How far is Port Jefferson Station, NY from Islip, NY?
The driving distance from Port Jefferson Station, NY to Islip, NY is about 18.3 miles (29.4 km), with a travel time of about 00h 29m by car.
- The straight-line flight distance is about 16 miles (25.7 km).
- For a round trip, plan for roughly 00h 59m 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 29m.
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.
City in Smithtown, New York, United States of America
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 Jefferson Station and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Jefferson Station and Islip.
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1
Start on Patchogue Road
25 m · 5 sec · Patchogue Road
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2
Turn right onto Nesconset Highway
5.9 mi · 9 min · Nesconset Highway
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3
Continue on Smithtown Bypass
4.5 mi · 7 min · Smithtown Bypass
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4
Take the exit straight toward Route 111, Islip, Smithtown
116 m · 17 sec
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5
Turn left onto Hauppauge Boulevard
2424 ft · 46 sec · Hauppauge Boulevard
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6
At the end of the road, turn right onto Townline Road
128 m · 9 sec · Townline Road
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7
Keep slight left to continue on Wheeler Road
1.6 mi · 3 min · Wheeler Road
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8
Keep slight right to continue on Joshuas Path
1.5 mi · 2 min · Joshuas Path
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9
Continue on Islip Avenue
4 mi · 7 min · Islip Avenue
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10
At the end of the road, turn right onto Main Street
865 ft · 15 sec · Main Street
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11
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Port Jefferson Station 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.
Nesconset Highway
Turn right onto Nesconset Highway
5.88 mi · 00h 09m
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.
Partly Sunny leaving Port Jefferson Station 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 Jefferson Station to Islip?
The road trip is about 18.3 miles (29.4 km) and usually takes 00h 29m 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?
Village of the Branch is a useful midpoint, sitting about 9.1 miles from Port Jefferson Station and 9.1 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 16 miles (25.7 km), while the road route adds roughly 2.3 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 7:30 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.57 one way or $5.13 round trip. Estimated CO2 is about 5.7 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Port Jefferson Station and Partly Sunny near Islip.
Stop Ideas Near Village of the Branch
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Town of Babylon History Museum at Old Town Hall
Brookhaven Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Village of the Branch.
Bridgeport
Stamford Transportation Center
New Rochelle station
Union Station
Flight Path Map
This map shows the direct air route between Port Jefferson Station and Islip. Straight-line distance: 15.98 mi (25.71 km).
#1 Port Jefferson Station
Census-designated place in Suffolk County, New York
| Population | 7,838 |
| Coordinates | 40.9253800, -73.0473300 |
| Altitude | 54 |
| 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: 29 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 36m |
| 40 mph (64.37 km/h) | 00h 27m |
| 50 mph (80.47 km/h) | 00h 21m |
| 60 mph (96.56 km/h) | 00h 18m |
| 70 mph (112.65 km/h) | 00h 15m |
| 80 mph (129 km/h) | 00h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $2.57 | $5.13 |
| Mid-grade | $4.48 | $2.87 | $5.74 |
| Premium | $4.86 | $3.11 | $6.22 |
| Diesel | $4.69 | $3.00 | $6.01 |
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.