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Cheap flights from Islip, New York to Las Vegas from $110

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 5/29. 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 Islip, New York to Las Vegas

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:02 pm - 8:47 pm
ISP
-
LAS
29h 45m
1 stop
Frontier Logo
10:25 pm - 5:58 pm
LAS
-
ISP
16h 33m
1 stop
$215Frontier
Tue, May 26 - Fri, May 29
Frontier Logo
11:00 am - 8:47 pm
ISP
-
LAS
12h 47m
1 stop
Frontier Logo
9:22 am - 10:05 am
LAS
-
ISP
21h 43m
1 stop
$230Frontier
Wed, May 20 - Wed, May 27
Frontier Logo
6:43 pm - 12:53 am
ISP
-
LAS
9h 10m
1 stop
Frontier Logo
10:02 pm - 10:05 am
LAS
-
ISP
9h 03m
1 stop
$235Frontier
Sat, May 23 - Thu, May 28
Frontier Logo
11:00 am - 8:47 pm
ISP
-
LAS
12h 47m
1 stop
Frontier Logo
10:02 pm - 10:05 am
LAS
-
ISP
9h 03m
1 stop
$250Frontier
Wed, May 27 - Sat, May 30
Frontier Logo
6:43 pm - 12:53 am
ISP
-
LAS
9h 10m
1 stop
Frontier Logo
8:00 am - 10:05 am
LAS
-
ISP
23h 05m
1 stop
$255Frontier
Sat, May 30 - Tue, Jun 2
Frontier Logo
6:59 pm - 12:54 am
ISP
-
LAS
8h 55m
1 stop
Frontier Logo
10:02 pm - 10:05 am
LAS
-
ISP
9h 03m
1 stop
$256Frontier
Fri, May 15 - Thu, May 21
Frontier Logo
11:00 am - 8:47 pm
ISP
-
LAS
12h 47m
1 stop
Frontier Logo
10:02 pm - 10:05 am
LAS
-
ISP
9h 03m
1 stop
$270Frontier
Thu, May 28 - Sat, May 30
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
$284Frontier
Mon, Jun 15 - Thu, Jun 18
Frontier Logo
10:48 am - 8:20 pm
ISP
-
LAS
12h 32m
1 stop
Frontier Logo
9:47 pm - 10:03 am
LAS
-
ISP
9h 16m
1 stop
$290Frontier
Thu, Jun 11 - Sun, Jun 14
Frontier Logo
11:00 am - 8:47 pm
ISP
-
LAS
12h 47m
1 stop
Frontier Logo
9:22 am - 10:27 am
LAS
-
ISP
22h 05m
1 stop
$300Frontier
Wed, May 13 - Wed, May 20

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Frontier flights from Islip, New York to Las Vegas

Our best Frontier deals on Islip, New York to Las Vegas flight tickets
Frontier
May 26
ISP6:02 pmIslip Long Island
29h 45m
1 stop
LAS8:47 pmLas Vegas Harry Reid Intl
May 29
LAS10:25 pmLas Vegas Harry Reid Intl
16h 33m
1 stop
ISP5:58 pmIslip Long Island
$215
Frontier
May 6
ISP11:00 amIslip Long Island
12h 47m
1 stop
LAS8:47 pmLas Vegas Harry Reid Intl
May 15
LAS10:25 pmLas Vegas Harry Reid Intl
16h 33m
1 stop
ISP5:58 pmIslip Long Island
$225
Frontier
May 20
ISP11:00 amIslip Long Island
12h 47m
1 stop
LAS8:47 pmLas Vegas Harry Reid Intl
May 27
LAS9:22 amLas Vegas Harry Reid Intl
21h 43m
1 stop
ISP10:05 amIslip Long Island
$230

Southwest flights from Islip, New York to Las Vegas

Our best Southwest deals on Islip, New York to Las Vegas flight tickets
Southwest
Sep 10
ISP10:20 amIslip Long Island
9h 45m
1 stop
LAS5:05 pmLas Vegas Harry Reid Intl
Sep 19
LAS6:30 amLas Vegas Harry Reid Intl
10h 00m
1 stop
ISP7:30 pmIslip Long Island
$439
Southwest
Sep 10
ISP12:35 pmIslip Long Island
7h 30m
1 stop
LAS5:05 pmLas Vegas Harry Reid Intl
Sep 18
LAS11:30 pmLas Vegas Harry Reid Intl
9h 35m
2 stops
ISP12:05 pmIslip Long Island
$444
Southwest
May 6
ISP9:00 amIslip Long Island
9h 35m
2 stops
LAS3:35 pmLas Vegas Harry Reid Intl
May 15
LAS11:55 pmLas Vegas Harry Reid Intl
8h 40m
2 stops
ISP11:35 amIslip Long Island
$666

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 April 30, 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 5/26

6:02 pm-8:47 pm

1 stop29h 45m

Las Vegas Harry Reid Intl

Fri 5/29

10:25 pm-5:58 pm

1 stop16h 33m

$215

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 5/20

11:00 am-8:47 pm

1 stop12h 47m

Las Vegas Harry Reid Intl

Wed 5/27

9:22 am-10:05 am

1 stop21h 43m

$230

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 5/23

6:43 pm-12:53 am

1 stop9h 10m

Las Vegas Harry Reid Intl

Thu 5/28

10:02 pm-10:05 am

1 stop9h 03m

$235

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 5/27

11:00 am-8:47 pm

1 stop12h 47m

Las Vegas Harry Reid Intl

Sat 5/30

10:02 pm-10:05 am

1 stop9h 03m

$250

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 5/30

6:43 pm-12:53 am

1 stop9h 10m

Las Vegas Harry Reid Intl

Tue 6/2

8:00 am-10:05 am

1 stop23h 05m

$255
Quickest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 5/15

6:59 pm-12:54 am

1 stop8h 55m

Las Vegas Harry Reid Intl

Thu 5/21

10:02 pm-10:05 am

1 stop9h 03m

$256

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 5/28

11:00 am-8:47 pm

1 stop12h 47m

Las Vegas Harry Reid Intl

Sat 5/30

10:02 pm-10:05 am

1 stop9h 03m

$270

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

Thu 6/18

11:36 pm-7:05 pm

1 stop16h 29m

$284

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 6/11

10:48 am-8:20 pm

1 stop12h 32m

Las Vegas Harry Reid Intl

Sun 6/14

9:47 pm-10:03 am

1 stop9h 16m

$290

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 5/13

11:00 am-8:47 pm

1 stop12h 47m

Las Vegas Harry Reid Intl

Wed 5/20

9:22 am-10:27 am

1 stop22h 05m

$300

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 March is another great option to travel to Las Vegas, with average flight prices from Islip, New York averaging around $396.

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 $309. Flights from Islip, New York to Las Vegas on a Thursday will generally be more expensive and average around $388. 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 at noon when flights can be purchased for as low as $337. Flights to Las Vegas are more costly in the evening, with an average ticket price of $350. Departure times in the evening 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 4% 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

10h 15m

Direct flights

None
The fastest flight from Islip, New York to Las Vegas takes 10h 15m
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. 10h 15m 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
4,314 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
Mesquite
Kingman
Pahrump
Furnace Creek
Boulder City
Primm
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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