How far is Lockport, IL from Flagg, IL?
The driving distance from Lockport, IL to Flagg, IL is about 79.8 miles (128.4 km), with a travel time of about 01h 40m by car.
- The straight-line flight distance is about 59.7 miles (96.1 km).
- For a round trip, plan for roughly 03h 21m 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 40m.
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
Rain Showers
Driving Route Map
The map below follows the saved road route between Lockport and Flagg.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lockport and Flagg.
-
1
Start on West 9th Street
1.9 mi · 4 min · West 9th Street
-
2
Continue on West 159th Street
1.4 km · 2 min · West 159th Street
-
3
Turn left onto I 355 North: West Suburbs
2577 ft · 1 min
-
4
Merge slight left onto Veterans Memorial Tollway
13.8 mi · 16 min · Veterans Memorial Tollway
-
5
Take the exit slight right toward I 88 Toll: Aurora, Chicago
1 km · 1 min
-
6
Keep slight left to continue on I 88 West: Aurora
1.1 km · 2 min
-
7
Merge slight left onto Ronald Reagan Memorial Tollway
16.8 mi · 20 min · Ronald Reagan Memorial Tollway
-
8
Keep slight left to continue on Ronald Reagan Memorial Tollway
37.4 mi · 40 min · Ronald Reagan Memorial Tollway
-
9
Take the exit slight right toward IL 251: Rochelle, Mendota
2006 ft · 49 sec
-
10
Turn right
1.4 mi · 2 min
-
11
Turn right onto 4th Avenue
103 m · 10 sec · 4th Avenue
-
12
Turn right onto North 6th Street
120 m · 9 sec · North 6th Street
-
13
Turn right onto Lincoln Avenue
4.1 mi · 7 min · Lincoln Avenue
-
14
Turn left onto South Grange Road
1.1 mi · 4 min · South Grange Road
-
15
Turn left onto East Titus Road
19 m · 3 sec · East Titus Road
-
16
Arrive at your destination
0 m · 1 sec · East Titus Road
Car Route Details
A richer read on the saved driving route between Lockport and Flagg.
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
Keep slight left to continue on Ronald Reagan Memorial Tollway
37.4 mi · 00h 40m
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.
Showers And Thunderstorms leaving Lockport and Rain Showers near Flagg.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lockport to Flagg?
The road trip is about 79.8 miles (128.4 km) and usually takes 01h 40m 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 39.8 miles from Lockport and 40 miles from Flagg.
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 20.1 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:08 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.11 one way or $26.22 round trip. Estimated CO2 is about 25 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Lockport and Rain Showers near Flagg.
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 Lockport and Flagg. Straight-line distance: 59.71 mi (96.1 km).
#1 Lockport
The most populous city in Will County, Illinois.
| Population | 59,877 |
| Coordinates | 41.5894800, -88.0578400 |
| Altitude | 181 |
| Country | United States |
#2 Flagg
City in Illinois, United States of America
| Population | 12,745 |
| Coordinates | 41.8958600, -89.1409300 |
| Altitude | 238 |
| Country | United States |
End: Flagg (-89.14093, 41.89586)
Estimated Travel Time
Distance: 128 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 39m |
| 40 mph (64.37 km/h) | 01h 59m |
| 50 mph (80.47 km/h) | 01h 35m |
| 60 mph (96.56 km/h) | 01h 19m |
| 70 mph (112.65 km/h) | 01h 08m |
| 80 mph (129 km/h) | 00h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.67 | $13.11 | $26.22 |
| Mid-grade | $5.29 | $14.87 | $29.74 |
| Premium | $5.84 | $16.40 | $32.80 |
| Diesel | $6.57 | $18.46 | $36.93 |
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