Traffic Predict
Best Time to Drive from Fontana to Lake Forest
Right now (8:16 pm PST): about 48 minutes via SR-241 South and I-15 South and SR-91 West, usually 47 at this time.
Only 39% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.
Typical drive time by departure time
| Leave | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mon | 47 | 62 | 70 | 69 | 65 | 57 | 61 | 63 | 62 | 61 | 65 | 70 | 64 | 61 | 48 | 48 | 48 |
| Tue | 47 | 68 | 73 | 76 | 73 | 56 | 55 | 52 | 57 | 68 | 70 | 69 | 70 | 64 | 50 | 48 | 46 |
| Wed | 48 | 60 | 63 | 68 | 61 | 55 | 56 | 52 | 53 | 52 | 56 | 59 | 60 | 53 | 49 | 49 | 46 |
| Thu | 47 | 63 | 71 | 65 | 61 | 61 | 54 | 58 | 66 | 67 | 66 | 67 | 66 | 65 | 49 | 47 | 47 |
| Fri | 48 | 57 | 64 | 65 | 71 | 61 | 66 | 68 | 66 | 68 | 69 | 72 | 70 | 73 | 64 | 50 | 47 |
| Sat | 47 | 48 | 49 | 49 | 49 | 53 | 62 | 65 | 64 | 67 | 65 | 66 | 57 | 64 | 60 | 49 | 46 |
| Sun | 47 | 47 | 47 | 48 | 48 | 52 | 53 | 60 | 63 | 64 | 63 | 61 | 52 | 56 | 56 | 60 | 48 |
About this drive
On weekdays the 51-mile drive from Fontana to Lake Forest (via SR-241 South and I-15 South and SR-91 West) usually takes as little as 46 minutes and up to 77 minutes, when leaving around 7:30 am on Tuesdays. The fastest times to leave are before 5:30 am or after 8 pm. Midday (11 am to 2 pm) it takes about 60 minutes. On weekends it is slowest around 2 pm on Saturdays (67 minutes).
About 46 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 5 miles surface streets (6 to 10 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Fontana to central Lake Forest along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.
Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.
Questions
What is the best time to drive from Fontana to Lake Forest?
On weekdays, leave before 5:30 am or after 8 pm. The drive usually takes about 46 minutes then, versus up to 77 minutes at the worst times.
How long does it take to drive from Fontana to Lake Forest?
The 51-mile drive usually takes 46 to 77 minutes on weekdays, depending on when you leave, and about 60 minutes midday.
When is traffic worst from Fontana to Lake Forest?
Leaving around 7:30 am on Tuesdays is usually slowest, about 77 minutes.
Freeways on this drive
SR-241 South in Orange County (16 miles) · SR-91 West in Orange County (10 miles) · I-10 West in Inland Empire (7 miles) · I-15 South in Inland Empire (7 miles) · I-15 South in Orange County (6 miles)
Inland Empire traffic right now · Inland Empire traffic tomorrow · Orange County traffic right now · Orange County traffic tomorrow
More drives
Lake Forest to Fontana (return trip) · Fontana to Los Angeles · Fontana to Long Beach · Fontana to Anaheim · Fontana to Santa Ana · Fontana to Irvine · Fontana to San Bernardino · Fontana to Moreno Valley · Fontana to Huntington Beach · Fontana to Glendale · Fontana to Santa Clarita · Fontana to Oceanside