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$138+ Cheap flights from Islip, NY to Las Vegas (ISP - LAS)

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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAS
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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1. Tell us where you want to go
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Cheap flight deals from Islip to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Las Vegas (LAS). 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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(JetBlue)

One-way from

$138
(JetBlue)

Popular in

July

Cheapest in

October

Average price

$477
Provider with most accurate pricing for Islip Long Island-Las Vegas Harry Reid Intl flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Las Vegas Harry Reid Intl flights.
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From Islip Long Island to Las Vegas Harry Reid Intl
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One-way flight from Islip Long Island to Las Vegas Harry Reid Intl
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Highest demand for flights based on searches. 4% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Islip to Las Vegas

Cheapest flights from Islip to Las Vegas
Explore the most affordable flight options available from Islip to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

This JetBlue deal was found by Cheapflights users on 3/24. 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.
Thu 6/56:00 amISP - LAS
1 stop11h 09mJetBlue
Sun 6/810:10 amLAS - ISP
1 stop7h 58mJetBlue
Deal found 3/24$255
This Frontier deal was found by Cheapflights users on 3/25. 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 4/29:00 amISP - LAS
1 stop15h 32mFrontier
Fri 4/411:49 pmLAS - ISP
1 stop11h 39mFrontier
Deal found 3/25$298
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/266:10 pmISP - LAS
1 stop8h 35mSouthwest
Wed 5/285:45 amLAS - ISP
2 stops11h 35mSouthwest
Deal found 3/24$400
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/53:18 pmISP - LAS
1 stop10h 25mMultiple Airlines
Tue 4/812:21 pmLAS - ISP
2 stops22h 34mMultiple Airlines
Deal found 3/24$550
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:39 pmISP - LAS
3 stops18h 37mBreeze Airways
Fri 8/2212:01 pmLAS - ISP
2 stops22h 31mBreeze Airways
Deal found 3/24$838

Cheapflights Fare Finder

Customize your flight search to find flights from Islip to Las Vegas 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 March 26, 2025.
Use the filters below to find and compare flights from Islip to Las Vegas that are best for you.

Fly from

Islip

Fly to

Las Vegas

Route

Depart

Return

Price

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Thu 6/5

6:00 am-2:09 pm

1 stop11h 09m

Las Vegas Harry Reid Intl

Sun 6/8

10:10 am-9:08 pm

1 stop7h 58m

$255

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 4/5

3:18 pm-10:43 pm

1 stop10h 25m

Las Vegas Harry Reid Intl

Fri 4/11

11:49 pm-2:28 pm

1 stop11h 39m

$298

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 5/26

6:10 pm-11:45 pm

1 stop8h 35m

Las Vegas Harry Reid Intl

Wed 5/28

5:45 am-8:20 pm

2 stops11h 35m

$400

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 4/5

3:18 pm-10:43 pm

1 stop10h 25m

Las Vegas Harry Reid Intl

Tue 4/8

12:21 pm-1:55 pm

2 stops22h 34m

$550

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sun 8/17

7:39 pm-11:16 am

3 stops18h 37m

Las Vegas Harry Reid Intl

Fri 8/22

12:01 pm-1:32 pm

2 stops22h 31m

$838

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 5/26

6:00 am-10:38 am

1 stop7h 38m

$138

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Sat 4/5

3:18 pm-10:43 pm

1 stop10h 25m

$149

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 4/14

6:10 pm-11:45 pm

1 stop8h 35m

$201

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 4/14

8:25 pm-11:04 pm

3 stops29h 39m

$310

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 6/16

10:44 am-11:18 am

1 stop27h 34m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Islip to Las Vegas

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 Islip to Las Vegas in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Islip, New York-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Las Vegas 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 Islip, New York-Las Vegas 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 Islip to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Islip 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 Islip to Las Vegas

What is the cheapest month to book a flight from Islip, New York to Las Vegas?

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Las Vegas (average of $198). Flying from Islip, New York to Las Vegas in March is currently the most expensive (average of $269). 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 ISP to LAS?

Find hourly flight availability from Islip to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 26, 2025.

When flying from Islip, New York to Las Vegas, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 15% versus a flight in the morning.

What is the cheapest day to fly from Islip, New York to Las Vegas?

Use this chart to determine the cheapest time to fly round-trip from Islip to Las Vegas. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Islip, New York to Las Vegas flight should consider departing on Thursday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Las Vegas ranges from 0.1 - 0.8 inches per month. February is typically the wettest month, when rainfall can reach 0.8 in. May is typically the driest time to visit Las Vegas when rainfall is around 0.1 in.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. 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 Las Vegas. Reviews last updated March 26, 2025.
See what other customers who have flown with Southwest, Breeze Airways and JetBlue from Islip to Las Vegas have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.6

Food

7.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.6

Food

7.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Breeze Airways
8.0
Very good
156 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.6

Food

7.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,922 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.6

Food

7.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
6.0
Okay
3,272 reviews
Southwest
8.1
Very good
4,273 reviews

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Crew

8.6

Food

7.1

Overall

8.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Islip to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Islip, New York to Las Vegas round-trip?

    Flying on JetBlue is currently your cheapest option to Las Vegas, with prices starting at $255. Additional round-trip tickets that might be worth considering are offered by Frontier and Southwest, with the lowest prices starting at $298 and $400, respectively. These flights start at 44% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Islip, New York to Las Vegas one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $138. However, be on the lookout for offers from Frontier and Southwest, as they are both options that can get you from Islip, New York to Las Vegas for a low price.

  • Can I find deals for flights from Islip to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Islip to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Las Vegas.

  • Can I find deals for business class flights from Islip to Las Vegas?

    Yes. Cheapflights offers flight deals from Islip to Las Vegas 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 Islip, New York to Las Vegas?

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Las Vegas (average of $198). Flying from Islip, New York to Las Vegas in March is currently the most expensive (average of $269). 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
Henderson
Paradise
North Las Vegas
Sunrise Manor
Winchester
Kingman
Primm
Mesquite
Needles
Mount Charleston
Pahrump
Boulder City

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Top 2 airlines flying from Islip to Las Vegas

Discover the top 2 airlines that operate flights from Islip to Las Vegas. 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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$176Average$268FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$388Average$482FlexibilityNo cancel feeOn-time63%
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