ISP

$109 Find Cheap Flights from Illinois to Islip - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Islip departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Illinois to Islip

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Islip

Wed, Oct 7 - Wed, Oct 14
Southwest Logo
3:20 pm - 10:35 pmSTL  Lambert-St Louis-ISP Islip Long Island
6h 15m1 stop Baltimore/Washington
Southwest Logo
4:20 pm - 10:15 pmISP  Islip Long Island-STL Lambert-St Louis
6h 55m1 stop Orlando
$214Southwest
Tue, Oct 6 - Tue, Oct 13
Southwest Logo
5:30 am - 12:10 pmSTL  Lambert-St Louis-ISP Islip Long Island
5h 40m1 stop Baltimore/Washington
Southwest Logo
9:40 am - 3:00 pmISP  Islip Long Island-STL Lambert-St Louis
6h 20m2 stops Baltimore/Washington Atlanta Hartsfield-Jackson
$219Southwest
Wed, Oct 7 - Wed, Oct 14
Southwest Logo
2:20 pm - 10:35 pmSTL  Lambert-St Louis-ISP Islip Long Island
7h 15m2 stops Atlanta Hartsfield-Jackson Baltimore/Washington
Southwest Logo
6:05 am - 11:35 amISP  Islip Long Island-STL Lambert-St Louis
6h 30m1 stop Baltimore/Washington
$219Southwest
Tue, Oct 6 - Tue, Oct 13
Southwest Logo
3:20 pm - 10:35 pmSTL  Lambert-St Louis-ISP Islip Long Island
6h 15m1 stop Baltimore/Washington
Southwest Logo
9:40 am - 7:20 pmISP  Islip Long Island-STL Lambert-St Louis
10h 40m1 stop Baltimore/Washington
$220Southwest
Tue, Oct 6 - Tue, Oct 13
Southwest Logo
2:25 pm - 10:35 pmSTL  Lambert-St Louis-ISP Islip Long Island
7h 10m2 stops Chicago Midway Baltimore/Washington
Southwest Logo
9:40 am - 3:00 pmISP  Islip Long Island-STL Lambert-St Louis
6h 20m2 stops Baltimore/Washington Atlanta Hartsfield-Jackson
$225Southwest
Wed, Oct 7 - Wed, Oct 14
Southwest Logo
2:20 pm - 10:35 pmSTL  Lambert-St Louis-ISP Islip Long Island
7h 15m2 stops Atlanta Hartsfield-Jackson Baltimore/Washington
Southwest Logo
6:05 am - 12:50 pmISP  Islip Long Island-STL Lambert-St Louis
7h 45m2 stops Baltimore/Washington Tampa
$225Southwest
Thu, Aug 27 - Wed, Sep 2
Frontier Logo
7:44 pm - 9:53 amORD  Chicago O'Hare Intl-ISP Islip Long Island
13h 09m1 stop Orlando
Frontier Logo
10:57 am - 11:08 pmISP  Islip Long Island-ORD Chicago O'Hare Intl
13h 11m1 stop Orlando
$236Frontier
Fri, Aug 28 - Mon, Aug 31
Frontier Logo
9:10 pm - 9:53 amORD  Chicago O'Hare Intl-ISP Islip Long Island
11h 43m1 stop Orlando
Frontier Logo
10:57 am - 11:08 pmISP  Islip Long Island-ORD Chicago O'Hare Intl
13h 11m1 stop Orlando
$247Frontier
Sat, Sep 5 - Sat, Sep 12
Frontier Logo
7:44 pm - 6:14 pmORD  Chicago O'Hare Intl-ISP Islip Long Island
21h 30m1 stop Orlando
Frontier Logo
5:43 pm - 10:20 amISP  Islip Long Island-ORD Chicago O'Hare Intl
17h 37m1 stop Orlando
$255Frontier
Sat, Sep 19 - Sat, Sep 26
Frontier Logo
3:50 pm - 4:58 pmORD  Chicago O'Hare Intl-ISP Islip Long Island
24h 08m1 stop Orlando
Frontier Logo
5:43 pm - 10:20 amISP  Islip Long Island-ORD Chicago O'Hare Intl
17h 37m1 stop Orlando
$256Frontier
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Good to know

Low season

February

Cheapest flight

$109
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 20% increase in price.
Flight from St. Louis to Islip

FAQs for booking flights from Illinois to Islip

  • How does KAYAK find such low prices on flights from Illinois to Islip?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Islip.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Islip?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Islip?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Islip?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Amagansett

Everything you need to know for your flight to Islip

Information on the airport you'll fly into in Islip

Islip (ISP)