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$172+ Cheap flights from Islip, NY to Grand Rapids (ISP - GRR)

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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — GRR
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap flight deals from Islip to Grand Rapids

Cheapest flights from Islip to Grand Rapids
Explore the most affordable flight options available from Islip to Grand Rapids. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 23, 2026.

This Expedia deal was found by Cheapflights users on 3/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/28:36 pm
ISP
-
GRR
1 stop22h 26m
Frontier
Mon 4/65:39 pm
GRR
-
ISP
1 stop6h 44m
Frontier
Deal found 3/18$544
This Frontier deal was found by Cheapflights users on 3/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:23 am
ISP
-
GRR
1 stop8h 39m
Frontier
Fri 4/102:51 pm
GRR
-
ISP
1 stop6h 47m
Frontier
Deal found 3/22$590
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/28:36 pm
ISP
-
GRR
2 stops23h 35m
Multiple Airlines
Mon 4/67:47 pm
GRR
-
ISP
1 stop21h 11m
Multiple Airlines
Deal found 3/18$606
This Southwest deal was found by Cheapflights users on 3/18. 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 4/22:00 pm
ISP
-
GRR
2 stops9h 35m
Southwest
Mon 4/612:40 pm
GRR
-
ISP
2 stops11h 15m
Southwest
Deal found 3/18$733

Find flight deals from Islip to Grand Rapids

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Grand Rapids (GRR). 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$544
(Expedia)

One-way from

$172
(Southwest)

Popular in

January

Cheapest in

September

Average price

$324
Provider with most accurate pricing for Islip Long Island-Grand Rapids Gerald R. Ford Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Grand Rapids Gerald R. Ford Intl flights.
Search Deals
From Islip Long Island to Grand Rapids Gerald R. Ford Intl
Search Deals
One-way flight from Islip Long Island to Grand Rapids Gerald R. Ford Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Grand Rapids 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 March 23, 2026.
Use the filters below to find and compare flights from Islip to Grand Rapids that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Thu 4/2

8:36 pm-7:02 pm

1 stop22h 26m

Grand Rapids Gerald R. Ford Intl

Mon 4/6

5:39 pm-12:23 am

1 stop6h 44m

$544
Quickest round-trip

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Mon 4/6

10:23 am-7:02 pm

1 stop8h 39m

Grand Rapids Gerald R. Ford Intl

Fri 4/10

2:51 pm-9:38 pm

1 stop6h 47m

$590

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Thu 4/2

8:36 pm-8:11 pm

2 stops23h 35m

Grand Rapids Gerald R. Ford Intl

Mon 4/6

7:47 pm-4:58 pm

1 stop21h 11m

$606

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Thu 4/2

2:00 pm-11:35 pm

2 stops9h 35m

Grand Rapids Gerald R. Ford Intl

Mon 4/6

12:40 pm-11:55 pm

2 stops11h 15m

$733
Cheapest one-way
Quickest one-way

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Thu 6/18

5:50 pm-12:15 am

1 stop6h 25m

$172

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Sun 7/19

6:00 am-4:10 pm

1 stop10h 10m

$234

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Sun 7/19

5:50 pm-6:52 pm

3 stops25h 02m

$334

IslipGrand Rapids

ISP - GRR

ISPGRR

Islip Long Island

Thu 6/18

10:48 am-11:24 pm

3 stops36h 36m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Sorted by cheapest first

Compare providers for flights from Islip to Grand Rapids

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Grand Rapids in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Grand Rapids flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Grand Rapids flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Grand Rapids flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Grand Rapids 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 Islip, New York-Grand Rapids 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 Islip to Grand Rapids

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

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

Currently, July is the cheapest month in which you can book a flight from Islip, New York to Grand Rapids (average of $55). Flying from Islip, New York to Grand Rapids in November is currently the most expensive (average of $223). 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 Islip to Grand Rapids. 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 Islip, New York to Grand Rapids?

    Departing from Islip, New York to Grand Rapids will take you 9h 35m. The distance between Islip, New York and Grand Rapids is about 655 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Islip, New York to Grand Rapids (average of $55). Flying from Islip, New York to Grand Rapids in November is currently the most expensive (average of $223). 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 Grand Rapids?

Book flights to Grand Rapids if you plan to visit one of these locations
Holland
Saugatuck
Wyoming

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