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Islip

Find cheap Frontier flights to Islip

CMH — ISP
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Frontier flight deals to Islip

Cheapest Frontier flights from USA to Islip
Explore the most affordable Frontier flight options available from USA to Islip. Find the lowest fares with prices last updated on July 27, 2026.

This Super.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:10 am
MCO
-
ISP
Nonstop2h 43m
Frontier
Sat 8/297:09 pm
ISP
-
MCO
Nonstop2h 53m
Frontier
Deal found 7/24$181
This Cheapflightsfares deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:10 am
MCO
-
ISP
Nonstop2h 43m
Frontier
Mon 8/317:09 pm
ISP
-
MCO
Nonstop2h 53m
Frontier
Deal found 7/25$183
This Priceline deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:10 am
MCO
-
ISP
Nonstop2h 43m
Frontier
Mon 8/247:09 pm
ISP
-
MCO
Nonstop2h 53m
Frontier
Deal found 7/25$188

Flights to Islip with Frontier at a glance

Find detailed information about Frontier flights from USA to Islip. Explore the options provided by Frontier to plan your journey from USA to Islip. Data last updated July 27, 2026.

Popular in

July

Cheapest in

January

Average price

$160

Round-trip from

$178

One-way from

$54

Good round-trip deal

$198 or less
Highest demand for flights to Islip with Frontier; 24% potential price increase.
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Best time to find cheap flights to Islip with Frontier; 3% potential price drop.
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Average price for flights to Islip with Frontier (round-trip).
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Frontier
  • Frontier
  • 9/3-9/6
  • Nonstop
  • 5h 36m total
  • USA to Islip
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Frontier
  • Frontier
  • 9/25
  • Nonstop
  • 2h 45m total
  • USA to Islip
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Price to beat on a round-trip flight from the United States to Islip with Frontier.
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Cheapflights Insights

Find cheap Frontier flights to Islip

How long is the flight to Islip with Frontier?

On average, Frontier flights from the United States to Islip take 2 hours 23 minutes. Flights to Islip from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Frontier weekly flight availability to Islip

The most flights to Islip operated by Frontier are scheduled on a Saturday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

When is the best time to book a flight to Islip with Frontier?

The best time to book a flight to Islip with Frontier is 50 days before departure. On average, fares are higher if you book 38 days before departure.

When is the cheapest time to fly to Islip with Frontier?

Users looking for the cheapest Frontier fares to Islip should consider flying on Wednesday at noon, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.

FAQs about flights to Islip with Frontier

  • Which airport do Frontier flights arrive at when travelling to Islip?

    Frontier flights on this route tend to land at Islip Long Island Airport.

  • Is Frontier the cheapest airline for a flight to Islip?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Islip tends to be with Avelo Airlines.

  • Are there alternative airlines other than Frontier that fly to Islip?

    Southwest, JetBlue and Breeze Airways all fly to Islip and offer an alternative to Frontier.

  • How much is a flight to Islip with Frontier?

    The average price for a return flight with Frontier is $156; with a one-way flight around $174.

See more FAQs

Reviews of Frontier

See what Cheapflights users have to say about their Frontier experience.
Frontier
5.6
Fair
2,755 reviews
Overview

Entertainment

4.3

Boarding

5.9

Crew

6.6

Comfort

5.4

Food

4.5

Popular Frontier flights

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