How far is Plano, TX from Port Isabel, TX?
The driving distance from Plano, TX to Port Isabel, TX is about 559.4 miles (900.3 km), with a travel time of about 10h 12m by car.
- The straight-line flight distance is about 480.9 miles (774 km).
- For a round trip, plan for roughly 20h 25m 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 10h 12m.
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.
37th President of the United States of America (1913-1994)
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Plano and Port Isabel.
Turn-by-Turn Driving Directions
Step-by-step road directions between Plano and Port Isabel.
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1
Start on East 15th Street
1 km · 1 min · East 15th Street
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2
Turn left onto Central Expressway
919 ft · 18 sec · Central Expressway
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3
Take the ramp slight left toward US 75 South
798 ft · 19 sec
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4
Merge slight left onto Central Expressway
16.6 mi · 18 min · Central Expressway
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5
Take the exit slight left toward Downtown, Good-Latimer Expressway
153 m · 12 sec
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6
Continue on North Central Expressway
1.2 km · 1 min · North Central Expressway
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7
Turn right onto Elm Street
93 m · 11 sec · Elm Street
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8
Turn left onto North Pearl Expressway
1086 ft · 29 sec · North Pearl Expressway
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9
Turn right onto Young Street
572 ft · 20 sec · Young Street
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10
Turn left onto South Harwood Street
96 m · 8 sec · South Harwood Street
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11
Turn right onto Canton Street
2105 ft · 48 sec · Canton Street
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12
Take the ramp slight left toward I 30 West
1773 ft · 38 sec
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13
Keep slight left to continue on I 35E South, I 35E North: Waco, Denton
607 ft · 15 sec
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14
Keep slight left to continue on I 35E North, I 35E South: Denton, Waco
67 m · 5 sec
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15
Keep slight left to continue on I 35E South: Waco
1915 ft · 30 sec
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16
Continue on South R L Thornton Freeway
2866 ft · 44 sec · South R L Thornton Freeway
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17
Continue on South R L Thornton Freeway
89.3 mi · 1 hr 32 min · South R L Thornton Freeway
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18
Continue on North Jack Kultgen Expressway
6.6 mi · 8 min · North Jack Kultgen Expressway
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19
Continue on Purple Heart Trail
37.9 mi · 39 min · Purple Heart Trail
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20
Keep slight left
26.5 mi · 27 min
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21
Take the exit slight right toward TX 130 Toll South: San Antonio
1.1 km · 56 sec
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22
Continue straight
58.5 mi · 55 min
-
23
Take the exit slight right toward US 183 South: Lockhart
1219 ft · 30 sec
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24
Continue on United States Highway 183
2699 ft · 35 sec · United States Highway 183
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25
Continue on North Colorado Street
4.9 mi · 9 min · North Colorado Street
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26
Continue on US 183
10.1 mi · 12 min · US 183
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27
Continue on North Magnolia Avenue
4.2 mi · 7 min · North Magnolia Avenue
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28
Continue straight
51.2 mi · 57 min
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29
Turn slight left onto Farm-to-Market Road 792
8.4 mi · 11 min · Farm-to-Market Road 792
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30
Continue on East Main Street
1.3 km · 1 min · East Main Street
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31
Turn left onto South Sunset Strip Drive
1.2 mi · 1 min · South Sunset Strip Drive
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32
Continue on South US Highway 181
40.2 mi · 46 min · South US Highway 181
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33
Continue on North 8th Street
1.3 km · 56 sec · North 8th Street
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34
Continue on US Highway 181 South
16.1 mi · 18 min · US Highway 181 South
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35
Take the exit slight right
1648 ft · 45 sec
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36
Keep slight right to continue on US Route 181
65 m · 6 sec · US Route 181
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37
Turn straight onto US Highway 181
1.1 km · 1 min · US Highway 181
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38
Take the ramp right
1926 ft · 47 sec
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39
Merge slight left
11.9 mi · 14 min
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40
Take the exit straight toward I 37, US 77, I 69E
538 ft · 13 sec
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41
Keep slight left
1965 ft · 48 sec
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42
Merge slight right
2.5 mi · 2 min
-
43
Take the exit slight right toward I 69E, US 77: Kingsville, Brownsville
31.3 mi · 34 min
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44
Keep slight left to continue on U.S. Highway 77
61.3 mi · 1 hr 9 min · U.S. Highway 77
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45
Keep slight left to continue on U.S. Highway 77
43.7 mi · 47 min · U.S. Highway 77
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46
Continue on North Expressway
2.1 mi · 2 min · North Expressway
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47
Keep slight right to continue on Interstate 169
3.7 mi · 4 min · Interstate 169
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48
Continue on I-169, TX 550 Toll
1.3 km · 52 sec · I-169, TX 550 Toll
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49
Continue straight
2 mi · 2 min
-
50
Continue on State Highway 550
3.7 mi · 4 min · State Highway 550
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51
Turn left
1123 ft · 27 sec
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52
Merge slight left onto Brownsville-Port Isabel Highway
14.1 mi · 16 min · Brownsville-Port Isabel Highway
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53
Turn right onto State Highway 100
1 mi · 3 min · State Highway 100
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54
Turn slight right onto West Queen Isabella Boulevard
779 ft · 24 sec · West Queen Isabella Boulevard
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55
Turn right onto South Musina Street
865 ft · 25 sec · South Musina Street
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56
Arrive at your destination
0 m · 1 sec · South Musina Street
Car Route Details
A richer read on the saved driving route between Plano and Port Isabel.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
South R L Thornton Freeway
Continue on South R L Thornton Freeway
89.3 mi · 01h 32m
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.
Slight Chance Showers And Thunderstorms leaving Plano and Mostly Cloudy near Port Isabel.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Plano to Port Isabel?
The road trip is about 559.4 miles (900.3 km) and usually takes 10h 12m 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?
Nixon is a useful midpoint, sitting about 280.3 miles from Plano and 279.1 miles from Port Isabel.
How much longer is the road route than the straight-line distance?
The direct path is about 480.9 miles (774 km), while the road route adds roughly 78.5 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 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 $74.60 one way or $149.19 round trip. Estimated CO2 is about 175.4 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms around Plano and Mostly Cloudy near Port Isabel.
Stop Ideas Near Nixon
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 Nixon.
San Marcos Station
San Antonio Station
Austin
Flight Path Map
This map shows the direct air route between Plano and Port Isabel. Straight-line distance: 480.93 mi (773.98 km).
#1 Plano
The second most populous city in Texas and the center of the Dallas-Fort Worth metropolitan area.
| Population | 291,296 |
| Coordinates | 33.0198400, -96.6988900 |
| Altitude | 203 |
| Country | United States |
#2 Port Isabel
City in Cameron County, Texas, United States
| Population | 6,226 |
| Coordinates | 26.0734100, -97.2085800 |
| Altitude | 2 |
| Country | United States |
End: Port Isabel (-97.20858, 26.07341)
Estimated Travel Time
Distance: 900 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 18h 38m |
| 40 mph (64.37 km/h) | 13h 59m |
| 50 mph (80.47 km/h) | 11h 11m |
| 60 mph (96.56 km/h) | 09h 19m |
| 70 mph (112.65 km/h) | 07h 59m |
| 80 mph (129 km/h) | 06h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $74.60 | $149.19 |
| Mid-grade | $4.25 | $83.93 | $167.87 |
| Premium | $4.59 | $90.63 | $181.25 |
| Diesel | $3.99 | $78.82 | $157.64 |
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 29, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.