Best Time to Drive from Ontario to Fountain Valley

Right now (6:48 pm PDT): about 44 minutes via SR-261 South and SR-241 South and I-405 North, usually 44 at this time.

Only 10% 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 Fountain Valley 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	44	47	52	56	52	49	49	49	50	51	56	63	62	57	46	46	44
Tue	43	48	55	59	56	52	51	50	49	52	58	63	62	57	47	45	43
Wed	43	48	55	63	57	53	50	50	50	52	61	62	62	60	45	45	43
Thu	43	48	53	58	53	51	50	50	51	53	60	65	65	60	48	45	43
Fri	43	47	48	51	48	49	49	50	55	59	65	65	65	58	47	45	43
Sat	43	44	45	45	46	48	49	47	48	50	48	52	50	49	44	44	43
Sun	43	43	43	44	44	46	46	46	48	46	46	45	45	45	44	45	43

About this drive

On weekdays the 41-mile drive from Ontario to Fountain Valley (via SR-261 South and SR-241 South and I-405 North) usually takes as little as 43 minutes and up to 66 minutes, when leaving around 4:30 pm on Fridays. The fastest times to leave are before 6 am or after 7 pm. Midday (11 am to 2 pm) it takes about 51 minutes. On weekends it is slowest around 3:30 pm on Saturdays (53 minutes).

About 29 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 12 miles surface streets (17 to 36 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Ontario to central Fountain Valley 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 Fountain Valley?

On weekdays, leave before 6 am or after 7 pm. The drive usually takes about 43 minutes then, versus up to 66 minutes at the worst times.

How long does it take to drive from Ontario to Fountain Valley?

The 41-mile drive usually takes 43 to 66 minutes on weekdays, depending on when you leave, and about 51 minutes midday.

When is traffic worst from Ontario to Fountain Valley?

Leaving around 4:30 pm on Fridays is usually slowest, about 66 minutes.

Freeways on this drive

SR-261 South in Orange County (8 miles) · SR-241 South in Orange County (6 miles) · I-405 North in Orange County (6 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

Fountain Valley 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	44	47	52	56	52	49	49	49	50	51	56	63	62	57	46	46	44
Tue	43	48	55	59	56	52	51	50	49	52	58	63	62	57	47	45	43
Wed	43	48	55	63	57	53	50	50	50	52	61	62	62	60	45	45	43
Thu	43	48	53	58	53	51	50	50	51	53	60	65	65	60	48	45	43
Fri	43	47	48	51	48	49	49	50	55	59	65	65	65	58	47	45	43
Sat	43	44	45	45	46	48	49	47	48	50	48	52	50	49	44	44	43
Sun	43	43	43	44	44	46	46	46	48	46	46	45	45	45	44	45	43

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	44	47	52	56	52	49	49	49	50	51	56	63	62	57	46	46	44
Tue	43	48	55	59	56	52	51	50	49	52	58	63	62	57	47	45	43
Wed	43	48	55	63	57	53	50	50	50	52	61	62	62	60	45	45	43
Thu	43	48	53	58	53	51	50	50	51	53	60	65	65	60	48	45	43
Fri	43	47	48	51	48	49	49	50	55	59	65	65	65	58	47	45	43
Sat	43	44	45	45	46	48	49	47	48	50	48	52	50	49	44	44	43
Sun	43	43	43	44	44	46	46	46	48	46	46	45	45	45	44	45	43

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	44	47	52	56	52	49	49	49	50	51	56	63	62	57	46	46	44
Tue	43	48	55	59	56	52	51	50	49	52	58	63	62	57	47	45	43
Wed	43	48	55	63	57	53	50	50	50	52	61	62	62	60	45	45	43
Thu	43	48	53	58	53	51	50	50	51	53	60	65	65	60	48	45	43
Fri	43	47	48	51	48	49	49	50	55	59	65	65	65	58	47	45	43
Sat	43	44	45	45	46	48	49	47	48	50	48	52	50	49	44	44	43
Sun	43	43	43	44	44	46	46	46	48	46	46	45	45	45	44	45	43