How far is McKinney, TX from Port Arthur, TX?
The driving distance from McKinney, TX to Port Arthur, TX is about 321.4 miles (517.2 km), with a travel time of about 06h 15m by car.
- The straight-line flight distance is about 277.8 miles (447 km).
- For a round trip, plan for roughly 12h 30m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
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 06h 15m.
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.
Town in Texas, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between McKinney and Port Arthur.
Turn-by-Turn Driving Directions
Step-by-step road directions between McKinney and Port Arthur.
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1
Start on North Tennessee Street
603 ft · 23 sec · North Tennessee Street
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2
Turn right onto Hunt Street
918 ft · 47 sec · Hunt Street
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3
Turn left onto North McDonald Street
1.3 km · 1 min · North McDonald Street
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4
Turn sharp right onto East University Drive
4.3 mi · 5 min · East University Drive
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5
Continue on West Princeton Drive
24 mi · 28 min · West Princeton Drive
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6
Take the exit slight right
5.5 mi · 7 min
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7
Continue on US Highway 69 South
23.2 mi · 26 min · US Highway 69 South
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8
Continue on West Lennon Drive
23 mi · 27 min · West Lennon Drive
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9
Merge slight left onto North Pacific Street
10 mi · 12 min · North Pacific Street
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10
Turn right onto Toll 49
27.1 mi · 29 min · Toll 49
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11
Take the exit slight right toward US 69: Tyler, Jacksonville
1993 ft · 34 sec
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12
Keep slight right
61 m · 6 sec
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13
Merge slight left onto South Broadway Avenue
1611 ft · 24 sec · South Broadway Avenue
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14
Continue on US Highway 69 North
16.8 mi · 19 min · US Highway 69 North
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15
Continue on North Jackson Street
5.2 mi · 6 min · North Jackson Street
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16
Continue on US Highway 69 North
9.5 mi · 11 min · US Highway 69 North
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17
Continue on North Dickinson Drive
3.4 mi · 4 min · North Dickinson Drive
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18
Continue on US Highway 69 South
9.3 mi · 11 min · US Highway 69 South
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19
Continue on North Marcus Street
1.5 mi · 2 min · North Marcus Street
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20
Continue on US Highway 69 South
11.5 mi · 13 min · US Highway 69 South
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21
Continue on Rusk Street
15.1 mi · 19 min · Rusk Street
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22
Take the exit slight right
555 ft · 15 sec
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23
Continue on Loop 287 Frontage Road
2497 ft · 49 sec · Loop 287 Frontage Road
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24
Continue on Loop 287 Frontage Road
750 ft · 18 sec · Loop 287 Frontage Road
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25
Turn right onto Kurth Drive
2.1 mi · 3 min · Kurth Drive
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26
Turn straight onto North Timberland Drive
1.2 mi · 2 min · North Timberland Drive
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27
Turn left onto South Chestnut Street
3102 ft · 1 min · South Chestnut Street
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28
Turn left onto East Denman Avenue
38.5 mi · 44 min · East Denman Avenue
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29
Continue on North Wheeler Avenue
3 mi · 3 min · North Wheeler Avenue
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30
Continue on US Highway 69 North
6.7 mi · 8 min · US Highway 69 North
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31
Continue on North Magnolia Street
2.9 mi · 3 min · North Magnolia Street
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32
Continue on US Highway 69 South
42.5 mi · 48 min · US Highway 69 South
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33
Merge slight left
9.5 mi · 10 min
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34
Keep slight right to continue on Eastex Freeway
3.1 mi · 4 min · Eastex Freeway
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35
Take the exit slight right toward US 69 South, US 96 South, US 287 South: Port Arthur
15.9 mi · 18 min
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36
Take the exit slight right toward TX 73 West: Winnie
1775 ft · 43 sec
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37
Merge slight left
1 km · 44 sec
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38
Turn slight right onto H O Mills Boulevard
1946 ft · 46 sec · H O Mills Boulevard
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39
Turn left onto Savannah Avenue
2 mi · 3 min · Savannah Avenue
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40
Turn right onto 17th Street
113 m · 16 sec · 17th Street
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41
Turn left onto Augusta Avenue
49 m · 5 sec · Augusta Avenue
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42
Arrive at your destination
0 m · 1 sec · Augusta Avenue
Car Route Details
A richer read on the saved driving route between McKinney and Port Arthur.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
US Highway 69 South
Continue on US Highway 69 South
42.5 mi · 00h 48m
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.
Mostly Cloudy leaving McKinney and Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms near Port Arthur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from McKinney to Port Arthur?
The road trip is about 321.4 miles (517.2 km) and usually takes 06h 15m 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?
Alto is a useful midpoint, sitting about 160.8 miles from McKinney and 160.6 miles from Port Arthur.
How much longer is the road route than the straight-line distance?
The direct path is about 277.8 miles (447 km), while the road route adds roughly 43.6 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 CDT. 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 $42.85 one way or $85.71 round trip. Estimated CO2 is about 100.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around McKinney and Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms near Port Arthur.
Stop Ideas Near Alto
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 Alto.
Nacogdoches, Texas
Tyler, TX
Longview
Mineola
Flight Path Map
This map shows the direct air route between McKinney and Port Arthur. Straight-line distance: 277.74 mi (446.98 km).
#1 McKinney
The third most populous city in Collin County, Texas.
| Population | 208,272 |
| Coordinates | 33.1976200, -96.6152700 |
| Altitude | 192 |
| Country | United States |
#2 Port Arthur
The most populous city in Jefferson County, Texas.
| Population | 53,921 |
| Coordinates | 29.8851900, -93.9423300 |
| Altitude | 2 |
| Country | United States |
End: Port Arthur (-93.94233, 29.88519)
Estimated Travel Time
Distance: 517 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 42m |
| 40 mph (64.37 km/h) | 08h 02m |
| 50 mph (80.47 km/h) | 06h 25m |
| 60 mph (96.56 km/h) | 05h 21m |
| 70 mph (112.65 km/h) | 04h 35m |
| 80 mph (129 km/h) | 04h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $42.85 | $85.71 |
| Mid-grade | $4.25 | $48.22 | $96.44 |
| Premium | $4.59 | $52.06 | $104.12 |
| Diesel | $3.99 | $45.28 | $90.56 |
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 Texas · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.