Flights from Washington DC to Islip Long Island

Our cheapest offers for flights from Washington DC to Islip Long Island

Here you can compare cheap flights from Washington DC (DCA) to Islip Long Island (ISP) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Islip Long Island. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Washington DC
Islip - Long Island
Outbound
11/09/25
2 Stopovers (EWR, BOS)
UA3493, UA0375, 9K0213
06h 24min
Return
12/07/25
2 Stopovers (BOS, EWR)
9K0210, UA1882, UA3507
08h 52min
United Airlines, Cape Air ?
$752
Best option
Washington DC
Islip - Long Island
Outbound
11/09/25
1 Stopover (BOS)
AA2634, 9K0213
04h 49min
Return
12/07/25
1 Stopover (BOS)
9K0210, AA3155
05h 13min
American Airlines, Cape Air ?
$779
Washington DC
Islip - Long Island
Outbound
09/25/25
2 Stopovers (JFK, MCO)
B60254, B60183, B60546
09h 04min
Return
10/05/25
1 Stopover (BOS)
9K0212, B61955
06h 07min
JetBlue Airways ?
$983
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: Washington DC - Islip - Long Island

Roundtrip from $ 751,20
Return flight duration min. 07:50
Distance 400 km
Departure airport Airport Washington DC - Ronald Reagan National Airport, VA (DCA)
Arrival airport Airport Islip - Long Island MacArthur Airport,NY (ISP)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Islip - Long Island
Flight destinations with a similar price