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$128+ Cheap flights from Grand Rapids to Islip, NY (GRR - ISP)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
GRR — ISP
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
1 adult, Economy
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Cheap 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 May 5, 2026.

This Southwest deal was found by Cheapflights users on 5/4. 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 6/75:30 am
GRR
-
ISP
1 stop6h 15m
Southwest
Thu 6/115:50 pm
ISP
-
GRR
1 stop6h 25m
Southwest
Deal found 5/4$299
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sat 8/15:30 am
GRR
-
ISP
1 stop6h 05m
Southwest
Tue 8/46:05 am
ISP
-
GRR
1 stop6h 55m
Southwest
Deal found 4/30$347
This Southwest deal was found by Cheapflights users on 5/4. 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.
Mon 6/18:25 am
GRR
-
ISP
1 stop3h 25m
Southwest
Mon 6/85:50 pm
ISP
-
GRR
1 stop6h 25m
Southwest
Deal found 5/4$373
This Southwest deal was found by Cheapflights users on 5/3. 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.
Thu 6/182:45 pm
GRR
-
ISP
1 stop8h 50m
Southwest
Sun 6/216:00 am
ISP
-
GRR
1 stop10h 10m
Southwest
Deal found 5/3$379
This Kiwi.com deal was found by Cheapflights users on 5/2. 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.
Fri 7/178:29 pm
GRR
-
ISP
2 stops13h 29m
Multiple Airlines
Mon 7/201:00 pm
ISP
-
GRR
1 stop5h 52m
Multiple Airlines
Deal found 5/2$415
This Southwest deal was found by Cheapflights users on 5/4. 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 6/305:30 am
GRR
-
ISP
1 stop6h 20m
Southwest
Tue 6/304:40 pm
ISP
-
GRR
1 stop6h 15m
Southwest
Deal found 5/4$416

Find 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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(Southwest)

One-way from

$128
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$289
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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One-way flight from Grand Rapids Gerald R. Ford Intl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in May 2026
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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 May 5, 2026.
Use the filters below to find and compare flights from Grand Rapids to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Sat 8/1

5:30 am-11:35 am

1 stop6h 05m

Islip Long Island

Tue 8/4

6:05 am-1:00 pm

1 stop6h 55m

$347
Quickest round-trip

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Mon 6/1

8:25 am-11:50 am

1 stop3h 25m

Islip Long Island

Mon 6/8

5:50 pm-12:15 am

1 stop6h 25m

$373

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Thu 6/18

2:45 pm-11:35 pm

1 stop8h 50m

Islip Long Island

Sun 6/21

6:00 am-4:10 pm

1 stop10h 10m

$379

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Fri 7/17

8:29 pm-9:58 am

2 stops13h 29m

Islip Long Island

Mon 7/20

1:00 pm-6:52 pm

1 stop5h 52m

$415

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Tue 6/30

5:30 am-11:50 am

1 stop6h 20m

Islip Long Island

Tue 6/30

4:40 pm-10:55 pm

1 stop6h 15m

$416

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Fri 7/17

2:45 pm-11:40 pm

2 stops8h 55m

Islip Long Island

Mon 7/20

3:05 pm-11:20 pm

2 stops8h 15m

$447
Cheapest one-way

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Tue 6/30

6:31 pm-8:57 pm

1 stop26h 26m

$128

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Sat 6/20

12:34 pm-8:57 pm

1 stop8h 23m

$201
Quickest one-way

Grand RapidsIslip

GRR - ISP

GRRISP

Grand Rapids Gerald R. Ford Intl

Tue 6/30

4:40 pm-10:35 pm

2 stops5h 55m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Sorted by cheapest first
  • 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.

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 6h 05m. Southwest provides one of the quickest options available for as low as $347. 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.

See more FAQs

Traveling to a place near Islip?

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