Cheap Flights from Islip (ISP) to West Yellowstone (WYS)

Popular airlines from MacArthur Airport (ISP) to West Yellowstone, MT (WYS-Yellowstone)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Islip to West Yellowstone (ISP-WYS)

Prices were available within the past 7 days and start at for one-way flights and $1,300 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Mon, Sep 29 - Thu, Oct 9
ISP
Islip
WYS
West Yellowstone
$1,300 Roundtrip, found 4 days ago
$1,300
Roundtrip
found 4 days ago
Select Cape Air flight, departing Mon, Sep 29 from Islip to West Yellowstone, returning Thu, Oct 9, priced at $1,300 found 4 days ago
Cape Air
Mon, Sep 29 - Tue, Oct 7
ISP
Islip
WYS
West Yellowstone
$1,303 Roundtrip, found 4 days ago
$1,303
Roundtrip
found 4 days ago
Select Cape Air flight, departing Mon, Sep 29 from Islip to West Yellowstone, returning Tue, Oct 7, priced at $1,303 found 4 days ago
Flights from Islip (ISP) to West Yellowstone (WYS)
Origin airport
MacArthur
Destination airport
Yellowstone
Roundtrip price
$1,300
Distance
1929 mi

Islip to West Yellowstone Flights

The cheapest times to fly from Islip to West Yellowstone

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to West Yellowstone are during the month of September. You can find some of the cheapest flights from Islip to West Yellowstone with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to West Yellowstone

Sunday is one of the best days to book for cheap flights from Islip to West Yellowstone: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to West Yellowstone

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to West Yellowstone in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to West Yellowstone flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to West Yellowstone airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Yellowstone Airport (WYS) cost?
Discover the latest flight deals from ISP to WYS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to WYS?
The cheapest flights from ISP to WYS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ISP to WYS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ISP to WYS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Yellowstone Airport (WYS)?
Nonstop flights from MacArthur Airport (ISP) to Yellowstone Airport (WYS) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ISP to WYS?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Yellowstone Airport (WYS)?
To land at Yellowstone Airport (WYS) on schedule, pick a flight that takes off from MacArthur Airport (ISP) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Yellowstone Airport (WYS) last-minute?
Last-minute bookings from ISP to WYS are usually more expensive. To lock in the best rates, start searching for flights well ahead of time. That being said, if you're flexible with your travel plans, you may land a cheap ticket right before your journey.
Is it cheaper to book an ISP to WYS flight and hotel package?
You can save money by securing an ISP to WYS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal flights and accommodations, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Yellowstone Airport (WYS)?
You can usually cancel or reschedule your ISP to WYS flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.