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.

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

Yes. Flexible dates can save you up to 26% on flights from Knoxville to Islip. Saturday is the cheapest departure day at $349 round-trip on average, while Tuesday is the most expensive at $466, a difference of $117. 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 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 $380 to $930. That means the highest observed fare was about 2x 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 higher than usual. Average one-way flight prices are about $559, which is 116% above 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 averaging $105 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 $456, with an average of $406 over the past 12 months. Anything below $366 counts as a good deal.

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

Round-trip flights from Knoxville to Islip typically range from $366 to $456. The lowest price found in the past 5 days was $380, on Southwest.

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

Southwest ($380) 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 $411. 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 3h over the past 3 months.

$329 CHEAP FLIGHTS from Knoxville to Islip (TYS - ISP)

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Cheapest round-trip

$380

Typical prices: $366-$456

Southwest

Mon 12/10Sat 12/15

TYS - ISP • 1 stop

Cheapest one-way

$329

Typical prices: $184-$288

Southwest

Wed 11/28

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

Thu, Dec 10 - Tue, Dec 15

7:55 am - 4:15 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

8h 20m1 stop Baltimore/Washington

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$380Southwest

Thu, Dec 10 - Tue, Dec 15

7:55 am - 4:15 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

8h 20m1 stop Baltimore/Washington

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

10h 35m2 stops Baltimore/Washington Orlando

$386Southwest

Fri, Dec 11 - Mon, Dec 14

12:50 pm - 11:35 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

10h 45m2 stops Orlando Baltimore/Washington

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$410Southwest

Fri, Dec 11 - Mon, Dec 14

8:10 am - 5:05 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

8h 55m1 stop Baltimore/Washington

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$410Southwest

Thu, Dec 10 - Tue, Dec 15

7:05 am - 3:30 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

8h 25m2 stops Nashville Intl Orlando

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

10h 35m2 stops Baltimore/Washington Orlando

$415Southwest

Tue, Dec 29 - Tue, Jan 5

7:15 pm - 8:45 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

13h 30m2 stops Nashville Intl Orlando

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$429Southwest

Tue, Dec 29 - Tue, Jan 5

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

8h 20m1 stop Baltimore/Washington

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$452Southwest

Tue, Dec 29 - Tue, Jan 5

7:15 pm - 8:45 amTYS Knoxville McGhee Tyson-ISP Islip Long Island

13h 30m2 stops Nashville Intl Orlando

4:05 pm - 8:50 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

4h 45m1 stop Baltimore/Washington

$460Southwest

Mon, Nov 30 - Mon, Dec 7

6:46 pm - 6:09 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

23h 23m1 stop Sarasota Bradenton Intl

3:02 pm - 1:07 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

22h 05m2 stops Raleigh-Durham Fort Lauderdale

$492Multiple Airlines

Sun, Nov 15 - Thu, Nov 19

3:09 pm - 2:22 pmTYS Knoxville McGhee Tyson-ISP Islip Long Island

23h 13m2 stops Sarasota Bradenton Intl Raleigh-Durham

6:49 pm - 3:51 pmISP Islip Long Island-TYS Knoxville McGhee Tyson

21h 02m1 stop Sarasota Bradenton Intl

$600Multiple 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 with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Knoxville to Islip? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Islip departing in december.

Find deals

Low season	January
High season	July
Cheapest flight	$329

Beat the crowds with an average 90% drop in travelers.

The most popular month to fly with an average 65% increase in travelers.

One-way 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.

What cabin classes can I book on flights from Knoxville to Islip?
Only Economy Class is available on flights from Knoxville to Islip.
How long is a flight from Knoxville to Islip?
A nonstop flight from Knoxville to Islip takes 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.
How much should I expect to pay for a Knoxville to Islip flight?
Round-trip flights from Knoxville to Islip range from $366 to $456, with an average of $406 over the past 12 months. Anything below $366 counts as a good deal.
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 $380 to $930. That means the highest observed fare was about 2x 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 higher than usual. Average one-way flight prices are about $559, which is 116% above 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 averaging $105 for economy cars. Top options include:

• Budget
• Enterprise Rent-A-Car
• Avis
• National
• Empire Rent A Car
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).
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.
Can I save money by using flexible dates for flights from Knoxville to Islip?
Yes. Flexible dates can save you up to 26% on flights from Knoxville to Islip. Saturday is the cheapest departure day at $349 round-trip on average, while Tuesday is the most expensive at $466, a difference of $117.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

If your dates are flexible, aim for a Saturday departure and avoid flying on Tuesday. On this route, Saturday flights average $349, about $117 less than Tuesday fares (25% 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

$329 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?

Which airline is the cheapest 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