Drive Time
29m
Distance
18.2 mi
29 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
Photo: Renan Tagliaferro
The drive from Port Jefferson Station, NY to Islip, NY covers 18.2 miles and takes about 29m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Nesconset Highway, Smithtown Bypass, Islip Avenue for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 5.9 miles on Nesconset Highway. At current regular gas prices, budget about $2.96 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
0 planned breaks
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
9.1 miles from Port Jefferson Station, NY
A natural place for your longest stop of the day , about 14m into the drive .
Expect a 29m drive with frequent turns across 18.2 miles of local and secondary roads.
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. You will hit about 7 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near NY 347 / Nesconset Highway.
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 18.2 miles you will encounter 7 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (NY 347 / Nesconset Highway): Lane positioning matters here; at 10.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 10.4 miles (NY 111 / Hauppauge Boulevard): Navigation decision point.
These are the spots where you need to pay the most attention. Preview them before you drive.
Turn right onto NY 347 / Nesconset Highway
Lane positioning matters here
Take the exit toward Route 111, Islip, Smithtown
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Turn left onto NY 111 / Hauppauge Boulevard
Navigation decision point
Keep slight left at fork onto NY 111 / Wheeler Road
Highway fork - watch signs carefully. Lane positioning matters here
At end of road, turn right onto NY 27A / Main Street
Lane positioning matters here
On the drive from Port Jefferson Station, NY to Islip, NY, road signs begin pointing toward Smithtown along the way.
Smithtown
| Road | Distance | Duration |
|---|---|---|
| Nesconset Highway | 5.9 mi | 8m |
| Smithtown Bypass | 4.5 mi | 7m |
| Islip Avenue | 4 mi | 7m |
| Wheeler Road | 1.6 mi | 2m |
| Joshuas Path | 1.5 mi | 2m |
| Hauppauge Boulevard | 0.5 mi | <1m |
| Main Street | 0.2 mi | <1m |
| Townline Road | <0.1 mi | <1m |
Step-by-step road directions between Port Jefferson Station, NY and Islip, NY.
Start on NY 112
Turn right onto NY 347
Continue on NY 347
Take the exit
Turn left onto NY 111
At end of road, turn right onto NY 111; CR 76
Keep slight left at fork onto NY 111
Keep slight right at fork onto NY 111
Continue on NY 111
At end of road, turn right onto NY 27A
Arrive at destination
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 18.2 miles or 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 9.1 miles or 14m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 24m
Traffic, exits, and arrival timing usually matter more near Islip, NY than in the middle of the route.
Open the route before leaving Port Jefferson Station, NY so your first major turns are already loaded.
Leave with enough water and a charging cable within reach, not packed away.
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Port Jefferson Station, NY
This is one driving day of about 18.2 miles and 29m.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 9.1 mi from Port Jefferson Station, NY · 14m into the drive
Mid-route town
Meal stop
9 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
A short stop after about 18.2 miles helps settle the day before fatigue starts building.
The midpoint is around 9.1 miles from Port Jefferson Station, NY, which is a good place for a longer meal and fuel stop.
The final approach into Islip, NY usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Islip, NY.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$2.96 one way
$5.93 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.48 | $3.21 | $6.42 |
| premium | $4.88 | $3.50 | $7.00 |
| diesel | $5.64 | $4.04 | $8.09 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$3
Meals
$25–$50
Total
$28–$53
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 6.4 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.5 | 0 | $1.91 | $0.87 |
| Efficient EV | 4.6 | 0 | $1.59 | $0.73 |
| EV Truck/SUV | 7.3 | 0 | $2.55 | $1.16 |
Gas CO2
6 kg
EV CO2
2 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive. If you're planning ahead, check the forecast closer to your travel date.
Origin
Evening in Port Jefferson Station on Saturday
Local time
8:15 PM
EDT
Current temp
65°F
Forecast unavailable right now
Destination
Evening in Islip on Saturday
Local time
8:15 PM
EDT
Current temp
51°F
Forecast unavailable right now
Along the Route
52°F
Smithtown, NY
9 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Thanks for your feedback!
Your tip has been submitted. Thanks!
/500
Recent Tips
·
Explore more options from Port Jefferson Station, NY or browse trips ending in Islip, NY.
Looking for more statewide routes? Browse NY road trips.
Explore maps for Port Jefferson Station, NY or Islip, NY on MapSof.net.
