ISP - TYS

$169 Find Cheap Flights from Islip to Knoxville

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 Knoxville departing on 5/18. 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 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
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Everything you should know

Cheapest round-trip
$361
Multiple Airlines
Thu 1/1Mon 1/5
ISP - TYS • 1 stop
Cheapest one-way
$169
Southwest
Mon 5/18
ISP - TYS • 1 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!
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

Thu, Jan 1 - Mon, Jan 5
Multiple Airlines Logo
4:40 pm - 8:33 am
ISP
-
TYS
15h 53m1 stop
Multiple Airlines Logo
7:15 am - 8:07 pm
TYS
-
ISP
12h 52m2 stops
$361Multiple Airlines
Thu, Jan 1 - Mon, Jan 5
Multiple Airlines Logo
4:40 pm - 8:33 am
ISP
-
TYS
15h 53m1 stop
Multiple Airlines Logo
6:00 am - 1:09 pm
TYS
-
ISP
7h 09m1 stop
$369Multiple Airlines
Mon, Jun 15 - Mon, Jun 22
Southwest Logo
5:50 pm - 10:20 pm
ISP
-
TYS
4h 30m1 stop
Southwest Logo
7:30 am - 11:50 am
TYS
-
ISP
4h 20m1 stop
$377Southwest
Mon, Jun 15 - Mon, Jun 22
Southwest Logo
5:50 pm - 10:20 pm
ISP
-
TYS
4h 30m1 stop
Southwest Logo
2:20 pm - 11:35 pm
TYS
-
ISP
9h 15m2 stops
$382Southwest
Mon, Jun 15 - Mon, Jun 22
Southwest Logo
5:20 am - 3:45 pm
ISP
-
TYS
10h 25m2 stops
Southwest Logo
2:20 pm - 11:35 pm
TYS
-
ISP
9h 15m2 stops
$387Southwest
Booking Insights

Good to know

Cheapest flight$169
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 $169 for a one-way ticket and $361 for a round-trip.

  • 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)