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Islip

$81+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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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 December 15, 2025.

This CheapOair deal was found by Cheapflights users on 12/13. 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 12/3110:20 pmLAS - ISP
1 stop10h 05mFrontier
Mon 1/58:24 pmISP - LAS
1 stop16h 19mFrontier
Deal found 12/13$258
This CheapOair deal was found by Cheapflights users on 12/15. 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 12/3010:20 pmLAS - ISP
1 stop15h 17mFrontier
Tue 1/612:55 pmISP - LAS
1 stop23h 48mFrontier
Deal found 12/15$279
This CheapOair deal was found by Cheapflights users on 12/14. 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
Sat 12/206:40 pmISP - LAS
1 stop17h 58mFrontier
Deal found 12/14$305
This CheapOair deal was found by Cheapflights users on 12/14. 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.
Sun 12/2810:20 pmLAS - ISP
1 stop11h 49mFrontier
Mon 1/58:24 pmISP - LAS
1 stop16h 19mFrontier
Deal found 12/14$313
This CheapOair deal was found by Cheapflights users on 12/14. 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 stop17h 48mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 12/14$354
This CheapOair deal was found by Cheapflights users on 12/15. 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 12/1510:20 pmLAS - ISP
1 stop18h 14mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 12/15$413
This CheapOair deal was found by Cheapflights users on 12/13. 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 12/1510:20 pmLAS - ISP
1 stop18h 14mFrontier
Fri 12/191:27 pmISP - LAS
1 stop21h 58mFrontier
Deal found 12/13$414
This CheapOair deal was found by Cheapflights users on 12/14. 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
Fri 12/198:35 pmISP - LAS
1 stop14h 50mFrontier
Deal found 12/14$434
This CheapOair deal was found by Cheapflights users on 12/15. 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 12/1910:05 pmLAS - ISP
1 stop16h 50mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 12/15$443
This CheapOair deal was found by Cheapflights users on 12/13. 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.
Sun 12/1410:20 pmLAS - ISP
1 stop7h 53mFrontier
Sun 12/218:35 pmISP - LAS
1 stop15h 40mFrontier
Deal found 12/13$463

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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$202
(CheapOair)

One-way from

$81
(CheapOair)

Popular in

June

Cheapest in

March

Average price

$337
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Islip Long Island flights.
Search Deals
From Las Vegas Harry Reid Intl to Islip Long Island
Search Deals
One-way flight from Las Vegas Harry Reid Intl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 15, 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

Sat 1/10

9:32 pm-7:45 pm

1 stop19h 13m

Islip Long Island

Sat 1/17

8:00 am-10:10 am

1 stop29h 10m

$202

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 1/13

10:33 pm-10:46 pm

1 stop21h 13m

Islip Long Island

Sat 1/17

8:00 am-10:10 am

1 stop29h 10m

$202

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

9:52 am-10:10 am

1 stop27h 18m

$239

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 1/12

10:45 pm-10:46 pm

1 stop21h 01m

Islip Long Island

Fri 1/16

8:54 pm-11:42 am

1 stop17h 48m

$252

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 1/9

10:45 pm-7:08 pm

1 stop17h 23m

Islip Long Island

Sun 1/11

8:40 pm-10:08 am

1 stop16h 28m

$253

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 2/12

11:03 pm-2:39 pm

1 stop12h 36m

Islip Long Island

Thu 3/12

5:08 pm-11:55 am

1 stop21h 47m

$254

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 12/31

10:20 pm-11:25 am

1 stop10h 05m

Islip Long Island

Mon 1/5

8:24 pm-9:43 am

1 stop16h 19m

$258

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 12/30

10:20 pm-4:37 pm

1 stop15h 17m

Islip Long Island

Tue 1/6

12:55 pm-9:43 am

1 stop23h 48m

$279

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 1/15

11:03 pm-8:09 pm

1 stop18h 06m

Islip Long Island

Sun 1/18

9:52 am-10:10 am

1 stop27h 18m

$289

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Sun 12/28

10:20 pm-1:09 pm

1 stop11h 49m

Islip Long Island

Mon 1/5

8:24 pm-9:43 am

1 stop16h 19m

$313

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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, January is the cheapest month in which you can book a flight from Las Vegas to Islip, New York (average of $56). 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 15, 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
7.9
Good
4,250 reviews

Crew

8.6

Boarding

8.1

Overall

7.9

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Boarding

8.1

Overall

7.9

Entertainment

7.5

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 19h 13m. 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 22% 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 $56). 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$484FlexibilityNo cancel feeOn-time63%

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