How far is Lloyd Harbor, NY from Islip, NY?
The driving distance from Lloyd Harbor, NY to Islip, NY is about 23.6 miles (38 km), with a travel time of about 00h 40m by car.
- The straight-line flight distance is about 17.7 miles (28.5 km).
- For a round trip, plan for roughly 01h 20m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM EDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 40m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census-designated place in Suffolk County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Lloyd Harbor and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lloyd Harbor and Islip.
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1
Start on School Lane
2361 ft · 2 min · School Lane
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2
At the end of the road, turn left onto West Neck Road
2.7 mi · 7 min · West Neck Road
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3
Turn left onto Main Street
1.5 km · 2 min · Main Street
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4
Turn slight right onto Park Avenue
4.1 mi · 9 min · Park Avenue
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5
Continue on Deer Park Road
1.4 mi · 3 min · Deer Park Road
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6
Take the ramp right toward N East: Hauppauge
1257 ft · 30 sec
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7
Merge slight left onto Northern State Parkway
3 mi · 4 min · Northern State Parkway
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8
Take the exit slight right toward SA South: South Shore
1423 ft · 35 sec
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9
Merge slight left onto Sagtikos State Parkway
4.7 mi · 5 min · Sagtikos State Parkway
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10
Take the exit slight left toward SO East: East Islip
2886 ft · 1 min
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11
Merge slight right onto Heckscher State Parkway
3.3 mi · 4 min · Heckscher State Parkway
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12
Take the exit slight right toward NY 111 South: Islip
1446 ft · 35 sec
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13
Turn straight onto Islip Avenue
1.7 mi · 4 min · Islip Avenue
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14
At the end of the road, turn right onto Main Street
865 ft · 15 sec · Main Street
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15
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Lloyd Harbor and Islip.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Sagtikos State Parkway
Merge slight left onto Sagtikos State Parkway
4.68 mi · 00h 05m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Showers And Thunderstorms leaving Lloyd Harbor and Rain Showers Likely near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lloyd Harbor to Islip?
The road trip is about 23.6 miles (38 km) and usually takes 00h 40m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Commack is a useful midpoint, sitting about 11.8 miles from Lloyd Harbor and 11.8 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 17.7 miles (28.5 km), while the road route adds roughly 5.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM EDT. If you want a more comfortable same-day return, try to leave by 7:10 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.33 one way or $6.65 round trip. Estimated CO2 is about 7.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Lloyd Harbor and Rain Showers Likely near Islip.
Stop Ideas Near Commack
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Town of Babylon History Museum at Old Town Hall
Babylon Town Hall Annex
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Commack.
Stamford Transportation Center
Bridgeport
New Rochelle station
Yonkers station
Flight Path Map
This map shows the direct air route between Lloyd Harbor and Islip. Straight-line distance: 17.72 mi (28.52 km).
#1 Lloyd Harbor
Village in Suffolk County, New York, USA
| Population | 3,650 |
| Coordinates | 40.9034300, -73.4598400 |
| Altitude | 42 |
| Country | United States |
#2 Islip
This Long Island community is situated on the south shore of Suffolk County, New York, at an elevation of 13 feet.
| Population | 322,328 |
| Coordinates | 40.7298200, -73.2103900 |
| Altitude | 4 |
| Country | United States |
End: Main Street (-73.210382, 40.729789)
Estimated Travel Time
Distance: 38 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 47m |
| 40 mph (64.37 km/h) | 00h 35m |
| 50 mph (80.47 km/h) | 00h 28m |
| 60 mph (96.56 km/h) | 00h 23m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $3.33 | $6.65 |
| Mid-grade | $4.48 | $3.72 | $7.44 |
| Premium | $4.86 | $4.03 | $8.07 |
| Diesel | $4.69 | $3.90 | $7.79 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in New York · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.