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

ISP Airport Page →
264 mi airlines charter/private 1/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 13 1-stop flights Verified 1w ago
Also flown by charter / private operators: NetJets Aviation.
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 4h 2m 9K → AVAZCM Boston (BOS) to Dulles flights
RDU Raleigh/Durham 4h 18m MX → ACAVAZ Raleigh/Durham (RDU) to Dulles flights
MCO Orlando 5h 47m B6F9WN → AVAZCM Orlando (MCO) to Dulles flights
TPA Tampa 6h 10m F9WN → AVAZCM Tampa (TPA) to Dulles flights
FLL Fort Lauderdale 7h 34m B6 → ADCMF9 Fort Lauderdale (FLL) to Dulles flights
ORF Norfolk 11h 44m MX → ACAVCM Norfolk (ORF) to Dulles flights
RIC Richmond 12h 44m MX → ACAVCM Richmond (RIC) to Dulles flights
MYR Myrtle Beach 17h 47m MX → UA Myrtle Beach (MYR) to Dulles flights
RSW Fort Myers 19h 24m MX → UA Fort Myers (RSW) to Dulles flights
DJT DJT 19h 56m B6WN → ACUAVJA DJT (DJT) to Dulles flights
✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Islip to Dulles
Connecting service available through multiple hubs.
1 Airlines 264 mi 1h 8m nonstop

ISP–IAD had nonstop service from Contour Airlines, last on the schedule in September 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 1h 8m.

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

Airline Landscape

Carriers that operated nonstop ISP–IAD service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
LF Contour Airlines 0 – – 100% – –
Alliance coverage
Unaffiliated: LF (0 flights/wk, 0%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.
Connections

Connection Landscape

1-stop and 2-stop options for ISP to IAD.
1-STOP
One-Stop Connections
13
Hubs
~4h
Fastest
~21h
Longest
BOS ~4h 2m RDU ~4h 18m MCO ~5h 47m TPA ~6h 10m STL ~6h 56m
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
614
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
ISP → IAD
100%
Generally reliable. Most flights run on time.
Departing
100%
Arriving
81%
Return
IAD → ISP
59%
Frequent delays expected. Consider flexible booking.
Departing
59%
Arriving
34%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. ISP delays → IAD delays →
Alternatives

Other ways to reach Dulles from Islip

Nearby airports with service to Washington Dulles International Airport.
Metric ISP→IAD HVN→IAD HPN→IAD
Distance from ISP – 34 mi 37 mi
Nonstop airlines – 5 28
Weekly flights – 1 2
Flight time 1h 8m 1h 3m 0h 45m
Departure OTP 100% – –
New Haven (HVN) to Dulles flights · White Plains (HPN) to Dulles flights · New York (JFK) to Dulles flights
Airports within 200 miles of ISP with service to Washington Dulles International Airport.
Know before you go

Travel Essentials

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

When it's 6:00 PM in Islip, it's 6:00 PM in Dulles.
Distance & Flight Time
264 mi / 425 km
Nonstop flight time is approximately 1h 8m gate to gate.
Getting from IAD

Silver Line Metro runs from Washington Dulles Airport station to Metro Center in about 65 minutes (~$7). The route bypasses I-66 and I-495 congestion entirely. Washington Flyer coach also runs to Wiehle-Reston East station ($6, 15 min) for Metro connection.Taxis and ride-shares to downtown DC cost $55–80 and take 35–55 minutes depending on traffic. Car rental facilities are on-site. Dulles is 27 miles west of the Capitol; it is farther than either DCA or BWI from central DC.

Dulles Climate

Humid continental climate. Summers are hot and muggy (30–36°C) with frequent afternoon thunderstorms that cause delays June through August. Winters bring cold temperatures (−3 to 5°C) with snow and ice. The Virginia suburbs accumulate more snow than downtown DC, and ice storms are the primary disruption risk.

Dulles sits at higher elevation in Virginia's piedmont and sees more winter precipitation than DCA. Spring and fall are variable. Snowfall is possible into April. Thunderstorms begin from April through May.

Check current weather forecasts before travel.
Facts

ISP–IAD Quick Facts

Key statistics for the Islip to Dulles route.
Route details
Distance264 mi / 425 km
Flight time1h 8m
Time difference0 hours
Airlines (nonstop)1
1-stop connectionsAvailable
Origin: ISP
Full nameLong Island MacArthur Airport
IATA / ICAOISP / KISP
TimezoneAmerica/New_York
Passengers/yr1.4M
Elevation99 ft / 30 m
Destination: IAD
Full nameWashington Dulles International Airport
IATA / ICAOIAD / KIAD
TimezoneAmerica/New_York
Passengers/yr26.0M
Elevation312 ft / 95 m
FAQ

Frequently Asked Questions

Common questions about ISP to IAD flights.
Nonstop flights from Long Island MacArthur Airport to Washington Dulles International Airport take about 1h 8m gate to gate. The route covers 264 miles.
1 airline operated the nonstop from ISP to IAD: Contour Airlines. The last scheduled nonstop was in September 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 September 2026. You can still fly it with one stop, and the connecting options above are sorted by layover. Nonstop, the hop took about 1h 8m.
Yes, 1-stop connections are available, ranked by layover time. Common connecting points include Boston Logan, Raleigh-Durham and Orlando.
On a single ticket, yes. Your bags are checked through to IAD 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 IAD to ISP are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include HVN, HPN and JFK. 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 IAD

Long Island MacArthur Airport (ISP) and Washington Dulles International Airport (IAD) had nonstop service from Contour Airlines, last on the schedule in September 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.

ISP to IAD Flight Duration and Schedule

Nonstop flight time from ISP to IAD is about 1 hours 8 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, Raleigh-Durham and Orlando. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include New Haven (HVN), White Plains (HPN) and New York (JFK).