How far is Port Washington, NY from Islip, NY?
The driving distance from Port Washington, NY to Islip, NY is about 34.4 miles (55.3 km), with a travel time of about 00h 52m by car.
- The straight-line flight distance is about 26.3 miles (42.4 km).
- For a round trip, plan for roughly 01h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 52m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Hamlet on Long Island, New York, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Port Washington and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Washington and Islip.
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1
Start on Murray Avenue
2279 ft · 1 min · Murray Avenue
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2
At the end of the road, turn right onto Mackey Avenue
851 ft · 28 sec · Mackey Avenue
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3
Turn left onto Willowdale Avenue
1864 ft · 59 sec · Willowdale Avenue
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4
At the end of the road, turn right onto Port Washington Boulevard
2.3 mi · 4 min · Port Washington Boulevard
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5
Continue on Searingtown Road
1.3 mi · 2 min · Searingtown Road
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6
Turn left onto South Service Road
526 ft · 10 sec · South Service Road
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7
Take the ramp straight toward I 495 East: Riverhead
1168 ft · 30 sec
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8
Merge slight left onto Long Island Expressway
22.8 mi · 31 min · Long Island Expressway
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9
Take the exit slight right toward CR 67: Motor Parkway, Central Islip
1119 ft · 32 sec
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10
Turn straight onto Express Drive South
1230 ft · 27 sec · Express Drive South
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11
Turn right onto Motor Parkway
1.5 km · 2 min · Motor Parkway
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12
Turn right onto Joshuas Path
1.1 mi · 2 min · Joshuas Path
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13
Continue on Islip Avenue
4 mi · 7 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 Port Washington 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.
Long Island Expressway
Merge slight left onto Long Island Expressway
22.8 mi · 00h 31m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny leaving Port Washington and Partly Sunny near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Washington to Islip?
The road trip is about 34.4 miles (55.3 km) and usually takes 00h 52m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Melville is a useful midpoint, sitting about 17.1 miles from Port Washington and 17.2 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 26.3 miles (42.4 km), while the road route adds roughly 8.1 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 4:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.85 one way or $9.70 round trip. Estimated CO2 is about 10.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Port Washington and Partly Sunny near Islip.
Stop Ideas Near Melville
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 Melville.
Stamford Transportation Center
New Rochelle station
Yonkers station
Bridgeport
Flight Path Map
This map shows the direct air route between Port Washington and Islip. Straight-line distance: 26.36 mi (42.43 km).
#1 Port Washington
Hamlet in New York, US
| Population | 15,846 |
| Coordinates | 40.8256600, -73.6981900 |
| Altitude | 30 |
| 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: 55 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 08m |
| 40 mph (64.37 km/h) | 00h 51m |
| 50 mph (80.47 km/h) | 00h 41m |
| 60 mph (96.56 km/h) | 00h 34m |
| 70 mph (112.65 km/h) | 00h 29m |
| 80 mph (129 km/h) | 00h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $4.85 | $9.70 |
| Mid-grade | $4.48 | $5.42 | $10.84 |
| Premium | $4.86 | $5.88 | $11.76 |
| Diesel | $4.69 | $5.68 | $11.36 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.