$141+ Cheap flights from Islip, NY to Appleton (ISP - ATW)
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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — ATW
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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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
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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 Appleton
Cheapest
Best
Last-minute
One-way
Cheapest flights from Islip to AppletonExplore the most affordable flight options available from Islip to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Islip to Appleton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 9/276:48 pm -
2 stops23h 18m
Thu 10/13:19 pm -
1 stop24h 39m
Deal found 9/6![Multiple Airlines logo]()
$618
Best flights from Islip to AppletonDiscover carefully curated flight deals from Islip to Appleton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Islip to Appleton that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 9/276:48 pm -
1 stop18h 49m
Thu 10/13:19 pm -
1 stop24h 39m
Deal found 9/6![Multiple Airlines logo]()
$743
Last-minute flights from Islip to AppletonDiscover last-minute flight deals from Islip to Appleton. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Appleton. Data last updated September 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 9/276:48 pm -
2 stops23h 18m
Thu 10/13:19 pm -
1 stop24h 39m
Deal found 9/6![Multiple Airlines logo]()
$618
One-way flights from Islip to AppletonSearch for one-way flight options from Islip to Appleton. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Islip to Appleton. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 9/2312:00 pm -
2 stops36h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$141
Find flight deals from Islip to Appleton
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Appleton (ATW). 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 September 10, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $618 (Kiwi.com) |
One-way from | $141 (Kiwi.com) |
Popular in | December |
Cheapest in | July |
Average price | $550 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Appleton 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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Islip to Appleton that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IslipAppleton
ISP Islip Long Island - ATW Appleton Intl
ISPATW
Islip Long Island
Wed 9/23
12:00 pm-11:05 pm
2 stops36h 05m
Appleton Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$141
IslipAppleton
ISP Islip Long Island - ATW Appleton Intl
ISPATW
Islip Long Island
Sun 9/27
6:48 pm-12:37 pm
1 stop18h 49m
Appleton Intl
Thu 10/1
3:19 pm-4:58 pm
1 stop24h 39m
$743
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Islip, New York-Appleton flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Islip, New York-Appleton flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Islip, New York-Appleton flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Islip, New York-Appleton flights, Cheapflights users trust Expedia the most. Expedia 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-Appleton 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 Appleton
Have a flexible travel schedule? Discover the best time to fly to Appleton from Islip with our price prediction graph.
ISP-ATW
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 Appleton. 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 Appleton?
Book flights to Appleton if you plan to visit one of these locationsNeenah
Plymouth
Fond du Lac
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