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Islip

$90+ Cheap flights from Las Vegas to Islip (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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(CheapOair)

One-way from

$90
(CheapOair)

Popular in

December

Cheapest in

March

Average price

$554
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. 23% potential increase in price ($149 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 October 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 October 16, 2025.

This CheapOair deal was found by Cheapflights users on 10/16. 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 11/1311:02 pmLAS - ISP
1 stop8h 35mFrontier
Thu 11/2010:02 amISP - LAS
1 stop30h 43mFrontier
Deal found 10/16$170
This CheapOair deal was found by Cheapflights users on 10/16. 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 11/1311:02 pmLAS - ISP
1 stop8h 35mFrontier
Mon 11/174:58 pmISP - LAS
1 stop20h 09mFrontier
Deal found 10/16$210
This JetBlue deal was found by Cheapflights users on 10/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:10 pmLAS - ISP
1 stop8h 45mJetBlue
Sat 11/81:50 pmISP - LAS
1 stop9h 57mJetBlue
Deal found 10/14$291
This CheapOair deal was found by Cheapflights users on 10/16. 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 10/2310:16 pmLAS - ISP
1 stop9h 21mFrontier
Mon 10/274:58 pmISP - LAS
1 stop20h 09mFrontier
Deal found 10/16$302
This CheapOair deal was found by Cheapflights users on 10/15. 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 12/810:20 pmLAS - ISP
1 stop18h 14mFrontier
Fri 12/198:35 pmISP - LAS
1 stop20h 55mFrontier
Deal found 10/15$321
This CheapOair deal was found by Cheapflights users on 10/16. 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 11/1311:02 pmLAS - ISP
1 stop8h 35mFrontier
Sun 11/169:27 pmISP - LAS
1 stop15h 40mFrontier
Deal found 10/16$326
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:00 amLAS - ISP
1 stop23h 07mFrontier
Tue 12/28:29 pmISP - LAS
1 stop16h 54mFrontier
Deal found 10/15$328
This Frontier deal was found by Cheapflights users on 10/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:16 pmLAS - ISP
1 stop9h 21mFrontier
Sun 10/269:47 pmISP - LAS
1 stop14h 48mFrontier
Deal found 10/14$335
This CheapOair deal was found by Cheapflights users on 10/16. 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 11/257:00 amLAS - ISP
1 stop24h 18mFrontier
Tue 12/28:29 pmISP - LAS
1 stop16h 54mFrontier
Deal found 10/16$336
This CheapOair deal was found by Cheapflights users on 10/15. 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.
Thu 11/611:02 pmLAS - ISP
1 stop11h 50mFrontier
Sat 11/84:58 pmISP - LAS
1 stop20h 09mFrontier
Deal found 10/15$339

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 October 16, 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

Thu 11/13

11:02 pm-10:37 am

1 stop8h 35m

Islip Long Island

Thu 11/20

10:02 am-1:45 pm

1 stop30h 43m

$170

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 11/13

11:02 pm-10:37 am

1 stop8h 35m

Islip Long Island

Mon 11/17

4:58 pm-10:07 am

1 stop20h 09m

$210

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 11/14

11:02 pm-10:37 am

1 stop8h 35m

Islip Long Island

Mon 11/17

4:58 pm-10:07 am

1 stop20h 09m

$251

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 11/4

10:10 pm-9:55 am

1 stop8h 45m

Islip Long Island

Sat 11/8

1:50 pm-8:47 pm

1 stop9h 57m

$291

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 11/13

11:02 pm-10:37 am

1 stop8h 35m

Islip Long Island

Sun 11/16

9:27 pm-10:07 am

1 stop15h 40m

$326

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 11/26

7:00 am-9:07 am

1 stop23h 07m

Islip Long Island

Tue 12/2

8:29 pm-10:23 am

1 stop16h 54m

$328

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 11/25

7:00 am-10:18 am

1 stop24h 18m

Islip Long Island

Tue 12/2

8:29 pm-10:23 am

1 stop16h 54m

$336

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 12/18

3:54 pm-1:09 pm

1 stop18h 15m

Islip Long Island

Mon 12/22

8:35 pm-9:43 am

1 stop16h 08m

$336

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 11/6

11:02 pm-1:52 pm

1 stop11h 50m

Islip Long Island

Sat 11/8

4:58 pm-10:07 am

1 stop20h 09m

$339

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 11/18

11:02 pm-10:37 am

1 stop8h 35m

$90

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 18 results
1
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Las Vegas-Islip flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Las Vegas-Islip 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 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?

Currently, October is the cheapest month in which you can book a flight from Las Vegas to Islip (average of $70). Flying from Las Vegas to Islip 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.

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

Find hourly flight availability from Las Vegas to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from Las Vegas to Islip in the afternoon. By choosing this option you can save up to 61% on the cost of your flight, compared to a flight in the morning.

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 October 16, 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
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

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 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?

    Frontier can get you from Las Vegas to Islip in just under 8h 35m. Your travel time can differ by up to . The distance between Las Vegas and Islip is about 2275 mi.

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

    According to our current data, Southwest ($356), offers the cheapest pricing from Las Vegas to Islip. Southwest is 28% cheaper than the average price of flights available within the next 90 days 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?

    Currently, October is the cheapest month in which you can book a flight from Las Vegas to Islip (average of $70). Flying from Las Vegas to Islip 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
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Alternative routes for Las Vegas to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$484FlexibilityNo cancel feeOn-time63%

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