How far is Port Jefferson, NY from Amherst, NY?
The driving distance from Port Jefferson, NY to Amherst, NY is about 453.2 miles (729.4 km), with a travel time of about 07h 27m by car.
- The straight-line flight distance is about 326.1 miles (524.8 km).
- For a round trip, plan for roughly 14h 54m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 07h 27m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Steuben County, New York, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Slight Chance Rain Showers then Partly Sunny
Driving Route Map
The map below follows the saved road route between Port Jefferson and Amherst.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Jefferson and Amherst.
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1
Start on Main Street
25 m · 11 sec · Main Street
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2
Turn left onto West Broadway
1.4 km · 1 min · West Broadway
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3
Continue on Main Street
1.2 mi · 2 min · Main Street
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4
Continue on Route 25A
1.6 km · 2 min · Route 25A
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5
Continue on North Country Road
1853 ft · 33 sec · North Country Road
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6
Turn left onto Nicolls Road
3.1 mi · 5 min · Nicolls Road
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7
Take the exit right toward Route 347, Nesconset Highway WEST, Hauppauge, Smithtown
124 m · 11 sec
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8
Merge slight left onto Nesconset Highway
1.6 mi · 2 min · Nesconset Highway
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9
Continue on Smithtown Bypass
4.5 mi · 7 min · Smithtown Bypass
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10
Take the exit straight toward Route 111, Islip, Smithtown
116 m · 17 sec
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11
Turn left onto Hauppauge Boulevard
2424 ft · 46 sec · Hauppauge Boulevard
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12
At the end of the road, turn right onto Townline Road
128 m · 9 sec · Townline Road
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13
Keep slight left to continue on Wheeler Road
1.5 mi · 2 min · Wheeler Road
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14
Turn right onto LIE North Service Road
2816 ft · 54 sec · LIE North Service Road
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15
Take the ramp slight left toward I 495 West: New York
1303 ft · 32 sec
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16
Merge slight left onto Long Island Expressway
28.3 mi · 38 min · Long Island Expressway
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17
Take the exit slight right toward Cross Island Parkway, Whitestone Bridge, Kennedy Airport
1267 ft · 27 sec
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18
Keep slight right to continue on Cross Island Parkway North, Whitestone Bridge
1604 ft · 38 sec
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19
Merge slight left onto Cross Island Parkway
3.1 mi · 5 min · Cross Island Parkway
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20
Take the exit slight right toward I 295 North: Throgs Neck Bridge, Bronx, New England
2905 ft · 1 min
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21
Merge slight left onto Throgs Neck Bridge
1.8 mi · 3 min · Throgs Neck Bridge
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22
Continue on Throgs Neck Expressway
1.1 km · 1 min · Throgs Neck Expressway
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23
Keep slight left to continue on Cross Bronx Expressway
6.6 mi · 9 min · Cross Bronx Expressway
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24
Keep slight left to continue on Trans-Manhattan Expressway
1.1 km · 1 min · Trans-Manhattan Expressway
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25
Continue on George Washington Bridge (upper level)
3167 ft · 60 sec · George Washington Bridge (upper level)
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26
Continue straight
2659 ft · 48 sec
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27
Keep slight left
3214 ft · 39 sec
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28
Keep slight left
559 ft · 9 sec
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29
Take the exit slight right toward I 95 South, NJTP South: Hackensack
1270 ft · 23 sec
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30
Keep slight left to continue on I 95 South, NJTP South: Hackensack
1884 ft · 29 sec
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31
Merge slight left onto New Jersey Turnpike
2 mi · 3 min · New Jersey Turnpike
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32
Take the exit slight right toward I 80 West: Paterson, Hackensack
1.3 km · 1 min
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33
Continue on Christopher Columbus Highway
68.2 mi · 1 hr 21 min · Christopher Columbus Highway
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34
Keep slight left to continue on Keystone Shortway
5.5 mi · 8 min · Keystone Shortway
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35
Keep slight left to continue on Keystone Shortway
11.9 mi · 16 min · Keystone Shortway
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36
Take the exit slight right toward I 380 North: Scranton
1.1 km · 46 sec
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37
Continue straight
27.7 mi · 31 min
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38
Merge slight right
58.1 mi · 1 hr 9 min
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39
Keep slight right to continue on I 81 North: Syracuse, Albany
1.8 mi · 2 min
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40
Keep slight left to continue on I 81 North: Syracuse
37.4 mi · 44 min
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41
Take the exit slight right toward NY 13: Cortland
789 ft · 22 sec
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42
Turn right onto Clinton Avenue
12 m · 5 sec · Clinton Avenue
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43
Turn left onto Locust Avenue
1.2 mi · 2 min · Locust Avenue
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44
Continue on Albany Street
3055 ft · 1 min · Albany Street
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45
At the end of the road, turn right onto South Main Street
2126 ft · 1 min · South Main Street
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46
Turn left onto Clinton Street
10.5 mi · 15 min · Clinton Street
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47
Continue on East Lake Road
2904 ft · 49 sec · East Lake Road
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48
Continue on State Route 41
4.8 mi · 7 min · State Route 41
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49
Continue on East Lake Road
9.4 mi · 14 min · East Lake Road
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50
Continue on East Lake Street
2676 ft · 48 sec · East Lake Street
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51
Turn left onto East Genesee Street
7.3 mi · 14 min · East Genesee Street
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52
Turn right onto North Fulton Street
815 ft · 13 sec · North Fulton Street
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53
Turn left onto Arterial West
1931 ft · 1 min · Arterial West
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54
Continue on Chase Street
9.8 mi · 11 min · Chase Street
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55
Continue on Auburn Road
1.9 mi · 2 min · Auburn Road
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56
Turn right
4.1 mi · 7 min
-
57
Continue straight
97 m · 10 sec
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58
Turn right onto State Route 414
1557 ft · 29 sec · State Route 414
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59
Continue on Ridge Road
66 m · 11 sec · Ridge Road
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60
Take the ramp left
945 ft · 23 sec
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61
Keep slight left to continue on I 90 West: Buffalo
3202 ft · 1 min
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62
Merge slight left onto New York State Thruway
99.6 mi · 1 hr 55 min · New York State Thruway
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63
Take the exit slight right toward I 290: Niagara Falls
2277 ft · 37 sec
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64
Continue on Youngmann Expressway
1.8 mi · 2 min · Youngmann Expressway
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65
Take the exit slight right toward NY 324, NY 240: Sheridan Drive, Harlem Road
1117 ft · 30 sec
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66
Turn left onto Sheridan Drive
1.4 km · 2 min · Sheridan Drive
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67
Turn left onto Millersport Highway
143 m · 14 sec · Millersport Highway
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68
Arrive at your destination
0 m · 1 sec · Millersport Highway
Car Route Details
A richer read on the saved driving route between Port Jefferson and Amherst.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
New York State Thruway
Merge slight left onto New York State Thruway
99.6 mi · 01h 55m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Showers And Thunderstorms leaving Port Jefferson and Slight Chance Rain Showers then Partly Sunny near Amherst.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Jefferson to Amherst?
The road trip is about 453.2 miles (729.4 km) and usually takes 07h 27m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Riverside is a useful midpoint, sitting about 214.8 miles from Port Jefferson and 238.4 miles from Amherst.
How much longer is the road route than the straight-line distance?
The direct path is about 326.1 miles (524.8 km), while the road route adds roughly 127.1 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 6:00 AM to 7:30 AM EDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $64.10 one way or $128.21 round trip. Estimated CO2 is about 142.1 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Port Jefferson and Slight Chance Rain Showers then Partly Sunny near Amherst.
Stop Ideas Near Riverside
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 Riverside.
Scranton, PA
Wilkes-Barre, PA
White Haven, PA
Flight Path Map
This map shows the direct air route between Port Jefferson and Amherst. Straight-line distance: 326.08 mi (524.77 km).
#1 Port Jefferson
Incorporated village in the Town of Brookhaven in Suffolk County, New York
| Population | 8,127 |
| Coordinates | 40.9464900, -73.0692700 |
| Altitude | 1 |
| Country | United States |
#2 Amherst
Town in New York, United States
| Population | 120,809 |
| Coordinates | 42.9783900, -78.7997600 |
| Altitude | 182 |
| Country | United States |
End: Millersport Highway (-78.799874, 42.978447)
Estimated Travel Time
Distance: 729 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 06m |
| 40 mph (64.37 km/h) | 11h 19m |
| 50 mph (80.47 km/h) | 09h 03m |
| 60 mph (96.56 km/h) | 07h 33m |
| 70 mph (112.65 km/h) | 06h 28m |
| 80 mph (129 km/h) | 05h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.01 | $64.10 | $128.21 |
| Mid-grade | $4.48 | $71.65 | $143.30 |
| Premium | $4.86 | $77.73 | $155.45 |
| Diesel | $4.69 | $75.06 | $150.11 |
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 · May 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.