Islip

$106+ Cheap flights from Las Vegas to Islip, NY (LAS - ISP)

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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Apr 11 — Apr 181
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1. Tell us where you want to go

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Cheap flight deals from Las Vegas to Islip

Cheapest flights from Las Vegas to Islip
Explore the most affordable flight options available from Las Vegas to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This CheapOair deal was found by Cheapflights users on 3/10. 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.
Thu 4/2311:29 pm
LAS
-
ISP
1 stop17h 07m
Frontier
Sun 4/264:07 pm
ISP
-
LAS
1 stop9h 34m
Frontier
Deal found 3/10$200
This CheapOair deal was found by Cheapflights users on 3/11. 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.
Fri 5/111:54 pm
LAS
-
ISP
1 stop30h 19m
Frontier
Sun 5/38:31 pm
ISP
-
LAS
1 stop14h 55m
Frontier
Deal found 3/11$220
This CheapOair deal was found by Cheapflights users on 3/10. 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.
Tue 4/1411:54 pm
LAS
-
ISP
1 stop30h 39m
Frontier
Thu 4/168:31 pm
ISP
-
LAS
1 stop14h 55m
Frontier
Deal found 3/10$265
This CheapOair deal was found by Cheapflights users on 3/11. 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.
Sat 5/308:00 am
LAS
-
ISP
1 stop23h 05m
Frontier
Wed 6/1010:03 am
ISP
-
LAS
1 stop15h 26m
Frontier
Deal found 3/11$290
This Expedia deal was found by Cheapflights users on 3/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:13 am
LAS
-
ISP
1 stop18h 55m
Frontier
Mon 7/2010:03 am
ISP
-
LAS
1 stop15h 26m
Frontier
Deal found 3/11$330
This CheapOair deal was found by Cheapflights users on 3/8. 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.
Tue 3/3111:59 pm
LAS
-
ISP
1 stop17h 00m
Frontier
Tue 4/75:43 pm
ISP
-
LAS
1 stop31h 06m
Frontier
Deal found 3/8$356
This CheapOair deal was found by Cheapflights users on 3/7. 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.
Thu 6/2511:59 pm
LAS
-
ISP
1 stop30h 09m
Frontier
Mon 6/2910:03 am
ISP
-
LAS
1 stop26h 50m
Frontier
Deal found 3/7$415
This Frontier deal was found by Cheapflights users on 3/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:17 pm
LAS
-
ISP
1 stop10h 48m
Frontier
Sun 5/3111:00 am
ISP
-
LAS
1 stop12h 47m
Frontier
Deal found 3/11$460
This CheapOair deal was found by Cheapflights users on 3/11. 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.
Mon 5/188:00 am
LAS
-
ISP
1 stop24h 00m
Frontier
Fri 5/226:43 pm
ISP
-
LAS
1 stop9h 10m
Frontier
Deal found 3/11$463
This Southwest deal was found by Cheapflights users on 3/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:25 pm
LAS
-
ISP
2 stops9h 25m
Southwest
Mon 7/2012:30 pm
ISP
-
LAS
1 stop8h 20m
Southwest
Deal found 3/11$472
This Frontier deal was found by Cheapflights users on 3/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:59 pm
LAS
-
ISP
1 stop11h 35m
Frontier
Wed 7/2910:03 am
ISP
-
LAS
1 stop15h 26m
Frontier
Deal found 3/9$484

Find flight deals from Las Vegas to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Las Vegas (LAS) to Islip (ISP). 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(CheapOair)

One-way from

$106
(CheapOair)

Popular in

June

Cheapest in

May

Average price

$707
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Islip Long Island flight deals.
Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Islip Long Island flights.
From Las Vegas Harry Reid Intl to Islip Long Island
One-way flight from Las Vegas Harry Reid Intl to Islip Long Island
High demand for flights, 3% potential price rise
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to Islip 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 March 12, 2026.
Use the filters below to find and compare flights from Las Vegas to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 4/23

11:29 pm-7:36 pm

1 stop17h 07m

Islip Long Island

Sun 4/26

4:07 pm-10:41 pm

1 stop9h 34m

$200

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 5/1

11:54 pm-9:13 am

1 stop30h 19m

Islip Long Island

Sun 5/3

8:31 pm-8:26 am

1 stop14h 55m

$220

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Sat 5/30

8:00 am-10:05 am

1 stop23h 05m

Islip Long Island

Wed 6/10

10:03 am-10:29 pm

1 stop15h 26m

$290

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 6/25

11:59 pm-9:08 am

1 stop30h 09m

Islip Long Island

Mon 6/29

10:03 am-9:53 am

1 stop26h 50m

$415

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 5/18

8:00 am-11:00 am

1 stop24h 00m

Islip Long Island

Fri 5/22

6:43 pm-12:53 am

1 stop9h 10m

$463
Quickest round-trip

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 7/15

11:25 pm-11:50 am

2 stops9h 25m

Islip Long Island

Mon 7/20

12:30 pm-5:50 pm

1 stop8h 20m

$472

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 7/22

11:59 pm-2:34 pm

1 stop11h 35m

Islip Long Island

Wed 7/29

10:03 am-10:29 pm

1 stop15h 26m

$484

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 5/25

10:12 pm-5:17 pm

1 stop16h 05m

Islip Long Island

Fri 5/29

11:00 am-8:47 pm

1 stop12h 47m

$531

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 4/6

11:59 pm-4:58 pm

1 stop13h 59m

Islip Long Island

Sun 4/12

12:08 pm-10:36 pm

1 stop13h 28m

$535

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 3/23

11:59 pm-11:10 am

2 stops32h 11m

Islip Long Island

Fri 3/27

1:42 pm-10:43 pm

1 stop12h 01m

$562

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 23 resultsSorted by cheapest first
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2
3

Compare providers for flights from Las Vegas to Islip

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 Las Vegas to Islip in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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 Las Vegas-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Las Vegas-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Las Vegas-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Las Vegas-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub 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 Las Vegas-Islip, New York 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 Las Vegas to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Las Vegas 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 Las Vegas to Islip

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

Currently, January is the cheapest month in which you can book a flight from Las Vegas to Islip, New York (average of $57). Flying from Las Vegas to Islip, New York in April is currently the most expensive (average of $157). 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.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated March 12, 2026.
Read through reviews of airlines operating flights from Las Vegas to Islip, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Islip. 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 Las Vegas to Islip, New York?

    Departing from Las Vegas to Islip, New York will take you 17h 07m. Las Vegas and Islip, New York are separated by a distance of 2275 mi.

  • What is the cheapest airline to fly from Las Vegas to Islip, New York round-trip?

    Our cheapest airline available from Las Vegas to Islip, New York is Southwest. Our recent data shows that you can find tickets from as low as $356 on this airline. Users have found that Southwest is 34% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Las Vegas to Islip 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 Las Vegas to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Las Vegas to Islip, New York (average of $57). Flying from Las Vegas to Islip, New York in April is currently the most expensive (average of $157). 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 Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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Top airline flying from Las Vegas to Islip

Discover the top airline that operate flights from Las Vegas to Islip. 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 March 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$482FlexibilityNo cancel feeOn-time63%

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