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$424+ Cheap flights from Islip, NY (ISP) to Montana

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BZN
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Find 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 octubre 30, 2025.

This Southwest deal was found by Cheapflights users on 10/29. 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.
vie. 12/125:50 amISP - BZN
2 stops13h 20mSouthwest
mar. 12/165:30 amBZN - ISP
2 stops14h 35mSouthwest
Deal found 10/29$424
This United deal was found by Cheapflights users on 10/29. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1212:40 pmISP - BZN
3 stops25h 19mMultiple Airlines
mar. 12/162:42 pmBZN - ISP
2 stops23h 33mMultiple Airlines
Deal found 10/29$1,169

Cheap flight deals from Islip to Montana

Keep the following information in mind while searching for Islip to Montana flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$424
(Southwest)

Popular in

December

Cheapest in

November

Average price

$458
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.
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From Islip Long Island to Montana
Search Deals
High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 octubre 30, 2025.
Use the filters below to find and compare flights from Islip to Montana that are best for you.

Fly from

Islip

Fly to

Montana

Route

Depart

Return

Price

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

vie. 12/12

5:50 am-5:10 pm

2 stops13h 20m

Bozeman Gallatin Field

mar. 12/16

5:30 am-10:05 pm

2 stops14h 35m

$424

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

vie. 12/12

12:40 pm-11:59 am

3 stops25h 19m

Bozeman Gallatin Field

mar. 12/16

2:42 pm-4:15 pm

2 stops23h 33m

$1,169

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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

What is the cheapest month to book a flight from Islip, New York to Montana?

Currently, April is the cheapest month in which you can book a flight from Islip, New York to Montana (average of $184). Flying from Islip, New York to Montana in February is currently the most expensive (average of $282). 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.

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.

  • How long is the flight from Islip, New York to Montana?

    A quick flight from Islip, New York to Montana can take about 13h 20m. Southwest provides one of the quickest options available for as low as $424. Airlines will cover a distance of 1925 mi.

  • 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.

  • What is the cheapest month to book a flight from Islip, New York to Montana?

    Currently, April is the cheapest month in which you can book a flight from Islip, New York to Montana (average of $184). Flying from Islip, New York to Montana in February is currently the most expensive (average of $282). 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.

See more FAQs

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