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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 4:05 PM
        16h 21m
        1 stop
        IAD 8:26 AM
        Islip - Washington D.C. | Sat, Dec 13 | Frontier Airlines
        IAD 9:26 AM
        14h 33m
        1 stop
        ISP 11:59 PM
        Washington D.C. - Islip | Mon, Dec 15 | Frontier Airlines
        DKK 1,795 DKK 4,252
        57% OFF
        57% OFF
        DKK 4,252 DKK 1,795
      • ISP 12:25 PM
        6h 53m
        1 stop
        DCA 7:18 PM
        Islip - Washington D.C. | Tue, Feb 3 | Jetblue Airways
        DCA 12:15 PM
        20h 40m
        1 stop
        ISP 8:55 AM
        Washington D.C. - Islip | Wed, Feb 4 | Jetblue Airways
        DKK 2,002 DKK 4,252
        53% OFF
        53% OFF
        DKK 4,252 DKK 2,002
      • ISP 6:40 PM
        26h 23m
        1 stop
        IAD 9:03 PM
        Islip - Washington D.C. | Sat, Dec 20 | Frontier Airlines
        IAD 10:15 PM
        14h 54m
        1 stop
        ISP 1:09 PM
        Washington D.C. - Islip | Sat, Dec 27 | Frontier Airlines
        DKK 2,236 DKK 4,252
        47% OFF
        47% OFF
        DKK 4,252 DKK 2,236
      • ISP 12:25 PM
        10h 6m
        1 stop
        DCA 10:31 PM
        Islip - Washington D.C. | Wed, Jan 14 | Jetblue Airways
        DCA 6:30 PM
        17h 5m
        1 stop
        ISP 11:35 AM
        Washington D.C. - Islip | Tue, Jan 20 | Jetblue Airways
        DKK 2,488
        42% OFF
        DKK 4,252 DKK 2,488
      • ISP 1:27 PM
        10h 2m
        1 stop
        DCA 11:29 PM
        Islip - Washington D.C. | Fri, Dec 19 | Frontier Airlines
        DCA 6:40 AM
        13h
        1 stop
        ISP 7:40 PM
        Washington D.C. - Islip | Mon, Dec 22 | American Airlines
        DKK 2,733
        36% OFF
        DKK 4,252 DKK 2,733
      • ISP 6:00 AM
        27h 48m
        1 stop
        IAD 9:48 AM
        Islip - Washington D.C. | Thu, Dec 18 | Frontier Airlines
        IAD 9:58 PM
        15h 11m
        1 stop
        ISP 1:09 PM
        Washington D.C. - Islip | Sun, Dec 21 | Frontier Airlines
        DKK 3,094
        27% OFF
        DKK 4,252 DKK 3,094
      • ISP 10:46 AM
        10h 17m
        1 stop
        IAD 9:03 PM
        Islip - Washington D.C. | Mon, Dec 22 | Jetblue Airways
        IAD 9:58 PM
        12h 3m
        1 stop
        ISP 10:01 AM
        Washington D.C. - Islip | Fri, Dec 26 | Frontier Airlines
        DKK 3,462
        19% OFF
        DKK 4,252 DKK 3,462
      • ISP 12:40 PM
        25h 54m
        1 stop
        DCA 2:34 PM
        Islip - Washington D.C. | Fri, Jan 16 | Cape Air
        DCA 6:30 PM
        17h 5m
        1 stop
        ISP 11:35 AM
        Washington D.C. - Islip | Mon, Jan 19 | Jetblue Airways
        DKK 3,673
        14% OFF
        DKK 4,252 DKK 3,673
      • ISP 9:40 AM
        8h 20m
        1 stop
        DCA 6:00 PM
        Islip - Washington D.C. | Fri, Jan 16 | Jetblue Airways
        DCA 6:30 PM
        17h 5m
        1 stop
        ISP 11:35 AM
        Washington D.C. - Islip | Mon, Jan 19 | Jetblue Airways
        DKK 3,740
        12% OFF
        DKK 4,252 DKK 3,740
      • ISP 7:40 PM
        13h 24m
        1 stop
        DCA 9:04 AM
        Islip - Washington D.C. | Sun, Dec 21 | Jetblue Airways
        DCA 7:00 AM
        27h 1m
        1 stop
        ISP 10:01 AM
        Washington D.C. - Islip | Thu, Dec 25 | Jetblue Airways
        DKK 3,827
        10% OFF
        DKK 4,252 DKK 3,827
      • ISP 1:00 PM
        17h 25m
        1 stop
        WAS Invalid Date
        Islip - Washington D.C. | Sat, Dec 13 | Normal Airline
        WAS 3:00 PM
        6h
        Nonstop
        ISP 4:00 PM
        Washington D.C. - Islip | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights
      • ISP 3:34 PM
        23h 4m
        1 stop
        IAD 2:38 PM
        Islip - Washington D.C. | Sat, Jan 10 | Frontier Airlines
        DKK 432 DKK 1,054
        59% OFF
        59% OFF
        DKK 1,054 DKK 432
      • ISP 6:15 AM
        13h 52m
        1 stop
        DCA 8:07 PM
        Islip - Washington D.C. | Tue, Dec 16 | Frontier Airlines
        DKK 535 DKK 1,054
        49% OFF
        49% OFF
        DKK 1,054 DKK 535
      • ISP 4:40 PM
        25h 55m
        1 stop
        DCA 6:35 PM
        Islip - Washington D.C. | Sat, Dec 20 | Frontier Airlines
        DKK 743 DKK 1,054
        30% OFF
        30% OFF
        DKK 1,054 DKK 743
      • ISP 9:09 PM
        10h 26m
        1 stop
        IAD 7:35 AM
        Islip - Washington D.C. | Sat, Dec 13 | Frontier Airlines
        DKK 816
        23% OFF
        DKK 1,054 DKK 816
      • ISP 11:50 AM
        10h 49m
        1 stop
        DCA 10:39 PM
        Islip - Washington D.C. | Tue, Dec 16 | Jetblue Airways
        DKK 835
        21% OFF
        DKK 1,054 DKK 835
      • ISP 8:35 PM
        24h 28m
        1 stop
        IAD 9:03 PM
        Islip - Washington D.C. | Sun, Dec 21 | Frontier Airlines
        DKK 871
        17% OFF
        DKK 1,054 DKK 871
      • ISP 9:40 AM
        28h 58m
        1 stop
        IAD 2:38 PM
        Islip - Washington D.C. | Sat, Jan 10 | Jetblue Airways
        DKK 892
        15% OFF
        DKK 1,054 DKK 892
      • ISP 5:45 AM
        14h 11m
        1 stop
        DCA 7:56 PM
        Islip - Washington D.C. | Fri, Dec 19 | Frontier Airlines
        DKK 902
        14% OFF
        DKK 1,054 DKK 902
      • ISP 6:15 AM
        10h 45m
        1 stop
        DCA 5:00 PM
        Islip - Washington D.C. | Thu, Dec 11 | Frontier Airlines
        DKK 932
        12% OFF
        DKK 1,054 DKK 932
      • ISP 8:35 PM
        24h 28m
        1 stop
        IAD 9:03 PM
        Islip - Washington D.C. | Mon, Dec 22 | Frontier Airlines
        DKK 949
        10% OFF
        DKK 1,054 DKK 949
      • ISP 1:00 PM
        17h 25m
        1 stop
        WAS Invalid Date
        Islip - Washington D.C. | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

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 priceDKK 432
Cheapest round-trip ticket priceDKK 1,795
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 DKK 432 on Cheapest nonstop routes (e.g. ISP to IAD on Sat, Jan 10), while Frontier Airlines offers Cheapest nonstop round-trips from DKK 1,795 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 DKK 432.
    · 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 DKK 1,794.
  • 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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