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Flights from Islip to Annapolis

No flights were found from Islip to Annapolis. Instead, check out the deals below for nearby routes from Islip to Washington D.C..

      • ISP 16:05
        16h 21m
        1 stop
        IAD 08:26
        Islip - Washington D.C. | Sat, Dec 13 | Frontier Airlines
        IAD 09:26
        14h 33m
        1 stop
        ISP 23:59
        Washington D.C. - Islip | Mon, Dec 15 | Frontier Airlines
        US$281 US$671
        57% OFF
        57% OFF
        US$671 US$281
      • ISP 12:25
        6h 53m
        1 stop
        DCA 19:18
        Islip - Washington D.C. | Tue, Feb 3 | Jetblue Airways
        DCA 12:15
        20h 40m
        1 stop
        ISP 08:55
        Washington D.C. - Islip | Wed, Feb 4 | Jetblue Airways
        US$313 US$671
        53% OFF
        53% OFF
        US$671 US$313
      • ISP 18:40
        26h 23m
        1 stop
        IAD 21:03
        Islip - Washington D.C. | Sat, Dec 20 | Frontier Airlines
        IAD 22:15
        14h 54m
        1 stop
        ISP 13:09
        Washington D.C. - Islip | Sat, Dec 27 | Frontier Airlines
        US$349 US$671
        48% OFF
        48% OFF
        US$671 US$349
      • ISP 12:25
        10h 6m
        1 stop
        DCA 22:31
        Islip - Washington D.C. | Wed, Jan 14 | Jetblue Airways
        DCA 18:30
        17h 5m
        1 stop
        ISP 11:35
        Washington D.C. - Islip | Tue, Jan 20 | Jetblue Airways
        US$389
        42% OFF
        US$671 US$389
      • ISP 13:27
        10h 2m
        1 stop
        DCA 23:29
        Islip - Washington D.C. | Fri, Dec 19 | Frontier Airlines
        DCA 06:40
        13h
        1 stop
        ISP 19:40
        Washington D.C. - Islip | Mon, Dec 22 | American Airlines
        US$427
        36% OFF
        US$671 US$427
      • ISP 06:00
        27h 48m
        1 stop
        IAD 09:48
        Islip - Washington D.C. | Thu, Dec 18 | Frontier Airlines
        IAD 21:58
        15h 11m
        1 stop
        ISP 13:09
        Washington D.C. - Islip | Sun, Dec 21 | Frontier Airlines
        US$483
        28% OFF
        US$671 US$483
      • ISP 10:46
        10h 17m
        1 stop
        IAD 21:03
        Islip - Washington D.C. | Mon, Dec 22 | Jetblue Airways
        IAD 21:58
        12h 3m
        1 stop
        ISP 10:01
        Washington D.C. - Islip | Fri, Dec 26 | Frontier Airlines
        US$541
        19% OFF
        US$671 US$541
      • ISP 12:40
        25h 54m
        1 stop
        DCA 14:34
        Islip - Washington D.C. | Fri, Jan 16 | Cape Air
        DCA 18:30
        17h 5m
        1 stop
        ISP 11:35
        Washington D.C. - Islip | Mon, Jan 19 | Jetblue Airways
        US$574
        15% OFF
        US$671 US$574
      • ISP 09:40
        8h 20m
        1 stop
        DCA 18:00
        Islip - Washington D.C. | Fri, Jan 16 | Jetblue Airways
        DCA 18:30
        17h 5m
        1 stop
        ISP 11:35
        Washington D.C. - Islip | Mon, Jan 19 | Jetblue Airways
        US$584
        13% OFF
        US$671 US$584
      • ISP 19:40
        13h 24m
        1 stop
        DCA 09:04
        Islip - Washington D.C. | Sun, Dec 21 | Jetblue Airways
        DCA 07:00
        27h 1m
        1 stop
        ISP 10:01
        Washington D.C. - Islip | Thu, Dec 25 | Jetblue Airways
        US$597
        11% OFF
        US$671 US$597
      • ISP 13:00
        17h 25m
        1 stop
        WAS Invalid Date
        Islip - Washington D.C. | Fri, Dec 12 | Normal Airline
        WAS 15:00
        6h
        Nonstop
        ISP 16:00
        Washington D.C. - Islip | Sun, Dec 14 | Normal Airline
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Displayed flight fares from Islip to Annapolis are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Islip to Annapolis

Check out flight details for routes from Islip to Washington D.C.—including distance, duration, and the best value month—to help plan your trip from Islip to Annapolis.

Cheapest one-way flight priceUS$68
Cheapest return ticket priceUS$281
Off-season for travelSeptember
Peak season for travelJuly
Flight distance397.38 km

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

Analyze price trends for flights from Islip to Washington D.C.—including distance, duration, and the most cost-effective month—to plan your journey from Islip to Annapolis.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 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 Annapolis, calculated over the upcoming 10 weeks.

Frequently Asked Questions

FAQs for flights from Islip to Annapolis when there’s no local airport. Departures and arrivals are through Islip to Washington D.C..

  • What are the cheapest flights from Islip to Washington D.C. (ISP-WAS)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$68 on Cheapest nonstop routes (e.g. ISP to IAD on Sat, Jan 10), while Frontier Airlines offers Cheapest nonstop round-trips from US$281 departing on Sat, Dec 13 and returning on Mon, Dec 15.
  • 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 Washington D.C. 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 Washington D.C., 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 Sat, Jan 10, with one-way flights priced at just US$68.
    · 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 Washington D.C. travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Washington D.C. 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 Washington D.C. on December 13, 2025 with Frontier Airlines, with prices starting at US$280.
  • The time difference between Washington D.C. 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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