How far is Westbury, NY from Islip, NY?
The driving distance from Westbury, NY to Islip, NY is about 24.2 miles (38.9 km), with a travel time of about 00h 36m by car.
- The straight-line flight distance is about 19.8 miles (31.9 km).
- For a round trip, plan for roughly 01h 12m 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 36m.
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 Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Westbury and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Westbury and Islip.
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1
Start on Post Avenue
16 m · 4 sec · Post Avenue
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2
Turn right onto Maple Avenue
1977 ft · 46 sec · Maple Avenue
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3
Turn left onto Union Avenue
983 ft · 24 sec · Union Avenue
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4
Turn right onto Grand Boulevard
1.3 km · 2 min · Grand Boulevard
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5
Turn slight right onto Belmont Place
83 m · 16 sec · Belmont Place
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6
Turn left onto Old Country Road
1.1 km · 1 min · Old Country Road
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7
Turn right onto Carman Avenue
122 m · 14 sec · Carman Avenue
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8
Take the ramp left toward W South: Jones Beach
114 m · 9 sec
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9
Merge slight left onto Wantagh State Parkway
4.3 mi · 6 min · Wantagh State Parkway
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10
Take the exit slight left toward SO East: Eastern Long Island
1864 ft · 46 sec
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11
Merge slight left onto Southern State Parkway
12.4 mi · 15 min · Southern State Parkway
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12
Keep slight left to continue on Southern State Parkway
1072 ft · 16 sec · Southern State Parkway
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13
Take the exit slight right toward Bay Shore Road South, Bay Shore
1044 ft · 30 sec
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14
Turn straight onto Bay Shore Road
2667 ft · 1 min · Bay Shore Road
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15
Continue on Howells Road
1845 ft · 46 sec · Howells Road
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16
Turn straight onto Sunrise Highway
104 m · 7 sec · Sunrise Highway
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17
Keep slight right to continue on Howells Road
3115 ft · 2 min · Howells Road
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18
Continue on Roosevelt Street
1248 ft · 25 sec · Roosevelt Street
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19
Continue on 3rd Avenue
1 km · 1 min · 3rd Avenue
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20
At the end of the road, turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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21
Continue on Montauk Highway
1014 ft · 17 sec · Montauk Highway
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22
Continue on Main Street
1.2 km · 1 min · Main Street
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23
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Westbury 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.
Southern State Parkway
Merge slight left onto Southern State Parkway
12.4 mi · 00h 15m
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 Likely leaving Westbury 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 Westbury to Islip?
The road trip is about 24.2 miles (38.9 km) and usually takes 00h 36m 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?
North Amityville is a useful midpoint, sitting about 12.1 miles from Westbury and 12.1 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 19.8 miles (31.9 km), while the road route adds roughly 4.4 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 7:18 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.41 one way or $6.82 round trip. Estimated CO2 is about 7.6 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Westbury and Rain Showers Likely near Islip.
Stop Ideas Near North Amityville
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 North Amityville.
New Rochelle station
Stamford Transportation Center
Pennsylvania Station
Yonkers station
Flight Path Map
This map shows the direct air route between Westbury and Islip. Straight-line distance: 19.83 mi (31.91 km).
#1 Westbury
Village in Nassau County, New York
| Population | 15,379 |
| Coordinates | 40.7556600, -73.5876300 |
| Altitude | 31 |
| 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: Islip (-73.21039, 40.72982)
Estimated Travel Time
Distance: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 48m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 28m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 20m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $3.41 | $6.82 |
| Mid-grade | $4.48 | $3.81 | $7.62 |
| Premium | $4.86 | $4.13 | $8.26 |
| Diesel | $4.69 | $3.99 | $7.98 |
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.