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Cheap flights from Denver to New York from $81

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to New York departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Denver to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:59 pm - 7:39 pm
DEN
-
ISP
17h 40m1 stop
Frontier Logo
12:01 pm - 10:59 pm
ISP
-
DEN
12h 58m1 stop
$167Frontier
Sun, Jan 4 - Sat, Feb 28
Frontier Logo
6:32 pm - 6:48 pm
DEN
-
ISP
22h 16m1 stop
Frontier Logo
7:43 pm - 5:36 pm
ISP
-
DEN
23h 53m1 stop
$183Frontier
Wed, Jan 21 - Mon, Jan 26
Frontier Logo
11:59 pm - 7:39 pm
DEN
-
ISP
17h 40m1 stop
Frontier Logo
7:56 pm - 10:59 pm
ISP
-
DEN
29h 03m1 stop
$184Frontier
Sun, Jan 4 - Sat, Jan 10
Frontier Logo
11:59 pm - 1:13 pm
DEN
-
ISP
11h 14m1 stop
Frontier Logo
3:34 pm - 10:59 pm
ISP
-
DEN
9h 25m1 stop
$186Frontier
Tue, Feb 24 - Thu, Feb 26
Frontier Logo
4:15 pm - 7:50 pm
DEN
-
ISP
25h 35m1 stop
Frontier Logo
8:45 pm - 6:59 pm
ISP
-
DEN
24h 14m1 stop
$202Frontier
Thu, Jan 15 - Mon, Jan 19
Frontier Logo
8:55 am - 7:38 am
DEN
-
ISP
20h 43m1 stop
Frontier Logo
2:17 pm - 2:06 pm
ISP
-
DEN
25h 49m1 stop
$204Frontier
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
4:15 pm - 7:50 pm
DEN
-
ISP
25h 35m1 stop
Frontier Logo
1:42 pm - 12:59 am
ISP
-
DEN
13h 17m1 stop
$218Frontier
Thu, Jan 15 - Sun, Jan 18
Multiple Airlines Logo
1:21 pm - 11:10 am
DEN
-
ISP
19h 49m1 stop
Multiple Airlines Logo
2:31 pm - 9:49 pm
ISP
-
DEN
9h 18m1 stop
$225Multiple Airlines
Fri, Feb 6 - Mon, Feb 9
Multiple Airlines Logo
6:30 am - 8:47 pm
DEN
-
ISP
12h 17m2 stops
Multiple Airlines Logo
2:31 pm - 9:49 pm
ISP
-
DEN
9h 18m1 stop
$232Multiple Airlines
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
11:59 pm - 11:25 am
DEN
-
ISP
9h 26m1 stop
Frontier Logo
8:24 pm - 5:33 pm
ISP
-
DEN
23h 09m1 stop
$234Frontier
Wed, Dec 31 - Mon, Jan 5

Frontier flights from Denver to Islip, New York

Our best Frontier deals on Denver to Islip, New York flight tickets
Frontier
Jan 4
DEN11:59 pmDenver Intl
17h 40m
1 stop
ISP7:39 pmIslip Long Island
Feb 28
ISP12:01 pmIslip Long Island
12h 58m
1 stop
DEN10:59 pmDenver Intl
$167
Find similar
Frontier
Jan 21
DEN6:32 pmDenver Intl
22h 16m
1 stop
ISP6:48 pmIslip Long Island
Jan 26
ISP7:43 pmIslip Long Island
23h 53m
1 stop
DEN5:36 pmDenver Intl
$183
Find similar
Frontier
Jan 4
DEN11:59 pmDenver Intl
17h 40m
1 stop
ISP7:39 pmIslip Long Island
Jan 10
ISP7:56 pmIslip Long Island
29h 03m
1 stop
DEN10:59 pmDenver Intl
$184
Find similar

Southwest flights from Denver to Islip, New York

Our best Southwest deals on Denver to Islip, New York flight tickets
Southwest
Jan 21
DEN6:20 amDenver Intl
7h 55m
1 stop
ISP4:15 pmIslip Long Island
Feb 4
ISP9:15 amIslip Long Island
10h 25m
1 stop
DEN5:40 pmDenver Intl
$380
Find similar
Southwest
Jan 21
DEN11:00 amDenver Intl
8h 55m
2 stops
ISP9:55 pmIslip Long Island
Feb 4
ISP3:45 pmIslip Long Island
8h 55m
2 stops
DEN10:40 pmDenver Intl
$417
Find similar
Southwest
Feb 6
DEN10:30 amDenver Intl
9h 50m
2 stops
ISP10:20 pmIslip Long Island
Feb 9
ISP5:55 amIslip Long Island
9h 00m
2 stops
DEN12:55 pmDenver Intl
$430
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Islip, New York that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 21, 2025.
Use the filters below to find and compare flights from Denver to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 1/4

11:59 pm-7:39 pm

1 stop17h 40m

Islip Long Island

Sat 2/28

12:01 pm-10:59 pm

1 stop12h 58m

$167

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 1/21

6:32 pm-6:48 pm

1 stop22h 16m

Islip Long Island

Mon 1/26

7:43 pm-5:36 pm

1 stop23h 53m

$183

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 1/4

11:59 pm-7:39 pm

1 stop17h 40m

Islip Long Island

Sat 1/10

7:56 pm-10:59 pm

1 stop29h 03m

$184

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 2/24

11:59 pm-1:13 pm

1 stop11h 14m

Islip Long Island

Thu 2/26

3:34 pm-10:59 pm

1 stop9h 25m

$186

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 1/15

4:15 pm-7:50 pm

1 stop25h 35m

Islip Long Island

Mon 1/19

8:45 pm-6:59 pm

1 stop24h 14m

$202

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 2/19

8:55 am-7:38 am

1 stop20h 43m

Islip Long Island

Mon 2/23

2:17 pm-2:06 pm

1 stop25h 49m

$204

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 1/15

4:15 pm-7:50 pm

1 stop25h 35m

Islip Long Island

Sun 1/18

1:42 pm-12:59 am

1 stop13h 17m

$218

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 2/6

1:21 pm-11:10 am

1 stop19h 49m

Islip Long Island

Mon 2/9

2:31 pm-9:49 pm

1 stop9h 18m

$225

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 2/6

6:30 am-8:47 pm

2 stops12h 17m

Islip Long Island

Mon 2/9

2:31 pm-9:49 pm

1 stop9h 18m

$232

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 12/31

11:59 pm-11:25 am

1 stop9h 26m

Islip Long Island

Mon 1/5

8:24 pm-5:33 pm

1 stop23h 09m

$234

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New York from

How to get the cheapest flight ticket from Denver to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Denver to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $286. The most expensive day to fly to Islip, New York is Wednesday, with ticket prices averaging around $426.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Denver in the evening is the least expensive time of day to depart. momondo users have found prices as low as $266 when looking at flights departing in the evening. Flights to Islip, New York are more costly in the morning, with an average ticket price of $363. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Denver to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Islip, New York (DEN to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Islip, New York

Fastest flight time

7h 40m

Direct flights

None
The fastest flight from Denver to Islip, New York takes 7h 40m
There are no direct flights from Denver to Islip, New York. There are no popular flight routes from Denver to Islip, New York.
Search flight deals

  • How far is Denver Intl to Islip Long Island by plane?

    A flight from Denver Intl to Islip Long Island will travel around 1667.0 mi. In terms of flight time, this usually takes a little over 7h 40m.

  • When did momondo last update prices for flights from Denver Intl Airport to Islip Long Island Airport?

    Prices for flights from Denver Intl Airport to Islip Long Island Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to Islip Long Island Airport?

  • How old do you have to be to fly from Denver Intl Airport to Islip Long Island Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Islip Long Island Airport.

  • What documentation or ID do you need to fly to Islip Long Island Airport?

    The required travel and health documents for your Islip Long Island Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Islip Long Island Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Denver to Islip, New York?

Best airlines flying from Denver to Islip, New York

Compare and see reviews for airlines that fly from Denver to Islip, New York with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $357Free CancellationRating
8.0
4,254 reviews
Search Southwest flights

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Montauk
Riverhead
Sag Harbor
Southampton
Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Islip?

Finding the right flight to Islip from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Islip quick and easy, saving you time and money.

Can I find flights from Denver to Islip with flexible booking policies on momondo?

All flight searches from Denver to Islip on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Denver to Islip?

Once all potential Denver to Islip flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Denver to Islip right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Denver to Islip flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Islip, New York trip

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