$131 Find Cheap Flights from Islip to Colorado - 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 from Islip to Colorado departing on 8/20. 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 Islip to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$250
Colorado Springs
Colorado Springs2 stops$546
Denver
Denver1 stop$250
Colorado Springs
Colorado Springs2 stops$546

Book Cheap Islip to Colorado Plane Tickets

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

Mon, Aug 31 - Thu, Sep 3
Frontier Logo
7:09 pm - 8:07 am
ISP
-
DEN
14h 58m
1 stop
Frontier Logo
6:00 am - 6:14 pm
DEN
-
ISP
10h 14m
1 stop
$250Frontier
Thu, Sep 3 - Wed, Sep 9
Frontier Logo
7:09 pm - 7:33 am
ISP
-
DEN
14h 24m
1 stop
Frontier Logo
6:40 am - 4:58 pm
DEN
-
ISP
8h 18m
1 stop
$250Frontier
Thu, Sep 3 - Wed, Sep 9
Frontier Logo
7:09 pm - 7:33 am
ISP
-
DEN
14h 24m
1 stop
Frontier Logo
6:40 am - 4:58 pm
DEN
-
ISP
8h 18m
1 stop
$250Frontier
Thu, Aug 20 - Tue, Aug 25
Frontier Logo
7:09 pm - 7:33 am
ISP
-
DEN
14h 24m
1 stop
Frontier Logo
11:59 pm - 9:53 am
DEN
-
ISP
7h 54m
1 stop
$250Frontier
Mon, Aug 24 - Mon, Aug 31
Frontier Logo
7:46 pm - 11:07 pm
ISP
-
DEN
29h 21m
1 stop
Frontier Logo
6:00 am - 7:01 pm
DEN
-
ISP
11h 01m
1 stop
$250Frontier
Sat, Oct 10 - Tue, Oct 13
Frontier Logo
8:55 pm - 7:32 am
ISP
-
DEN
12h 37m
1 stop
Frontier Logo
11:59 pm - 3:03 pm
DEN
-
ISP
13h 04m
1 stop
$250Frontier
Wed, Aug 26 - Mon, Aug 31
Frontier Logo
10:57 am - 11:00 pm
ISP
-
DEN
14h 03m
1 stop
Frontier Logo
6:00 am - 7:01 pm
DEN
-
ISP
11h 01m
1 stop
$250Frontier
Thu, Sep 10 - Mon, Sep 14
Southwest Logo
6:45 am - 2:35 pm
ISP
-
DEN
9h 50m
1 stop
Southwest Logo
5:15 am - 12:35 pm
DEN
-
ISP
5h 20m
1 stop
$369Southwest
Tue, Sep 22 - Tue, Sep 29
Southwest Logo
12:55 pm - 7:45 pm
ISP
-
DEN
8h 50m
2 stops
Southwest Logo
6:00 am - 5:00 pm
DEN
-
ISP
9h 00m
2 stops
$379Southwest
Thu, Aug 20 - Tue, Aug 25
Southwest Logo
6:10 am - 10:05 am
ISP
-
DEN
5h 55m
1 stop
Southwest Logo
9:35 am - 9:05 pm
DEN
-
ISP
9h 30m
2 stops
$385Southwest
Booking Insights

KAYAK's insights & trends for Islip to Colorado flights

Get data-powered insights and trends into flights from Islip to Colorado to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Islip, New York to Colorado?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip, New York to Colorado departing in September.

Flight prices are below average for this route right now.

Flights to Colorado from Islip, New York usually cost between $472 and $644 in September.
The lowest price found in the past 5 days was $250 on Frontier (Sep 3-Sep 9).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Islip to Colorado is January, when tickets cost $0 (return) on average. On the other hand, the most expensive months are April and December, when the average cost of round-trip tickets is $942 and $653 respectively.

Find deals

Good to know

Low season

September

Cheapest flight

$131
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Islip to Denver

FAQs - booking Colorado flights

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

    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 Islip to Colorado.

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

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

    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 from Islip to Colorado with an airline and back with another airline.

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

    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 from Islip to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Islip to Colorado

Information on your arrival and departure airports

Islip (ISP)