--- title: "Islip to Sebring cheap flights (ISP to SEF) - Expedia" description: "Cheap Flights from Islip (ISP) to Sebring (SEF) start at for one-way and for round trip. Earn your airline miles on top of our rewards!" canonical: "https://www.expedia.com/lp/flights/isp/sef/islip-to-sebring" language: en-US market: US currency: USD prices_as_of: 2026-11-14T08:23:09Z --- # Cheap Flights from Islip (ISP) to Sebring (SEF) ![A calm lake with a wooden dock, surrounded by tall grasses and trees.](https://images.trvl-media.com/place/9835/bb08c4ed-aeb8-4a17-95aa-f508d0362a7f.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ## Popular airlines from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional) [American Airlines](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [United](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Southwest Airlines](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) [Delta](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Frontier Airlines](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) [JetBlue Airways](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) [Alaska Airlines](https://www.expedia.com/Flights-Search?leg1=from:ISP,to:SEF,departure:11/28/2026TANYT&leg2=from:SEF,to:ISP,departure:12/5/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Book with confidence ### Islip to Sebring Flights #### The cheapest times to fly from Islip to Sebring 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 Sebring are during the month of . You can find some of the cheapest flights from Islip to Sebring with Expedia's search tool and vast selection of airlines. #### The best time to book a flight from Islip to Sebring Sunday is one of the best days to book for cheap flights from Islip to Sebring: 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 Sebring 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 Sebring 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 Islip to Sebring 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 Islip to Sebring 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 ### How much does a flight from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional) cost? Grab a cheap one-way flight or cheap return flight from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route. ### What is the cheapest month to fly from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional)? The cheapest month to fly from ISP to SEF is , when demand is low. Off-peak months are usually when airlines offer better prices between these airports. ### What is the cheapest airline that flies from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional)? Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from ISP to SEF. Then, sort your results by "Price (lowest to highest)" to pick up a great deal. ### How many flights per day from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional)? You'll need to hop on a flight with a layover when traveling from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip. ### What day of the week has the most flights from ISP to SEF? Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.\* However, this can vary depending on the season, carrier 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 Sebring, FL (SEF-Sebring Regional)? To avoid potential delays on the MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.\* *\*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 Sebring, FL (SEF-Sebring Regional) last-minute? Booking your ticket from ISP to SEF right before your journey is typically more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare. ### Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Sebring, FL (SEF-Sebring Regional)? Typically, it's possible to cancel or reschedule your ISP to SEF flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in [your itinerary](https://www.expedia.com/trips) to see what changes are possible and whether any costs are involved. You'll also find more information on our [Customer Service portal](https://www.expedia.com/helpcenter). ## Travel information | Origin airport | MacArthur Airport | | ------------------- | ----------------- | | Destination airport | Sebring, FL | | Distance | 1,033 miles away | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from Seattle (SEA) to Sebring (SEF)](https://www.expedia.com/lp/flights/sea/sef/seattle-to-sebring) - [Flights from Kingston (KIN) to Sebring (SEF)](https://www.expedia.com/lp/flights/kin/sef/kingston-to-sebring) - [Flights from New York (NYC) to Sebring (SEF)](https://www.expedia.com/lp/flights/nyc/sef/new-york-to-sebring) - [Flights from Cancun (CUN) to Sebring (SEF)](https://www.expedia.com/lp/flights/cun/sef/cancun-to-sebring) - [Flights from Pittsburgh (PIT) to Sebring (SEF)](https://www.expedia.com/lp/flights/pit/sef/pittsburgh-to-sebring) - [Flights from Providence (PVD) to Sebring (SEF)](https://www.expedia.com/lp/flights/pvd/sef/providence-to-sebring) - 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Airport (EWR) to Sebring (SEF)](https://www.expedia.com/lp/flights/ewr/sef/newark-liberty-intl-airport-to-sebring) - [Flights from Fort Myers (RSW) to Sebring (SEF)](https://www.expedia.com/lp/flights/rsw/sef/fort-myers-to-sebring) - [Flights from Sacramento (SMF) to Sebring (SEF)](https://www.expedia.com/lp/flights/smf/sef/sacramento-to-sebring) - [Flights from Sarasota (SRQ) to Sebring (SEF)](https://www.expedia.com/lp/flights/srq/sef/sarasota-to-sebring) - [Flights from New York (LGA) to Sebring (SEF)](https://www.expedia.com/lp/flights/lga/sef/new-york-to-sebring) - [Flights from Columbus (CMH) to Sebring (SEF)](https://www.expedia.com/lp/flights/cmh/sef/columbus-to-sebring) \*Available to One Key members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/isp/sef/islip-to-sebring es: https://www.expedia.com/es/lp/vuelos/isp/sef/islip-a-sebring en-CA: https://www.expedia.ca/lp/flights/isp/sef/islip-to-sebring ar: https://www.expedia.sa/lp/flights/isp/sef/islip-to-sebring en-US: https://www.expedia.com/lp/flights/isp/sef/islip-to-sebring ```