Cheap American Airlines flights Wilmington (ILM) to Islip (ISP)

You’ll find cheap round-trip American Airlines flights from ILM to ISP by filtering your results from “Price (lowest to highest)” on Expedia. Or search for deals for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for round-trip or one-way flights to Islip in January or February. You could find cheaper fares with American Airlines during these off-season months.

Search for affordable American Airlines flights from Wilmington Intl. Airport (ILM) to MacArthur Airport (ISP) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To figure out if there’s a direct journey from ILM to ISP with American Airlines or other carriers, use our “Nonstop” filter when browsing for tickets.

To find the earliest departure from ILM to ISP with American Airlines, filter your search by “Early Morning” and “Morning.” Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Take an American Airlines flight from Wilmington Intl. Airport (ILM) to Islip, and you’ll likely arrive at MacArthur Airport (ISP). This is the airline’s main hub in this city.

Depending on your ticket type, a fee may apply if you change or cancel your booking more than 24 hours after it’s been confirmed. To secure flexible plane tickets, select our “No cancel fee” or “Changes included” filter while searching for flights. For additional information on canceling or changing your reservation, go to “Trips,” select your flight and tick “Manage Booking.”