Southwest® flights from Knoxville to Long Island/Islip MacArthur from $140

Promo Code

Low fares from Knoxville to Long Island/Islip MacArthur

$

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 04/01/2026

One-way

Basic

From
$140

Low fares from Knoxville to Long Island/Islip MacArthur

$

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 04/01/2026

One-way

Basic

From
$140
Seen: 22 hrs ago

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 04/02/2026

One-way

Basic

From
$155
Seen: 20 hrs ago

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 05/10/2026

One-way

Basic

From
$169
Seen: 16 hrs ago

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 04/01/2026

One-way

Choice

From
$175
Seen: 22 hrs ago

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 04/02/2026

One-way

Choice

From
$190
Seen: 20 hrs ago

Knoxville (TYS)to

Long Island/Islip MacArthur (ISP)
Depart: 05/10/2026

One-way

Choice

From
$204
Seen: 16 hrs ago

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Explore flights from Knoxville to Long Island/Islip MacArthur

*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

Flight Details

Departing from:
Mc Ghee Tyson Airport
Arriving at:
Long Island MacArthur Airport
Distance:
684 miles

Route Information

41† Weekly flights

† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

Questions we hear the most

There are 41 weekly flights from Knoxville to Long Island/Islip MacArthur on Southwest Airlines.
To find the lowest fares by day and time to fly Knoxville to Long Island/Islip MacArthur with Southwest, check out our Low Fare Calendar.
You can rent a car at Long Island MacArthur Airport book yours with your flight.
Yes! Flights from Knoxville to Long Island/Islip MacArthur—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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