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Flights from Islip to Cincinnati

Find flight deals from Islip to Cincinnati for the next 3 months. Book one way flights from US$105 or round trip flights from US$300.

      • ISP 12:20
        22h 32m
        1 stop
        CVG 10:52
        Islip - Cincinnati | Thu, Dec 18 | Frontier Airlines
        CVG 05:05
        8h 4m
        1 stop
        ISP 13:09
        Cincinnati - Islip | Sun, Dec 21 | Frontier Airlines
        US$300 US$1,670
        82% OFF
        82% OFF
        US$1,670 US$300
      • ISP 06:00
        11h 44m
        1 stop
        CVG 17:44
        Islip - Cincinnati | Wed, Dec 17 | Frontier Airlines
        CVG 05:05
        8h 4m
        1 stop
        ISP 13:09
        Cincinnati - Islip | Sun, Dec 21 | Frontier Airlines
        US$331 US$1,670
        80% OFF
        80% OFF
        US$1,670 US$331
      • ISP 20:29
        21h 15m
        1 stop
        CVG 17:44
        Islip - Cincinnati | Tue, Dec 9 | Frontier Airlines
        CVG 08:46
        6h 24m
        1 stop
        ISP 15:10
        Cincinnati - Islip | Sat, Dec 13 | Frontier Airlines
        US$385 US$1,670
        77% OFF
        77% OFF
        US$1,670 US$385
      • ISP 17:27
        17h 25m
        1 stop
        CVG 10:52
        Islip - Cincinnati | Wed, Dec 31 | Frontier Airlines
        CVG 11:57
        25h 12m
        1 stop
        ISP 13:09
        Cincinnati - Islip | Sat, Jan 3 | Frontier Airlines
        US$492
        71% OFF
        US$1,670 US$492
      • ISP 06:00
        14h 10m
        1 stop
        CVG 20:10
        Islip - Cincinnati | Thu, Dec 25 | Frontier Airlines
        CVG 06:30
        17h 29m
        1 stop
        ISP 23:59
        Cincinnati - Islip | Fri, Dec 26 | Allegiant Air
        US$670
        60% OFF
        US$1,670 US$670
      • ISP 10:46
        14h 20m
        1 stop
        CVG 01:06
        Islip - Cincinnati | Wed, Dec 31 | Jetblue Airways
        CVG 11:57
        22h 4m
        1 stop
        ISP 10:01
        Cincinnati - Islip | Sat, Jan 3 | Frontier Airlines
        US$700
        57% OFF
        US$1,670 US$700
      • ISP 12:30
        6h 44m
        1 stop
        CVG 19:14
        Islip - Cincinnati | Thu, Dec 25 | Cape Air
        CVG 19:55
        15h 10m
        1 stop
        ISP 11:05
        Cincinnati - Islip | Fri, Dec 26 | Delta Air Lines
        US$1,169
        30% OFF
        US$1,670 US$1,169
      • ISP 13:00
        17h 25m
        1 stop
        CVG Invalid Date
        Islip - Cincinnati | Thu, Dec 11 | Normal Airline
        CVG 15:00
        6h
        Nonstop
        ISP 16:00
        Cincinnati - Islip | Sat, Dec 13 | Normal Airline
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Displayed flight fares from Islip to Cincinnati are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Islip to Cincinnati

The distance between Islip and Cincinnati is approximately 983.57 km. Based on Trip.com's data travel demand peaks in August. The off-season for travel is September.

Cheapest one-way flight priceUS$105
Cheapest return ticket priceUS$300
Off-season for travelSeptember
Peak season for travelAugust
Flight distance983.57 km

When is the cheapest time to fly from Islip to Cincinnati?

The cheapest time for Islip to Cincinnati flights: Jan 11 to Jan 18 — one way flight prices from US$105.

Cheapest flights
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  • 714
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  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Islip to Cincinnati, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • What are the cheapest flights from Islip to Cincinnati (ISP-CVG)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$105 on Cheapest nonstop routes (e.g. ISP to CVG on Tue, Jan 13), while Frontier Airlines offers Cheapest nonstop round-trips from US$300 departing on Thu, Dec 18 and returning on Sun, Dec 21.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Islip to Cincinnati is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Islip to Cincinnati, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Jan 13, with one-way flights priced at just US$105.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Cincinnati travel is around August.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Cincinnati is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Islip to Cincinnati on December 18, 2025 with Frontier Airlines, with prices starting at US$299.
  • The time difference between Cincinnati and Islip is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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