ISP

$121 Find Cheap Flights from Colorado 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 8/6. 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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Flight Deals

Cheap Flights from Colorado to Islip

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Colorado 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 Colorado to Islip

Thu, Aug 13 - Mon, Aug 17
Frontier Logo
6:00 am - 9:53 am
DEN
-
ISP
25h 53m
1 stop
Frontier Logo
7:46 pm - 11:07 pm
ISP
-
DEN
29h 21m
1 stop
$242Frontier
Tue, Sep 1 - Mon, Sep 7
Frontier Logo
11:59 pm - 9:53 am
DEN
-
ISP
7h 54m
1 stop
Frontier Logo
7:09 pm - 8:07 am
ISP
-
DEN
14h 58m
1 stop
$273Frontier
Tue, Oct 13 - Thu, Oct 15
Frontier Logo
6:00 am - 3:03 pm
DEN
-
ISP
7h 03m
1 stop
Frontier Logo
4:13 pm - 11:04 pm
ISP
-
DEN
8h 51m
1 stop
$275Frontier
Sat, Oct 3 - Tue, Oct 6
Frontier Logo
11:59 pm - 9:33 am
DEN
-
ISP
7h 34m
1 stop
Frontier Logo
4:13 pm - 11:04 pm
ISP
-
DEN
8h 51m
1 stop
$282Frontier
Sat, Aug 1 - Sat, Aug 8
Frontier Logo
6:00 am - 7:01 pm
DEN
-
ISP
11h 01m
1 stop
Frontier Logo
7:46 pm - 10:29 pm
ISP
-
DEN
28h 43m
1 stop
$295Frontier
Fri, Aug 21 - Sun, Aug 23
Frontier Logo
11:59 pm - 6:14 pm
DEN
-
ISP
16h 15m
1 stop
Frontier Logo
7:46 pm - 11:07 pm
ISP
-
DEN
29h 21m
1 stop
$308Frontier
Tue, Sep 8 - Sun, Sep 13
Multiple Airlines Logo
1:38 pm - 11:20 am
DEN
-
ISP
19h 42m
1 stop
Multiple Airlines Logo
4:13 pm - 10:33 pm
ISP
-
DEN
32h 20m
2 stops
$359Multiple Airlines
Fri, Aug 14 - Fri, Aug 21
Southwest Logo
11:20 am - 10:05 pm
COS
-
ISP
8h 45m
2 stops
Southwest Logo
12:35 pm - 7:55 pm
ISP
-
COS
9h 20m
2 stops
$513Southwest
Sat, Aug 22 - Sun, Aug 23
Southwest Logo
8:55 am - 8:45 pm
COS
-
ISP
9h 50m
2 stops
Southwest Logo
6:20 am - 4:00 pm
ISP
-
COS
11h 40m
2 stops
$577Southwest
Sun, Oct 4 - Sun, Oct 18
Southwest Logo
5:00 pm - 10:20 am
COS
-
ISP
15h 20m
2 stops
Southwest Logo
5:40 am - 2:10 pm
ISP
-
COS
10h 30m
2 stops
$589Southwest
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Good to know

Low season

February

Cheapest flight

$121
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Denver to Islip

FAQs for booking flights from Colorado to Islip

  • How does KAYAK find such low prices on flights from Colorado 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 Colorado to Islip.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Colorado 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 Colorado 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 Colorado with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado 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 Colorado 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)