BOI - ISP

$536 Find Cheap Flights from Boise to Islip - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest one-way
$536
Typical prices: $258-$284
Frontier
Mon 11/19
BOI - ISP • 2 stops
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Cheap Flights from Boise to Islip (BOI-ISP)

 
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Recent round-trip flight deals from Boise to Islip

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BOI  Boise Airport-ISP Islip Long Island
2190 mimulti-stop
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ISP  Islip Long Island-BOI Boise Airport
2190 mimulti-stop
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Key details for Boise to Islip flights

Cheapest flight

$536
One-way flight from Boise to Islip

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 answers about this route, including flight times, airports, airlines and booking tips.

  • 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.

  • How are flight prices from Boise to Islip looking right now?

    One-way fares from Boise to Islip are currently higher than usual. Average one-way flight prices are about $536, which is 88% above the typical average for this route.

  • 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 averaging $107 for economy cars. Top options include:

    • Budget
    • Enterprise Rent-A-Car
    • Avis
    • National
    • Empire Rent A Car

  • 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. Flexible dates can save you up to 32% on flights from Boise to Islip. 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.

  • 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.

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 are flexible, aim for a Wednesday departure and avoid flying on Friday. On this route, Wednesday flights average $573, about $264 less than Friday fares (32% savings) based on the last 12 months.

More options for your flight from Boise to Islip

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