$1,328+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BZN
jan 15 — jan 221
1 adult, Economy
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Best flights from Islip to MontanaDiscover carefully curated flight deals from Islip to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated dezembro 16, 2025.
Discover carefully curated flight deals from Islip to Montana that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated dezembro 16, 2025.
This Expedia deal was found by Cheapflights users on 12/16. 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.
qua 5/209:59 amISP - BZN
2 stops15h 52mMultiple Airlines
seg 5/257:33 pmBZN - ISP
2 stops18h 37mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$1,328
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 dezembro 16, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Popular in | December |
Cheapest in | November |
Average price | $609 |
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 dezembro 16, 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
qua 5/20
9:59 am-11:51 pm
2 stops15h 52m
Bozeman Gallatin Field
seg 5/25
7:33 pm-4:10 pm
2 stops18h 37m
$1,328
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 $179). 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.