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

IAD Airport Page →
264 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 12 1-stop flights Verified 2w ago
Also flown by charter / private operators.
Nonstop Charter / private 1-Stop 2-Stop Hide separate tickets Hide overnight Hide codeshares
  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.

✦ 1-Stop connections via 10 hubs
BOS Boston 5h 1m AVAZCM → 9K Boston (BOS) to Islip flights
RIC Richmond 5h 15m ACAVCM → MX Richmond (RIC) to Islip flights
MCO Orlando 5h 45m ADAVAZ → B6F9WN Orlando (MCO) to Islip flights
ORF Norfolk 5h 50m AVCMOS → MX Norfolk (ORF) to Islip flights
RDU Raleigh/Durham 6h 5m ACAVAZ → MX Raleigh/Durham (RDU) to Islip flights
TPA Tampa 6h 5m AVAZCM → F9WN Tampa (TPA) to Islip flights
DJT DJT 6h 30m UA → WN DJT (DJT) to Islip flights
MYR Myrtle Beach 9h 8m UA → MX Myrtle Beach (MYR) to Islip flights
CHS Charleston 10h 34m ACCMLJY → MX Charleston (CHS) to Islip flights
FLL Fort Lauderdale 14h 37m CMF9UA → B6 Fort Lauderdale (FLL) to Islip flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Dulles to Islip
Connecting service available through multiple hubs.
1 Airlines 264 mi 0h 54m nonstop

IAD–ISP had nonstop service, last on the schedule in August 2026. There's no nonstop on it right now, so today you'd fly it with one stop. The connecting options below are sorted by layover. Nonstop, it's about 264 miles in 0h 54m.

Also explore Browse available seat maps IAD Routes ISP Routes IAD Live Flights ISP Live Flights IAD Delays ISP Delays
All flights from Islip (ISP) Islip to Dulles flights
Carriers on this route

Airline Landscape

Carriers that operated nonstop IAD–ISP service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
TWY TWY 1 – – 100% – –
Alliance coverage
Unaffiliated: TWY (1 flights/wk, 100%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for IAD to ISP.
1-STOP
One-Stop Connections
12
Hubs
~5h
Fastest
~26h
Longest
BOS ~5h 1m RIC ~5h 15m MCO ~5h 45m ORF ~5h 50m RDU ~6h 5m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
637
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
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
100%
Return
ISP → IAD
0%
Frequent delays expected. Consider flexible booking.
Departing
0%
Arriving
67%
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 RIC→ISP
Distance from IAD – 45 mi 100 mi
Nonstop airlines – 4 1
Weekly flights – 46 2
Flight time 0h 54m 1h 10m 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 0h 54m gate to gate.
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 time0h 54m
Time difference0 hours
Airlines (nonstop)1
1-stop connectionsAvailable
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 about 0h 54m gate to gate. The route covers 264 miles.
1 airline operated the nonstop from IAD to ISP. The last scheduled nonstop was in August 2026. There's no nonstop right now, so today you'd fly it with one stop. See the connection options above, ranked by layover.
Not right now. The last scheduled nonstop was in August 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 0h 54m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Boston Logan, Richmond and Orlando.
On a single ticket, yes. Your bags are checked through to ISP and move between planes without you. On two separate tickets you collect your bags at the connecting airport and recheck them, so build in extra layover time.
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) had nonstop service, last on the schedule in August 2026. The nonstop is dormant right now, so the way to fly it today is one connection, and the options above are sorted by layover.

IAD to ISP Flight Duration and Schedule

Nonstop flight time from IAD to ISP is about 0 hours 54 minutes gate to gate. The route covers a distance of 264 miles (425 km).

Connecting Options and Alternatives

1-stop connecting options are also available, commonly via Boston Logan, Richmond and Orlando. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Baltimore (BWI) and Richmond (RIC).