How far is Brookhaven, NY from Islandia, NY?
The driving distance from Brookhaven, NY to Islandia, NY is about 15.9 miles (25.6 km), with a travel time of about 00h 24m by car.
- The straight-line flight distance is about 13.4 miles (21.5 km).
- For a round trip, plan for roughly 00h 48m 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 24m.
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
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Brookhaven and Islandia.
Turn-by-Turn Driving Directions
Step-by-step road directions between Brookhaven and Islandia.
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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
4.2 mi · 6 min · Horseblock Road
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5
Turn left onto Express Drive North
873 ft · 15 sec · Express Drive North
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6
Take the ramp straight toward I 495 WEST: New York
1278 ft · 22 sec
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7
Merge slight left onto Long Island Expressway
9 mi · 12 min · Long Island Expressway
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8
Take the exit slight right toward Old Nichols Road, Nesconset, Central Islip
1019 ft · 22 sec
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9
Turn straight onto Express Drive North
149 m · 14 sec · Express Drive North
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10
Turn left onto Old Nichols Road
3073 ft · 2 min · Old Nichols Road
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11
Turn right onto Hancock Street
731 ft · 34 sec · Hancock Street
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12
Turn right onto Bedford Avenue
57 m · 8 sec · Bedford Avenue
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13
Arrive at your destination
0 m · 1 sec · Bedford Avenue
Car Route Details
A richer read on the saved driving route between Brookhaven and Islandia.
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
8.97 mi · 00h 12m
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.
Rain Showers Likely leaving Brookhaven and Rain Showers Likely near Islandia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Brookhaven to Islandia?
The road trip is about 15.9 miles (25.6 km) and usually takes 00h 24m 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?
Farmingville is a useful midpoint, sitting about 8 miles from Brookhaven and 8 miles from Islandia.
How much longer is the road route than the straight-line distance?
The direct path is about 13.4 miles (21.5 km), while the road route adds roughly 2.5 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 7:42 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.25 one way or $4.49 round trip. Estimated CO2 is about 5 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Brookhaven and Rain Showers Likely near Islandia.
Stop Ideas Near Farmingville
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 Farmingville.
Bridgeport
Stamford Transportation Center
Union Station
New Rochelle station
Flight Path Map
This map shows the direct air route between Brookhaven and Islandia. Straight-line distance: 13.38 mi (21.53 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 Islandia
Village in Suffolk County, New York, United States
| Population | 3,309 |
| Coordinates | 40.8042600, -73.1690000 |
| Altitude | 20 |
| Country | United States |
End: Islandia (-73.169, 40.80426)
Estimated Travel Time
Distance: 26 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 31m |
| 40 mph (64.37 km/h) | 00h 23m |
| 50 mph (80.47 km/h) | 00h 19m |
| 60 mph (96.56 km/h) | 00h 15m |
| 70 mph (112.65 km/h) | 00h 13m |
| 80 mph (129 km/h) | 00h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $2.25 | $4.49 |
| Mid-grade | $4.48 | $2.51 | $5.02 |
| Premium | $4.86 | $2.72 | $5.44 |
| Diesel | $4.69 | $2.63 | $5.26 |
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.