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Cheap flights from Denver to New York from $80

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 5/18. 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

Find the cheapest flights from Denver to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
11:56 pm - 10:05 am
DEN
-
ISP
8h 09m
1 stop
Frontier Logo
11:00 am - 11:11 pm
ISP
-
DEN
14h 11m
1 stop
$180Frontier
Tue, May 12 - Fri, May 15
Frontier Logo
11:56 pm - 10:05 am
DEN
-
ISP
8h 09m
1 stop
Frontier Logo
11:00 am - 11:11 pm
ISP
-
DEN
14h 11m
1 stop
$205Frontier
Tue, May 12 - Sat, May 16
Frontier Logo
7:15 am - 5:58 pm
DEN
-
ISP
8h 43m
1 stop
Frontier Logo
11:00 am - 11:11 pm
ISP
-
DEN
14h 11m
1 stop
$230Frontier
Fri, May 29 - Sat, May 30
Frontier Logo
9:15 am - 10:27 am
DEN
-
ISP
23h 12m
1 stop
Frontier Logo
11:12 am - 8:24 am
ISP
-
DEN
23h 12m
1 stop
$231Frontier
Wed, May 13 - Sun, May 17
Frontier Logo
6:00 am - 7:05 pm
DEN
-
ISP
11h 05m
1 stop
Frontier Logo
10:48 am - 11:04 pm
ISP
-
DEN
14h 16m
1 stop
$244Frontier
Sat, Jun 13 - Wed, Jun 17
Frontier Logo
11:49 pm - 10:03 am
DEN
-
ISP
8h 14m
1 stop
Frontier Logo
10:48 am - 11:04 pm
ISP
-
DEN
14h 16m
1 stop
$250Frontier
Tue, Jun 9 - Mon, Jun 15
Frontier Logo
6:00 am - 7:05 pm
DEN
-
ISP
11h 05m
1 stop
Frontier Logo
10:48 am - 11:04 pm
ISP
-
DEN
14h 16m
1 stop
$264Frontier
Sat, Jun 13 - Wed, Jun 17
Frontier Logo
11:56 pm - 10:05 am
DEN
-
ISP
8h 09m
1 stop
Frontier Logo
11:00 am - 11:11 pm
ISP
-
DEN
14h 11m
1 stop
$270Frontier
Tue, May 26 - Fri, May 29
Multiple Airlines Logo
6:03 am - 4:47 pm
DEN
-
ISP
8h 44m
1 stop
Multiple Airlines Logo
5:27 pm - 2:32 pm
ISP
-
DEN
23h 05m
1 stop
$271Multiple Airlines
Tue, May 26 - Tue, Jun 2
Frontier Logo
11:59 pm - 7:05 pm
DEN
-
ISP
17h 06m
1 stop
Frontier Logo
10:48 am - 8:20 am
ISP
-
DEN
23h 32m
1 stop
$290Frontier
Thu, Jun 18 - Mon, Jun 22

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Frontier flights from Denver to Islip, New York

Our best Frontier deals on Denver to Islip, New York flight tickets
Frontier
May 12
DEN11:56 pmDenver Intl
8h 09m
1 stop
ISP10:05 amIslip Long Island
May 16
ISP11:00 amIslip Long Island
14h 11m
1 stop
DEN11:11 pmDenver Intl
$205
Frontier
May 29
DEN7:15 amDenver Intl
8h 43m
1 stop
ISP5:58 pmIslip Long Island
May 30
ISP11:00 amIslip Long Island
14h 11m
1 stop
DEN11:11 pmDenver Intl
$230
Frontier
May 13
DEN9:15 amDenver Intl
23h 12m
1 stop
ISP10:27 amIslip Long Island
May 17
ISP11:12 amIslip Long Island
23h 12m
1 stop
DEN8:24 amDenver Intl
$231

Southwest flights from Denver to Islip, New York

Our best Southwest deals on Denver to Islip, New York flight tickets
Southwest
Aug 4
DEN11:05 amDenver Intl
8h 00m
2 stops
ISP9:05 pmIslip Long Island
Aug 11
ISP10:55 amIslip Long Island
7h 15m
1 stop
DEN4:10 pmDenver Intl
$430
Southwest
May 26
DEN7:50 amDenver Intl
8h 40m
2 stops
ISP6:30 pmIslip Long Island
Jun 2
ISP12:30 pmIslip Long Island
8h 45m
2 stops
DEN7:15 pmDenver Intl
$435
Southwest
Jul 21
DEN5:00 amDenver Intl
6h 45m
1 stop
ISP1:45 pmIslip Long Island
Aug 2
ISP6:00 amIslip Long Island
10h 00m
2 stops
DEN2:00 pmDenver Intl
$472

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 April 30, 2026.
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

Cheapest round-trip
Quickest round-trip

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 5/12

11:56 pm-10:05 am

1 stop8h 09m

Islip Long Island

Fri 5/15

11:00 am-11:11 pm

1 stop14h 11m

$180

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 5/12

11:56 pm-10:05 am

1 stop8h 09m

Islip Long Island

Sat 5/16

11:00 am-11:11 pm

1 stop14h 11m

$205

DenverIslip

DEN - ISP

DENISP

Denver Intl

Fri 5/29

7:15 am-5:58 pm

1 stop8h 43m

Islip Long Island

Sat 5/30

11:00 am-11:11 pm

1 stop14h 11m

$230

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 5/13

9:15 am-10:27 am

1 stop23h 12m

Islip Long Island

Sun 5/17

11:12 am-8:24 am

1 stop23h 12m

$231

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 6/13

6:00 am-7:05 pm

1 stop11h 05m

Islip Long Island

Wed 6/17

10:48 am-11:04 pm

1 stop14h 16m

$244

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 6/9

11:49 pm-10:03 am

1 stop8h 14m

Islip Long Island

Mon 6/15

10:48 am-11:04 pm

1 stop14h 16m

$250

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 6/13

6:00 am-7:05 pm

1 stop11h 05m

Islip Long Island

Wed 6/17

10:48 am-11:04 pm

1 stop14h 16m

$264

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 5/26

11:56 pm-10:05 am

1 stop8h 09m

Islip Long Island

Fri 5/29

11:00 am-11:11 pm

1 stop14h 11m

$270

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 5/26

6:03 am-4:47 pm

1 stop8h 44m

Islip Long Island

Tue 6/2

5:27 pm-2:32 pm

1 stop23h 05m

$271

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 6/18

11:59 pm-7:05 pm

1 stop17h 06m

Islip Long Island

Mon 6/22

10:48 am-8:20 am

1 stop23h 32m

$290

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 airline that flies from Denver Intl to Islip Long Island?

Frontier is the most popular carrier operating from Denver Intl to Islip Long Island

What airlines fly to Islip, New York?

United Airlines, Delta and Frontier are the top three most popular airlines that fly to Islip, New York from Denver according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 6 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

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

8h 09m

Direct flights

None
The fastest flight from Denver to Islip, New York takes 8h 09m
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

Frequently asked questions about flying from Denver to Islip, New York

  • 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 8h 09m.

  • 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
4,314 reviews
Search Southwest flights

  • Southwest Flights From Denver to Islip, New York

    Southwest flies from Denver to Islip, New York around 3 times per week, with 4,314 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Denver to Islip, New York in the last 72 hours was $375 (round-trip), much lower than the average airfare cost of $482 for Southwest flights on this route.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
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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.

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