Title: Carlsbad to Islip cheap flights from $483 (CLD 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) # $483 Cheap Flights from Carlsbad (CLD) to Islip (ISP) [View $483 flight on Sat, Nov 14, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:CLD,to:ISP,departure:11/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:482.20&airProductToken=AQqSAQoxCMGCARIENDIyNhjiGiDvuQEo3pedAzCymJ0DOFFAAFgBagRNQUlOcghRVkFaWk5NMwoyCMGCARIEMjcwMRjvuQEgwZMBKPmYnQMwl5udAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMKKQi5lgESAzIxMRjBkwEgyHwog52dAzDenZ0DOEJAAVgBagJFUnIDQklQEgwIARABGAEqAkFBMgAYASIECAEQASgCKAMoBDAB) ## Popular airlines from Carlsbad, CA (CLD-McClellan-Palomar) 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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&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:CLD,to:ISP,departure:4/17/2026TANYT&leg2=from:ISP,to:CLD,departure:4/24/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) ## Cheap Flights from Carlsbad to Islip (CLD-ISP) Prices were available within the past 7 days and start at $483 for one-way flights and $947 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $947 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:946.41&airProductToken=AQqRAQoxCMGCARIENDAyMhjiGiDvuQEorpGVAzD-kZUDOFNAAFgBagRNQUlOcghTVkFaWk5NMwoxCMGCARIDODgwGO-5ASDBkwEo5ZKVAzCalZUDOFNAAVgBagRNQUlOcghTVkFaWk5NMwopCLmWARIDMjE3GMGTASDIfCjblZUDMLGWlQM4QkABWAFqAkVScgNCSVAKkgEKKQi5lgESAzIxMhjIfCDBkwEox-CVAzCc4ZUDOEJAAFgBagJFUnIDQklQCjIIwYIBEgQxMjQ1GMGTASDvuQEo8-OVAzDH5pUDOE5AAVgBagRNQUlOcghOV0ZXVU5NNQoxCMGCARIENDE1NBjvuQEg4hoon-eVAzDo55UDOE5AAVgBagRNQUlOcghOV0ZXVU5NNRIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $975 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:974.41&airProductToken=AQqRAQoxCMGCARIENDAyMhjiGiDvuQEorpGVAzD-kZUDOFNAAFgBagRNQUlOcghTVkFaWk5NMwoxCMGCARIDODgwGO-5ASDBkwEo5ZKVAzCalZUDOFNAAVgBagRNQUlOcghTVkFaWk5NMwopCLmWARIDMjE3GMGTASDIfCjblZUDMLGWlQM4QkABWAFqAkVScgNCSVAKkgEKKQi5lgESAzIxMBjIfCDBkwEord-VAzCL4JUDOEJAAFgBagJFUnIDQklQCjIIwYIBEgQxNjUzGMGTASDvuQEovuCVAzCQ45UDOFFAAVgBagRNQUlOcghRVkFaWk5NMwoxCMGCARIEMzYwORjvuQEg4hoo3eOVAzC05JUDOFFAAVgBagRNQUlOcghRVkFaWk5NMxIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $985 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:984.40&airProductToken=AQqRAQoxCMGCARIENDAyMhjiGiDvuQEorpGVAzD-kZUDOFNAAFgBagRNQUlOcghTVkFaWk5NMwoxCMGCARIDODgwGO-5ASDBkwEo5ZKVAzCalZUDOFNAAVgBagRNQUlOcghTVkFaWk5NMwopCLmWARIDMjE3GMGTASDIfCjblZUDMLGWlQM4QkABWAFqAkVScgNCSVAKkgEKKQi5lgESAzIxMhjIfCDBkwEox-CVAzCc4ZUDOEJAAFgBagJFUnIDQklQCjIIwYIBEgQxMjQ1GMGTASDvuQEo8-OVAzDH5pUDOFNAAVgBagRNQUlOcghTVkFaWk5NMwoxCMGCARIENDE1NBjvuQEg4hoon-eVAzDo55UDOFNAAVgBagRNQUlOcghTVkFaWk5NMxIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $997 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:996.41&airProductToken=AQqSAQoxCMGCARIEMzc2NxjiGiDvuQEowpeVAzCWmJUDOFFAAFgBagRNQUlOcghRVkFaWk5NMwoyCMGCARIEMjcwMRjvuQEgwZMBKPuYlQMwpZuVAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMKKQi5lgESAzIxMRjBkwEgyHwo6pyVAzDJnZUDOFNAAVgBagJFUnIDU0lQCpIBCikIuZYBEgMyMTQYyHwgwZMBKN7hlQMwvOKVAzhCQABYAWoCRVJyA0JJUAoyCMGCARIEMTI0NRjBkwEg77kBKPPjlQMwx-aVAzhOQAFYAWoETUFJTnIITldGV1VOTTUKMQjBggESBDQxNTQY77kBIOIaKJ_nlQMw6OeVAzhOQAFYAWoETUFJTnIITldGV1VOTTUSDAgBEAEYASoCQUEyABgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, Jun 4 - Tue, Jun 9 CLD Carlsbad ISP Islip $1,003 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:6/4/2026TANYT&leg2=from:ISP,to:CLD,departure:6/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1002.41&airProductToken=AQqSAQoxCMGCARIENDIwNBjiGiDvuQEoteyOAzCG7Y4DOE5AAFgBagRNQUlOcghOVkFJWlNNMwoyCMGCARIEMjcwMRjvuQEgwZMBKLjujgMw4fCOAzhOQAFYAWoETUFJTnIITlZBSVpTTTMKKQi5lgESAzIxMRjBkwEgyHwo6vKOAzDJ844DOEtAAVgBagJFUnIDS0lQCpIBCikIuZYBEgMyMTQYyHwgwZMBKJ6hjwMw_KGPAzhCQABYAWoCRVJyA0JJUAoyCMGCARIEMzMxMxjBkwEg77kBKLGjjwMwjKaPAzhRQAFYAWoETUFJTnIIUVZBSlpTTTUKMQjBggESBDQxNTQY77kBIOIaKN-mjwMwqKePAzhRQAFYAWoETUFJTnIIUVZBSlpTTTUSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $1,022 Roundtrip found 1 day ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1021.41&airProductToken=AQqRAQoxCMGCARIENDAyMhjiGiDvuQEorpGVAzD-kZUDOFNAAFgBagRNQUlOcghTVkFaWk5NMwoxCMGCARIDODgwGO-5ASDBkwEo5ZKVAzCalZUDOFNAAVgBagRNQUlOcghTVkFaWk5NMwopCLmWARIDMjE3GMGTASDIfCjblZUDMLGWlQM4QkABWAFqAkVScgNCSVAKkgEKKQi5lgESAzIxMBjIfCDBkwEord-VAzCL4JUDOEJAAFgBagJFUnIDQklQCjIIwYIBEgQxNjUzGMGTASDvuQEovuCVAzCQ45UDOEdAAVgBagRNQUlOcghHMEZXVU5NMwoxCMGCARIEMzYwORjvuQEg4hoo3eOVAzC05JUDOEdAAVgBagRNQUlOcghHMEZXVU5NMxIMCAEQARgBKgJBQTIAGAEiBAgBEAEoAigDKAQwAQ) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $1,025 Roundtrip found 2 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1024.40&airProductToken=AQqSAQoxCMGCARIEMzc2NxjiGiDvuQEowpeVAzCWmJUDOFFAAFgBagRNQUlOcghRVkFaWk5NMwoyCMGCARIEMjcwMRjvuQEgwZMBKPuYlQMwpZuVAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMKKQi5lgESAzIxMRjBkwEgyHwo6pyVAzDJnZUDOFNAAVgBagJFUnIDU0lQCpIBCikIuZYBEgMyMTAYyHwgwZMBKK3flQMwi-CVAzhCQABYAWoCRVJyA0JJUAoyCMGCARIEMTY1MxjBkwEg77kBKL7glQMwkOOVAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMKMQjBggESBDM2MDkY77kBIOIaKN3jlQMwtOSVAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMSDAgBEAEYASoCQUEyABgBIgQIARABKAIoAygEMAE) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Thu, May 28 - Sat, May 30 CLD Carlsbad ISP Islip $1,030 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:5/28/2026TANYT&leg2=from:ISP,to:CLD,departure:5/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1029.40&airProductToken=AQqSAQoxCMGCARIENDAyMRjiGiDvuQEo1p6OAzCon44DOFFAAFgBagRNQUlOcghRVkFKWlNNNQoyCMGCARIEMjcwMRjvuQEgwZMBKNifjgMwgaKOAzhRQAFYAWoETUFJTnIIUVZBSlpTTTUKKQi5lgESAzIxMRjBkwEgyHwoiqSOAzDppI4DOEtAAVgBagJFUnIDS0lQCpIBCikIuZYBEgMyMTQYyHwgwZMBKN6wjgMwvLGOAzhCQABYAWoCRVJyA0JJUAoyCMGCARIEMzMxMxjBkwEg77kBKPGyjgMwzLWOAzhTQAFYAWoETUFJTnIIU1VBSlpTTTMKMQjBggESBDQxNTQY77kBIOIaKJ-2jgMw6LaOAzhTQAFYAWoETUFJTnIIU1VBSlpTTTMSCggBEAEYASoCQUEYASIECAEQASgCKAMoBDAB) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Aug 15 - Sat, Aug 22 CLD Carlsbad ISP Islip $1,035 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:8/15/2026TANYT&leg2=from:ISP,to:CLD,departure:8/22/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1034.40&airProductToken=AQqSAQoxCMGCARIEMzc2NxjiGiDvuQEowpeVAzCWmJUDOFFAAFgBagRNQUlOcghRVkFaWk5NMwoyCMGCARIEMjcwMRjvuQEgwZMBKPuYlQMwpZuVAzhRQAFYAWoETUFJTnIIUVZBWlpOTTMKKQi5lgESAzIxMRjBkwEgyHwo6pyVAzDJnZUDOFNAAVgBagJFUnIDU0lQCpIBCikIuZYBEgMyMTAYyHwgwZMBKK3flQMwi-CVAzhCQABYAWoCRVJyA0JJUAoyCMGCARIEMTA1NxjBkwEg77kBKP3hlQMw0eSVAzhTQAFYAWoETUFJTnIIU1ZBWlpOTTMKMQjBggESBDQwMjEY77kBIOIaKKvllQMw-OWVAzhTQAFYAWoETUFJTnIIU1ZBWlpOTTMSDAgBEAEYASoCQUEyABgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Wed, May 6 - Wed, May 13 CLD Carlsbad ISP Islip $1,128 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:CLD,to:ISP,departure:5/6/2026TANYT&leg2=from:ISP,to:CLD,departure:5/13/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1127.41&airProductToken=AQqWAQozCNWCARIENTUxNRjiGiCDaSi1pIwDMNOljAM4S0AAWAFqB0VDT05PTVlyCEtBQTJBUURTCjQI1YIBEgQyNjU2GINpIMGTASiHqYwDMPyqjAM4S0ABWAFqB0VDT05PTVlyCEtBRzJQRkROCikIuZYBEgMyMTEYwZMBIMh8KMqsjAMwqa2MAzhLQAFYAWoCRVJyA0tJUAqWAQopCLmWARIDMjEyGMh8IMGTASin8IwDMPzwjAM4QkAAWAFqAkVScgNCSVAKNAjVggESBDIyOTcYwZMBIINpKNzyjAMw_PSMAzhUQAFYAWoHRUNPTk9NWXIIVEFHMkFLRFMKMwjVggESBDU1MjkYg2kg4hoo1fWMAzD59owDOFRAAVgBagdFQ09OT01ZcghUQUcyQUtEUxIMCAEQARgBKgJVQTIAGAEiBAgBEAEoAigDKAQwAQ) ## Frequently asked questions ### How much does a flight from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur) cost? ### What is the cheapest month to fly from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### Which airlines fly direct from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### What is the cheapest airline that flies from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### How do I find cheap flights from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### What is the best time to fly from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### What is the earliest flight from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### How long does it take to fly from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### Can you fly business or first class from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ### How do I earn miles on a Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur) flight with Expedia? ### Is it cheaper to buy a plane ticket from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur) at the last minute? ### Is it cheaper to book a Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur) flight and hotel package? ### Can I cancel or change the date of my flight from Carlsbad, CA (CLD-McClellan-Palomar) to Islip, NY (ISP-MacArthur)? ## Travel information | Origin airport | McClellan-Palomar | | ------------------- | ----------------- | | Destination airport | MacArthur | | Roundtrip price | $946 | | Distance | 2468 mi | ## Book with confidence # Carlsbad to Islip Flights The cheapest times to fly from Carlsbad 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 Carlsbad to Islip are during the month of August. You can find some of the cheapest flights from Carlsbad to Islip with Expedia's search tool and vast selection of airlines. The best time to book a flight from Carlsbad to Islip Sunday is one of the best days to book for cheap flights from Carlsbad 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 Carlsbad 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 Carlsbad to Islip in 2026\. You can also book with separate airlines for your outbound and return journeys, from $483 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 Carlsbad 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 Carlsbad 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. \*Flight schedules are subject to change. \*Available to One Key members. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rentals - [New York Hotels ](https://www.expedia.com/New-York-Hotels.d178293.Travel-Guide-Hotels) - [Long Island Hotels ](https://www.expedia.com/Long-Island-Hotels.d602887.Travel-Guide-Hotels) - [Hotels near Bohemia Historical Society Museum ](https://www.expedia.com/Bohemia-Historical-Society-Museum-Hotels.0-l553248621554204748-0.Travel-Guide-Filter-Hotels) - [Cheap Hotels in Long Island ](https://www.expedia.com/Long-Island-Hotels-Cheap-Hotels.0-0-d602887-tCheapHotels.Travel-Guide-Filter-Hotels) - [Hotels near Ronkonkoma Station ](https://www.expedia.com/Ronkonkoma-Station-Hotels.d6186166.Travel-Guide-Hotels) - [Motels in Ronkonkoma Station ](https://www.expedia.com/Ronkonkoma-Station-Motels.d6186166-aaMotels.Travel-Guide-Accommodation) - [Oceanfront Hotels in Long Island ](https://www.expedia.com/Long-Island-Hotels-Oceanfront-Hotels.0-0-d602887-tOceanfrontHotels.Travel-Guide-Filter-Hotels) - 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