Cheap Flights from Killeen (GRK) to Islip (ISP)

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Flights from Killeen (GRK) to Islip (ISP)
Origin airport
Killeen-Fort Hood Regional
Destination airport
MacArthur
Distance
1530 mi

Killeen to Islip Flights

The cheapest times to fly from Killeen to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Killeen to Islip are during the month of . You can find some of the cheapest flights from Killeen to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Killeen to Islip

Sunday is one of the best days to book for cheap flights from Killeen to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Killeen to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Killeen to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Killeen to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Killeen to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

Is it cheaper to buy a plane ticket from Killeen-Fort Hood Regional Airport (GRK) to MacArthur Airport (ISP) last minute?
Booking your flight from GRK to ISP last minute could save you a nice sum if you luck out and find a terrific deal. However, tickets don’t usually get cheaper closer to the departure date. If you wait around, flights could also be booked up or the best seats gone (hello, middle seat!). If you’d rather play it safe, book well ahead of the date you want to leave. In fact, you can find some of the biggest deals up to a year in advance. If your preferred airline hasn’t released its fares yet, check back regularly as deals are updated on Expedia constantly.
What airports do you fly into for Islip from Killeen?
MacArthur Airport (ISP), Tweed - New Haven Regional Airport (HVN) and Westchester County Airport (HPN) are your choices when jetting from Killeen to Islip. Roughly 7 mi northeast of downtown Islip, MacArthur Airport (ISP) is the city’s main hub. Consider things such as flight schedules and the distance to your hotel before choosing an airport. Touro College School of Health Sciences and Bayard Cutting Arboretum State Park are two leading attractions to explore when you reach your destination.
Can I change the date of my flight from GRK to MacArthur Airport (ISP)?
Quickly and easily make changes to your Killeen-Fort Hood Regional Airport (GRK) to MacArthur Airport flight through the Expedia Trips portal. Before you make any amendments, check out the conditions and rules in your itinerary to learn what you’re able to do and if fees apply for changes. Some airlines charge a change fee per person, in addition to any difference in fares. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also check out our Customer Service portal for more advice and to connect with our Virtual Agent.

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