$140 Cheap Frontier Airlines flights from Chicago to Islip (ORD to ISP)

Find The Best Day To Fly from Chicago to Islip

Amazing Frontier Airlines ORD to ISP Flight Deals

The cheapest flights to MacArthur found within the past 7 days were $293 round trip and $140 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Oct 17 - Sat, Oct 24
ORD
Chicago
ISP
Islip
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 17 from Chicago to Islip, returning Sat, Oct 24, priced at $293 found 1 day ago
Fri, Oct 16 - Sat, Oct 24
ORD
Chicago
ISP
Islip
$313 Roundtrip, found 3 days ago
$313
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Oct 16 from Chicago to Islip, returning Sat, Oct 24, priced at $313 found 3 days ago
Sat, Oct 17 - Sun, Oct 18
ORD
Chicago
ISP
Islip
$331 Roundtrip, found 1 day ago
$331
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 17 from Chicago to Islip, returning Sun, Oct 18, priced at $331 found 1 day ago
Fri, Nov 13 - Sat, Nov 21
ORD
Chicago
ISP
Islip
$353 Roundtrip, found 1 day ago
$353
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Nov 13 from Chicago to Islip, returning Sat, Nov 21, priced at $353 found 1 day ago
Thu, Oct 8 - Mon, Oct 12
ORD
Chicago
ISP
Islip
$373 Roundtrip, found 3 days ago
$373
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Oct 8 from Chicago to Islip, returning Mon, Oct 12, priced at $373 found 3 days ago
Fri, Nov 13 - Sat, Nov 21
ORD
Chicago
ISP
Islip
$377 Roundtrip, found 1 day ago
$377
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Nov 13 from Chicago to Islip, returning Sat, Nov 21, priced at $377 found 1 day ago

ISP From ORD Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
The William Hotel Midtown, New York

The William Hotel Midtown, New York

3.5 out of 5
Save 100% on your flight
Price was $2,019, price is now $1,195 per person
$1,195
per person
Dec 19 - Dec 24
found 1 day ago
Roundtrip flight included
Chicago (CHI) to New York (JFK)
Hotel St. James

Hotel St. James

3 out of 5
Price was $2,491, price is now $1,347 per person
$1,347
per person
Oct 28 - Nov 3
found 1 day ago
Roundtrip flight included
Chicago (CHI) to New York (JFK)
NobleDEN Hotel

NobleDEN Hotel

4 out of 5
Save 100% on your flight
Price was $2,645, price is now $1,529 per person
$1,529
per person
Nov 7 - Nov 14
found 1 day ago
Roundtrip flight included
Chicago (ORD) to New York (JFK)
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Frequently asked questions

Can I catch a flight from O'Hare Airport to MacArthur Airport (ISP) right now?
Make sure you check out our Covid-19 Travel Advisor to learn if there are any current travel advice reports and quarantine requirements in effect in MacArthur Airport when flying in from O'Hare Airport.
What terminal is Frontier Airlines at ORD?
The information printed on tickets can differ from airline to airline. If you're traveling from ORD to ISP with Frontier Airlines and you can't locate your terminal details, contact the airline.
Are there Frontier Airlines non-stop flights from ORD to ISP?
There are no direct flights with Frontier Airlines from O'Hare Intl. Airport (ORD) to MacArthur Airport. You will have at least one stopover, so use the time to stretch out your legs before catching your next flight.
How long is a Frontier Airlines flight from ORD to ISP?
Watch a few TV episodes, listen to a podcast or just recline your seat and relax. Whatever you're into, find a way to pass the 5 hours and 44 minutes that it takes to journey from ORD to ISP with Frontier Airlines.
How many direct and indirect flights does Frontier Airlines fly from ORD to ISP?
Around 7 Frontier Airlines flights link ORD and ISP each week.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to ISP, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Travelers ❤️ these 🏨 after their flight to Islip

Clarion Hotel & Conference Center Ronkonkoma MacArthur Airport

Clarion Hotel & Conference Center Ronkonkoma MacArthur Airport

3 out of 5
3845 Veterans Memorial Hwy Ronkonkoma NY
This hotel doesn't skimp on freebies - guests receive free WiFi and free self parking. Traveling on business? Take advantage of the business center, express ...
Clarion Hotel & Conference Center Ronkonkoma MacArthur Airport
La Quinta Inn & Suites by Wyndham Islip - MacArthur Airport

La Quinta Inn & Suites by Wyndham Islip - MacArthur Airport

3 out of 5
10 Aero Rd Bohemia NY
This hotel doesn't skimp on freebies - guests receive free buffet breakfast, free self parking, and a free airport shuttle. Traveling on business? Take advantage ...
6.8/10 (1,691 reviews)
"The breakfast could be better. The laundry for guests is expensive. Parking was great! Staff were great!"

Reviewed on Sep 26, 2026

La Quinta Inn & Suites by Wyndham Islip - MacArthur Airport
Courtyard by Marriott Long Island MacArthur Airport

Courtyard by Marriott Long Island MacArthur Airport

3 out of 5
5000 Express Dr S Ronkonkoma NY
This smoke-free hotel features 2 indoor pools, a 24-hour gym, and a restaurant. Traveling on business? Take advantage of the 24-hour business center and free ...
8.4/10 Very Good! (1,008 reviews)
"Just so so."

Reviewed on Sep 25, 2026

Courtyard by Marriott Long Island MacArthur Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

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*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.