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Cheap flights from Islip, New York to Las Vegas from $176

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 9/8. 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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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
4:41 pm - 11:10 am
ISP
-
LAS
21h 29m
1 stop
Frontier Logo
9:51 pm - 10:03 am
LAS
-
ISP
9h 12m
1 stop
$363Frontier
Tue, Jun 23 - Wed, Jul 1
Southwest Logo
4:25 pm - 10:25 pm
ISP
-
LAS
9h 00m
1 stop
Southwest Logo
10:50 pm - 12:40 pm
LAS
-
ISP
10h 50m
1 stop
$364Southwest
Wed, Oct 14 - Mon, Oct 19
Southwest Logo
6:10 am - 12:50 pm
ISP
-
LAS
9h 40m
2 stops
Southwest Logo
10:50 pm - 12:40 pm
LAS
-
ISP
10h 50m
1 stop
$369Southwest
Wed, Oct 14 - Mon, Oct 19
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
$370Frontier
Sat, Aug 29 - Tue, Sep 1
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
$390Frontier
Sat, Aug 29 - Tue, Sep 1
Frontier Logo
7:46 pm - 12:19 am
ISP
-
LAS
31h 33m
1 stop
Frontier Logo
10:18 pm - 7:01 pm
LAS
-
ISP
17h 43m
1 stop
$401Frontier
Fri, Jul 10 - Fri, Jul 17
Frontier Logo
9:52 pm - 11:10 am
ISP
-
LAS
16h 18m
1 stop
Frontier Logo
11:36 pm - 7:05 pm
LAS
-
ISP
16h 29m
1 stop
$402Frontier
Mon, Jun 15 - Fri, Jun 19
Frontier Logo
7:46 pm - 12:19 am
ISP
-
LAS
31h 33m
1 stop
Frontier Logo
9:42 pm - 9:53 am
LAS
-
ISP
9h 11m
1 stop
$403Frontier
Fri, Jul 24 - Fri, Jul 31
Frontier Logo
10:57 am - 9:17 pm
ISP
-
LAS
13h 20m
1 stop
Frontier Logo
9:42 pm - 9:53 am
LAS
-
ISP
9h 11m
1 stop
$409Frontier
Fri, Jul 24 - Thu, Aug 13
Frontier Logo
7:46 pm - 12:19 am
ISP
-
LAS
31h 33m
1 stop
Frontier Logo
9:42 pm - 9:53 am
LAS
-
ISP
9h 11m
1 stop
$410Frontier
Fri, Jul 24 - Sun, Jul 26

Frontier flights from Islip, New York to Las Vegas

Our best Frontier deals on Islip, New York to Las Vegas flight tickets
Frontier
Jun 23
ISP4:41 pmIslip Long Island
21h 29m
1 stop
LAS11:10 amLas Vegas Harry Reid Intl
Jul 1
LAS9:51 pmLas Vegas Harry Reid Intl
9h 12m
1 stop
ISP10:03 amIslip Long Island
$363
Frontier
Jun 21
ISP9:52 pmIslip Long Island
26h 08m
1 stop
LAS9:00 pmLas Vegas Harry Reid Intl
Jun 30
LAS9:51 pmLas Vegas Harry Reid Intl
20h 06m
1 stop
ISP8:57 pmIslip Long Island
$370
Frontier
Jul 10
ISP10:57 amIslip Long Island
13h 20m
1 stop
LAS9:17 pmLas Vegas Harry Reid Intl
Jul 21
LAS9:42 pmLas Vegas Harry Reid Intl
9h 11m
1 stop
ISP9:53 amIslip Long Island
$390

Southwest flights from Islip, New York to Las Vegas

Our best Southwest deals on Islip, New York to Las Vegas flight tickets
Southwest
Oct 14
ISP4:25 pmIslip Long Island
9h 00m
1 stop
LAS10:25 pmLas Vegas Harry Reid Intl
Oct 19
LAS10:50 pmLas Vegas Harry Reid Intl
10h 50m
1 stop
ISP12:40 pmIslip Long Island
$364
Southwest
Oct 14
ISP6:10 amIslip Long Island
9h 40m
2 stops
LAS12:50 pmLas Vegas Harry Reid Intl
Oct 19
LAS10:50 pmLas Vegas Harry Reid Intl
10h 50m
1 stop
ISP12:40 pmIslip Long Island
$369
Southwest
Aug 25
ISP3:20 pmIslip Long Island
7h 40m
1 stop
LAS8:00 pmLas Vegas Harry Reid Intl
Aug 28
LAS11:30 pmLas Vegas Harry Reid Intl
9h 35m
2 stops
ISP12:05 pmIslip Long Island
$414

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 May 29, 2026.
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

Cheapest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 6/23

4:41 pm-11:10 am

1 stop21h 29m

Las Vegas Harry Reid Intl

Wed 7/1

9:51 pm-10:03 am

1 stop9h 12m

$363
Quickest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 10/14

4:25 pm-10:25 pm

1 stop9h 00m

Las Vegas Harry Reid Intl

Mon 10/19

10:50 pm-12:40 pm

1 stop10h 50m

$364

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 10/14

6:10 am-12:50 pm

2 stops9h 40m

Las Vegas Harry Reid Intl

Mon 10/19

10:50 pm-12:40 pm

1 stop10h 50m

$369

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 8/29

10:48 am-8:45 pm

1 stop12h 57m

Las Vegas Harry Reid Intl

Tue 9/1

8:17 pm-10:03 am

1 stop10h 46m

$370

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 8/29

10:48 am-8:45 pm

1 stop12h 57m

Las Vegas Harry Reid Intl

Tue 9/1

8:17 pm-10:03 am

1 stop10h 46m

$390

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 7/10

7:46 pm-12:19 am

1 stop31h 33m

Las Vegas Harry Reid Intl

Fri 7/17

10:18 pm-7:01 pm

1 stop17h 43m

$401

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 6/15

9:52 pm-11:10 am

1 stop16h 18m

Las Vegas Harry Reid Intl

Fri 6/19

11:36 pm-7:05 pm

1 stop16h 29m

$402

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 7/24

7:46 pm-12:19 am

1 stop31h 33m

Las Vegas Harry Reid Intl

Fri 7/31

9:42 pm-9:53 am

1 stop9h 11m

$403

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 7/24

10:57 am-9:17 pm

1 stop13h 20m

Las Vegas Harry Reid Intl

Thu 8/13

9:42 pm-9:53 am

1 stop9h 11m

$409

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 7/24

7:46 pm-12:19 am

1 stop31h 33m

Las Vegas Harry Reid Intl

Sun 7/26

9:42 pm-9:53 am

1 stop9h 11m

$410

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 typical price of a round-trip flight between Islip, New York and Las Vegas?

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 October is another great option to travel to Las Vegas, with average flight prices from Islip, New York averaging around $379.

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

Our data shows that Saturday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $316. Flights from Islip, New York to Las Vegas on a Thursday will generally be more expensive and average around $399. 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 afternoon when flights can be purchased for as low as $350. Flights to Las Vegas are more costly at noon, with an average ticket price of $357. 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 51% 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

7h 10m

Direct flights

None
The fastest flight from Islip, New York to Las Vegas takes 7h 10m
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

Frequently asked questions about flying from Islip, New York to Las Vegas

  • 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. 7h 10m 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
SouthwestPriceFrom $379Free CancellationRating
8.0
4,264 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
Paradise
Henderson
North Las Vegas
Kingman
Mesquite
Sunrise Manor
Pahrump
Furnace Creek
Primm
Boulder City
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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