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Cheap flights from Islip, New York to Las Vegas 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 Islip, New York to Las Vegas departing on 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Islip, New York to Las Vegas

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:56 pm - 10:25 am
ISP
-
LAS
17h 29m1 stop
Frontier Logo
10:45 pm - 10:46 pm
LAS
-
ISP
21h 01m1 stop
$182Frontier
Sat, Jan 10 - Mon, Jan 12
Frontier Logo
11:41 am - 10:15 am
ISP
-
LAS
25h 34m1 stop
Frontier Logo
11:03 pm - 7:38 am
LAS
-
ISP
29h 35m1 stop
$183Frontier
Sat, Feb 21 - Sat, Feb 28
Frontier Logo
3:34 pm - 10:15 am
ISP
-
LAS
21h 41m1 stop
Frontier Logo
11:03 pm - 12:47 pm
LAS
-
ISP
10h 44m1 stop
$201Frontier
Mon, Mar 2 - Thu, Mar 5
Frontier Logo
8:23 pm - 10:15 am
ISP
-
LAS
16h 52m1 stop
Frontier Logo
11:03 pm - 7:38 am
LAS
-
ISP
29h 35m1 stop
$204Frontier
Sat, Feb 21 - Wed, Feb 25
Frontier Logo
2:04 pm - 9:43 am
ISP
-
LAS
22h 39m1 stop
Frontier Logo
10:45 pm - 7:08 pm
LAS
-
ISP
17h 23m1 stop
$218Frontier
Mon, Jan 5 - Fri, Jan 9
Frontier Logo
8:40 pm - 10:08 am
ISP
-
LAS
16h 28m1 stop
Frontier Logo
10:33 pm - 10:46 pm
LAS
-
ISP
21h 13m1 stop
$220Frontier
Sun, Jan 11 - Tue, Jan 13
Frontier Logo
8:33 am - 11:11 am
ISP
-
LAS
29h 38m1 stop
Frontier Logo
11:03 pm - 1:13 pm
LAS
-
ISP
11h 10m1 stop
$221Frontier
Sun, Feb 22 - Tue, Feb 24
Frontier Logo
8:40 pm - 11:44 am
ISP
-
LAS
18h 04m2 stops
Frontier Logo
10:33 pm - 10:46 pm
LAS
-
ISP
21h 13m1 stop
$224Frontier
Sun, Jan 11 - Tue, Jan 13
Frontier Logo
12:55 pm - 9:43 am
ISP
-
LAS
23h 48m1 stop
Frontier Logo
9:32 pm - 7:45 pm
LAS
-
ISP
19h 13m1 stop
$228Frontier
Tue, Jan 6 - Sat, Jan 10
Frontier Logo
3:34 pm - 10:15 am
ISP
-
LAS
21h 41m1 stop
Frontier Logo
11:03 pm - 2:39 pm
LAS
-
ISP
12h 36m1 stop
$238Frontier
Thu, Feb 26 - Sun, Mar 1

Frontier flights from Islip, New York to Las Vegas

Our best Frontier deals on Islip, New York to Las Vegas flight tickets
Frontier
Jan 10
ISP7:56 pmIslip Long Island
17h 29m
1 stop
LAS10:25 amLas Vegas Harry Reid Intl
Jan 12
LAS10:45 pmLas Vegas Harry Reid Intl
21h 01m
1 stop
ISP10:46 pmIslip Long Island
$182
Find similar
Frontier
Feb 21
ISP11:41 amIslip Long Island
25h 34m
1 stop
LAS10:15 amLas Vegas Harry Reid Intl
Feb 28
LAS11:03 pmLas Vegas Harry Reid Intl
29h 35m
1 stop
ISP7:38 amIslip Long Island
$183
Find similar
Frontier
Mar 2
ISP3:34 pmIslip Long Island
21h 41m
1 stop
LAS10:15 amLas Vegas Harry Reid Intl
Mar 5
LAS11:03 pmLas Vegas Harry Reid Intl
10h 44m
1 stop
ISP12:47 pmIslip Long Island
$201
Find similar

Breeze Airways flights from Islip, New York to Las Vegas

Our best Breeze Airways deals on Islip, New York to Las Vegas flight tickets
Breeze Airways
Feb 1
ISP7:26 pmIslip Long Island
19h 46m
1 stop
LAS12:12 pmLas Vegas Harry Reid Intl
Feb 5
LAS11:59 pmLas Vegas Harry Reid Intl
10h 32m
2 stops
ISP1:31 pmIslip Long Island
$324
Find similar
Breeze Airways
Dec 23
ISP8:22 pmIslip Long Island
18h 42m
1 stop
LAS12:04 pmLas Vegas Harry Reid Intl
Jan 1
LAS12:19 pmLas Vegas Harry Reid Intl
22h 26m
2 stops
ISP1:45 pmIslip Long Island
$619
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Las Vegas 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 18, 2025.
Use the filters below to find and compare flights from Islip, New York to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 1/10

7:56 pm-10:25 am

1 stop17h 29m

Las Vegas Harry Reid Intl

Mon 1/12

10:45 pm-10:46 pm

1 stop21h 01m

$182

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 2/21

11:41 am-10:15 am

1 stop25h 34m

Las Vegas Harry Reid Intl

Sat 2/28

11:03 pm-7:38 am

1 stop29h 35m

$183

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 3/2

3:34 pm-10:15 am

1 stop21h 41m

Las Vegas Harry Reid Intl

Thu 3/5

11:03 pm-12:47 pm

1 stop10h 44m

$201

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 2/21

8:23 pm-10:15 am

1 stop16h 52m

Las Vegas Harry Reid Intl

Wed 2/25

11:03 pm-7:38 am

1 stop29h 35m

$204

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 1/5

2:04 pm-9:43 am

1 stop22h 39m

Las Vegas Harry Reid Intl

Fri 1/9

10:45 pm-7:08 pm

1 stop17h 23m

$218

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 1/11

8:40 pm-10:08 am

1 stop16h 28m

Las Vegas Harry Reid Intl

Tue 1/13

10:33 pm-10:46 pm

1 stop21h 13m

$220

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 2/22

8:33 am-11:11 am

1 stop29h 38m

Las Vegas Harry Reid Intl

Tue 2/24

11:03 pm-1:13 pm

1 stop11h 10m

$221

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 1/11

8:40 pm-11:44 am

2 stops18h 04m

Las Vegas Harry Reid Intl

Tue 1/13

10:33 pm-10:46 pm

1 stop21h 13m

$224

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 1/6

12:55 pm-9:43 am

1 stop23h 48m

Las Vegas Harry Reid Intl

Sat 1/10

9:32 pm-7:45 pm

1 stop19h 13m

$228

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 2/26

3:34 pm-10:15 am

1 stop21h 41m

Las Vegas Harry Reid Intl

Sun 3/1

11:03 pm-2:39 pm

1 stop12h 36m

$238

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 Las Vegas from

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

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 month to fly to Las Vegas?

The month of January is, on average, the cheapest month to fly to Las Vegas from Islip, New York, with most prices found around $362. The month of August is another great option to travel to Las Vegas, with average flight prices from Islip, New York averaging around $398.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $287. Flights from Islip, New York to Las Vegas on a Thursday will generally be more expensive and average around $368. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Las Vegas?

The cheapest time of day to fly to Las Vegas is in the morning when flights can be purchased for as low as $316. Flights to Las Vegas are more costly at noon, with an average ticket price of $368. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Islip, New York to Las Vegas flights?

You could potentially save up to 2% on your flight if you consider stops on a Islip, New York to Las Vegas flight.

When to book flights from Islip, New York to Las Vegas

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

Cheap Islip, New York to Las Vegas (ISP to LAS) flight deals and tips

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

Fastest flight time

8h 40m

Direct flights

None
The fastest flight from Islip, New York to Las Vegas takes 8h 40m
There are no direct flights from Islip, New York to Las Vegas. There are no popular flight routes from Islip, New York to Las Vegas.
Search flight deals

  • How far is Islip Long Island to Las Vegas Harry Reid Intl by plane?

    A flight from Islip Long Island to Las Vegas Harry Reid Intl will travel around 2267.0 mi. 8h 40m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Islip Long Island Airport to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Islip Long Island Airport to Las Vegas Harry Reid Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Islip Long Island Airport to Las Vegas Harry Reid Intl Airport?

  • How old do you have to be to fly from Islip Long Island Airport to Las Vegas Harry Reid Intl 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 Islip Long Island Airport to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The necessary travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Islip, New York to Las Vegas

Compare and see reviews for airlines that fly from Islip, New York to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $150Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
JetBluePriceFrom $169Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
SouthwestPriceFrom $380Free CancellationRating
7.9
4,250 reviews
Search Southwest flights

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Laughlin
Mount Charleston
Henderson
Mesquite
Paradise
North Las Vegas
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Sunrise Manor
Winchester
Needles

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Las Vegas. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Las Vegas from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Las Vegas?

Once you have performed a search for Islip to Las Vegas flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Islip to Las Vegas flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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