$150+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — GRR
Jun 5 — Jun 121
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Grand Rapids with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Grand Rapids
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Best
Last-minute
One-way
Cheapest flights from Islip to Grand RapidsExplore 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 May 6, 2026.
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 May 6, 2026.
This Southwest deal was found by Cheapflights users on 5/5. 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 6/24:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/91:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/5![Southwest logo]()
$270
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/125:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Mon 6/155:25 am
GRR
- ISP
1 stop6h 25m
Southwest
Deal found 5/5![Southwest logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/2911:00 am
ISP
- GRR
1 stop26h 05m
Multiple Airlines
Fri 6/56:00 am
GRR
- ISP
1 stop28h 15m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/5. 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 5/316:05 am
ISP
- GRR
1 stop6h 45m
Southwest
Fri 6/52:45 pm
GRR
- ISP
2 stops8h 55m
Southwest
Deal found 5/5![Southwest logo]()
$334
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 5/194:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Sat 5/236:45 am
GRR
- ISP
2 stops9h 15m
Southwest
Deal found 5/4![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 5/1. 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 6/255:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/301:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/1![Southwest logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/257:49 pm
ISP
- GRR
2 stops40h 00m
Multiple Airlines
Tue 6/306:31 pm
GRR
- ISP
1 stop26h 26m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$410
Best flights from Islip to Grand RapidsDiscover carefully curated flight deals from Islip to Grand Rapids that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
Discover carefully curated flight deals from Islip to Grand Rapids that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 6, 2026.
This Southwest deal was found by Cheapflights users on 5/5. 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 6/24:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/91:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/5![Southwest logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/119:52 pm
ISP
- GRR
1 stop14h 01m
Frontier
Mon 6/158:29 pm
GRR
- ISP
2 stops19h 27m
Frontier
Deal found 5/5![Frontier logo]()
$421
This Southwest deal was found by Cheapflights users on 5/5. 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 5/316:05 am
ISP
- GRR
1 stop6h 45m
Southwest
Fri 6/52:45 pm
GRR
- ISP
1 stop8h 50m
Southwest
Deal found 5/5![Southwest logo]()
$319
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/123:05 pm
ISP
- GRR
2 stops8h 15m
Southwest
Mon 6/155:25 am
GRR
- ISP
1 stop6h 25m
Southwest
Deal found 5/5![Southwest logo]()
$383
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 5/194:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Sat 5/235:30 am
GRR
- ISP
1 stop10h 30m
Southwest
Deal found 5/4![Southwest logo]()
$400
This Southwest deal was found by Cheapflights users on 5/1. 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 6/255:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/301:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/1![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 5/1. 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.
Fri 6/125:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Sun 6/145:30 am
GRR
- ISP
1 stop6h 15m
Southwest
Deal found 5/1![Southwest logo]()
$434
Last-minute flights from Islip to Grand RapidsDiscover last-minute flight deals from Islip to Grand Rapids. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Grand Rapids. Data last updated May 6, 2026 and is based on user searches.
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 5/194:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Sat 5/235:30 am
GRR
- ISP
1 stop10h 30m
Southwest
Deal found 5/4![Southwest logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/2911:00 am
ISP
- GRR
1 stop26h 05m
Multiple Airlines
Fri 6/56:00 am
GRR
- ISP
1 stop28h 15m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/5. 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 5/316:05 am
ISP
- GRR
1 stop6h 45m
Southwest
Fri 6/52:45 pm
GRR
- ISP
2 stops8h 55m
Southwest
Deal found 5/5![Southwest logo]()
$334
This Southwest deal was found by Cheapflights users on 5/5. 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 6/24:10 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/91:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/5![Southwest logo]()
$270
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/125:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Mon 6/155:25 am
GRR
- ISP
1 stop6h 25m
Southwest
Deal found 5/5![Southwest logo]()
$299
This Southwest deal was found by Cheapflights users on 5/1. 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 6/255:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Tue 6/301:55 pm
GRR
- ISP
1 stop8h 40m
Southwest
Deal found 5/1![Southwest logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 6/257:49 pm
ISP
- GRR
2 stops40h 00m
Multiple Airlines
Tue 6/306:31 pm
GRR
- ISP
1 stop26h 26m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$410
One-way flights from Islip to Grand RapidsSearch for one-way flight options from Islip to Grand Rapids. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
Search for one-way flight options from Islip to Grand Rapids. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 6/125:50 pm
ISP
- GRR
1 stop6h 25m
Southwest
Deal found 5/5![Southwest logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/119:52 pm
ISP
- GRR
1 stop14h 01m
Frontier
Deal found 5/5![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/119:52 pm
ISP
- GRR
2 stops20h 37m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/129:52 pm
ISP
- GRR
3 stops22h 07m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$383
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 May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $270 (Southwest) |
One-way from | $150 (Southwest) |
Popular in | January |
Cheapest in | October |
Average price | $328 |
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 May 6, 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
Cheapest round-trip
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Tue 6/2
4:10 pm-10:35 pm
1 stop6h 25m
Grand Rapids Gerald R. Ford Intl
Tue 6/9
1:55 pm-10:35 pm
1 stop8h 40m
$270
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Sun 5/31
6:05 am-12:50 pm
1 stop6h 45m
Grand Rapids Gerald R. Ford Intl
Fri 6/5
2:45 pm-11:35 pm
1 stop8h 50m
$319
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Fri 6/12
3:05 pm-11:20 pm
2 stops8h 15m
Grand Rapids Gerald R. Ford Intl
Mon 6/15
5:25 am-11:50 am
1 stop6h 25m
$383
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Tue 5/19
4:10 pm-10:35 pm
1 stop6h 25m
Grand Rapids Gerald R. Ford Intl
Sat 5/23
5:30 am-4:00 pm
1 stop10h 30m
$400
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Thu 6/25
5:50 pm-12:15 am
1 stop6h 25m
Grand Rapids Gerald R. Ford Intl
Tue 6/30
1:55 pm-10:35 pm
1 stop8h 40m
$408
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Thu 6/11
9:52 pm-11:53 am
1 stop14h 01m
Grand Rapids Gerald R. Ford Intl
Mon 6/15
8:29 pm-3:56 pm
2 stops19h 27m
$421
Quickest round-trip
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Fri 6/12
5:50 pm-12:15 am
1 stop6h 25m
Grand Rapids Gerald R. Ford Intl
Sun 6/14
5:30 am-11:45 am
1 stop6h 15m
$434
Cheapest one-way
Quickest one-way
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Fri 6/12
5:50 pm-12:15 am
1 stop6h 25m
$150
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Thu 6/11
9:52 pm-6:29 pm
2 stops20h 37m
$236
IslipGrand Rapids
ISP - GRR
ISPGRR
Islip Long Island
Fri 6/12
9:52 pm-7:59 pm
3 stops22h 07m
$383
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ISP-GRR
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 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.
Traveling to a place near Grand Rapids?
Book flights to Grand Rapids if you plan to visit one of these locationsHolland
Wyoming
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