Islip to Washington (ISP–DCA) — Airlines, Schedules & Connections

ISP Airport Page →
248 mi airlines 0/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 31 1-stop flights Verified 3w ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Islip to Washington
Connecting service available through multiple hubs.
248 mi 1h 6m nonstop 31 1-stop hubs

While no nonstop service exists between ISP and DCA, connecting options are available through 31 hubs.

Also explore ISP Routes DCA Routes ISP Live Flights DCA Live Flights ISP Delays DCA Delays
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for ISP to DCA.
1-STOP
One-Stop Connections
31
Hubs
~2h
Fastest
~25h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
677
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Alternatives

Other ways to reach Washington from Islip

Nearby airports with service to Ronald Reagan Washington National Airport.
Metric ISP→DCA HPN→DCA JFK→DCA
Distance from ISP – 37 mi 37 mi
Nonstop airlines 0 3 23
Weekly flights 0 31 331
Flight time 1h 6m 1h 20m 1h 24m
Departure OTP 100% – –
White Plains (HPN) to Washington flights · New York (JFK) to Washington flights · New York (LGA) to Washington flights
Airports within 200 miles of ISP with service to Ronald Reagan Washington National Airport.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
0h
Washington is 0 hours the same as Islip.
ISP: EDT · DCA: EDT

When it's 6:00 PM in Islip, it's 6:00 PM in Washington.
Distance & Flight Time
248 mi / 400 km
Nonstop flight time is approximately 1h 6m.
Getting from DCA

The Metro station is inside Terminal B/C with covered walkway access; Terminal A requires a short outdoor walk or shuttle. Yellow and Blue line trains run to downtown DC in 15–25 minutes for $2.25–$3.85.

Taxis and Uber/Lyft operate from designated pick-up zones outside each terminal; fares to downtown run $15–30. DCA serves the National Mall area and is well-positioned for the U.S. Capitol, Pentagon, and downtown offices. International arrivals clear customs at DCA only for pre-cleared flights; most international traffic uses IAD (Dulles). Rental cars are in a consolidated facility accessible by shuttle.

Washington Climate

Humid subtropical climate. Summers (June–August) are hot and very humid at 29–34°C with frequent afternoon thunderstorms causing ground stops and airspace flow programs. The summer storm season is the primary operational disruption risk at DCA. Spring and autumn are transitional with variable conditions and occasional severe thunderstorm outbreaks.

Winters (December–February) bring cold temperatures (−2 to 7°C) with occasional snowstorms that disproportionately affect the DC area due to limited snow-removal infrastructure. Even moderate snowfall (5–10 cm) can shut regional airports for hours. Pack layers for winter; the region's storm response is notoriously inconsistent.

Check current weather forecasts before travel.
Facts

ISP–DCA Quick Facts

Key statistics for the Islip to Washington route.
Route details
Distance248 mi / 400 km
Flight time1h 6m
Time difference0 hours
Airlines (nonstop)0
1-stop connections31 hubs
Origin: ISP
Full nameLong Island MacArthur Airport
IATA / ICAOISP / KISP
TimezoneAmerica/New_York
Passengers/yr1.4M
Elevation99 ft / 30 m
Destination: DCA
Full nameRonald Reagan Washington National Airport
IATA / ICAODCA / KDCA
TimezoneAmerica/New_York
Passengers/yr25.5M
Elevation15 ft / 5 m
FAQ

Frequently Asked Questions

Common questions about ISP to DCA flights.
Nonstop flights from Long Island MacArthur Airport to Ronald Reagan Washington National Airport take approximately 1h 6m. The route covers 248 miles.
Yes, 1-stop connections are available through MMU, IAD, TEB, BWI, HPN, PVD, JFK, CLE, BUF, YYZ, CLT, RIC, MDW, NAS, SRQ, MIA, MEM, MYR, AUS, LAS, PDX, BOS, ORF, RDU, FLL, CHS, MCO, TPA, RSW, ILM and PBI. These options provide additional schedule flexibility.
Nearby alternatives include HPN, JFK and LGA. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from ISP to DCA

Long Island MacArthur Airport (ISP) and Ronald Reagan Washington National Airport (DCA) are connected through multiple connecting hub airports.

ISP to DCA Flight Duration and Schedule

Nonstop flight time from ISP to DCA ranges from 1 hours 6 minutes. The route covers a distance of 248 miles (400 km).

Connecting Options and Alternatives

31 one-stop connections are available, with the fastest taking approximately 2 hours via MMU. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include White Plains (HPN), New York (JFK) and New York (LGA).