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Islip

$90+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
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 January 15, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$245
(Frontier)

One-way from

$90
(Trip.com)

Popular in

June

Cheapest in

March

Average price

$586
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. 4% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 15, 2026.

This Frontier deal was found by Cheapflights users on 1/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2511:59 pm
LAS
-
ISP
1 stop13h 14m
Frontier
Mon 3/301:22 pm
ISP
-
LAS
1 stop12h 27m
Frontier
Deal found 1/15$245
This CheapOair deal was found by Cheapflights users on 1/13. 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 3/211:03 pm
LAS
-
ISP
1 stop30h 37m
Frontier
Sun 3/154:34 pm
ISP
-
LAS
1 stop9h 15m
Frontier
Deal found 1/13$261
This CheapOair deal was found by Cheapflights users on 1/15. 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.
Wed 4/111:59 pm
LAS
-
ISP
1 stop16h 52m
Frontier
Sun 4/58:36 pm
ISP
-
LAS
1 stop29h 00m
Frontier
Deal found 1/15$276
This CheapOair deal was found by Cheapflights users on 1/14. 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 3/511:59 pm
LAS
-
ISP
1 stop9h 48m
Frontier
Sun 3/85:08 pm
ISP
-
LAS
1 stop21h 22m
Frontier
Deal found 1/14$280
This CheapOair deal was found by Cheapflights users on 1/14. 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 2/2511:03 pm
LAS
-
ISP
1 stop29h 35m
Frontier
Sat 2/288:23 pm
ISP
-
LAS
1 stop16h 52m
Frontier
Deal found 1/14$283
This CheapOair deal was found by Cheapflights users on 1/14. 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.
Fri 4/311:59 pm
LAS
-
ISP
1 stop15h 40m
Frontier
Sun 4/125:45 am
ISP
-
LAS
1 stop19h 51m
Frontier
Deal found 1/14$296
This CheapOair deal was found by Cheapflights users on 1/14. 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 4/211:59 pm
LAS
-
ISP
1 stop14h 56m
Frontier
Sun 4/58:36 pm
ISP
-
LAS
1 stop29h 00m
Frontier
Deal found 1/14$311
This CheapOair deal was found by Cheapflights users on 1/14. 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 2/2611:03 pm
LAS
-
ISP
1 stop12h 36m
Frontier
Sun 3/18:33 am
ISP
-
LAS
1 stop28h 57m
Frontier
Deal found 1/14$372
This CheapOair deal was found by Cheapflights users on 1/14. 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 2/1811:03 pm
LAS
-
ISP
1 stop29h 35m
Frontier
Mon 2/238:23 am
ISP
-
LAS
1 stop28h 52m
Frontier
Deal found 1/14$432
This JetBlue deal was found by Cheapflights users on 1/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:30 pm
LAS
-
ISP
1 stop8h 17m
JetBlue
Mon 3/21:27 pm
ISP
-
LAS
1 stop12h 22m
JetBlue
Deal found 1/15$491
This JetBlue deal was found by Cheapflights users on 1/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:30 pm
LAS
-
ISP
1 stop8h 17m
JetBlue
Sat 2/281:27 pm
ISP
-
LAS
1 stop10h 17m
JetBlue
Deal found 1/15$501

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 January 15, 2026.
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

Wed 3/25

11:59 pm-4:13 pm

1 stop13h 14m

Islip Long Island

Mon 3/30

1:22 pm-10:49 pm

1 stop12h 27m

$245

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Mon 3/2

11:03 pm-8:40 am

1 stop30h 37m

Islip Long Island

Sun 3/15

4:34 pm-10:49 pm

1 stop9h 15m

$261

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 4/1

11:59 pm-7:51 pm

1 stop16h 52m

Islip Long Island

Sun 4/5

8:36 pm-10:36 pm

1 stop29h 00m

$276

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 3/5

11:59 pm-12:47 pm

1 stop9h 48m

Islip Long Island

Sun 3/8

5:08 pm-11:30 am

1 stop21h 22m

$280

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 2/25

11:03 pm-7:38 am

1 stop29h 35m

Islip Long Island

Sat 2/28

8:23 pm-10:15 am

1 stop16h 52m

$283

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 4/3

11:59 pm-6:39 pm

1 stop15h 40m

Islip Long Island

Sun 4/12

5:45 am-10:36 pm

1 stop19h 51m

$296

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 4/2

11:59 pm-5:55 pm

1 stop14h 56m

Islip Long Island

Sun 4/5

8:36 pm-10:36 pm

1 stop29h 00m

$311

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 2/26

11:03 pm-2:39 pm

1 stop12h 36m

Islip Long Island

Sun 3/1

8:33 am-10:30 am

1 stop28h 57m

$372

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 2/18

11:03 pm-7:38 am

1 stop29h 35m

Islip Long Island

Mon 2/23

8:23 am-10:15 am

1 stop28h 52m

$432

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 2/27

9:30 pm-8:47 am

1 stop8h 17m

Islip Long Island

Mon 3/2

1:27 pm-10:49 pm

1 stop12h 22m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 20 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 January.
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 $47). Flying from Las Vegas to Islip, New York in July is currently the most expensive (average of $130). 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 January 15, 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.
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

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
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Overall

8.0

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 13h 14m. 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 24% 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 $47). Flying from Las Vegas to Islip, New York in July is currently the most expensive (average of $130). 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$468FlexibilityNo cancel feeOn-time63%

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