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

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

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

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

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

Most connecting flights from Knoxville to Islip 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 Knoxville to Islip?

On the Knoxville to Islip route, being flexible with your departure day can save you up to 22%. Saturday is the cheapest day at $349 round-trip on average, while Friday is the most expensive at $446: a $97 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

How long is a flight from Knoxville to Islip?

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

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

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 Knoxville to Islip 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 $252 to $856. That means the highest observed fare was about 3x higher than the lowest one.

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

One-way fares from Knoxville to Islip are currently lower than usual. Average one-way flight prices are about $191, which is 26% below the typical average for this route.

What car rental options are available at Islip Long Island Airport (ISP)?

Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include: • Budget • Enterprise Rent-A-Car • Avis • National • Empire Rent A Car

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

Round-trip flights from Knoxville to Islip range from $366 to $446, with an average of $406 over the past 12 months. Anything below $366 counts as a good deal.

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

Southwest ($252) offered the cheapest round-trip ticket from Knoxville to Islip in the last 5 days.

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

Flights via Baltimore/Washington (BWI) offer the most affordable fares, with an average round-trip price of $408. Based on KAYAK data over the past 3 months.

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

Baltimore/Washington (BWI) had the shortest average connection time for Knoxville to Islip layovers at 184 minutes over the past 3 months.

$126 CHEAP FLIGHTS from Knoxville to Islip (TYS - ISP)

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Cheapest round-trip

$252

Typical prices: $366-$446

Southwest

Wed 10/31Wed 11/14

TYS - ISP • 1 stop

Cheapest one-way

$126

Typical prices: $184-$498

Southwest

Sun 12/9

TYS - ISP • 1 stop

Nonstop flights

Not available

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

Insights

When to travel

July

Cheapest • 19% price drop

July

Most popular

Good to know

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We hope you love your trip to Islip!

Flight Deals

Cheap Flights from Knoxville to Islip (TYS-ISP)

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

Round-trip

One-way

Recent round-trip flight deals from Knoxville to Islip

Sat, Oct 31 - Sat, Nov 14

8:25 am - 11:55 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

3h 30m1 stop Baltimore/Washington

3:30 pm - 7:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 20m1 stop Baltimore/Washington

$252Southwest

Sat, Oct 31 - Sat, Nov 7

8:25 am - 11:55 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

3h 30m1 stop Baltimore/Washington

12:45 pm - 7:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

7h 05m1 stop Baltimore/Washington

$252Southwest

Sat, Oct 31 - Sat, Nov 7

6:40 am - 5:20 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

10h 40m2 stops Nashville Intl Baltimore/Washington

3:30 pm - 7:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 20m1 stop Baltimore/Washington

$263Southwest

Sat, Oct 31 - Sat, Nov 14

6:40 am - 5:20 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

10h 40m2 stops Nashville Intl Baltimore/Washington

3:30 pm - 7:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 20m1 stop Baltimore/Washington

$263Southwest

Sat, Oct 31 - Sat, Nov 14

6:40 am - 5:20 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

10h 40m2 stops Nashville Intl Baltimore/Washington

6:00 am - 5:45 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

11h 45m2 stops Baltimore/Washington Nashville Intl

$274Southwest

Thu, Oct 29 - Sat, Oct 31

8:20 am - 2:30 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

6h 10m1 stop Baltimore/Washington

6:00 am - 12:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

6h 50m1 stop Baltimore/Washington

$275Southwest

Fri, Oct 30 - Sat, Nov 14

8:20 am - 2:30 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

6h 10m1 stop Baltimore/Washington

3:30 pm - 7:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 20m1 stop Baltimore/Washington

$286Southwest

Fri, Oct 30 - Sun, Nov 15

9:41 pm - 11:20 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

13h 39m2 stops Tampa St. Petersburg Raleigh-Durham

6:33 pm - 12:48 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

18h 15m1 stop Orlando

$324Multiple Airlines

Fri, Oct 30 - Sun, Nov 15

5:41 pm - 5:31 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

23h 50m1 stop Orlando Sanford Intl

6:33 pm - 7:59 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

25h 26m1 stop Orlando

$337Multiple Airlines

Sun, Nov 8 - Sun, Nov 22

7:00 am - 11:20 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

52h 20m2 stops Orlando Sanford Intl Raleigh-Durham

4:40 pm - 8:39 amISP Islip Long Island-TYS Knoxville McGhee Tyson

15h 59m1 stop Orlando

$463Multiple Airlines

Booking Insights

Price, demand and travel trends for Knoxville to Islip flights

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

Prices

Airlines

Layovers

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

Round-trip flights from Knoxville to Islip start at $252. Prices are below average for this route right now, with typical round-trip fares ranging from $366 to $446. The lowest price found in the past 5 days was $252 on Southwest.

What's the cheapest day of the week to fly from Knoxville to Islip?

Saturday is the cheapest day of the week to fly from Knoxville to Islip, it is 15% cheaper than the average day. Friday is the most expensive day with flight prices 9% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Low season	January
High season	July
Cheapest flight	$126

Most popular time to fly and prices are also 19% lower on average.

Flight from Knoxville to Islip

When to book flights from Knoxville to Islip

Are your dates flexible? Find out the best times to travel from Knoxville to Islip 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 Knoxville to Islip?
Flights from Knoxville to Islip usually depart from Knoxville McGhee Tyson (TYS) and arrive at Islip Long Island (ISP).
What cabin classes can I book on flights from Knoxville to Islip?
Only Economy Class is available on flights from Knoxville to Islip.
Which airports do connecting flights from Knoxville to Islip pass through?
Most connecting flights from Knoxville to Islip 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 Knoxville to Islip?
On the Knoxville to Islip route, being flexible with your departure day can save you up to 22%. Saturday is the cheapest day at $349 round-trip on average, while Friday is the most expensive at $446: a $97 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How long is a flight from Knoxville to Islip?
A nonstop flight from Knoxville to Islip takes 0h 00m, covering 682 miles.
Do I need a passport to fly from Knoxville to Islip?
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 Knoxville to Islip 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 $252 to $856. That means the highest observed fare was about 3x higher than the lowest one.
How are flight prices from Knoxville to Islip looking right now?
One-way fares from Knoxville to Islip are currently lower than usual. Average one-way flight prices are about $191, which is 26% below the typical average for this route.
What car rental options are available at Islip Long Island Airport (ISP)?
Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include:
• Budget
• Enterprise Rent-A-Car
• Avis
• National
• Empire Rent A Car
How much should I expect to pay for a Knoxville to Islip flight?
Round-trip flights from Knoxville to Islip range from $366 to $446, with an average of $406 over the past 12 months. Anything below $366 counts as a good deal.

If your dates can be flexible, aim for a Saturday departure instead of Friday. On this route, Saturday flights average $349 - about $97 less than Friday (22% savings) based on the last 12 months.
If you can choose when to travel, plan your Knoxville to Islip trip for July. Fares historically average $331 round-trip in that month - typically $240 less than the most expensive month, which is April (based on the last 12 months).

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TYS - ISP

$126 Find Cheap Flights from Knoxville to Islip - Compare and Save

Everything you should know

Cheap Flights from Knoxville to Islip (TYS-ISP)

Recent round-trip flight deals from Knoxville to Islip

Recent one-way flight deals from Knoxville to Islip

Price, demand and travel trends for Knoxville to Islip flights

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

What's the cheapest day of the week to fly from Knoxville to Islip?

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

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

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

Key details for Knoxville to Islip flights

Low season

High season

Cheapest flight

When to book flights from Knoxville to Islip

Your Knoxville to Islip flight questions, answered

Your guide to booking Knoxville to Islip flights

More options for your flight from Knoxville to Islip

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

Information on your arrival and departure airports

Cabin class types available on flights from Knoxville to Islip

Find direct flights to and from Knoxville and Islip

Flights from domestic origins to Islip

Flights to other popular destinations

Find deals for your return flight