LAS - ISP

$90 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 3/4. 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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$269
Frontier
Thu 3/5Mon 3/9
LAS - ISP • 1 stop
Cheapest one-way
$80
Typical prices: $336-$513
Frontier
Wed 3/4
LAS - ISP • 1 stop
Top airlines
Frontier
Cheapest • from $269 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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

Thu, Mar 5 - Mon, Mar 9
Frontier Logo
11:59 pm - 12:47 pm
LAS
-
ISP
9h 48m
1 stop
Frontier Logo
1:22 pm - 10:49 pm
ISP
-
LAS
12h 27m
1 stop
$269Frontier
Thu, Mar 5 - Mon, Mar 9
Frontier Logo
11:59 pm - 12:47 pm
LAS
-
ISP
9h 48m
1 stop
Frontier Logo
1:22 pm - 10:49 pm
ISP
-
LAS
12h 27m
1 stop
$308Frontier
Thu, Feb 12 - Mon, Feb 16
Frontier Logo
7:05 am - 7:14 pm
LAS
-
ISP
33h 09m
2 stops
Frontier Logo
3:34 pm - 10:15 am
ISP
-
LAS
21h 41m
1 stop
$397Frontier
Tue, Feb 10 - Thu, Feb 12
Frontier Logo
11:03 pm - 1:13 pm
LAS
-
ISP
11h 10m
1 stop
Frontier Logo
3:34 pm - 10:15 am
ISP
-
LAS
21h 41m
1 stop
$420Frontier
Thu, Feb 12 - Mon, Feb 16
Frontier Logo
11:03 pm - 2:39 pm
LAS
-
ISP
12h 36m
1 stop
Frontier Logo
3:34 pm - 10:15 am
ISP
-
LAS
21h 41m
1 stop
$450Frontier
Tue, Feb 10 - Thu, Feb 12
Multiple Airlines Logo
11:03 pm - 1:13 pm
LAS
-
ISP
11h 10m
1 stop
Multiple Airlines Logo
7:26 pm - 10:50 pm
ISP
-
LAS
30h 24m
2 stops
$452Multiple Airlines
Mon, Jun 8 - Tue, Jun 30
Southwest Logo
6:55 am - 5:15 pm
LAS
-
ISP
7h 20m
1 stop
Southwest Logo
6:00 am - 10:30 am
ISP
-
LAS
7h 30m
1 stop
$467Southwest
Thu, Feb 26 - Mon, Mar 2
JetBlue Logo
9:30 pm - 8:47 am
LAS
-
ISP
8h 17m
1 stop
JetBlue Logo
1:22 pm - 10:49 pm
ISP
-
LAS
12h 27m
1 stop
$471JetBlue
Mon, Jun 8 - Tue, Jun 30
Southwest Logo
6:55 am - 5:15 pm
LAS
-
ISP
7h 20m
1 stop
Southwest Logo
2:55 pm - 9:05 pm
ISP
-
LAS
9h 10m
2 stops
$472Southwest
Mon, Jun 8 - Tue, Jun 30
Southwest Logo
11:25 pm - 11:50 am
LAS
-
ISP
9h 25m
2 stops
Southwest Logo
6:00 am - 2:30 pm
ISP
-
LAS
11h 30m
2 stops
$477Southwest
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 72 hours.

In the past 3 days, the cheapest round-trip tickets from Las Vegas to Islip were found on Frontier ($269) and Southwest ($467).

Find deals

Good to know

Low seasonMarch
Cheapest flight$80
Best time to beat the crowds with an average 62% drop in price.
Most popular time to fly and prices are also 62% lower on average.
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 3 days, the lowest price for a flight from Las Vegas to Islip was $80 for a one-way ticket and $269 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.
8.0
SouthwestOverall score based on 4268 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
8.6Crew
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

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)