ISP - LAS

$124 Find Cheap Flights from Islip to Las Vegas - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Las Vegas departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$250
Typical prices: $341-$569
Frontier
Mon 8/31Wed 9/2
ISP - LAS • 1 stop
Cheapest one-way
$124
Frontier
Thu 8/27
ISP - LAS • 1 stop
Top airlines
Cheapest • from $250 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Islip and Las Vegas. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $268 (round-trip)
Shortest trip • 8h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 48% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Las Vegas!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to Las Vegas (ISP-LAS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Las Vegas that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to Las Vegas

Mon, Aug 31 - Wed, Sep 2
Frontier Logo
10:57 am - 9:44 pm
ISP
-
LAS
13h 47m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$250Frontier
Sat, Aug 29 - Tue, Sep 1
Frontier Logo
10:57 am - 9:44 pm
ISP
-
LAS
13h 47m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$250Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
7:09 pm - 9:44 pm
ISP
-
LAS
29h 35m
1 stop
Frontier Logo
9:41 pm - 9:53 am
LAS
-
ISP
9h 12m
1 stop
$260Frontier
Tue, Sep 15 - Fri, Sep 25
Frontier Logo
5:43 pm - 8:07 am
ISP
-
LAS
17h 24m
1 stop
Frontier Logo
10:15 pm - 4:58 pm
LAS
-
ISP
15h 43m
1 stop
$277Frontier
Tue, Sep 1 - Tue, Sep 1
Southwest Logo
3:20 pm - 8:00 pm
ISP
-
LAS
7h 40m
1 stop
Southwest Logo
11:00 pm - 10:15 am
LAS
-
ISP
8h 15m
1 stop
$335Southwest
Thu, Nov 19 - Mon, Nov 23
JetBlue Logo
12:00 pm - 10:10 pm
ISP
-
LAS
13h 10m
1 stop
JetBlue Logo
10:20 pm - 11:10 am
LAS
-
ISP
9h 50m
1 stop
$337JetBlue
Tue, Sep 1 - Tue, Sep 1
Southwest Logo
10:30 am - 8:00 pm
ISP
-
LAS
12h 30m
2 stops
Southwest Logo
11:00 pm - 10:15 am
LAS
-
ISP
8h 15m
1 stop
$340Southwest
Tue, Aug 25 - Tue, Sep 8
JetBlue Logo
4:58 pm - 10:49 pm
ISP
-
LAS
8h 51m
1 stop
JetBlue Logo
7:00 am - 7:33 pm
LAS
-
ISP
9h 33m
1 stop
$342JetBlue
Tue, Sep 1 - Tue, Sep 8
JetBlue Logo
4:58 pm - 10:49 pm
ISP
-
LAS
8h 51m
1 stop
JetBlue Logo
7:00 am - 7:33 pm
LAS
-
ISP
9h 33m
1 stop
$345JetBlue
Tue, Sep 1 - Tue, Sep 1
Southwest Logo
10:30 am - 8:00 pm
ISP
-
LAS
12h 30m
2 stops
Southwest Logo
10:50 pm - 4:55 pm
LAS
-
ISP
15h 05m
2 stops
$351Southwest
Booking Insights

KAYAK's insights & trends for Islip to Las Vegas flights

Get data-powered insights and trends into flights from Islip to Las Vegas to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Islip, New York to Las Vegas?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Islip, New York to Las Vegas departing in August.

Flight prices are below average for this route right now.

Flights to Las Vegas from Islip, New York usually cost between $277 and $612 in August.
The lowest price found in the past 5 days was $250 on Frontier (Aug 29-Sep 1).

What is the cheapest month to fly from Islip to Las Vegas?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to Las Vegas, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Islip to Las Vegas is August, where tickets cost $289 (return) on average. On the other hand, the most expensive months are November and October, where the average cost of round-trip tickets is $1,076 and $821 respectively.

Good to know

Low season

March

Cheapest flight

$124
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Islip to Las Vegas

When to book flights from Islip to Las Vegas

Are your dates flexible? Find out the best times to travel from Islip to Las Vegas based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to Las Vegas

  • What is the cheapest flight from Islip to Las Vegas?

    In the last 5 days, the lowest price for a flight from Islip to Las Vegas was $124 for a one-way ticket and $250 for a round-trip.

  • Do I need a passport to fly between Islip and Las Vegas?

    No

  • Which airports will I be using when flying from Islip to Las Vegas?

    When flying out of Islip you will be using Islip Long Island. You will be landing at Las Vegas, also known as Las Vegas Harry Reid Intl.

  • Which aircraft models fly most regularly from Islip to Las Vegas?

    We unfortunately don’t have that data for this specific route.

  • Which is the best airline for flights from Islip to Las Vegas, Southwest or JetBlue?

    The two airlines most popular with KAYAK users for flights from Islip to Las Vegas are Southwest and JetBlue. With an average price for the route of $587 and an overall rating of 8.0, Southwest is the most popular choice. JetBlue is also a great choice for the route, with an average price of $370 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Islip to Las Vegas?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to Las Vegas.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to Las Vegas?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Las Vegas from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to Las Vegas?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Las Vegas with an airline and back to Islip with another airline. Booking your flights between Islip and LAS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to Las Vegas?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Las Vegas from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Islip to Las Vegas

 
See real verified KAYAK customer reviews for airlines flying from Islip to Las Vegas. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Islip to Las Vegas? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4230 reviews
8.1Boarding
8.6Crew
7.0Food
7.5Entertainment
8.0Comfort
Airline reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

4.0 OkaySteven, Jun 2026
ONT - LAS
Read more Southwest reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

Was fine, delayed and feels like southwest is always late

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Couldn't connect to the internet and movies. Needed help.

A more comfortable seat. Padding would be really helpful but I've read the airlines don't want customers to be satisfied with economy seats.

Everything was good except checking bags . I had paid for two bags but it didn’t show so we had to do it again while people waited and we were struggling to get to our flight

Plane was delayed multiple times. I would like to request a refund. Was due to arrive Thursday evening ended up arriving Friday morning.

The security line at JFK was one of the longest I’ve ever experienced - probably 45 minutes. I don’t know if JetBlue has control over it, but it detracted from the overall experience. Entertainment had good options, but the volume control was a bit small to tap on and the screen had a fair amount of interference blips. Clearer picture would have been better.

I liked the entertainment on JetBlue, the service from JFK to JAX was terrible at best

I usually dont fly JeTBlue and I dont think I will ever do it again. The flight was delayed fee time, nobody was giving us any info at at the airport, gate changing, the slowest and poorly organized boarding ever, rude staff.. huh

JetBlue not only has the most comfortable planes, but also used to have the best customer service. Lorie Wright, the lady at the gate was very rude not only to me, but to other passengers as well. Her colleague, the gentleman was also not very friendly. They both were acting like they were doing passengers a favor. The crew on board was very nice.

Onboard functioning wide-variety entertainment on a budget and having an open pantry is nice. Seats are not comfortable but go provide plenty of legroom for a 6'2" 260lbs man.

Because of weather and mechanical issues our flight was 4 hours late. The only compensation offered to us was a meal voucher to be used only at Boston Airport and only on the day issued. But by the time it was offered to us all the restaurants were closed, so there was no way to use that offer.

You get what you pay for with JetBlue. Every little thing costs more, you are nickel and dimed until the end. Entertainment doesn’t function. Flight attendants do the bare minimum.

Everything you need to know for your flight from Islip to Las Vegas

Information on your arrival and departure airports