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Cheap flights from Denver to New York from $85

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 10/2. 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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Cheap round-trip flights

Frontier Logo
7:01 pm - 10:55 amDEN-ISP
13h 54m1 stop
Frontier Logo
11:25 am - 10:14 amISP-DEN
24h 49m1 stop
$169Frontier
Find Deal
Fri, Sep 26 - Tue, Sep 30
Frontier Logo
11:59 pm - 9:04 amDEN-ISP
7h 05m1 stop
Frontier Logo
5:05 pm - 11:13 pmISP-DEN
8h 08m1 stop
$177Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
11:59 pm - 9:04 amDEN-ISP
7h 05m1 stop
Frontier Logo
5:05 pm - 11:13 pmISP-DEN
8h 08m1 stop
$200Frontier
Find Deal
Sat, Sep 13 - Sat, Sep 20
Frontier Logo
11:59 pm - 9:04 amDEN-ISP
7h 05m1 stop
Frontier Logo
5:05 pm - 11:13 pmISP-DEN
8h 08m1 stop
$210Frontier
Find Deal
Thu, Sep 18 - Mon, Sep 22
Frontier Logo
6:01 pm - 9:04 amDEN-ISP
37h 03m2 stops
Frontier Logo
11:25 am - 10:14 amISP-DEN
24h 49m1 stop
$213Frontier
Find Deal
Wed, Sep 24 - Tue, Sep 30
Frontier Logo
12:04 am - 10:40 amDEN-ISP
8h 36m1 stop
Frontier Logo
5:05 pm - 11:13 pmISP-DEN
8h 08m1 stop
$216Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
1:44 pm - 8:42 pmDEN-ISP
28h 58m1 stop
Frontier Logo
9:49 am - 12:51 amISP-DEN
17h 02m1 stop
$220Frontier
Find Deal
Wed, Oct 8 - Mon, Oct 13
Frontier Logo
11:59 pm - 9:04 amDEN-ISP
7h 05m1 stop
Frontier Logo
5:05 pm - 11:13 pmISP-DEN
8h 08m1 stop
$228Frontier
Find Deal
Sat, Sep 20 - Sat, Sep 27
Frontier Logo
11:59 pm - 12:16 pmDEN-ISP
10h 17m1 stop
Frontier Logo
6:05 am - 9:23 pmISP-DEN
17h 18m2 stops
$237Frontier
Find Deal
Sun, Aug 24 - Thu, Aug 28
Frontier Logo
6:01 pm - 9:04 amDEN-ISP
37h 03m2 stops
Frontier Logo
11:25 am - 9:22 pmISP-DEN
35h 57m2 stops
$238Frontier
Find Deal
Wed, Sep 24 - Tue, Sep 30

Frontier flights from Denver to Islip, New York

Our best Frontier deals on Denver to Islip, New York flight tickets
Frontier
Sep 26
DEN7:01 pmDenver Intl
13h 54m
1 stop
ISP10:55 amIslip Long Island
Sep 30
ISP11:25 amIslip Long Island
24h 49m
1 stop
DEN10:14 amDenver Intl
$169
Find similar
Frontier
Sep 25
DEN11:59 pmDenver Intl
7h 05m
1 stop
ISP9:04 amIslip Long Island
Sep 29
ISP5:05 pmIslip Long Island
8h 08m
1 stop
DEN11:13 pmDenver Intl
$177
Find similar
Frontier
Sep 13
DEN11:59 pmDenver Intl
7h 05m
1 stop
ISP9:04 amIslip Long Island
Sep 20
ISP5:05 pmIslip Long Island
8h 08m
1 stop
DEN11:13 pmDenver Intl
$200
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 August 14, 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

Fri 9/26

7:01 pm-10:55 am

1 stop13h 54m

Islip Long Island

Tue 9/30

11:25 am-10:14 am

1 stop24h 49m

$169

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 9/25

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Mon 9/29

5:05 pm-11:13 pm

1 stop8h 08m

$177

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 9/13

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Sat 9/20

5:05 pm-11:13 pm

1 stop8h 08m

$200

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 9/18

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Mon 9/22

5:05 pm-11:13 pm

1 stop8h 08m

$210

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 9/24

6:01 pm-9:04 am

2 stops37h 03m

Islip Long Island

Tue 9/30

11:25 am-10:14 am

1 stop24h 49m

$213

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 9/25

12:04 am-10:40 am

1 stop8h 36m

Islip Long Island

Mon 9/29

5:05 pm-11:13 pm

1 stop8h 08m

$216

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 10/8

1:44 pm-8:42 pm

1 stop28h 58m

Islip Long Island

Mon 10/13

9:49 am-12:51 am

1 stop17h 02m

$220

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 9/20

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Sat 9/27

5:05 pm-11:13 pm

1 stop8h 08m

$228

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 8/24

11:59 pm-12:16 pm

1 stop10h 17m

Islip Long Island

Thu 8/28

6:05 am-9:23 pm

2 stops17h 18m

$237

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 9/24

6:01 pm-9:04 am

2 stops37h 03m

Islip Long Island

Tue 9/30

11:25 am-9:22 pm

2 stops35h 57m

$238

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Best Price Found

$85

Fastest flight time

7h 05m

Direct flights

None

Airports in Islip, New York

1 airport
The best one-way flight to Islip, New York from Denver in the past 72 hours is $85. The best round-trip flight deal from Denver to Islip, New York found on momondo in the last 72 hours is $169.
The fastest flight from Denver to Islip, New York takes 7h 05m
There are no direct flights from Denver to Islip, New York. Popular non-direct route for this connection is Denver Intl Airport - Islip Long Island Airport.
There is 1 airport near Islip, New York: Islip Long Island (ISP)
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 05m.

  • 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 $375Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Traveling to a place near New York?

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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.

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