Cheap flights from Pittsburgh to Islip

One-way fares from $718 · PIT → ISP · prices found by travellers in the last 48 hours

Compare all dates Islip → Pittsburgh
Cheapest fare
$718

Frontier Airlines · Sat, Nov 14

Cheapest month
November

from $718

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 12m

580 km

Get a price alert

We'll email you when Pittsburgh → Islip drops to your price. It's free, and you can stop any time.

Today's cheapest fare is $718. We'll send one email to confirm. See our privacy policy.

Cheapest month to fly from Pittsburgh to Islip

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

  1. November 2026 Cheapest $718

Cheapest dates in November 2026

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

Frontier Airlines
Depart18:27 Sat, Nov 14PIT → ISP 5h 12m · 1 stop
$718one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Islip

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in IslipCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in IslipTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in IslipPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in IslipCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Pittsburgh to Islip

Pittsburgh (PIT) and Islip (ISP) 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 12m. Over the next few months, one-way fares start from $718, 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 Pittsburgh to Islip?

The cheapest one-way fare we've seen recently is $718 with Frontier Airlines, departing Saturday, November 14, 2026.

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

November 2026 currently has the lowest fares, from $718 one way.

Are there direct flights from Pittsburgh to Islip?

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

How long is the flight from Pittsburgh to Islip?

The quickest journey we've seen takes about 5h 12m. Pittsburgh and Islip are around 580 km apart.

Which airlines fly from Pittsburgh to Islip?

Recent fares on this route were with Frontier Airlines.

More cheap flights from Pittsburgh

Compare flights to Islip from other cities →