Dulles to Islip (IAD–ISP) — Airlines, Schedules & Connections

IAD Airport Page →
264 mi airlines 0/wk
On-time Some delays Frequent delays
Flight Schedule 0 flights Verified 2w ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP
✧ 2-STOP Loading...
Dulles to Islip
Connecting service available through multiple hubs.
264 mi 1h 37m nonstop 22 1-stop hubs

While no nonstop service exists between IAD and ISP, connecting options are available through 22 hubs.

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

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for IAD to ISP.
1-STOP
One-Stop Connections
22
Hubs
~2h
Fastest
~23h
Longest
FRG ~2h 32m ILG ~2h 41m BWI ~3h 7m ILM ~4h 10m MDW ~4h 56m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
700
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.
Reliability

On-Time Performance

What to expect at each end of your journey.
Outbound
IAD → ISP
50%
Frequent delays expected. Consider flexible booking.
Departing
50%
Arriving
100%
Return
ISP → IAD
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
86%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. IAD delays → ISP delays →
Alternatives

Other ways to reach Islip from Dulles

Nearby airports with service to Long Island MacArthur Airport.
Metric IAD→ISP BWI→ISP
Distance from IAD – 45 mi
Nonstop airlines 0 1
Weekly flights 0 47
Flight time 1h 37m 1h 2m
Departure OTP 50% –
Baltimore (BWI) to Islip flights
Airports within 200 miles of IAD with service to Long Island MacArthur Airport.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Dulles, it's 6:00 PM in Islip.
Distance & Flight Time
264 mi / 425 km
Nonstop flight time is approximately 1h 37m.
Getting to IAD

WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).

Facts

IAD–ISP Quick Facts

Key statistics for the Dulles to Islip route.
Route details
Distance264 mi / 425 km
Flight time1h 37m
Time difference0 hours
Airlines (nonstop)0
1-stop connections22 hubs
Origin: IAD
Full nameWashington Dulles International Airport
IATA / ICAOIAD / KIAD
TimezoneAmerica/New_York
Passengers/yr26.0M
Elevation312 ft / 95 m
Destination: ISP
Full nameLong Island MacArthur Airport
IATA / ICAOISP / KISP
TimezoneAmerica/New_York
Passengers/yr1.4M
Elevation99 ft / 30 m
FAQ

Frequently Asked Questions

Common questions about IAD to ISP flights.
Nonstop flights from Washington Dulles International Airport to Long Island MacArthur Airport take approximately 1h 37m. The route covers 264 miles.
Yes, 1-stop connections are available through FRG, ILG, BWI, ILM, MDW, SAV, SDF, NAS, PHL, GCM, SLC, BOS, ORF, CHS, FLL, SRQ, RDU, PBI, MCO, ALB, TPA and RSW. These options provide additional schedule flexibility.
Yes, return flights from ISP to IAD are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include BWI. 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 IAD to ISP

Washington Dulles International Airport (IAD) and Long Island MacArthur Airport (ISP) are connected through multiple connecting hub airports.

IAD to ISP Flight Duration and Schedule

Nonstop flight time from IAD to ISP ranges from 1 hours 37 minutes. The route covers a distance of 264 miles (425 km).

Connecting Options and Alternatives

22 one-stop connections are available, with the fastest taking approximately 2 hours via FRG. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Baltimore (BWI).