Airport route guide

Upgrade & Award Space from Islip (ISP)

Long Island MacArthur Airport (ISP) is a small station in Islip, US with nonstop service to 7 destinations, served by JetBlue Airways, Frontier Airlines, and Cape Air. Because the schedule is limited, an upgrade or award opening on a Boston flight rarely lasts. 2LNR checks every ISP nonstop for confirmed availability, so a rare opening doesn't go unnoticed.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

Explore Islip routes on the interactive map Get started free
7
Nonstop destinations
30+
Airlines in award search
Free
To get started

Confirmed upgrade & award space on every ISP route

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Pick any Islip destination below to open a calendar of departures with real availability, or watch a route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each ISP route, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch a Islip route and 2LNR notifies you when space appears.

Plan on the map

Explore every ISP nonstop on the interactive route map, with connections and route statistics.

All nonstop destinations from Islip (ISP)

7 nonstop destinations with active service from Long Island MacArthur Airport. Each route links to its confirmed upgrade and award availability.

Explore ISP routes on the interactive map →

Frequently asked questions about Islip (ISP)

How many nonstop destinations does Long Island MacArthur Airport (ISP) serve?
Long Island MacArthur Airport has active nonstop service to 7 destinations. The busiest markets from ISP are Boston, West Palm Beach, and Orlando. The full list, with live upgrade and award availability for each route, is on this page.
Which airlines fly upgrade-trackable routes from ISP?
JetBlue Airways, Frontier Airlines, and Cape Air operate the most tracked routes from Islip, in that order. 2LNR covers upgrade and award space on more than 30 airlines, so other carriers serving ISP appear on their routes as well.
How do I check upgrade or award availability from ISP?
Pick any destination on this page, such as Boston, to open a calendar of ISP departures with confirmed upgrade and award space, date by date. You can also set an alert so 2LNR notifies you when space opens on a route you care about.
Does 2LNR track flights from ISP?
Yes. Every active nonstop route from Long Island MacArthur Airport is tracked, 7 destinations in total, and what's shown is confirmed availability rather than a forecast. It's free to start.

Never miss ISP upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

Get started free