Cheap flights from Islip to Pittsburgh

One-way fares from $185 · ISP → PIT · prices found by travellers in the last 48 hours

Compare all dates Pittsburgh → Islip
Cheapest fare
$185

Frontier Airlines · Mon, Nov 23

Cheapest month
November

from $185

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 33m

580 km

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Cheapest month to fly from Islip to Pittsburgh

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $185

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart16:40 Mon, Nov 23ISP → PIT 5h 33m · 1 stop
$185one way, per person
View deal
See every date in November 2026 →

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Getting around

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About flights from Islip to Pittsburgh

Islip (ISP) and Pittsburgh (PIT) are about 580 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 5h 33m. Over the next few months, one-way fares start from $185, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Islip to Pittsburgh?

The cheapest one-way fare we've seen recently is $185 with Frontier Airlines, departing Monday, November 23, 2026.

What is the cheapest month to fly from Islip to Pittsburgh?

November 2026 currently has the lowest fares, from $185 one way.

Are there direct flights from Islip to Pittsburgh?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Islip to Pittsburgh?

The quickest journey we've seen takes about 5h 33m. Islip and Pittsburgh are around 580 km apart.

Which airlines fly from Islip to Pittsburgh?

Recent fares on this route were with Frontier Airlines.

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