$479 Cheap Flights from Islip (ISP) to Redmond (RDM)

View $479 flight on Wed, Feb 18, 2026Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Redmond Municipal Airport (RDM)

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Cheap Flights from Islip to Redmond (ISP-RDM)

Prices were available within the past 7 days and start at $479 for one-way flights and $1,131 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Wed, Feb 18 - Sat, Feb 21
ISP
Islip
RDM
Redmond
$1,131 Roundtrip, found 3 days ago
$1,131
Roundtrip
found 3 days ago
Select Cape Air flight, departing Wed, Feb 18 from Islip to Redmond, returning Sat, Feb 21, priced at $1,131 found 3 days ago
Cape Air
Wed, Feb 18 - Sat, Feb 21
ISP
Islip
RDM
Redmond
$1,212 Roundtrip, found 3 days ago
$1,212
Roundtrip
found 3 days ago
Select Cape Air flight, departing Wed, Feb 18 from Islip to Redmond, returning Sat, Feb 21, priced at $1,212 found 3 days ago
Cape Air
Wed, Feb 18 - Sat, Feb 21
ISP
Islip
RDM
Redmond
$1,243 Roundtrip, found 3 days ago
$1,243
Roundtrip
found 3 days ago
Select Cape Air flight, departing Wed, Feb 18 from Islip to Redmond, returning Sat, Feb 21, priced at $1,243 found 3 days ago

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Robert's Field Airport (RDM) cost?
Lock in a cheap one-way flight from $479 or cheap return flight from $1,131 from MacArthur Airport (ISP) to Robert's Field Airport (RDM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to Robert's Field Airport (RDM)?
Planning your getaway for February may help you find better deals, as it's the cheapest month for flights between ISP and RDM. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Robert's Field Airport (RDM)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ISP to RDM flight.
How many flights per day from MacArthur Airport (ISP) to Robert's Field Airport (RDM)?
Direct flights from MacArthur Airport (ISP) to Robert's Field Airport (RDM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ISP to RDM?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Robert's Field Airport (RDM)?
To avoid possible delays on the MacArthur Airport (ISP) to Robert's Field Airport (RDM) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Robert's Field Airport (RDM) last-minute?
Last-minute fares from ISP to RDM are generally more expensive. To secure the lowest rates, start searching for flights early. That being said, if you can play around with your travel dates, it's possible to land a cheap fare just before your departure.
Is it cheaper to book an ISP to RDM flight and hotel package?
Compared with arranging hotels and flights separately, booking an ISP to RDM flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the hassle out of travel planning. Simply secure your flights and select from our wide range of hotels, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Robert's Field Airport (RDM)?
Usually, it's possible to reschedule or cancel your ISP to RDM flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
MacArthur
Destination airport
Robert's Field
Roundtrip price
$1,131
Distance
2423 mi

Book with confidence

Islip to Redmond Flights

The cheapest times to fly from Islip to Redmond

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 Islip to Redmond are during the month of February. You can find some of the cheapest flights from Islip to Redmond with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Redmond

Sunday is one of the best days to book for cheap flights from Islip to Redmond: 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 Islip to Redmond

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 Islip to Redmond in 2026. You can also book with separate airlines for your outbound and return journeys, from $479 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 Islip to Redmond 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 Islip to Redmond 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.

 

Islip to Redmond Flights

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*Available to One Key members.