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Cheap flights from Islip, New York to Las Vegas from $201

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 7/3. 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
1 adult, Economy, 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.
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
$351Southwest
Tue, Oct 13 - Tue, Oct 20
Southwest Logo
4:25 pm - 10:25 pm
ISP
-
LAS
9h 00m
1 stop
Southwest Logo
9:45 am - 10:15 pm
LAS
-
ISP
9h 30m
2 stops
$356Southwest
Tue, Oct 13 - Tue, Oct 20
Southwest Logo
6:10 am - 2:50 pm
ISP
-
LAS
11h 40m
2 stops
Southwest Logo
9:45 am - 10:15 pm
LAS
-
ISP
9h 30m
2 stops
$361Southwest
Tue, Oct 13 - Tue, Oct 20
Southwest Logo
12:55 pm - 8:00 pm
ISP
-
LAS
10h 05m
1 stop
Southwest Logo
10:55 pm - 12:05 pm
LAS
-
ISP
10h 10m
1 stop
$366Southwest
Tue, Sep 22 - Sat, Sep 26
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
Southwest Logo
3:20 pm - 9:45 pm
ISP
-
LAS
9h 25m
2 stops
Southwest Logo
10:55 pm - 12:05 pm
LAS
-
ISP
10h 10m
1 stop
$371Southwest
Tue, Sep 22 - Sat, Sep 26
Multiple Airlines Logo
2:33 pm - 10:49 pm
ISP
-
LAS
11h 16m
2 stops
Multiple Airlines Logo
9:42 pm - 9:53 am
LAS
-
ISP
9h 11m
1 stop
$372Multiple Airlines
Wed, Aug 5 - Fri, Aug 7
Southwest Logo
3:20 pm - 9:45 pm
ISP
-
LAS
9h 25m
2 stops
Southwest Logo
1:05 am - 2:30 pm
LAS
-
ISP
10h 25m
2 stops
$376Southwest
Tue, Sep 22 - Fri, Sep 25
Frontier Logo
4:41 pm - 9:26 am
ISP
-
LAS
19h 45m
1 stop
Frontier Logo
10:05 pm - 9:33 am
LAS
-
ISP
32h 28m
2 stops
$381Frontier
Tue, Sep 8 - Tue, Sep 15
Frontier Logo
9:52 pm - 9:00 pm
ISP
-
LAS
26h 08m
1 stop
Frontier Logo
9:51 pm - 8:57 pm
LAS
-
ISP
20h 06m
1 stop
$390Frontier
Sun, Jun 21 - Tue, Jun 23

Southwest flights from Islip, New York to Las Vegas

Our best Southwest deals on Islip, New York to Las Vegas flight tickets
Southwest
Oct 13
ISP4:25 pmIslip Long Island
9h 00m
1 stop
LAS10:25 pmLas Vegas Harry Reid Intl
Oct 20
LAS10:50 pmLas Vegas Harry Reid Intl
10h 50m
1 stop
ISP12:40 pmIslip Long Island
$351
Southwest
Oct 13
ISP4:25 pmIslip Long Island
9h 00m
1 stop
LAS10:25 pmLas Vegas Harry Reid Intl
Oct 20
LAS9:45 amLas Vegas Harry Reid Intl
9h 30m
2 stops
ISP10:15 pmIslip Long Island
$356
Southwest
Oct 13
ISP6:10 amIslip Long Island
11h 40m
2 stops
LAS2:50 pmLas Vegas Harry Reid Intl
Oct 20
LAS9:45 amLas Vegas Harry Reid Intl
9h 30m
2 stops
ISP10:15 pmIslip Long Island
$361

JetBlue flights from Islip, New York to Las Vegas

Our best JetBlue deals on Islip, New York to Las Vegas flight tickets
JetBlue
Jul 7
ISP4:58 pmIslip Long Island
8h 48m
1 stop
LAS10:46 pmLas Vegas Harry Reid Intl
Aug 4
LAS7:00 amLas Vegas Harry Reid Intl
11h 44m
1 stop
ISP9:44 pmIslip Long Island
$466
JetBlue
Jul 7
ISP4:58 pmIslip Long Island
8h 48m
1 stop
LAS10:46 pmLas Vegas Harry Reid Intl
Aug 4
LAS7:00 amLas Vegas Harry Reid Intl
11h 44m
1 stop
ISP9:44 pmIslip Long Island
$476
JetBlue
Jul 7
ISP4:58 pmIslip Long Island
8h 48m
1 stop
LAS10:46 pmLas Vegas Harry Reid Intl
Aug 4
LAS7:00 amLas Vegas Harry Reid Intl
11h 44m
1 stop
ISP9:44 pmIslip Long Island
$492

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 June 5, 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 10/13

4:25 pm-10:25 pm

1 stop9h 00m

Las Vegas Harry Reid Intl

Tue 10/20

10:50 pm-12:40 pm

1 stop10h 50m

$351
Quickest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 10/13

4:25 pm-10:25 pm

1 stop9h 00m

Las Vegas Harry Reid Intl

Tue 10/20

9:45 am-10:15 pm

2 stops9h 30m

$356

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 10/13

6:10 am-2:50 pm

2 stops11h 40m

Las Vegas Harry Reid Intl

Tue 10/20

9:45 am-10:15 pm

2 stops9h 30m

$361

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 9/22

12:55 pm-8:00 pm

1 stop10h 05m

Las Vegas Harry Reid Intl

Sat 9/26

10:55 pm-12:05 pm

1 stop10h 10m

$366

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

Tue 9/22

3:20 pm-9:45 pm

2 stops9h 25m

Las Vegas Harry Reid Intl

Sat 9/26

10:55 pm-12:05 pm

1 stop10h 10m

$371

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Wed 8/5

2:33 pm-10:49 pm

2 stops11h 16m

Las Vegas Harry Reid Intl

Fri 8/7

9:42 pm-9:53 am

1 stop9h 11m

$372

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 9/22

3:20 pm-9:45 pm

2 stops9h 25m

Las Vegas Harry Reid Intl

Fri 9/25

1:05 am-2:30 pm

2 stops10h 25m

$376

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 9/8

4:41 pm-9:26 am

1 stop19h 45m

Las Vegas Harry Reid Intl

Tue 9/15

10:05 pm-9:33 am

2 stops32h 28m

$381

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 6/21

9:52 pm-9:00 pm

1 stop26h 08m

Las Vegas Harry Reid Intl

Tue 6/23

9:51 pm-8:57 pm

1 stop20h 06m

$390

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 $327. Flights from Islip, New York to Las Vegas on a Thursday will generally be more expensive and average around $416. 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 evening when flights can be purchased for as low as $356. Flights to Las Vegas are more costly at noon, with an average ticket price of $407. 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
4,254 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
Boulder City
Primm
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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