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Islip

$146+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ISP
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$181
(CheapOair)

One-way from

$146
(JetBlue)

Popular in

December

Cheapest in

March

Average price

$450
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. 30% potential increase in price ($214 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This CheapOair deal was found by Cheapflights users on 9/13. 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.
Thu 10/211:04 pmLAS - ISP
1 stop8h 36mFrontier
Sat 10/114:58 pmISP - LAS
1 stop19h 29mFrontier
Deal found 9/13$181
This Frontier deal was found by Cheapflights users on 9/15. 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.
Fri 10/1710:16 pmLAS - ISP
1 stop9h 21mFrontier
Sun 10/199:47 pmISP - LAS
1 stop14h 48mFrontier
Deal found 9/15$191
This Frontier deal was found by Cheapflights users on 9/15. 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.
Tue 9/3011:04 pmLAS - ISP
1 stop8h 36mFrontier
Sat 10/45:05 pmISP - LAS
2 stops17h 57mFrontier
Deal found 9/15$218
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Tue 10/2110:16 pmLAS - ISP
1 stop9h 41mFrontier
Tue 10/286:27 pmISP - LAS
1 stop18h 40mFrontier
Deal found 9/14$227
This CheapOair deal was found by Cheapflights users on 9/13. 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 10/1310:16 pmLAS - ISP
1 stop19h 26mFrontier
Sun 10/199:47 pmISP - LAS
1 stop30h 07mFrontier
Deal found 9/13$258
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Sat 10/1810:16 pmLAS - ISP
1 stop19h 36mFrontier
Mon 10/204:58 pmISP - LAS
1 stop10h 56mFrontier
Deal found 9/14$268
This CheapOair deal was found by Cheapflights users on 9/14. 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 11/611:02 pmLAS - ISP
1 stop11h 50mFrontier
Sat 11/154:58 pmISP - LAS
1 stop20h 09mFrontier
Deal found 9/14$269
This CheapOair deal was found by Cheapflights users on 9/14. 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 11/1411:02 pmLAS - ISP
1 stop8h 35mFrontier
Sun 11/169:27 pmISP - LAS
1 stop15h 40mFrontier
Deal found 9/14$272
This Frontier deal was found by Cheapflights users on 9/14. 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.
Tue 9/1611:04 pmLAS - ISP
1 stop8h 36mFrontier
Mon 10/65:05 pmISP - LAS
2 stops17h 57mFrontier
Deal found 9/14$288
This CheapOair deal was found by Cheapflights users on 9/14. 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.
Tue 11/1111:02 pmLAS - ISP
1 stop8h 35mFrontier
Sat 11/154:58 pmISP - LAS
1 stop20h 09mFrontier
Deal found 9/14$303
This CheapOair deal was found by Cheapflights users on 9/13. 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.
Fri 10/311:04 pmLAS - ISP
1 stop8h 51mFrontier
Wed 10/84:58 pmISP - LAS
1 stop19h 29mFrontier
Deal found 9/13$305

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 September 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

Tue 9/30

11:04 pm-10:40 am

1 stop8h 36m

Islip Long Island

Sat 10/4

5:05 pm-9:10 am

1 stop19h 05m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 10/2

11:04 pm-10:40 am

1 stop8h 36m

Islip Long Island

Sat 10/11

4:58 pm-9:27 am

1 stop19h 29m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 10/15

10:16 pm-8:42 pm

1 stop19h 26m

Islip Long Island

Mon 10/20

4:58 pm-12:54 am

1 stop10h 56m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 10/24

10:16 pm-10:37 am

1 stop9h 21m

Islip Long Island

Mon 10/27

4:58 pm-10:07 am

1 stop20h 09m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 11/6

11:02 pm-10:37 am

1 stop8h 35m

Islip Long Island

Sun 11/9

9:27 pm-10:07 am

1 stop15h 40m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 10/1

11:04 pm-10:55 am

1 stop8h 51m

Islip Long Island

Tue 10/14

9:37 pm-9:27 am

1 stop14h 50m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Wed 10/15

10:16 pm-8:42 pm

1 stop19h 26m

Islip Long Island

Sun 10/19

9:47 pm-12:54 am

1 stop30h 07m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Fri 10/17

10:16 pm-10:37 am

1 stop9h 21m

Islip Long Island

Sun 10/19

9:47 pm-9:35 am

1 stop14h 48m

$191

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Tue 10/21

10:16 pm-10:57 am

1 stop9h 41m

Islip Long Island

Tue 10/28

6:27 pm-10:07 am

1 stop18h 40m

$227

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 10/30

10:10 pm-11:38 am

1 stop10h 28m

$146

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 18 results
1
2

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, January is the cheapest month in which you can book a flight from Las Vegas to Islip (average of $108). Flying from Las Vegas to Islip in November is currently the most expensive (average of $213). 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 September 15, 2025.

It’s optimal to fly from Las Vegas to Islip at noon. By choosing this option you can save up to 47% 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 September 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
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

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 36m. 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 26% 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, January is the cheapest month in which you can book a flight from Las Vegas to Islip (average of $108). Flying from Las Vegas to Islip in November is currently the most expensive (average of $213). 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
Southampton

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$356Average$484FlexibilityNo cancel feeOn-time63%

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