BOI - ISP

Find cheap flights from Boise to Islip - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Islip!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Boise to Islip (BOI-ISP)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Islip

Multiple Airlines Logo
BOI  Boise Airport-ISP Islip Long Island
2190 mimulti-stop
Multiple Airlines Logo
ISP  Islip Long Island-BOI Boise Airport
2190 mimulti-stop
Multiple Airlines
Useful Info

When to book flights from Boise to Islip

Are your dates flexible? Find out the best times to travel from Boise to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boise to Islip flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Boise to Islip?

    Flights from Boise to Islip usually depart from Boise Air Term. Gowen Fld (BOI) and arrive at Islip Long Island (ISP).

  • Can I save money by using flexible dates for flights from Boise to Islip?

    Yes. Being flexible with your travel dates can save you up to 32% on the Boise to Islip route. Wednesday is the cheapest departure day at $573 round-trip on average, while Friday is the most expensive at $837, a difference of $264. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • Do I need a passport to fly from Boise to Islip?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • What is the time difference between Boise and Islip?

    Islip is 2 hours ahead of Boise (Eastern Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Islip Long Island Airport (ISP)?

    Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include:
    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National
    • Empire Rent A Car

Your guide to booking Boise to Islip flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Friday. On this route, Wednesday flights average $573 - about $264 less than Friday (32% savings) based on the last 12 months.

More options for your flight from Boise to Islip

Complete your trip to Islip with a hotel stay or car rental

Car rentals in Islip
Hotels in Islip