Cheap flights from Baltimore to Islip

One-way fares from $237 · BWI → ISP · prices found by travellers in the last 48 hours

Compare all dates Islip → Baltimore
Cheapest fare
$237

Frontier Airlines · Tue, Nov 10

Cheapest month
November

from $237

Direct flights
Not recently

Usually 1+ stop

Quickest trip
5h 56m

340 km

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Cheapest month to fly from Baltimore to Islip

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

  1. November 2026 Cheapest $237

Cheapest dates in November 2026

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

Frontier Airlines
Depart13:56 Tue, Nov 10BWI → ISP 7h 13m · 3 stops
$237one way, per person
View deal
Frontier Airlines
Depart19:05 Wed, Nov 4BWI → ISP 5h 56m · 2 stops
$346one 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

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Things to do

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

Getting around

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About flights from Baltimore to Islip

Baltimore (BWI) and Islip (ISP) are about 340 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 56m. Over the next few months, one-way fares start from $237, 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 Baltimore to Islip?

The cheapest one-way fare we've seen recently is $237 with Frontier Airlines, departing Tuesday, November 10, 2026.

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

November 2026 currently has the lowest fares, from $237 one way.

Are there direct flights from Baltimore to Islip?

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

How long is the flight from Baltimore to Islip?

The quickest journey we've seen takes about 5h 56m. Baltimore and Islip are around 340 km apart.

Which airlines fly from Baltimore to Islip?

Recent fares on this route were with Frontier Airlines.

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