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

IAD Airport Page →
264 mi airlines 0/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 38 1-stop flights Verified 2mos 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
Dulles to Islip
Connecting service available through multiple hubs.
264 mi 1h 37m nonstop 38 1-stop hubs

While no nonstop service exists between IAD and ISP, connecting options are available through 38 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
38
Hubs
~2h
Fastest
~26h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
789
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 Islip from Dulles

Nearby airports with service to Long Island MacArthur Airport.
Metric IAD→ISP BWI→ISP RIC→ISP
Distance from IAD – 45 mi 100 mi
Nonstop airlines 0 3 1
Weekly flights 0 27 2
Flight time 1h 37m 0h 45m 1h 16m
Departure OTP 100% – –
Baltimore (BWI) to Islip flights · Richmond (RIC) 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 connections38 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 TEB, MMU, ILG, HPN, FRG, LGA, ALB, BDL, PHL, ILM, USA, SYR, BUF, MDW, SAV, MKE, SDF, NAS, MSP, MYR, AUS, MSY, GCM, SLC, LAS, OAK, ORF, PBI, FLL, BOS, MCO, RDU, RIC, CHS, SRQ, TPA, RSW and VRB. 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 and RIC. 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

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