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$296+ Cheap flights from Grand Rapids to Islip, NY (GRR - ISP)

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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
GRR — ISP
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Grand Rapids to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Grand Rapids (GRR) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$296
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$279
Provider with most accurate pricing for Grand Rapids Gerald R. Ford Intl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for Grand Rapids Gerald R. Ford Intl-Islip Long Island flights.
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From Grand Rapids Gerald R. Ford Intl to Islip Long Island
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Highest demand for flights based on searches. 15% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Grand Rapids to Islip

Cheapest flights from Grand Rapids to Islip
Explore the most affordable flight options available from Grand Rapids to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:54 pmGRR - ISP
2 stops16h 06mMultiple Airlines
Sun 12/218:35 pmISP - GRR
1 stop24h 31mMultiple Airlines
Deal found 10/27$296
This Southwest deal was found by Cheapflights users on 10/27. 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.
Tue 12/167:10 amGRR - ISP
2 stops8h 10mSouthwest
Sun 12/215:40 amISP - GRR
2 stops6h 05mSouthwest
Deal found 10/27$301
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:24 pmGRR - ISP
1 stop19h 18mMultiple Airlines
Sun 12/2111:40 amISP - GRR
2 stops21h 07mMultiple Airlines
Deal found 10/27$324
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:40 amGRR - ISP
2 stops23h 20mMultiple Airlines
Sun 12/218:35 pmISP - GRR
1 stop24h 31mMultiple Airlines
Deal found 10/27$330
This Southwest deal was found by Cheapflights users on 10/26. 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.
Sun 12/141:25 pmGRR - ISP
1 stop10h 25mSouthwest
Sun 12/215:40 amISP - GRR
2 stops6h 05mSouthwest
Deal found 10/26$343
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:00 amGRR - ISP
2 stops36h 34mMultiple Airlines
Sun 12/218:35 pmISP - GRR
1 stop24h 31mMultiple Airlines
Deal found 10/27$354
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:00 amGRR - ISP
2 stops30h 45mMultiple Airlines
Sun 12/218:35 pmISP - GRR
1 stop24h 31mMultiple Airlines
Deal found 10/27$367

Cheapflights Fare Finder

 
Customize your flight search to find flights from Grand Rapids to Islip 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 October 28, 2025.
Use the filters below to find and compare flights from Grand Rapids to Islip that are best for you.

Fly from

Grand Rapids

Fly to

Islip

Route

Depart

Return

Price

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Sat 12/13

6:54 pm-11:00 am

2 stops16h 06m

Islip Long Island

Sun 12/21

8:35 pm-9:06 pm

1 stop24h 31m

$296

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Thu 12/18

5:24 pm-12:42 pm

1 stop19h 18m

Islip Long Island

Sun 12/21

8:35 pm-9:06 pm

1 stop24h 31m

$296

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Tue 12/16

7:10 am-3:20 pm

2 stops8h 10m

Islip Long Island

Sun 12/21

5:40 am-11:45 am

2 stops6h 05m

$301

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Wed 12/17

11:40 am-11:00 am

2 stops23h 20m

Islip Long Island

Sun 12/21

8:35 pm-9:06 pm

1 stop24h 31m

$330

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Sun 12/14

1:25 pm-11:50 pm

1 stop10h 25m

Islip Long Island

Sun 12/21

5:40 am-11:45 am

2 stops6h 05m

$343

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Mon 12/15

7:00 am-7:34 pm

2 stops36h 34m

Islip Long Island

Sun 12/21

8:35 pm-9:06 pm

1 stop24h 31m

$354

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Sun 12/14

7:00 am-1:45 pm

2 stops30h 45m

Islip Long Island

Sun 12/21

8:35 pm-9:06 pm

1 stop24h 31m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

  • Most accurate provider: When it comes to deals on Grand Rapids-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Grand Rapids-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Grand Rapids-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Grand Rapids-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Grand Rapids-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Grand Rapids to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Grand Rapids 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 Grand Rapids to Islip

What is the cheapest month to book a flight from Grand Rapids to Islip, New York?

Currently, May is the cheapest month in which you can book a flight from Grand Rapids to Islip, New York (average of $84). Flying from Grand Rapids to Islip, New York in November is currently the most expensive (average of $216). 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.

Related info for your journey

Find useful and relevant information for your journey from Grand Rapids to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Grand Rapids to Islip, New York?

    A quick flight from Grand Rapids to Islip, New York can take about 8h 10m. Southwest provides one of the quickest options available for as low as $301. The distance between Grand Rapids and Islip, New York is about 655 mi.

  • Can I find deals for flights from Grand Rapids to Islip that include hotel bookings?

    Yes. In addition to deals on Grand Rapids to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Grand Rapids to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Grand Rapids to Islip.

  • Can I find deals for business class flights from Grand Rapids to Islip?

    Yes. Cheapflights offers flight deals from Grand Rapids to Islip 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 Grand Rapids to Islip, New York?

    Currently, May is the cheapest month in which you can book a flight from Grand Rapids to Islip, New York (average of $84). Flying from Grand Rapids to Islip, New York in November is currently the most expensive (average of $216). 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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