Flights Islip → Washington
ISP → DCA
How long is the flight from Islip to Washington?
The flight from Islip (ISP) to Washington (DCA) takes about 55 min. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
Route overview
The flight route connects Islip to Washington, with the destination airport having been in operation since 1938 and currently serving over 25 million passengers annually.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Islip (ISP) → Washington (DCA) route is operated by American Airlines. FlightGuard's average computed risk is 10.9/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Washington the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Islip the average ATFM delay is 5.5 minutes.
Heading to Washington: what to expect in this direction
Flying from Islip (ISP) to Washington (DCA) heads south-west for about 400 km, a flight time of roughly 55m.
Air-traffic congestion: departing Islip the average ATFM delay is 5.5 min (atfm); arriving into Washington it is 5.5 min (atfm).
Route facts
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| American Airlines (AA) | 79% | 6 min | 1.1% |
Airlines operating ISP-DCA
Airports
Frequently asked questions about ISP-DCA
The flight from Islip (ISP) to Washington (DCA) takes about 55 min. This is an estimate based on the distance between the two airports: the real time depends on the aircraft, wind and any stops.
Route-specific punctuality data isn't available yet. Check your flight on FlightGuard for a real-time analysis.
The cancellation rate varies by airline and season. Check your flight risk for an up-to-date estimate.
The route is operated by 1 airline: American Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Washington, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
