HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Las Vegas

$71+ Cheap flights from Islip, NY to Las Vegas (ISP - LAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAS
dic. 3 — dic. 101
mié. 12/3
mié. 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to Las Vegas with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Islip to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$71
(CheapOair)

Popular in

June

Cheapest in

January

Average price

$422
Provider with most accurate pricing for Islip Long Island-Las Vegas Harry Reid Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Las Vegas Harry Reid Intl flights.
Search Deals
From Islip Long Island to Las Vegas Harry Reid Intl
Search Deals
One-way flight from Islip Long Island to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Islip to Las Vegas

Cheapest flights from Islip to Las Vegas
Explore the most affordable flight options available from Islip to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 3, 2025.

This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
mar. 11/1811:02 pmLAS - ISP
1 stop8h 35mFrontier
Deal found 11/2$130
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/810:19 amISP - LAS
1 stop27h 04mFrontier
jue. 12/1110:20 pmLAS - ISP
1 stop18h 14mFrontier
Deal found 11/3$138
This Booking.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
mié. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 11/2$141
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/610:19 amISP - LAS
1 stop26h 24mFrontier
mié. 12/1010:20 pmLAS - ISP
1 stop7h 53mFrontier
Deal found 11/2$146
This CheapOair deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/124:58 pmISP - LAS
1 stop20h 09mFrontier
mié. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 11/3$176
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/154:58 pmISP - LAS
1 stop20h 09mFrontier
mié. 11/193:59 pmLAS - ISP
1 stop14h 08mFrontier
Deal found 11/2$185
This Kiwi.com deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/28:29 pmISP - LAS
1 stop16h 54mFrontier
mar. 12/910:20 pmLAS - ISP
1 stop21h 24mFrontier
Deal found 11/2$193
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:37 pmISP - LAS
1 stop18h 30mFrontier
jue. 11/207:00 amLAS - ISP
1 stop24h 37mFrontier
Deal found 11/2$206
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2010:02 amISP - LAS
1 stop27h 01mFrontier
lun. 11/2411:00 pmLAS - ISP
1 stop8h 18mFrontier
Deal found 11/2$211
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/19:02 amISP - LAS
1 stop28h 21mFrontier
vie. 12/510:20 pmLAS - ISP
1 stop7h 53mFrontier
Deal found 11/2$219
This CheapOair deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/104:58 pmISP - LAS
1 stop20h 09mFrontier
mié. 11/1211:02 pmLAS - ISP
1 stop15h 40mFrontier
Deal found 11/2$222

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
Use the filters below to find and compare flights from Islip to Las Vegas that are best for you.

Fly from

Islip

Fly to

Las Vegas

Route

Depart

Return

Price

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

sáb. 12/6

10:19 am-9:43 am

1 stop26h 24m

Las Vegas Harry Reid Intl

mar. 12/9

10:20 pm-10:44 pm

1 stop21h 24m

$138

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

sáb. 12/13

10:19 am-9:43 am

1 stop26h 24m

Las Vegas Harry Reid Intl

sáb. 2/14

10:45 pm-4:06 pm

1 stop14h 21m

$146

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

jue. 1/8

3:34 pm-9:43 am

1 stop21h 09m

Las Vegas Harry Reid Intl

lun. 1/12

10:45 pm-11:39 am

1 stop9h 54m

$146

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

sáb. 11/15

4:58 pm-10:07 am

1 stop20h 09m

Las Vegas Harry Reid Intl

mié. 11/19

3:59 pm-9:07 am

1 stop14h 08m

$185

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

lun. 12/1

9:02 am-10:23 am

1 stop28h 21m

Las Vegas Harry Reid Intl

lun. 12/8

10:20 pm-7:34 pm

1 stop18h 14m

$219

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

jue. 11/13

6:37 pm-10:07 am

1 stop18h 30m

Las Vegas Harry Reid Intl

lun. 11/17

11:02 pm-5:42 pm

1 stop15h 40m

$252

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

vie. 1/9

6:00 am-11:10 pm

1 stop20h 10m

Las Vegas Harry Reid Intl

dom. 1/11

12:15 am-2:39 pm

2 stops11h 24m

$269

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

mié. 12/3

6:00 am-9:43 am

1 stop30h 43m

Las Vegas Harry Reid Intl

sáb. 12/6

10:20 pm-10:20 am

1 stop9h 00m

$274

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

mié. 12/10

11:50 am-6:22 pm

1 stop9h 32m

Las Vegas Harry Reid Intl

mar. 12/16

11:59 pm-11:05 am

1 stop8h 06m

$285

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

dom. 3/1

5:03 pm-9:43 am

1 stop19h 40m

Las Vegas Harry Reid Intl

jue. 3/5

10:45 pm-7:11 pm

1 stop17h 26m

$332

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Islip to Las Vegas

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Las Vegas in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Las Vegas flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-Las Vegas flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Las Vegas flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Islip with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Islip to Las Vegas

What is the cheapest month to book a flight from Islip, New York to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to Las Vegas (average of $84). Flying from Islip, New York to Las Vegas in July is currently the most expensive (average of $136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ISP to LAS?

Find hourly flight availability from Islip to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 3, 2025.

When flying from Islip, New York to Las Vegas, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 14% versus a flight in the morning.

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated noviembre 3, 2025.
See what other customers who have flown with Southwest, JetBlue, and Frontier from Islip to Las Vegas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,237 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,237 reviews
Southwest
8.0
Very good
4,237 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,907 reviews
Southwest
8.0
Very good
4,237 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,116 reviews
Southwest
8.0
Very good
4,237 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Islip to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Islip, New York to Las Vegas?

    There are many flights that can get you from Islip, New York to Las Vegas in 26h 24m. Fly via Frontier to get the fastest option. Islip, New York and Las Vegas are separated by a distance of 2275 mi.

  • What are the cheapest airlines flying from Islip, New York to Las Vegas round-trip?

    Flying on Frontier is currently your cheapest option to Las Vegas, with prices starting at $150. Additional round-trip tickets that might be worth considering are offered by JetBlue and Southwest, with the lowest prices starting at $169 and $380, respectively. These flights start at 68% lower than the current average price 3 months from now.

  • Can I find deals for flights from Islip to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Islip to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Las Vegas.

  • Can I find deals for business class flights from Islip to Las Vegas?

    Yes. Cheapflights offers flight deals from Islip to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to Las Vegas (average of $84). Flying from Islip, New York to Las Vegas in July is currently the most expensive (average of $136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Las Vegas?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Las Vegas

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to Reno flights
Buffalo to Las Vegas flights
Rochester to Las Vegas flights
Newark to Reno flights
LaGuardia to Reno flights
Albany to Las Vegas flights
Syracuse to Las Vegas flights
White Plains to Las Vegas flights
Stewart to Las Vegas flights
Syracuse to Reno flights
Ithaca to Las Vegas flights
Rochester to Reno flights
Albany to Reno flights
Binghamton to Las Vegas flights
Plattsburgh to Las Vegas flights
Buffalo to Reno flights
White Plains to Reno flights
Newark to Twin Falls flights
Elmira to Las Vegas flights
Watertown to Las Vegas flights
Saranac Lake to Las Vegas flights
Rutland to Las Vegas flights
Rochester to Twin Falls flights
Syracuse to Twin Falls flights
LaGuardia to Twin Falls flights
John F Kennedy Intl to Elko flights
Newark to Elko flights
Buffalo to Twin Falls flights
Binghamton to Reno flights
Ogdensburg to Las Vegas flights
Niagara Falls to Las Vegas flights
Ithaca to Reno flights
Stewart to Reno flights
Watertown to Reno flights

Top 3 airlines flying from Islip to Las Vegas

Discover the top 3 airlines that operate flights from Islip to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated noviembre 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$150Average$321FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$169Average$370FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$380Average$502FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.