Southwest® flights from Montrose, CO to Long Island/Islip MacArthur from $419

Promo Code

Low fares from Montrose, CO to Long Island/Islip MacArthur

$

Montrose, CO (MTJ)to

Long Island/Islip MacArthur (ISP)
Depart: 05/20/2026

One-way

Choice

From
$419
Seen: 20 hrs ago

Montrose, CO (MTJ)to

Long Island/Islip MacArthur (ISP)
Depart: 05/20/2026

One-way

Choice Preferred

From
$499
Seen: 20 hrs ago

Montrose, CO (MTJ)to

Long Island/Islip MacArthur (ISP)
Depart: 05/20/2026

One-way

Choice Extra

From
$559
Seen: 20 hrs ago

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Mar 2026
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May 2026
From$419*
Seen: 20 hrs ago
One Way/Basic
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    • *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.

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