How far is Flagg, IL from Lockport, IL?
The driving distance from Flagg, IL to Lockport, IL is about 77.9 miles (125.3 km), with a travel time of about 01h 20m by car.
- The straight-line flight distance is about 59.7 miles (96.1 km).
- For a round trip, plan for roughly 02h 41m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 20m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Township in Lee County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Flagg and Lockport.
Turn-by-Turn Driving Directions
Step-by-step road directions between Flagg and Lockport.
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1
Start on East Titus Road
19 m · 5 sec · East Titus Road
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2
Turn right onto South Grange Road
1.1 mi · 4 min · South Grange Road
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3
Turn right onto Lincoln Avenue
4 mi · 7 min · Lincoln Avenue
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4
Turn left onto 8th Street
122 m · 11 sec · 8th Street
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5
Turn right onto 4th Avenue
81 m · 5 sec · 4th Avenue
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6
Turn right
1.7 mi · 3 min
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7
Turn left
2198 ft · 54 sec
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8
Merge slight left onto Ronald Reagan Memorial Tollway
54.2 mi · 1 hr 1 min · Ronald Reagan Memorial Tollway
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9
Take the exit slight right toward I 355 Toll South: Joliet
1961 ft · 48 sec
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10
Keep slight left to continue on I 355 South: Joliet
2223 ft · 54 sec
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11
Merge slight left onto Veterans Memorial Tollway
14.3 mi · 17 min · Veterans Memorial Tollway
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12
Take the exit slight right toward IL 7: 159th Street
2113 ft · 52 sec
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13
Turn right onto West 159th Street
1.2 km · 1 min · West 159th Street
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14
Continue on East 9th Street
1.9 mi · 4 min · East 9th Street
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15
Arrive at your destination
0 m · 1 sec · West 9th Street
Car Route Details
A richer read on the saved driving route between Flagg and Lockport.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Ronald Reagan Memorial Tollway
Merge slight left onto Ronald Reagan Memorial Tollway
54.2 mi · 01h 01m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Rain Showers leaving Flagg and Showers And Thunderstorms near Lockport.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Flagg to Lockport?
The road trip is about 77.9 miles (125.3 km) and usually takes 01h 20m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Willow Creek is a useful midpoint, sitting about 39.7 miles from Flagg and 38.2 miles from Lockport.
How much longer is the road route than the straight-line distance?
The direct path is about 59.7 miles (96.1 km), while the road route adds roughly 18.2 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:48 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.83 one way or $25.66 round trip. Estimated CO2 is about 24.4 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers around Flagg and Showers And Thunderstorms near Lockport.
Stop Ideas Near Willow Creek
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 Willow Creek.
Plano
Naperville
Joliet Transportation Center
La Grange Road
Flight Path Map
This map shows the direct air route between Flagg and Lockport. Straight-line distance: 59.71 mi (96.1 km).
#1 Flagg
City in Illinois, United States of America
| Population | 12,745 |
| Coordinates | 41.8958600, -89.1409300 |
| Altitude | 238 |
| Country | United States |
#2 Lockport
The most populous city in Will County, Illinois.
| Population | 59,877 |
| Coordinates | 41.5894800, -88.0578400 |
| Altitude | 181 |
| Country | United States |
End: West 9th Street (-88.057844, 41.589471)
Estimated Travel Time
Distance: 125 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 35m |
| 40 mph (64.37 km/h) | 01h 56m |
| 50 mph (80.47 km/h) | 01h 33m |
| 60 mph (96.56 km/h) | 01h 17m |
| 70 mph (112.65 km/h) | 01h 06m |
| 80 mph (129 km/h) | 00h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.67 | $12.83 | $25.66 |
| Mid-grade | $5.29 | $14.55 | $29.11 |
| Premium | $5.84 | $16.05 | $32.10 |
| Diesel | $6.57 | $18.07 | $36.14 |
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 Illinois · Oct 15, 2026