Best Time to Drive from Costa Mesa to Fontana

Right now (8:20 pm PST): about 54 minutes via SR-91 East and SR-55 North and I-15 North, usually 50 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

Minutes from Costa Mesa to Fontana 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	48	52	56	56	58	58	57	58	60	65	76	78	73	67	58	53	50
Tue	49	53	57	59	57	58	57	58	62	69	77	81	77	69	57	54	50
Wed	49	53	56	59	58	57	57	59	62	69	77	79	77	71	66	56	50
Thu	49	53	57	56	56	56	56	58	61	65	75	79	76	70	63	54	50
Fri	49	52	53	55	57	57	58	61	64	72	79	79	75	66	59	55	51
Sat	49	49	51	51	52	53	54	55	55	56	58	59	58	58	56	54	49
Sun	49	50	50	50	51	52	52	53	53	53	52	53	52	53	52	54	50

About this drive

On weekdays the 54-mile drive from Costa Mesa to Fontana (via SR-91 East and SR-55 North and I-15 North) usually takes as little as 48 minutes and up to 82 minutes, when leaving around 4:30 pm on Tuesdays. The fastest times to leave are before 6:30 am or after 8:30 pm. Midday (11 am to 2 pm) it takes about 61 minutes. On weekends it is slowest around 3:30 pm on Saturdays (60 minutes).

About 52 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 2 miles surface streets (3 to 6 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 Fontana 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 Fontana?

On weekdays, leave before 6:30 am or after 8:30 pm. The drive usually takes about 48 minutes then, versus up to 82 minutes at the worst times.

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

The 54-mile drive usually takes 48 to 82 minutes on weekdays, depending on when you leave, and about 61 minutes midday.

When is traffic worst from Costa Mesa to Fontana?

Leaving around 4:30 pm on Tuesdays is usually slowest, about 82 minutes.

Freeways on this drive

SR-91 East in Orange County (19 miles) · SR-55 North in Orange County (16 miles) · I-15 North in Inland Empire (7 miles) · I-15 North in Orange County (5 miles) · I-10 East in Inland Empire (5 miles)

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

More drives

Fontana 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 Moreno Valley · Costa Mesa to Glendale · Costa Mesa to Santa Clarita · Costa Mesa to Oceanside · Costa Mesa to Garden Grove

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	52	56	56	58	58	57	58	60	65	76	78	73	67	58	53	50
Tue	49	53	57	59	57	58	57	58	62	69	77	81	77	69	57	54	50
Wed	49	53	56	59	58	57	57	59	62	69	77	79	77	71	66	56	50
Thu	49	53	57	56	56	56	56	58	61	65	75	79	76	70	63	54	50
Fri	49	52	53	55	57	57	58	61	64	72	79	79	75	66	59	55	51
Sat	49	49	51	51	52	53	54	55	55	56	58	59	58	58	56	54	49
Sun	49	50	50	50	51	52	52	53	53	53	52	53	52	53	52	54	50

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	52	56	56	58	58	57	58	60	65	76	78	73	67	58	53	50
Tue	49	53	57	59	57	58	57	58	62	69	77	81	77	69	57	54	50
Wed	49	53	56	59	58	57	57	59	62	69	77	79	77	71	66	56	50
Thu	49	53	57	56	56	56	56	58	61	65	75	79	76	70	63	54	50
Fri	49	52	53	55	57	57	58	61	64	72	79	79	75	66	59	55	51
Sat	49	49	51	51	52	53	54	55	55	56	58	59	58	58	56	54	49
Sun	49	50	50	50	51	52	52	53	53	53	52	53	52	53	52	54	50

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	52	56	56	58	58	57	58	60	65	76	78	73	67	58	53	50
Tue	49	53	57	59	57	58	57	58	62	69	77	81	77	69	57	54	50
Wed	49	53	56	59	58	57	57	59	62	69	77	79	77	71	66	56	50
Thu	49	53	57	56	56	56	56	58	61	65	75	79	76	70	63	54	50
Fri	49	52	53	55	57	57	58	61	64	72	79	79	75	66	59	55	51
Sat	49	49	51	51	52	53	54	55	55	56	58	59	58	58	56	54	49
Sun	49	50	50	50	51	52	52	53	53	53	52	53	52	53	52	54	50