Which airports can I use when flying from Islip to Knoxville?

Flights from Islip to Knoxville usually depart from Islip Long Island (ISP) and arrive at Knoxville McGhee Tyson (TYS).

What cabin classes can I book on flights from Islip to Knoxville?

Only Economy Class is available on flights from Islip to Knoxville.

Which airports do connecting flights from Islip to Knoxville pass through?

Most connecting flights from Islip to Knoxville pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Can I save money by using flexible dates for flights from Islip to Knoxville?

Yes. Being flexible with your travel dates can save you up to 56% on the Islip to Knoxville route. Tuesday is the cheapest departure day at $294 round-trip on average, while Wednesday is the most expensive at $656, a difference of $362. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Islip to Knoxville?

A nonstop flight from Islip to Knoxville takes 0h 00m, covering 682 miles.

Do I need a passport to fly from Islip to Knoxville?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Have flight prices from Islip to Knoxville changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $275 to $1,085. That means the highest observed fare was about 4x higher than the lowest one.

How are flight prices from Islip to Knoxville looking right now?

One-way fares from Islip to Knoxville are currently lower than usual. Average one-way flight prices are about $206, which is 10% below the typical average for this route.

What car rental options are available at Knoxville McGhee Tyson Airport (TYS)?

Knoxville McGhee Tyson Airport (TYS) hosts 5 major car rental companies, with daily rates starting from around $33 for economy cars. Top options include: • Budget • Alamo • Thrifty • Enterprise Rent-A-Car • Payless

How much should I expect to pay for a Islip to Knoxville flight?

Round-trip flights from Islip to Knoxville range from $332 to $531, with an average of $400 over the past 12 months. Anything below $332 counts as a good deal.

What is the cheapest airline to fly from Islip to Knoxville?

Southwest ($275) offered the cheapest round-trip ticket from Islip to Knoxville in the last 5 days.

What is the cheapest layover airport when flying from Islip to Knoxville?

Flights via Baltimore/Washington (BWI) offer the most affordable fares, with an average round-trip price of $450. Based on KAYAK data over the past 3 months.

When flying from Islip to Knoxville which airport offers the shortest layover?

Baltimore/Washington (BWI) had the shortest average connection time for Islip to Knoxville layovers at 192 minutes over the past 3 months.

$275 CHEAP FLIGHTS from Islip to Knoxville (ISP - TYS)

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Filter searches by price, airline and more to find your best flights.

Cheapest round-trip

$275

Typical prices: $332-$531

Southwest

Fri 12/7Wed 12/12

ISP - TYS • 1 stop

Cheapest one-way

$194

Typical prices: $168-$443

Southwest

Sun 3/4

ISP - TYS • 1 stop

Nonstop flights

Not available

There are currently no direct flights between Islip and Knoxville. You'll need to take a connecting flight to reach the destination.

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Flight Deals

Cheap Flights from Islip to Knoxville (ISP-TYS)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Islip to Knoxville

Mon, Dec 7 - Sat, Dec 12

6:30 am - 4:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

10h 10m1 stop Orlando

8:15 am - 2:55 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

6h 40m1 stop Baltimore/Washington

$275Southwest

Mon, Dec 7 - Sat, Dec 12

6:05 am - 4:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

10h 35m2 stops Baltimore/Washington Orlando

8:15 am - 12:05 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

3h 50m1 stop Baltimore/Washington

$335Southwest

Mon, Dec 7 - Sat, Dec 12

6:05 am - 4:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

10h 35m2 stops Baltimore/Washington Orlando

2:50 pm - 9:45 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

6h 55m2 stops Nashville Intl Baltimore/Washington

$407Southwest

Tue, Oct 6 - Tue, Oct 13

6:05 am - 4:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

10h 35m2 stops Baltimore/Washington Orlando

1:00 pm - 8:00 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

7h 00m2 stops Orlando Baltimore/Washington

$437Southwest

Tue, Oct 6 - Tue, Oct 13

6:05 am - 4:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

10h 35m2 stops Baltimore/Washington Orlando

8:20 am - 12:10 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

3h 50m1 stop Baltimore/Washington

$444Southwest

Sat, Sep 26 - Wed, Sep 30

12:00 pm - 4:48 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

28h 48m2 stops Raleigh-Durham Jacksonville

10:28 am - 4:58 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

6h 30m1 stop Orlando

$453Multiple Airlines

Sat, Dec 19 - Mon, Dec 21

12:50 pm - 9:35 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

8h 45m1 stop Baltimore/Washington

8:00 am - 4:20 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

8h 20m1 stop Baltimore/Washington

$460Southwest

Sat, Sep 26 - Wed, Sep 30

2:00 pm - 8:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

6h 40m1 stop Orlando

8:05 am - 12:10 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

4h 05m1 stop Baltimore/Washington

$467Southwest

Sat, Sep 26 - Wed, Sep 30

11:55 am - 8:40 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

8h 45m2 stops Baltimore/Washington Orlando

7:00 am - 2:55 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

7h 55m2 stops Nashville Intl Orlando

$477Southwest

Thu, Oct 22 - Sun, Oct 25

6:25 pm - 12:14 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

17h 49m1 stop Orlando

7:00 am - 5:30 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

10h 30m1 stop Orlando Sanford Intl

$510Multiple Airlines

Booking Insights

Price, demand and travel trends for Islip to Knoxville flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Islip to Knoxville with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Islip to Knoxville?

Round-trip flights from Islip to Knoxville start at $275. Prices are below average for this route right now, with typical round-trip fares ranging from $332 to $531. The lowest price found in the past 5 days was $275 on Southwest.

Find deals

Cheapest flight	$194

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.

Which airports can I use when flying from Islip to Knoxville?
Flights from Islip to Knoxville usually depart from Islip Long Island (ISP) and arrive at Knoxville McGhee Tyson (TYS).
What cabin classes can I book on flights from Islip to Knoxville?
Only Economy Class is available on flights from Islip to Knoxville.
Which airports do connecting flights from Islip to Knoxville pass through?
Most connecting flights from Islip to Knoxville pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.
Can I save money by using flexible dates for flights from Islip to Knoxville?
Yes. Being flexible with your travel dates can save you up to 56% on the Islip to Knoxville route. Tuesday is the cheapest departure day at $294 round-trip on average, while Wednesday is the most expensive at $656, a difference of $362. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How long is a flight from Islip to Knoxville?
A nonstop flight from Islip to Knoxville takes 0h 00m, covering 682 miles.
Do I need a passport to fly from Islip to Knoxville?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
Have flight prices from Islip to Knoxville changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $275 to $1,085. That means the highest observed fare was about 4x higher than the lowest one.
How are flight prices from Islip to Knoxville looking right now?
One-way fares from Islip to Knoxville are currently lower than usual. Average one-way flight prices are about $206, which is 10% below the typical average for this route.
What car rental options are available at Knoxville McGhee Tyson Airport (TYS)?
Knoxville McGhee Tyson Airport (TYS) hosts 5 major car rental companies, with daily rates starting from around $33 for economy cars. Top options include:
• Budget
• Alamo
• Thrifty
• Enterprise Rent-A-Car
• Payless
How much should I expect to pay for a Islip to Knoxville flight?
Round-trip flights from Islip to Knoxville range from $332 to $531, with an average of $400 over the past 12 months. Anything below $332 counts as a good deal.

If your dates can be flexible, aim for a Tuesday departure instead of Wednesday. On this route, Tuesday flights average $294 - about $362 less than Wednesday (55% savings) based on the last 12 months.

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ISP - TYS

$275 Find Cheap Flights from Islip to Knoxville - Compare and Save

Everything you should know

Cheap Flights from Islip to Knoxville (ISP-TYS)

Recent round-trip flight deals from Islip to Knoxville

Recent one-way flight deals from Islip to Knoxville

Recent last minute flight deals from Islip to Knoxville

Price, demand and travel trends for Islip to Knoxville flights

How much is a round-trip flight from Islip to Knoxville?

What is the cheapest airline to fly from Islip to Knoxville?

What is the cheapest layover airport when flying from Islip to Knoxville?

When flying from Islip to Knoxville which airport offers the shortest layover?

Key details for Islip to Knoxville flights

Cheapest flight

When to book flights from Islip to Knoxville

Your Islip to Knoxville flight questions, answered

Your guide to booking Islip to Knoxville flights

More options for your flight from Islip to Knoxville

Complete your trip to Knoxville with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Islip to Knoxville

Find direct flights to and from Islip and Knoxville

Flights from domestic origins to Knoxville

Flights to other popular destinations

Find deals for your return flight