Best Time to Drive from Costa Mesa to Ontario

Right now (5:17 pm PDT): about 71 minutes via SR-57 North and SR-60 East and SR-55 North, usually 66 at this time.

Only 51% 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 Costa Mesa to Ontario 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	39	40	43	45	45	45	45	45	45	52	58	62	61	53	42	41	39
Tue	39	41	43	47	45	48	47	46	48	51	57	63	60	54	45	41	39
Wed	39	41	44	48	47	47	46	47	51	53	59	62	67	61	50	44	39
Thu	39	40	43	45	46	47	46	46	46	52	60	61	62	54	51	43	39
Fri	38	40	42	44	44	45	46	48	51	57	65	65	66	50	43	41	39
Sat	39	40	40	40	41	41	41	42	42	42	46	45	45	45	41	41	39
Sun	39	40	40	40	40	41	42	42	42	42	41	42	41	41	41	42	39

About this drive

On weekdays the 43-mile drive from Costa Mesa to Ontario (via SR-57 North and SR-60 East and SR-55 North) usually takes as little as 38 minutes and up to 67 minutes, when leaving around 5 pm on Wednesdays. The fastest times to leave are before 7 am or after 8 pm. Midday (11 am to 2 pm) it takes about 48 minutes. On weekends it is slowest around 4:30 pm on Saturdays (48 minutes).

About 40 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 3 miles surface streets (4 to 8 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Costa Mesa to central Ontario 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 Costa Mesa to Ontario?

On weekdays, leave before 7 am or after 8 pm. The drive usually takes about 38 minutes then, versus up to 67 minutes at the worst times.

How long does it take to drive from Costa Mesa to Ontario?

The 43-mile drive usually takes 38 to 67 minutes on weekdays, depending on when you leave, and about 48 minutes midday.

When is traffic worst from Costa Mesa to Ontario?

Leaving around 5 pm on Wednesdays is usually slowest, about 67 minutes.

Freeways on this drive

SR-57 North in Orange County (12 miles) · SR-60 East in Los Angeles (9 miles) · SR-55 North in Orange County (8 miles) · I-5 North in Orange County (4 miles) · SR-57 North in Los Angeles (4 miles) · SR-60 East in Inland Empire (2 miles)

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

More drives

Ontario to Costa Mesa (return trip) · Costa Mesa to Los Angeles · Costa Mesa to Anaheim · Costa Mesa to Riverside · Costa Mesa to Santa Ana · Costa Mesa to Irvine · Costa Mesa to San Bernardino · Costa Mesa to Fontana · Costa Mesa to Moreno Valley · Costa Mesa to Glendale · Costa Mesa to Santa Clarita · Costa Mesa to Oceanside

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	39	40	43	45	45	45	45	45	45	52	58	62	61	53	42	41	39
Tue	39	41	43	47	45	48	47	46	48	51	57	63	60	54	45	41	39
Wed	39	41	44	48	47	47	46	47	51	53	59	62	67	61	50	44	39
Thu	39	40	43	45	46	47	46	46	46	52	60	61	62	54	51	43	39
Fri	38	40	42	44	44	45	46	48	51	57	65	65	66	50	43	41	39
Sat	39	40	40	40	41	41	41	42	42	42	46	45	45	45	41	41	39
Sun	39	40	40	40	40	41	42	42	42	42	41	42	41	41	41	42	39

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	39	40	43	45	45	45	45	45	45	52	58	62	61	53	42	41	39
Tue	39	41	43	47	45	48	47	46	48	51	57	63	60	54	45	41	39
Wed	39	41	44	48	47	47	46	47	51	53	59	62	67	61	50	44	39
Thu	39	40	43	45	46	47	46	46	46	52	60	61	62	54	51	43	39
Fri	38	40	42	44	44	45	46	48	51	57	65	65	66	50	43	41	39
Sat	39	40	40	40	41	41	41	42	42	42	46	45	45	45	41	41	39
Sun	39	40	40	40	40	41	42	42	42	42	41	42	41	41	41	42	39

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	39	40	43	45	45	45	45	45	45	52	58	62	61	53	42	41	39
Tue	39	41	43	47	45	48	47	46	48	51	57	63	60	54	45	41	39
Wed	39	41	44	48	47	47	46	47	51	53	59	62	67	61	50	44	39
Thu	39	40	43	45	46	47	46	46	46	52	60	61	62	54	51	43	39
Fri	38	40	42	44	44	45	46	48	51	57	65	65	66	50	43	41	39
Sat	39	40	40	40	41	41	41	42	42	42	46	45	45	45	41	41	39
Sun	39	40	40	40	40	41	42	42	42	42	41	42	41	41	41	42	39