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 (IAD) 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
Best option
Washington DC
Islip - Long Island
Outbound
11/09/25
1 Stopover (TPA)
F92953, F93324
10h 15min
Return
12/07/25
1 Stopover (MCO)
F91237, F94812
10h 26min
Frontier Airlines
$232
Washington DC
Islip - Long Island
Outbound
11/09/25
1 Stopover (TPA)
F92953, F93324
10h 15min
Return
12/07/25
1 Stopover (VRB)
MX0585, MX0641
07h 55min
Frontier Airlines ?
$360
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 $ 231,97
Distance 425 km
Departure airport Airport Washington DC - Dulles International Airport, DC (IAD)
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