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$190+ Cheap flights from Islip, NY (ISP) to Montana

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BZN
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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Cheap flight deals from Islip to Montana

Cheapest flights from Islip to Montana
Explore the most affordable flight options available from Islip to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This Southwest deal was found by Cheapflights users on 7/27. 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 8/15:55 am
ISP
-
BZN
2 stops10h 20m
Southwest
Sat 8/87:10 am
BZN
-
ISP
2 stops11h 35m
Southwest
Deal found 7/27$1,092
This KAYAK deal was found by Cheapflights users on 7/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:16 pm
ISP
-
BZN
2 stops26h 30m
Multiple Airlines
Fri 9/1110:34 am
BZN
-
ISP
2 stops30h 01m
Multiple Airlines
Deal found 7/27$1,189
This Priceline deal was found by Cheapflights users on 7/27. 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.
Sat 8/17:05 am
ISP
-
BZN
1 stop7h 40m
Multiple Airlines
Sat 8/86:03 am
BZN
-
ISP
2 stops12h 56m
Multiple Airlines
Deal found 7/27$1,736
This Expedia deal was found by Cheapflights users on 7/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:31 am
ISP
-
BIL
2 stops18h 20m
Multiple Airlines
Fri 8/146:00 am
BIL
-
ISP
2 stops12h 59m
Multiple Airlines
Deal found 7/26$1,927

Find flight deals from Islip to Montana

Keep the following information in mind while searching for Islip to Montana flight deals. Data was last updated July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,189
(KAYAK)

One-way from

$190
(Southwest)

Popular in

December

Cheapest in

November

Average price

$470
Provider with most accurate pricing for New York (NYC)-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Bozeman Gallatin Field flights.
Search Deals
From Islip Long Island to Montana
Search Deals
One-way flight from Islip Long Island to Montana
Search Deals
High demand for flights, 11% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Montana 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 July 29, 2026.
Use the filters below to find and compare flights from Islip to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Tue 9/8

2:16 pm-2:46 pm

2 stops26h 30m

Bozeman Gallatin Field

Fri 9/11

10:34 am-6:35 pm

2 stops30h 01m

$1,189
Quickest round-trip

IslipBillings

ISP - BIL

ISPBIL

Islip Long Island

Mon 8/10

7:31 am-11:51 pm

2 stops18h 20m

Billings Logan Intl

Fri 8/14

6:00 am-8:59 pm

2 stops12h 59m

$1,927
Cheapest one-way
Quickest one-way

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Tue 9/29

3:20 pm-10:30 pm

2 stops9h 10m

$190

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Tue 9/29

1:38 pm-9:06 am

3 stops45h 28m

$252

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Mon 8/17

2:16 pm-10:26 am

2 stops22h 10m

$652

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Sun 8/16

5:34 pm-2:09 pm

2 stops22h 35m

$798

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Wed 8/12

10:05 am-11:42 am

1 stop27h 37m

$853

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Thu 8/13

7:31 am-11:19 pm

2 stops17h 48m

$868

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Sorted by cheapest first

Best time to book a flight from Islip to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana 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.

Cheapflights Insights

Everything you need to know about your flight from Islip to Montana

No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly from for flights from Islip to Montana?

    If you book a flight to Montana from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

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

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

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

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

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

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

See more FAQs

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