$176+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAS
Jun 29 — Jul 61
Round-trip
1 adult, Economy
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Cheapest flights from Islip to Las VegasExplore 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 May 30, 2026.
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 May 30, 2026.
This Booking.com deal was found by Cheapflights users on 5/27. 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.
Tue 6/234:41 pm
ISP
- LAS
1 stop21h 29m
Frontier
Wed 7/19:51 pm
LAS
- ISP
1 stop9h 12m
Frontier
Deal found 5/27![Frontier logo]()
$363
This Southwest deal was found by Cheapflights users on 5/26. 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.
Wed 10/144:25 pm
ISP
- LAS
1 stop9h 00m
Southwest
Mon 10/1910:50 pm
LAS
- ISP
1 stop10h 50m
Southwest
Deal found 5/26![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 5/29. 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.
Tue 9/2212:55 pm
ISP
- LAS
1 stop10h 05m
Southwest
Fri 9/2511:00 pm
LAS
- ISP
1 stop12h 30m
Southwest
Deal found 5/29![Southwest logo]()
$368
This Frontier deal was found by Cheapflights users on 5/28. 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.
Fri 7/1010:57 am
ISP
- LAS
1 stop13h 20m
Frontier
Tue 7/219:42 pm
LAS
- ISP
1 stop9h 11m
Frontier
Deal found 5/28![Frontier logo]()
$390
This Gotogate deal was found by Cheapflights users on 5/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:46 pm
ISP
- LAS
1 stop31h 33m
Frontier
Fri 7/1710:18 pm
LAS
- ISP
1 stop17h 43m
Frontier
Deal found 5/26![Frontier logo]()
$401
This Frontier deal was found by Cheapflights users on 5/29. 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.
Thu 8/2710:48 am
ISP
- LAS
1 stop12h 57m
Frontier
Sat 8/2910:12 pm
LAS
- ISP
1 stop8h 51m
Frontier
Deal found 5/29![Frontier logo]()
$410
This Southwest deal was found by Cheapflights users on 5/27. 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.
Tue 8/2510:30 am
ISP
- LAS
1 stop11h 25m
Southwest
Fri 8/2811:00 pm
LAS
- ISP
1 stop12h 30m
Southwest
Deal found 5/27![Southwest logo]()
$414
This Frontier deal was found by Cheapflights users on 5/30. 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.
Fri 7/1010:57 am
ISP
- LAS
1 stop13h 20m
Frontier
Tue 7/149:42 pm
LAS
- ISP
1 stop9h 11m
Frontier
Deal found 5/30![Frontier logo]()
$420
This Booking.com deal was found by Cheapflights users on 5/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:52 pm
ISP
- LAS
1 stop25h 54m
Frontier
Mon 6/299:51 pm
LAS
- ISP
1 stop15h 05m
Frontier
Deal found 5/25![Frontier logo]()
$422
Best flights from Islip to Las VegasDiscover carefully curated flight deals from Islip to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 30, 2026.
Discover carefully curated flight deals from Islip to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 30, 2026.
This Southwest deal was found by Cheapflights users on 5/29. 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.
Tue 9/2212:55 pm
ISP
- LAS
1 stop10h 05m
Southwest
Fri 9/2511:00 pm
LAS
- ISP
1 stop12h 30m
Southwest
Deal found 5/29![Southwest logo]()
$368
This Frontier deal was found by Cheapflights users on 5/25. 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.
Fri 8/1410:57 am
ISP
- LAS
1 stop13h 20m
Frontier
Sun 8/169:42 pm
LAS
- ISP
1 stop9h 11m
Frontier
Deal found 5/25![Frontier logo]()
$430
This Southwest deal was found by Cheapflights users on 5/27. 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.
Tue 8/2510:30 am
ISP
- LAS
2 stops12h 30m
Southwest
Fri 8/2811:30 pm
LAS
- ISP
2 stops9h 35m
Southwest
Deal found 5/27![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 5/26. 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.
Thu 7/25:50 pm
ISP
- LAS
1 stop8h 40m
Southwest
Sun 7/511:55 pm
LAS
- ISP
2 stops8h 55m
Southwest
Deal found 5/26![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 5/30. 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 8/106:10 am
ISP
- LAS
1 stop8h 20m
Southwest
Sat 8/1510:50 pm
LAS
- ISP
1 stop8h 55m
Southwest
Deal found 5/30![Southwest logo]()
$503
This Southwest deal was found by Cheapflights users on 5/30. 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.
Tue 6/304:40 pm
ISP
- LAS
2 stops9h 25m
Southwest
Fri 7/311:25 pm
LAS
- ISP
2 stops9h 10m
Southwest
Deal found 5/30![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 5/28. 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.
Fri 7/103:05 pm
ISP
- LAS
2 stops10h 10m
Southwest
Mon 7/136:55 pm
LAS
- ISP
2 stops10h 10m
Southwest
Deal found 5/28![Southwest logo]()
$513
This Southwest deal was found by Cheapflights users on 5/27. 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.
Sat 6/275:35 pm
ISP
- LAS
1 stop7h 10m
Southwest
Sat 7/410:10 pm
LAS
- ISP
1 stop10h 35m
Southwest
Deal found 5/27![Southwest logo]()
$530
This Southwest deal was found by Cheapflights users on 5/29. 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.
Thu 7/235:50 pm
ISP
- LAS
1 stop8h 45m
Southwest
Sat 7/2510:50 pm
LAS
- ISP
2 stops9h 55m
Southwest
Deal found 5/29![Southwest logo]()
$532
This Southwest deal was found by Cheapflights users on 5/29. 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.
Fri 7/245:50 pm
ISP
- LAS
2 stops9h 05m
Southwest
Sat 7/2510:50 pm
LAS
- ISP
2 stops9h 55m
Southwest
Deal found 5/29![Southwest logo]()
$537
Last-minute flights from Islip to Las VegasDiscover last-minute flight deals from Islip to Las Vegas. Data last updated May 30, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Las Vegas. Data last updated May 30, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/25. 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.
Sat 5/306:43 pm
ISP
- LAS
1 stop9h 10m
Frontier
Thu 7/99:42 pm
LAS
- ISP
1 stop9h 11m
Frontier
Deal found 5/25![Frontier logo]()
$460
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:52 pm
ISP
- LAS
1 stop16h 18m
Frontier
Thu 6/119:51 pm
LAS
- ISP
1 stop20h 06m
Frontier
Deal found 5/27![Frontier logo]()
$410
This Expedia deal was found by Cheapflights users on 5/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/137:50 pm
ISP
- LAS
1 stop29h 16m
Frontier
Mon 6/159:51 pm
LAS
- ISP
1 stop15h 05m
Frontier
Deal found 5/27![Frontier logo]()
$430
This Trip.com deal was found by Cheapflights users on 5/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/189:52 pm
ISP
- LAS
1 stop26h 08m
Frontier
Mon 6/229:51 pm
LAS
- ISP
1 stop15h 05m
Frontier
Deal found 5/28![Frontier logo]()
$433
This Expedia deal was found by Cheapflights users on 5/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/197:50 pm
ISP
- LAS
1 stop29h 16m
Frontier
Mon 6/229:51 pm
LAS
- ISP
1 stop15h 05m
Frontier
Deal found 5/28![Frontier logo]()
$390
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/199:52 pm
ISP
- LAS
1 stop28h 47m
Multiple Airlines
Tue 6/239:51 pm
LAS
- ISP
1 stop20h 06m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$453
This Kiwi.com deal was found by Cheapflights users on 5/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/199:52 pm
ISP
- LAS
1 stop28h 47m
Multiple Airlines
Wed 6/249:51 pm
LAS
- ISP
1 stop20h 06m
Multiple Airlines
Deal found 5/28![Multiple Airlines logo]()
$464
This Booking.com deal was found by Cheapflights users on 5/25. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:52 pm
ISP
- LAS
1 stop25h 54m
Frontier
Mon 6/299:51 pm
LAS
- ISP
1 stop15h 05m
Frontier
Deal found 5/25![Frontier logo]()
$422
This Booking.com deal was found by Cheapflights users on 5/27. 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.
Tue 6/234:41 pm
ISP
- LAS
1 stop21h 29m
Frontier
Wed 7/19:51 pm
LAS
- ISP
1 stop9h 12m
Frontier
Deal found 5/27![Frontier logo]()
$363
This Booking.com deal was found by Cheapflights users on 5/27. 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.
Fri 6/267:50 pm
ISP
- LAS
1 stop29h 16m
Frontier
Fri 7/39:15 am
LAS
- ISP
1 stop21h 48m
Frontier
Deal found 5/27![Frontier logo]()
$424
This Gotogate deal was found by Cheapflights users on 5/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/279:52 pm
ISP
- LAS
1 stop16h 18m
Frontier
Fri 7/39:47 pm
LAS
- ISP
1 stop9h 16m
Frontier
Deal found 5/26![Frontier logo]()
$450
This Booking.com deal was found by Cheapflights users on 5/30. 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.
Tue 6/304:41 pm
ISP
- LAS
1 stop21h 48m
Frontier
Fri 7/39:47 pm
LAS
- ISP
1 stop9h 16m
Frontier
Deal found 5/30![Frontier logo]()
$442
One-way flights from Islip to Las VegasSearch for one-way flight options from Islip to Las Vegas. Find affordable one-way fares based on user searches. Data last updated May 30, 2026.
Search for one-way flight options from Islip to Las Vegas. Find affordable one-way fares based on user searches. Data last updated May 30, 2026.
This Southwest deal was found by Cheapflights users on 5/26. 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.
Tue 9/83:20 pm
ISP
- LAS
1 stop7h 40m
Southwest
Deal found 5/26![Southwest logo]()
$176
This Priceline deal was found by Cheapflights users on 5/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:48 am
ISP
- LAS
1 stop12h 32m
Frontier
Deal found 5/27![Frontier logo]()
$201
This CheapOair deal was found by Cheapflights users on 5/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:57 am
ISP
- LAS
1 stop12h 13m
Frontier
Deal found 5/26![Frontier logo]()
$221
This Southwest deal was found by Cheapflights users on 5/27. 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.
Thu 7/23:05 pm
ISP
- LAS
2 stops10h 10m
Southwest
Deal found 5/27![Southwest logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 5/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:27 pm
ISP
- LAS
3 stops33h 38m
Multiple Airlines
Deal found 5/26![Multiple Airlines logo]()
$241
This Travelocity deal was found by Cheapflights users on 5/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:00 am
ISP
- LAS
1 stop27h 14m
Frontier
Deal found 5/27![Frontier logo]()
$251
This Frontier deal was found by Cheapflights users on 5/29. 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 8/510:57 am
ISP
- LAS
1 stop12h 13m
Frontier
Deal found 5/29![Frontier logo]()
$271
This CheapOair deal was found by Cheapflights users on 5/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:48 am
ISP
- LAS
1 stop12h 32m
Frontier
Deal found 5/26![Frontier logo]()
$273
This Southwest deal was found by Cheapflights users on 5/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:40 pm
ISP
- LAS
1 stop7h 05m
Southwest
Deal found 5/25![Southwest logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/75:27 pm
ISP
- LAS
2 stops29h 43m
Multiple Airlines
Deal found 5/25![Multiple Airlines logo]()
$299
This JetBlue deal was found by Cheapflights users on 5/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:07 pm
ISP
- LAS
1 stop10h 40m
JetBlue
Deal found 5/25![JetBlue logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 5/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:56 am
ISP
- LAS
3 stops25h 44m
Breeze Airways
Deal found 5/25![Breeze Airways logo]()
$335
Find 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 May 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (Booking.com) |
One-way from | $176 (Southwest) |
Popular in | November |
Cheapest in | January |
Average price | $534 |
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 May 30, 2026.
Use the filters below to find and compare flights from Islip to Las Vegas that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Tue 9/22
12:55 pm-8:00 pm
1 stop10h 05m
Las Vegas Harry Reid Intl
Fri 9/25
11:00 pm-2:30 pm
1 stop12h 30m
$368
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Tue 8/25
10:30 am-8:00 pm
2 stops12h 30m
Las Vegas Harry Reid Intl
Fri 8/28
11:30 pm-12:05 pm
2 stops9h 35m
$419
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Fri 8/14
10:57 am-9:17 pm
1 stop13h 20m
Las Vegas Harry Reid Intl
Sun 8/16
9:42 pm-9:53 am
1 stop9h 11m
$430
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Thu 7/2
5:50 pm-11:30 pm
1 stop8h 40m
Las Vegas Harry Reid Intl
Sun 7/5
11:55 pm-11:50 am
2 stops8h 55m
$472
Quickest round-trip
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Mon 8/10
6:10 am-11:30 am
1 stop8h 20m
Las Vegas Harry Reid Intl
Sat 8/15
10:50 pm-10:45 am
1 stop8h 55m
$503
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Tue 6/30
4:40 pm-11:05 pm
2 stops9h 25m
Las Vegas Harry Reid Intl
Fri 7/3
11:25 pm-11:35 am
2 stops9h 10m
$513
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Fri 7/10
3:05 pm-10:15 pm
2 stops10h 10m
Las Vegas Harry Reid Intl
Mon 7/13
6:55 pm-8:05 am
2 stops10h 10m
$513
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Sat 6/27
5:35 pm-9:45 pm
1 stop7h 10m
Las Vegas Harry Reid Intl
Sat 7/4
10:10 pm-11:45 am
1 stop10h 35m
$530
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Thu 7/23
5:50 pm-11:35 pm
1 stop8h 45m
Las Vegas Harry Reid Intl
Sat 7/25
10:50 pm-11:45 am
2 stops9h 55m
$532
IslipLas Vegas
ISP - LAS
ISPLAS
Islip Long Island
Fri 7/24
5:50 pm-11:55 pm
2 stops9h 05m
Las Vegas Harry Reid Intl
Sat 7/25
10:50 pm-11:45 am
2 stops9h 55m
$537
Showing 1-10 of 22 resultsSorted by cheapest first
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ISP-LAS
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, January is the cheapest month in which you can book a flight from Islip, New York to Las Vegas (average of $362). Flying from Islip, New York to Las Vegas in November is currently the most expensive (average of $1,076). 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.
How much does it cost to fly round-trip from Islip, New York to Las Vegas?
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 May 30, 2026.
See what other customers who have flown with Southwest from Islip to Las Vegas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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.
Traveling to a place near Las Vegas?
Book flights to Las Vegas if you plan to visit one of these locationsParadise
Mesquite
Henderson
North Las Vegas
Kingman
Winchester
Boulder City
Needles
Sunrise Manor
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Top airline flying from Islip to Las Vegas
Discover the top airline 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 May 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$379 | Average$551 | FlexibilityNo cancel fee | On-time63% |