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$340+ Cheap flights from Islip, NY to Burlington (ISP - BTV)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BTV
jun 1 — jun 81
seg 6/1
seg 6/8
1 adult, Economy
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Cheap flight deals from Islip to Burlington

Cheapest flights from Islip to Burlington
Explore the most affordable flight options available from Islip to Burlington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on maio 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ter 5/125:38 pm
ISP
-
BTV
1 stop16h 34m
Multiple Airlines
sex 5/1512:36 pm
BTV
-
ISP
1 stop24h 57m
Multiple Airlines
Deal found 4/28$340
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 5/2711:00 am
ISP
-
BTV
2 stops24h 44m
Multiple Airlines
qua 6/310:52 am
BTV
-
ISP
1 stop23h 13m
Multiple Airlines
Deal found 4/27$353
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ter 5/125:38 pm
ISP
-
BTV
1 stop16h 34m
Multiple Airlines
qui 5/1412:24 pm
BTV
-
ISP
2 stops21h 41m
Multiple Airlines
Deal found 4/28$373
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
seg 5/112:28 pm
ISP
-
BTV
1 stop22h 17m
Multiple Airlines
qua 5/1310:52 am
BTV
-
ISP
1 stop23h 35m
Multiple Airlines
Deal found 4/28$391
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ter 5/125:38 pm
ISP
-
BTV
1 stop16h 34m
Multiple Airlines
qua 5/135:46 pm
BTV
-
ISP
2 stops24h 20m
Multiple Airlines
Deal found 4/28$395
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
seg 5/112:28 pm
ISP
-
BTV
1 stop22h 17m
Breeze Airways
sex 5/1512:36 pm
BTV
-
ISP
1 stop24h 57m
Breeze Airways
Deal found 4/28$408
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
seg 5/112:28 pm
ISP
-
BTV
1 stop22h 17m
Multiple Airlines
qui 5/1412:24 pm
BTV
-
ISP
2 stops21h 41m
Multiple Airlines
Deal found 4/28$440
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
qua 5/1311:57 am
ISP
-
BTV
1 stop23h 47m
Breeze Airways
sex 5/1512:36 pm
BTV
-
ISP
1 stop24h 57m
Breeze Airways
Deal found 4/28$441
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/125:38 pm
ISP
-
BTV
1 stop16h 34m
Multiple Airlines
sáb 5/165:46 pm
BTV
-
ISP
2 stops24h 20m
Multiple Airlines
Deal found 4/27$461

Find flight deals from Islip to Burlington

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Burlington (BTV). 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 maio 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$340
(Kiwi.com)

Popular in

March

Cheapest in

May

Average price

$279
Provider with most accurate pricing for Islip Long Island-Burlington flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Burlington flights.
Search Deals
From Islip Long Island to Burlington
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Burlington 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 maio 2, 2026.
Use the filters below to find and compare flights from Islip to Burlington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

qua 5/27

11:00 am-11:44 am

2 stops24h 44m

Burlington

qua 6/3

10:52 am-10:05 am

1 stop23h 13m

$357
Quickest round-trip

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

ter 5/12

5:38 pm-10:12 am

1 stop16h 34m

Burlington

qui 5/14

12:24 pm-10:05 am

2 stops21h 41m

$373

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

ter 5/12

5:38 pm-10:12 am

1 stop16h 34m

Burlington

qua 5/13

5:46 pm-6:06 pm

2 stops24h 20m

$395

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

ter 5/12

5:38 pm-10:12 am

1 stop16h 34m

Burlington

sáb 5/16

5:46 pm-6:06 pm

2 stops24h 20m

$461

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

ter 5/12

2:08 pm-5:06 pm

2 stops26h 58m

Burlington

sáb 5/16

5:46 pm-6:06 pm

2 stops24h 20m

$855

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

sex 7/10

2:28 pm-10:12 am

2 stops19h 44m

Burlington

dom 7/12

12:24 pm-1:28 pm

1 stop25h 04m

$917

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

sex 7/3

2:28 pm-10:12 am

2 stops19h 44m

Burlington

qua 7/8

10:52 am-7:09 pm

3 stops32h 17m

$958

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

qua 5/27

7:41 pm-11:44 am

2 stops16h 03m

Burlington

qua 6/3

10:52 am-7:09 pm

3 stops32h 17m

$1,019

IslipBurlington

ISP - BTV

ISPBTV

Islip Long Island

qua 5/13

7:41 pm-11:44 am

2 stops16h 03m

Burlington

sex 5/15

12:36 pm-1:33 pm

1 stop24h 57m

$1,078

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Sorted by cheapest first

Compare providers for flights from Islip to Burlington

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 Burlington in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Burlington, Vermont 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-Burlington, Vermont flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Burlington, Vermont flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Burlington, Vermont 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-Burlington, Vermont 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 Burlington

Have a flexible travel schedule? Discover the best time to fly to Burlington from Islip with our price prediction graph.
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.

Related info for your journey

Find useful and relevant information for your journey from Islip to Burlington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Islip to Burlington that include hotel bookings?

    Yes. In addition to deals on Islip to Burlington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Burlington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Burlington.

  • Can I find deals for business class flights from Islip to Burlington?

    Yes. Cheapflights offers flight deals from Islip to Burlington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Traveling to a place near Burlington?

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