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$254+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — BZN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Popular in

December

Cheapest in

November

Average price

$472
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Islip to Montana

One-way flights from Islip to Montana
Search for one-way flight options from Islip to Montana. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. 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 7/45:30 amISP - BZN
2 stops9h 35mSouthwest
Deal found 6/10$254
This JetBlue Airways deal was found by Cheapflights users on 6/10. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/42:19 pmISP - BZN
1 stop23h 12mMultiple Airlines
Deal found 6/10$418

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 June 12, 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

Fri 7/4

5:30 am-1:05 pm

2 stops9h 35m

$254

IslipBozeman

ISP - BZN

ISPBZN

Islip Long Island

Fri 7/4

2:19 pm-11:31 am

1 stop23h 12m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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, October is the cheapest month in which you can book a flight from Islip, New York to Montana (average of $371). Flying from Islip, New York to Montana in May is currently the most expensive (average of $479). 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.

Rainfall in Montana by month

Plan your trip to Montana by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Montana ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Montana when rainfall is around 0.4 in.

Temperature in Montana by month

Plan your trip to Montana by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Montana

Get insights into the airlines that provide service to Montana. 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 Montana. Reviews last updated June 12, 2025.
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

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

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to Montana (average of $371). Flying from Islip, New York to Montana in May is currently the most expensive (average of $479). 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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