LAS - ISP

$168 Find Cheap Flights from Las Vegas to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to Islip departing on 9/22. 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 Islip

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

Cheapest round-trip
$252
Frontier
Wed 9/9Tue 9/15
LAS - ISP • 1 stop
Cheapest one-way
$168
Southwest
Tue 9/22
LAS - ISP • 1 stop
Top airlines
Frontier
Cheapest • from $252 (round-trip)
Southwest
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 Las Vegas and Islip. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Orlando (MCO)
Cheapest • Avg $312 (round-trip)
Baltimore (BWI)
Shortest trip • 7h 13m (one-way)
Insights
Insights
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Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Islip!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Las Vegas to Islip 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 Las Vegas to Islip

Wed, Sep 9 - Tue, Sep 15
Frontier Logo
10:12 pm - 9:33 am
LAS
-
ISP
8h 21m
1 stop
Frontier Logo
4:13 pm - 9:26 am
ISP
-
LAS
20h 13m
1 stop
$252Frontier
Wed, Aug 19 - Sat, Aug 29
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
$304Frontier
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
12:20 am - 12:10 pm
LAS
-
ISP
8h 50m
2 stops
Southwest Logo
3:20 pm - 8:00 pm
ISP
-
LAS
7h 40m
1 stop
$340Southwest
Tue, Sep 8 - Tue, Sep 15
Southwest Logo
12:20 am - 12:10 pm
LAS
-
ISP
8h 50m
2 stops
Southwest Logo
3:20 pm - 10:10 pm
ISP
-
LAS
9h 50m
2 stops
$345Southwest
Wed, Jul 1 - Wed, Jul 8
Frontier Logo
9:51 pm - 10:03 am
LAS
-
ISP
9h 12m
1 stop
Frontier Logo
7:46 pm - 12:19 am
ISP
-
LAS
31h 33m
1 stop
$349Frontier
Tue, Sep 1 - Sat, Sep 5
Frontier Logo
8:17 pm - 10:03 am
LAS
-
ISP
10h 46m
1 stop
Frontier Logo
10:48 am - 8:45 pm
ISP
-
LAS
12h 57m
1 stop
$370Frontier
Wed, Jul 1 - Wed, Jul 8
Frontier Logo
9:51 pm - 10:03 am
LAS
-
ISP
9h 12m
1 stop
Frontier Logo
10:57 am - 8:10 pm
ISP
-
LAS
12h 13m
1 stop
$389Frontier
Wed, Sep 23 - Mon, Sep 28
Frontier Logo
10:12 pm - 9:33 am
LAS
-
ISP
8h 21m
1 stop
Frontier Logo
4:13 pm - 9:26 am
ISP
-
LAS
20h 13m
1 stop
$390Frontier
Fri, Aug 28 - Mon, Aug 31
Multiple Airlines Logo
9:25 am - 10:03 am
LAS
-
ISP
21h 38m
1 stop
Multiple Airlines Logo
2:28 pm - 9:55 pm
ISP
-
LAS
10h 27m
2 stops
$393Multiple Airlines
Wed, Sep 23 - Mon, Sep 28
Southwest Logo
8:55 am - 9:05 pm
LAS
-
ISP
9h 10m
1 stop
Southwest Logo
4:05 pm - 9:35 pm
ISP
-
LAS
8h 30m
2 stops
$406Southwest
Booking Insights

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

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

Which airlines provide the cheapest flights from Las Vegas to Islip?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Las Vegas to Islip were found on Frontier ($252) and Southwest ($340).

Find deals

Good to know

Cheapest flight$168
Flight from Las Vegas to Islip

When to book flights from Las Vegas to Islip

Are your dates flexible? Find out the best times to travel from Las Vegas to Islip 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 Las Vegas to Islip

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

    In the last 5 days, the lowest price for a flight from Las Vegas to Islip was $168 for a one-way ticket and $252 for a round-trip.

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

    No

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

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

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

    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 Las Vegas to Islip.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Las Vegas 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 Las Vegas to Islip?

    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 Islip with an airline and back to Las Vegas with another airline. Booking your flights between Las Vegas and ISP 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 Las Vegas to Islip?

    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 Islip from Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Las Vegas to Islip

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Islip. 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 Las Vegas to Islip? 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 4237 reviews
7.0Food
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
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.

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.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

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!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

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

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

Information on your arrival and departure airports

Las Vegas (LAS)
Islip (ISP)