Hour-by-hour wait patterns · historical
Based on typical CBP patterns for each port
Columns: hour of day · Rows: day of week · Cells: typical wait (min) · Highlighted: current hour
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The heatmap above shows the typical wait in minutes for US-bound standard passenger vehicle lanes at each port. Darker green means shorter waits; red means two-plus hours. These are historical averages — the live page for each port shows what's happening right now.
The best time to cross San Ysidro is 2 AM to 6 AM on any weekday. Early Tuesday–Thursday mornings are consistently under 20 minutes. The worst times are Sunday evenings (returning weekend traffic from Baja), Friday afternoons, and any US federal holiday return day, when waits routinely exceed 2 hours. If you must cross at peak, consider Otay Mesa or PedWest instead.
Otay Mesa is the overflow valve for San Ysidro. Even at its worst, it rarely exceeds 90 minutes. Weekday mornings before 8 AM are almost always under 30 minutes. It's roughly 20 minutes further from downtown San Diego via SR-905, but the math almost always works in Otay's favor when San Ysidro is over 75 minutes.
Tecate is the quiet third option, about 40 miles east of Tijuana. It rarely exceeds 30 minutes, even on holidays. The catch: it's only open 5 AM to 11 PM, and it adds 45–60 minutes of driving each way from San Diego. Use it when you're already in eastern San Diego County or when the other two are truly unusable.
If you cross regularly, SENTRI is the cheat code. CBP's published target is 15 minutes or less, and in practice SENTRI lanes at San Ysidro almost always come in under that even during 3-hour standard-lane waits. The program costs $122.25 for 5 years (under $2.05/month) and requires an in-person interview. If you cross more than once a month, it pays for itself in a few trips.
Waits routinely double on major US return days: the Sunday after Thanksgiving, Memorial Day, 4th of July, Labor Day, and the 2–3 days after Christmas. If your crossing window is flexible, shift 4+ hours earlier or later than you'd normally plan.