Title: Cheap flights from Redmond to Islip (RDM to ISP) - Expedia.com ![Aerial South Shore Long Island During Sunset](https://images.trvl-media.com/place/1638/af7d1356-1b17-43db-b716-450cf420d6e9.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/1638/af7d1356-1b17-43db-b716-450cf420d6e9.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Redmond (RDM) to Islip (ISP) ## Popular airlines from Redmond Municipal Airport (RDM) to MacArthur Airport (ISP) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_F9.svg) Frontier Airlines [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/11/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Redmond to Islip (RDM-ISP) Prices were available within the past 7 days and start at for one-way flights and $1,247 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, Mar 4 - Sun, Mar 8 RDM Redmond ISP Islip $1,247 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/8/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1246.41&airProductToken=AQqNAQovCMGmARIEMzAxMxjxYCDvuAEotdyGAzD83IYDOFNAAFgBagJNQXIIU0g0T0FKTU4KLwjBpgESAzM1OBjvuAEgwZMBKLPdhgMw9N-GAzhTQAFYAWoCTUFyCFNINE9BSk1OCikIuZYBEgMyMTcYwZMBIMh8KNrghgMwsOGGAzhCQAFYAWoCRVJyA0JJUAqLAQopCLmWARIDMjEyGMh8IMGTASjniYcDMLyKhwM4U0AAWAFqAkVScgNTSVAKLgjBpgESAzI5ORjBkwEgkgEo4I2HAzDskIcDOFNAAVgBagJNQXIIU0g0T0FKTU4KLgjBpgESBDI0MjMYkgEg8WAomZGHAzDakYcDOFNAAVgBagJNQXIIU0g0T0FKTU4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Wed, Mar 4 - Sun, Mar 8 RDM Redmond ISP Islip $1,454 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/8/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1453.40&airProductToken=AQqNAQovCMGmARIEMzAxMxjxYCDvuAEotdyGAzD83IYDOFNAAFgBagJNQXIIU0g0T0FKTU4KLwjBpgESAzM1OBjvuAEgwZMBKLPdhgMw9N-GAzhTQAFYAWoCTUFyCFNINE9BSk1OCikIuZYBEgMyMTcYwZMBIMh8KNrghgMwsOGGAzhCQAFYAWoCRVJyA0JJUAqOAQopCLmWARIDMjEyGMh8IMGTASjniYcDMLyKhwM4U0AAWAFqAkVScgNTSVAKMAjBpgESBDEzMTkYwZMBIO-4ASj0jIcDMPSPhwM4U0ABWAFqAk1BcghTSDRPQVNNTgovCMGmARIEMzAxNBjvuAEg8WAo55CHAzCbkYcDOEtAAVgBagJNQXIIS0gwRUFTTU4SCggBEAEYASoCQVMYASIECAEQASgCKAMoBDAB) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Islip Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/8/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ISP MacArthur CheapestClosest 14 min [Flights from $1,247 ](https://www.expedia.com/Flights-Search?leg1=from:RDM,to:ISP,departure:3/4/2026TANYT&leg2=from:ISP,to:RDM,departure:3/8/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur) cost? ### What is the cheapest month to fly from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### Which airlines fly direct from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### What is the cheapest airline that flies from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### How do I find cheap flights from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### What is the best time to fly from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### What is the earliest flight from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### How long does it take to fly from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### Can you fly business or first class from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ### How do I earn miles on a Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur) flight with Expedia? ### Is it cheaper to buy a plane ticket from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur) at the last minute? ### Is it cheaper to book a Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur) flight and hotel package? ### Can I cancel or change the date of my flight from Redmond, OR (RDM-Robert's Field) to Islip, NY (ISP-MacArthur)? ## Travel information | Origin airport | Robert's Field | | ------------------- | -------------- | | Destination airport | MacArthur | | Roundtrip price | $1,246 | | Distance | 2423 mi | ## Book with confidence # Redmond to Islip Flights The cheapest times to fly from Redmond 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 Redmond to Islip are during the month of March. You can find some of the cheapest flights from Redmond to Islip with Expedia's search tool and vast selection of airlines. The best time to book a flight from Redmond to Islip Sunday is one of the best days to book for cheap flights from Redmond 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 Redmond 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 Redmond to Islip in 2026\. 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 Redmond 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](https://www.expedia.com/package-deals). Bundling together your Redmond 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\. 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