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Islip

$91+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Dec 31 — Jan 71
Wed 12/31
Wed 1/7
1 adult, Economy
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Cheap 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 December 1, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$218
(CheapOair)

One-way from

$91
(Frontier)

Popular in

December

Cheapest in

March

Average price

$946
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Islip Long Island flights.
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From Las Vegas Harry Reid Intl to Islip Long Island
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One-way flight from Las Vegas Harry Reid Intl to Islip Long Island
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Highest demand for flights based on searches. 24% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Find 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 December 1, 2025.

This CheapOair deal was found by Cheapflights users on 11/30. 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.
Wed 12/1010:20 pmLAS - ISP
1 stop7h 53mFrontier
Wed 12/176:00 amISP - LAS
1 stop30h 43mFrontier
Deal found 11/30$183
This CheapOair deal was found by Cheapflights users on 11/29. 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.
Wed 12/1010:20 pmLAS - ISP
1 stop7h 53mFrontier
Sun 12/1411:15 amISP - LAS
1 stop25h 28mFrontier
Deal found 11/29$208
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/1610:20 pmLAS - ISP
1 stop21h 24mFrontier
Sat 12/206:40 pmISP - LAS
1 stop17h 58mFrontier
Deal found 11/29$228
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/1110:20 pmLAS - ISP
1 stop18h 14mFrontier
Thu 12/1812:20 pmISP - LAS
1 stop23h 59mFrontier
Deal found 11/29$229
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/1210:20 pmLAS - ISP
1 stop7h 53mFrontier
Sun 12/1411:15 amISP - LAS
1 stop25h 28mFrontier
Deal found 11/29$233
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/183:54 pmLAS - ISP
1 stop24h 46mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 11/29$253
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/1610:20 pmLAS - ISP
1 stop21h 24mFrontier
Tue 12/3012:20 pmISP - LAS
1 stop24h 23mFrontier
Deal found 11/29$254
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/610:20 pmLAS - ISP
1 stop9h 00mFrontier
Mon 12/810:19 amISP - LAS
1 stop27h 04mFrontier
Deal found 11/29$255
This CheapOair deal was found by Cheapflights users on 11/29. 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.
Wed 12/1710:20 pmLAS - ISP
1 stop10h 05mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 11/29$258
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/410:20 pmLAS - ISP
1 stop18h 14mFrontier
Sun 12/711:15 amISP - LAS
1 stop25h 28mFrontier
Deal found 11/29$259
This CheapOair deal was found by Cheapflights users on 11/30. 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 12/510:20 pmLAS - ISP
1 stop7h 53mFrontier
Tue 12/98:29 pmISP - LAS
1 stop16h 54mFrontier
Deal found 11/30$268
This CheapOair deal was found by Cheapflights users on 11/29. 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 12/183:54 pmLAS - ISP
1 stop24h 46mFrontier
Mon 12/228:35 pmISP - LAS
1 stop16h 08mFrontier
Deal found 11/29$279

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 December 1, 2025.
Use the filters below to find and compare flights from Las Vegas to Islip that are best for you.

Fly from

Las Vegas

Fly to

Islip

Route

Depart

Return

Price

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Sun 1/11

10:45 pm-7:51 pm

1 stop18h 06m

Islip Long Island

Thu 1/15

7:58 pm-10:10 am

1 stop17h 12m

$218

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 3/5

10:45 pm-7:11 pm

1 stop17h 26m

Islip Long Island

Sun 3/8

8:19 pm-9:43 am

1 stop16h 24m

$218

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 12/15

10:20 pm-7:34 pm

1 stop18h 14m

Islip Long Island

Fri 12/19

8:35 pm-8:25 am

1 stop14h 50m

$228

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 12/17

10:20 pm-11:25 am

1 stop10h 05m

Islip Long Island

Sun 12/21

8:35 pm-9:15 am

1 stop15h 40m

$228

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 12/11

10:20 pm-7:34 pm

1 stop18h 14m

Islip Long Island

Thu 12/18

12:20 pm-9:19 am

1 stop23h 59m

$229

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 12/11

10:20 pm-7:34 pm

1 stop18h 14m

Islip Long Island

Sun 12/14

11:15 am-9:43 am

1 stop25h 28m

$229

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 2/26

10:45 pm-10:40 am

1 stop8h 55m

Islip Long Island

Sun 3/1

5:03 pm-9:43 am

1 stop19h 40m

$238

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 2/27

10:45 pm-10:40 am

1 stop8h 55m

Islip Long Island

Sun 3/8

8:19 pm-9:43 am

1 stop16h 24m

$253

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Sat 12/13

10:20 pm-10:20 am

1 stop9h 00m

Islip Long Island

Sat 12/20

6:40 pm-9:38 am

1 stop17h 58m

$253

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 12/18

3:54 pm-7:40 pm

1 stop24h 46m

Islip Long Island

Sun 12/21

8:35 pm-9:15 am

1 stop15h 40m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 18 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Las Vegas-Islip, New York flight deals on Cheapflights vs. eDreams >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 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 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, October is the cheapest month in which you can book a flight from Las Vegas to Islip, New York (average of $61). Flying from Las Vegas to Islip, New York in July is currently the most expensive (average of $129). 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 December 1, 2025.
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.
Southwest
8.0
Very good
4,253 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.
Southwest
8.0
Very good
4,253 reviews
Southwest
8.0
Very good
4,253 reviews

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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 18h 06m. 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 29% 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, October is the cheapest month in which you can book a flight from Las Vegas to Islip, New York (average of $61). Flying from Las Vegas to Islip, New York in July is currently the most expensive (average of $129). 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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Alternative routes for Las Vegas to Islip

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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 December 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$487FlexibilityNo cancel feeOn-time63%

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