ISP - LAS

$150 Find Cheap Flights from Islip to Las Vegas

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 8/19. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Las Vegas

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Las Vegas, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to Las Vegas, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$347
Typical prices: $598-$328
Southwest
Tue 7/28Tue 8/4
ISP - LAS • 1 stop
Cheapest one-way
$150
Southwest
Wed 8/19
ISP - LAS • 1 stop
Top airlines
Cheapest • from $335 (round-trip)
Best reviews • 7.9 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 $329 (round-trip)
Shortest trip • 8h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 32% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Jul 28 - Tue, Aug 4
Southwest Logo
6:00 am - 12:35 pm
ISP
-
LAS
9h 35m
1 stop
Southwest Logo
11:00 pm - 10:15 am
LAS
-
ISP
8h 15m
1 stop
$347Southwest
Tue, Sep 8 - Wed, Sep 16
Frontier Logo
4:41 pm - 9:26 am
ISP
-
LAS
19h 45m
1 stop
Frontier Logo
10:12 pm - 9:33 am
LAS
-
ISP
8h 21m
1 stop
$350Frontier
Tue, Jul 28 - Tue, Aug 4
Southwest Logo
6:00 am - 12:35 pm
ISP
-
LAS
9h 35m
1 stop
Southwest Logo
8:00 am - 9:05 pm
LAS
-
ISP
10h 05m
2 stops
$352Southwest
Thu, Aug 27 - Tue, Sep 1
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
$370Frontier
Mon, Aug 24 - Wed, Aug 26
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
$390Frontier
Mon, Jul 27 - Wed, Aug 5
Southwest Logo
5:50 pm - 11:35 pm
ISP
-
LAS
8h 45m
1 stop
Southwest Logo
8:55 am - 9:05 pm
LAS
-
ISP
9h 10m
1 stop
$401Southwest
Tue, Jul 7 - Tue, Aug 4
JetBlue Logo
4:58 pm - 10:46 pm
ISP
-
LAS
8h 48m
1 stop
JetBlue Logo
7:00 am - 9:44 pm
LAS
-
ISP
11h 44m
1 stop
$404JetBlue
Thu, Aug 27 - Sun, Aug 30
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
Frontier Logo
10:12 pm - 10:03 am
LAS
-
ISP
8h 51m
1 stop
$410Frontier
Tue, Jul 28 - Tue, Aug 4
Southwest Logo
4:40 pm - 8:45 pm
ISP
-
LAS
7h 05m
1 stop
Southwest Logo
11:00 pm - 10:15 am
LAS
-
ISP
8h 15m
1 stop
$413Southwest
Tue, Jul 28 - Tue, Aug 4
Southwest Logo
12:25 pm - 5:45 pm
ISP
-
LAS
8h 20m
1 stop
Southwest Logo
8:00 am - 9:05 pm
LAS
-
ISP
10h 05m
2 stops
$418Southwest
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 July.

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 January, where tickets cost $362 (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 $600 respectively.

Good to know

Low seasonMarch
Cheapest flight$150
Best time to beat the crowds with an average 26% drop in price.
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 $150 for a one-way ticket and $335 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 $559 and an overall rating of 7.9, 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.
7.9
SouthwestOverall score based on 4238 reviews
8.1Boarding
8.6Crew
7.0Food
7.5Entertainment
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

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!

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

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.

First the flt was delayed over 2 hrs bc of plane mechanics that should have been handled better! No text or email was sent so only found out at the airport so there we sat for 5 hours! THATS RIDICULOUS! The gate area was filthy! No agents showed up till hr before so no additional info was given-waited online for 15 mins while the gate agent chatted and got together then given last seat in back of plane!! No priority for senior or anything-took attendants over 2hrs to serve drinks and snack-WHY are they not served together? By time snack came needed another drink! Worst service in my life!

Since we started at syr the service, crews, and flights were just excellent

All the TV screens in my rows was non functional . The map shown for an international route was antiqued..

Boarding process was terrible. No assigned seat until the gate, then a long line to get seat assignment.

JetBlue was good. Kayak offered us a deal if we bundled the rental car. This was a complete scam. Kayak said the total was $222... but when we went to pick up the car the agent at Rent a wreck said that we had to pay "fees and taxes" for a grand total of $750. I would recommend not using kayak or rent a wreck. They are both complicit in this scam. JetBlue worked out well.

TV was broken and could not shut it off. The flicking was bother me and gave me a headache. The WiFi wouldn’t work correctly, I was able to text but not search the web or surf social media. The plane itself had a lot of wear and tear it is due for an update.

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.

The space between seat rows seemed to be larger than other airlines. I didn’t check their food or entertainment since I slept most of the way. They do seem to have a lot of options for purchase though.

Kayak sucked. You gave me a confirmation number that was not useable by the jet blue system. Nor did you send any check in emails. I’ll not be using your site again. Nice work.

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

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

Information on your arrival and departure airports