ISP - TYS

$533 Find Cheap Flights from Islip to Knoxville

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Knoxville departing on 10/10. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Knoxville, 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 Knoxville, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to Knoxville (ISP-TYS)

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

Fri, Oct 10 - Mon, Oct 13
Multiple Airlines Logo
4:58 pm - 11:36 pmISP-TYS
6h 38m1 stop
Multiple Airlines Logo
5:26 pm - 8:42 pmTYS-ISP
27h 16m2 stops
$533Multiple Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Multiple Airlines Logo
2:25 pm - 10:04 amISP-TYS
19h 39m2 stops
Multiple Airlines Logo
9:45 am - 7:06 pmTYS-ISP
9h 21m1 stop
$536Multiple Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Multiple Airlines Logo
9:47 pm - 1:03 pmISP-TYS
15h 16m1 stop
Multiple Airlines Logo
9:01 pm - 8:07 pmTYS-ISP
23h 06m2 stops
$574Multiple Airlines
Find Deal
Sun, Oct 12 - Sun, Oct 19
Multiple Airlines Logo
9:47 pm - 1:03 pmISP-TYS
15h 16m1 stop
Multiple Airlines Logo
9:00 am - 7:45 pmTYS-ISP
10h 45m1 stop
$667Multiple Airlines
Find Deal
Thu, Oct 9 - Mon, Oct 13
Frontier Logo
9:37 pm - 7:32 pmISP-TYS
21h 55m2 stops
Frontier Logo
8:17 pm - 9:44 amTYS-ISP
13h 27m2 stops
$777Frontier
Find Deal
Fri, Nov 7 - Mon, Nov 10
Multiple Airlines Logo
12:40 pm - 2:43 pmISP-TYS
26h 03m2 stops
Multiple Airlines Logo
5:52 pm - 11:04 amTYS-ISP
17h 12m2 stops
$1,191Multiple Airlines
Find Deal

Everything you should know

Cheapest round-trip
$533
Multiple Airlines
Fri 10/10Mon 10/13
ISP - TYS • 1 stop
Cheapest one-way
Multiple Airlines
Tue 9/16
ISP - TYS • multi-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Knoxville!
Booking Insights

Good to know

Cheapest flight$533
Flight from Islip to Knoxville

When to book flights from Islip to Knoxville

Are your dates flexible? Find out the best times to travel from Islip to Knoxville 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 Islip to Knoxville

  • What is the cheapest flight from Islip to Knoxville?

    In the last 3 days, the lowest price for a flight from Islip to Knoxville was $533 for a round-trip ticket.

  • Do I need a passport to fly between Islip and Knoxville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Islip to Knoxville?

    Islip and Knoxville are both served by 1 main airport. You will leave Islip from Islip Long Island and will be arriving at Knoxville McGhee Tyson.

  • Which aircraft models fly most regularly from Islip to Knoxville?

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

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

    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 Knoxville.

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

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

    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 Knoxville with an airline and back to Islip with another airline. Booking your flights between Islip and TYS 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 Islip to Knoxville?

    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 Knoxville from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Islip (ISP)
Knoxville (TYS)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.