Best Time to Drive from Ontario to Lake Forest

Right now (6:53 pm PDT): about 55 minutes via SR-241 South, usually 43 at this time.

Only 30% 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

Minutes from Ontario to Lake Forest by day and time you leave (local time)
Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	41	44	49	52	49	46	45	45	46	46	51	56	55	52	43	42	41
Tue	40	45	52	55	52	48	46	46	45	47	52	54	53	51	43	41	40
Wed	40	46	51	58	53	49	46	45	45	47	54	54	54	54	42	41	40
Thu	40	45	49	54	48	47	46	46	46	48	53	57	56	53	43	42	40
Fri	40	45	45	47	45	45	45	46	50	54	58	58	57	53	43	42	40
Sat	40	41	42	42	43	44	45	43	45	45	46	48	47	46	41	41	40
Sun	40	40	41	41	41	43	42	43	44	43	42	41	41	41	41	42	40

About this drive

On weekdays the 37-mile drive from Ontario to Lake Forest (via SR-241 South) usually takes as little as 40 minutes and up to 58 minutes, when leaving around 8 am on Wednesdays. The fastest times to leave are before 6 am or after 7 pm. Midday (11 am to 2 pm) it takes about 46 minutes. On weekends it is slowest around 3:30 pm on Saturdays (49 minutes).

About 25 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 12 miles surface streets (18 to 35 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Ontario 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 Ontario to Lake Forest?

On weekdays, leave before 6 am or after 7 pm. The drive usually takes about 40 minutes then, versus up to 58 minutes at the worst times.

How long does it take to drive from Ontario to Lake Forest?

The 37-mile drive usually takes 40 to 58 minutes on weekdays, depending on when you leave, and about 46 minutes midday.

When is traffic worst from Ontario to Lake Forest?

Leaving around 8 am on Wednesdays is usually slowest, about 58 minutes.

Freeways on this drive

SR-241 South in Orange County (16 miles) · SR-71 North in Orange County (4 miles) · SR-91 West in Orange County (4 miles)

Inland Empire traffic right now · Inland Empire traffic tomorrow · Orange County traffic right now · Orange County traffic tomorrow

More drives

Lake Forest to Ontario (return trip) · Ontario to Los Angeles · Ontario to Santa Monica · Ontario to Pasadena · Ontario to Long Beach · Ontario to West Covina · Ontario to Burbank · Ontario to Glendale · Ontario to Santa Clarita · Ontario to Van Nuys · Ontario to Torrance · Ontario to LAX

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	41	44	49	52	49	46	45	45	46	46	51	56	55	52	43	42	41
Tue	40	45	52	55	52	48	46	46	45	47	52	54	53	51	43	41	40
Wed	40	46	51	58	53	49	46	45	45	47	54	54	54	54	42	41	40
Thu	40	45	49	54	48	47	46	46	46	48	53	57	56	53	43	42	40
Fri	40	45	45	47	45	45	45	46	50	54	58	58	57	53	43	42	40
Sat	40	41	42	42	43	44	45	43	45	45	46	48	47	46	41	41	40
Sun	40	40	41	41	41	43	42	43	44	43	42	41	41	41	41	42	40

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	41	44	49	52	49	46	45	45	46	46	51	56	55	52	43	42	41
Tue	40	45	52	55	52	48	46	46	45	47	52	54	53	51	43	41	40
Wed	40	46	51	58	53	49	46	45	45	47	54	54	54	54	42	41	40
Thu	40	45	49	54	48	47	46	46	46	48	53	57	56	53	43	42	40
Fri	40	45	45	47	45	45	45	46	50	54	58	58	57	53	43	42	40
Sat	40	41	42	42	43	44	45	43	45	45	46	48	47	46	41	41	40
Sun	40	40	41	41	41	43	42	43	44	43	42	41	41	41	41	42	40

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	41	44	49	52	49	46	45	45	46	46	51	56	55	52	43	42	41
Tue	40	45	52	55	52	48	46	46	45	47	52	54	53	51	43	41	40
Wed	40	46	51	58	53	49	46	45	45	47	54	54	54	54	42	41	40
Thu	40	45	49	54	48	47	46	46	46	48	53	57	56	53	43	42	40
Fri	40	45	45	47	45	45	45	46	50	54	58	58	57	53	43	42	40
Sat	40	41	42	42	43	44	45	43	45	45	46	48	47	46	41	41	40
Sun	40	40	41	41	41	43	42	43	44	43	42	41	41	41	41	42	40