Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Islip, New York to Las Vegas from $150

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 8/19. 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

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
3:20 pm - 8:00 pm
ISP
-
LAS
7h 40m
1 stop
Southwest Logo
11:00 pm - 10:15 am
LAS
-
ISP
8h 15m
1 stop
$300Southwest
Tue, Sep 22 - Tue, Sep 29
Southwest Logo
12:55 pm - 8:00 pm
ISP
-
LAS
10h 05m
1 stop
Southwest Logo
12:20 am - 12:10 pm
LAS
-
ISP
8h 50m
2 stops
$306Southwest
Tue, Sep 22 - Mon, Sep 28
Southwest Logo
3:20 pm - 9:45 pm
ISP
-
LAS
9h 25m
2 stops
Southwest Logo
12:20 am - 12:10 pm
LAS
-
ISP
8h 50m
2 stops
$311Southwest
Tue, Sep 22 - Mon, Sep 28
Southwest Logo
3:40 pm - 8:15 pm
ISP
-
LAS
7h 35m
1 stop
Southwest Logo
6:45 am - 5:05 pm
LAS
-
ISP
7h 20m
1 stop
$363Southwest
Sat, Oct 31 - Mon, Nov 2
Southwest Logo
6:00 am - 1:55 pm
ISP
-
LAS
10h 55m
2 stops
Southwest Logo
6:45 am - 5:05 pm
LAS
-
ISP
7h 20m
1 stop
$368Southwest
Sat, Oct 31 - Mon, Nov 2
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
Mon, Aug 24 - Tue, Aug 25
Southwest Logo
3:20 pm - 8:00 pm
ISP
-
LAS
7h 40m
1 stop
Southwest Logo
6:50 am - 4:25 pm
LAS
-
ISP
6h 35m
1 stop
$384Southwest
Tue, Aug 25 - Thu, Aug 27
Southwest Logo
3:20 pm - 9:40 pm
ISP
-
LAS
9h 20m
2 stops
Southwest Logo
6:50 am - 4:25 pm
LAS
-
ISP
6h 35m
1 stop
$389Southwest
Tue, Aug 25 - Thu, Aug 27
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
Fri, Aug 21 - Tue, Aug 25
Southwest Logo
6:05 am - 12:50 pm
ISP
-
LAS
9h 45m
2 stops
Southwest Logo
5:00 am - 4:25 pm
LAS
-
ISP
8h 25m
2 stops
$394Southwest
Tue, Aug 25 - Thu, Aug 27

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Frontier flights from Islip, New York to Las Vegas

Our best Frontier deals on Islip, New York to Las Vegas flight tickets
Frontier
Aug 24
ISP10:48 amIslip Long Island
12h 57m
1 stop
LAS8:45 pmLas Vegas Harry Reid Intl
Aug 25
LAS8:17 pmLas Vegas Harry Reid Intl
10h 46m
1 stop
ISP10:03 amIslip Long Island
$370
Frontier
Aug 21
ISP10:48 amIslip Long Island
12h 57m
1 stop
LAS8:45 pmLas Vegas Harry Reid Intl
Aug 25
LAS8:17 pmLas Vegas Harry Reid Intl
10h 46m
1 stop
ISP10:03 amIslip Long Island
$390
Frontier
Aug 21
ISP10:48 amIslip Long Island
12h 57m
1 stop
LAS8:45 pmLas Vegas Harry Reid Intl
Aug 29
LAS10:12 pmLas Vegas Harry Reid Intl
8h 51m
1 stop
ISP10:03 amIslip Long Island
$410

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
Jun 19
ISP8:31 pmIslip Long Island
17h 09m
1 stop
LAS10:40 amLas Vegas Harry Reid Intl
Jun 21
LAS11:25 pmLas Vegas Harry Reid Intl
11h 03m
2 stops
ISP1:28 pmIslip Long Island
$780
Breeze Airways
Jun 22
ISP8:43 pmIslip Long Island
16h 33m
2 stops
LAS10:16 amLas Vegas Harry Reid Intl
Jun 24
LAS11:34 amLas Vegas Harry Reid Intl
26h 36m
3 stops
ISP5:10 pmIslip Long Island
$940
Breeze Airways
Jun 15
ISP8:43 pmIslip Long Island
16h 33m
2 stops
LAS10:16 amLas Vegas Harry Reid Intl
Jun 25
LAS11:25 pmLas Vegas Harry Reid Intl
11h 03m
2 stops
ISP1:28 pmIslip Long Island
$1,002

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 11, 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 9/22

3:20 pm-8:00 pm

1 stop7h 40m

Las Vegas Harry Reid Intl

Tue 9/29

11:00 pm-10:15 am

1 stop8h 15m

$300

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

Mon 9/28

12:20 am-12:10 pm

2 stops8h 50m

$306

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

Mon 9/28

12:20 am-12:10 pm

2 stops8h 50m

$311

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 10/31

3:40 pm-8:15 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Mon 11/2

6:45 am-5:05 pm

1 stop7h 20m

$363

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 10/31

6:00 am-1:55 pm

2 stops10h 55m

Las Vegas Harry Reid Intl

Mon 11/2

6:45 am-5:05 pm

1 stop7h 20m

$368

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 8/24

10:48 am-8:45 pm

1 stop12h 57m

Las Vegas Harry Reid Intl

Tue 8/25

8:17 pm-10:03 am

1 stop10h 46m

$370
Quickest round-trip

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 8/25

3:20 pm-8:00 pm

1 stop7h 40m

Las Vegas Harry Reid Intl

Thu 8/27

6:50 am-4:25 pm

1 stop6h 35m

$384

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 8/25

3:20 pm-9:40 pm

2 stops9h 20m

Las Vegas Harry Reid Intl

Thu 8/27

6:50 am-4:25 pm

1 stop6h 35m

$389

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Fri 8/21

10:48 am-8:45 pm

1 stop12h 57m

Las Vegas Harry Reid Intl

Tue 8/25

8:17 pm-10:03 am

1 stop10h 46m

$390

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Tue 8/25

6:05 am-12:50 pm

2 stops9h 45m

Las Vegas Harry Reid Intl

Thu 8/27

5:00 am-4:25 pm

2 stops8h 25m

$394

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 August is, on average, the cheapest month to fly to Las Vegas from Islip, New York, with most prices found around $357. The month of January is another great option to travel to Las Vegas, with average flight prices from Islip, New York averaging around $362.

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 $328. Flights from Islip, New York to Las Vegas on a Thursday will generally be more expensive and average around $419. 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 $359. Flights to Las Vegas are more costly at noon, with an average ticket price of $405. 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 40m

Direct flights

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

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 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
SouthwestPriceFrom $379Free CancellationRating
7.9
4,235 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.

An easier way to manage your Las Vegas trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 7/11
Sat 7/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States