How far is Brookhaven, NY from Islip, NY?
The driving distance from Brookhaven, NY to Islip, NY is about 19.3 miles (31 km), with a travel time of about 00h 23m by car.
- The straight-line flight distance is about 15.8 miles (25.5 km).
- For a round trip, plan for roughly 00h 46m 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 23m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Village in Suffolk County, New York
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Brookhaven and Islip.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brookhaven and Islip.
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1
Start on South Country Road
1912 ft · 47 sec · South Country Road
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2
Continue on South Country Road
108 m · 17 sec · South Country Road
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3
Turn straight onto Montauk Highway
1.3 km · 1 min · Montauk Highway
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4
Turn left onto Horseblock Road
1602 ft · 29 sec · Horseblock Road
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5
Take the ramp slight right toward NY 27 West: New York
1374 ft · 34 sec
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6
Merge slight left onto Sunrise Highway
15.6 mi · 21 min · Sunrise Highway
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7
Take the exit slight right toward NY 111: Islip, Smithtown
593 ft · 15 sec
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8
Turn straight onto Sunrise Highway
3070 ft · 58 sec · Sunrise Highway
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9
Turn slight right onto NY 111 South: Islip
713 ft · 35 sec
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10
Turn straight onto Islip Avenue
1.4 km · 2 min · Islip Avenue
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11
At the end of the road, turn right onto Main Street
865 ft · 15 sec · Main Street
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12
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between Brookhaven 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.
Sunrise Highway
Merge slight left onto Sunrise Highway
15.6 mi · 00h 21m
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.
Chance Rain Showers leaving Brookhaven and Chance Rain Showers near Islip.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brookhaven to Islip?
The road trip is about 19.3 miles (31 km) and usually takes 00h 23m 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?
Patchogue is a useful midpoint, sitting about 9.6 miles from Brookhaven and 9.6 miles from Islip.
How much longer is the road route than the straight-line distance?
The direct path is about 15.8 miles (25.5 km), while the road route adds roughly 3.5 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 7:44 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.73 one way or $5.45 round trip. Estimated CO2 is about 6 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Brookhaven and Chance Rain Showers near Islip.
Stop Ideas Near Patchogue
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Patchogue.
Bridgeport
Stamford Transportation Center
Union Station
New Rochelle station
Flight Path Map
This map shows the direct air route between Brookhaven and Islip. Straight-line distance: 15.81 mi (25.45 km).
#1 Brookhaven
This town in Suffolk County, New York, is the most populous in the state.
| Population | 479,883 |
| Coordinates | 40.7792700, -72.9153800 |
| Altitude | 3 |
| 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: 31 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 38m |
| 40 mph (64.37 km/h) | 00h 28m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $2.73 | $5.45 |
| Mid-grade | $4.48 | $3.05 | $6.09 |
| Premium | $4.86 | $3.31 | $6.61 |
| Diesel | $4.69 | $3.19 | $6.38 |
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 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.