Cheap flights from Atlanta to Islip

One-way fares from $149 · ATL → ISP · prices found by travellers in the last 48 hours

Compare all dates Islip → Atlanta
Cheapest fare
$149

Frontier Airlines · Sat, Nov 21

Cheapest month
November

from $149

Direct flights
Not recently

Usually 1+ stop

Quickest trip
4h 16m

1,270 km

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Cheapest month to fly from Atlanta to Islip

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

  1. November 2026 Cheapest $149

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

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Getting around

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About flights from Atlanta to Islip

Atlanta (ATL) and Islip (ISP) are about 1,270 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 4h 16m. Over the next few months, one-way fares start from $149, 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 Atlanta to Islip?

The cheapest one-way fare we've seen recently is $149 with Frontier Airlines, departing Saturday, November 21, 2026.

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

November 2026 currently has the lowest fares, from $149 one way.

Are there direct flights from Atlanta to Islip?

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

How long is the flight from Atlanta to Islip?

The quickest journey we've seen takes about 4h 16m. Atlanta and Islip are around 1,270 km apart.

Which airlines fly from Atlanta to Islip?

Recent fares on this route were with Frontier Airlines.

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