to ISP flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.
During popular months such as July, it's best to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead of an international flight whenever you're flying during a peak period in general.
If you'd like to include a stop along the way, just deselect 'Direct flights only' when searching for your ticket from Nashville Airport to Islip Airport. These are the top stopovers between BNA and ISP:
- Baltimore Washington International Airport
- Charleston Airport
- Myrtle Beach International Airport

How to find the cheapest flights from Nashville Airport (BNA) to Islip Airport (ISP)

At the moment, $118 is the cheapest price we've seen for a one-way Nashville Airport to Islip Airport flight. The best price for a return plane ticket is $306. Bear in mind that fares may change due to demand when booking.
To pick up cheap tickets from BNA to ISP, book as early as you can. Airlines usually offer lower fares when flights are first released.
If you're willing to be flexible with your travel plans, use the 'Whole month' search function. It'll show you the lowest price in each month when searching for your flight from Nashville Airport to Islip Airport.
You don't need to check back in every day to see if fares have gone down when you create a Price Alert. We'll update you as soon as there's a better deal on cheap flights from BNA to ISP.
Tailor your trip using filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' flights from Nashville Airport to Islip Airport.

Handy information about Nashville Airport (BNA)

You'll find BNA at One Terminal Drive, Suite 501.
Of the departures from Nashville Airport, 77% touch down on time at their destination.
Central Nashville to Nashville Airport is around 14 kilometers. Depending on traffic, it'll take you about 20 minutes to get there if you're driving, catching a cab or ride-sharing.
Catching public transport? Expect a trip time of around 45 minutes.
Taking an early flight from Nashville Airport to Islip Airport? Avoid rushing to the terminal (and get some extra shut-eye) by choosing one of these stays close to BNA:

Arriving at Islip Airport (ISP)

The last thing you need is a long trip to your hotel if you're arriving on a late Nashville Airport to Islip Airport flight. Stay at one of these accommodation options near ISP instead:
Explore without limits with a Islip Airport rental car. Pick up a set of wheels from Enterprise, Budget or Avis and see more of Islip and beyond.
Reserve your ride from Islip Airport several weeks ahead to get the lowest price. If you're traveling during peak season, it's smart to book even earlier.

Getting from Islip Airport (ISP) to central Islip

You'll find ISP at 100 Arrivals Avenue.
Islip Airport is approximately 6 kilometers from the center of Islip. Driving there takes about 10 minutes.
If you're taking public transport, expect a journey of roughly 30 minutes.

When to fly to Islip Airport (ISP)

The quietest month for a flight from Nashville Airport to Islip Airport is December, while July is the most popular. Choose the best time to visit Islip based on whether you prefer a bustling atmosphere or a more laid-back vibe.
The warmest month in Islip is July, with temperatures ranging between 19ºC (66ºF) and 29ºC (84ºF). Lock in your flights from Nashville Airport to Islip Airport in this month if this is the type of weather you enjoy.
January has average temperatures of between -4ºC (25ºF) and 8ºC (46ºF). Look for cheap tickets from BNA to ISP sometime around then if you like traveling in cooler conditions.

Explore more of the United States

You've visited Islip, now it's time to discover other parts of the United States. Travel around 64 kilometers west to New York to check off its top sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, you've got a jam-packed schedule ahead.
Philadelphia is another standout destination in the United States and is around 193 kilometers south-west of Islip. No journey is complete without visiting Independence Hall, Liberty Bell and Philadelphia Museum of Art.