$91 Find Cheap Flights from Islip to Tennessee

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Tennessee departing on 2/19. 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 Tennessee

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Tennessee, 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 Islip to Tennessee, as well as popular online travel agencies
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Cheap Flights from Islip to Tennessee

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Nashville
Nashville1 stop$171
Knoxville
Knoxville1 stop$308
Nashville
Nashville1 stop$171
Knoxville
Knoxville1 stop$308

Book Cheap Islip to Tennessee Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Tennessee 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 Islip to Tennessee

Thu, Feb 26 - Sun, Mar 1
Frontier Logo
3:34 pm - 8:05 am
ISP
-
BNA
17h 31m
1 stop
Frontier Logo
2:25 pm - 7:38 am
BNA
-
ISP
16h 13m
1 stop
$171Frontier
Mon, Jan 26 - Fri, Jan 30
Multiple Airlines Logo
7:43 pm - 8:29 am
ISP
-
BNA
13h 46m
1 stop
Multiple Airlines Logo
9:25 am - 8:47 pm
BNA
-
ISP
10h 22m
1 stop
$203Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
Frontier Logo
3:34 pm - 8:05 am
ISP
-
BNA
17h 31m
1 stop
Frontier Logo
2:25 pm - 7:38 am
BNA
-
ISP
16h 13m
1 stop
$204Frontier
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
8:45 pm - 8:29 am
ISP
-
BNA
36h 44m
2 stops
Multiple Airlines Logo
6:15 am - 2:39 pm
BNA
-
ISP
7h 24m
1 stop
$228Multiple Airlines
Sun, Feb 8 - Wed, Feb 11
Multiple Airlines Logo
9:25 am - 7:25 am
ISP
-
BNA
23h 00m
2 stops
Multiple Airlines Logo
9:25 am - 2:39 pm
BNA
-
ISP
28h 14m
1 stop
$239Multiple Airlines
Mon, Jan 26 - Fri, Jan 30
Multiple Airlines Logo
7:43 pm - 8:29 am
ISP
-
BNA
13h 46m
1 stop
Multiple Airlines Logo
8:40 am - 8:47 pm
BNA
-
ISP
11h 07m
2 stops
$241Multiple Airlines
Tue, May 19 - Tue, May 26
Southwest Logo
4:10 pm - 8:50 pm
ISP
-
TYS
4h 40m
1 stop
Southwest Logo
8:15 am - 11:55 am
TYS
-
ISP
3h 40m
1 stop
$308Southwest
Tue, May 19 - Tue, May 26
Southwest Logo
9:00 am - 5:10 pm
ISP
-
TYS
8h 10m
2 stops
Southwest Logo
8:15 am - 11:55 am
TYS
-
ISP
3h 40m
1 stop
$313Southwest
Tue, May 19 - Tue, May 26
Southwest Logo
9:00 am - 5:10 pm
ISP
-
TYS
8h 10m
2 stops
Southwest Logo
12:50 pm - 10:10 pm
TYS
-
ISP
9h 20m
2 stops
$319Southwest
Thu, Apr 16 - Sun, Apr 19
Southwest Logo
4:30 pm - 9:15 pm
ISP
-
TYS
4h 45m
1 stop
Southwest Logo
12:15 pm - 11:45 pm
TYS
-
ISP
11h 30m
1 stop
$324Southwest
Booking Insights

KAYAK's insights & trends for Islip to Tennessee flights

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

What is the cheapest month to fly from Islip to Tennessee?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to Tennessee, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Islip to Tennessee is August, when tickets cost $272 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $547 and $482 respectively.

Good to know

Low seasonJanuary
Cheapest flight$91
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Islip to Nashville

FAQs - booking Tennessee flights

  • How does KAYAK find such low prices on flights from Islip to Tennessee?

    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 Islip to Tennessee.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Islip to Tennessee 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 Islip to Tennessee?

    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 from Islip to Tennessee with an airline and back with another airline.

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

    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 from Islip to Tennessee 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 Islip to Tennessee

 
See real verified KAYAK customer reviews for airlines flying from Islip to Tennessee. 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 Islip to Tennessee? 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.
8.0
SouthwestOverall score based on 4257 reviews
7.0Food
7.5Entertainment
8.6Crew
8.1Boarding
8.0Comfort
Airline reviews

3 hour delay. Had to change plans and was still delayed.

2.0 MediocreAnonymous, Jan 2026
SFO - SAN
Read more Southwest reviews

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

We got exit row seats both flights. Everything was running on time

The flight crew was extremely rude and especially not helpful when our flight was delayed.

Pretty seamless, just a tad bit late in taking off and landing.

Flight was fine other than there was a gate change that I was not notified of. By chance I happened to check my phone and saw the change, otherwise, we would have missed our connecting flight.

Haven’t flown on SW in years. Flight was on time departing and arriving. Served vegan butter onion flavored pretzels which were bad. Coke served was in a tiny paper cup. Crew was not engaging. Felt like they were going through the motions. Old plane, tight seats and no leg room.

Check-in, Boarding and flight were smooth. All the employees and crew was very nice and funny. They gave the kids crayons and workbooks to keep them occupied which was a big win. I’ve flown Southwest many times and that’s the first time I’ve seen that and it is a great addition.

Everything you need to know for your flight from Islip to Tennessee

Information on your arrival and departure airports