Most people leave for work at the same time out of habit — and often that habit lands them right in the worst of rush hour. A small shift in departure time can save a surprising amount of the drive. Here's how to find the best time to leave, why generic advice only gets you halfway, and how to get an answer tuned to your actual commute.
When is traffic worst?
For most commutes, congestion follows a predictable daily shape. Mornings are heaviest roughly between 7:00 and 9:00 a.m., as most workplaces start between 8 and 9. Evenings peak roughly between 4:00 and 7:00 p.m., when commuters heading home overlap with other afternoon trips. The evening peak is usually worse than the morning one because more people are on the road for non-work reasons too.
These windows shift with local factors: work start times, school and university schedules, and big events all move the peak. That's why a time that works in one city can be wrong in another.
The simple rule: shift 15–30 minutes off the peak
The most reliable trick is to leave just before or just after the busiest window rather than in the middle of it. Analysis of commuting data shows that shifting your departure by as little as half an hour can meaningfully reduce time in traffic — the roads clear noticeably in the 30 minutes after the peak in most large cities. Over a year of commuting, those saved minutes add up to many hours.
So if your route peaks at 8:00–8:30 a.m., leaving at 7:30 or waiting until 9:00 often beats sitting in the worst of it — even though you left "later," you may arrive sooner.
Why generic advice only gets you halfway
"Leave before 7 a.m." is a blunt instrument. The real best time to leave depends on three things a general rule can't know:
- Your specific route. Two roads to the same office can peak at different times.
- The day of the week. Traffic on a Monday isn't the same as a Friday, and some days are reliably worse than others on a given route.
- Today's conditions. Weather, incidents, and events shift the picture day to day.
To actually beat traffic, you need the best time to leave for your route, today — not the national average.
How to find the best time to leave for your commute
This is where a commute-first app helps. Instead of guessing, BoardSpy checks your saved route before you leave and tells you when to go. It goes further than a single suggestion:
- Best time to leave, by route. It reads today's conditions on your actual route and recommends a departure time.
- Delay and on-time stats. It tracks how your route actually performs, so you can see how reliable each departure window is.
- Best and worst days for traffic. It reports which days of the week run smoothest and which to brace for on your route.
- Weather along the way. Because rain and cold change drive time, it factors weather into the timing.
When you're ready to go, it opens your map app for turn-by-turn as usual. For choosing the road itself, see how to find alternate routes.
Frequently asked questions
What is the best time to leave for work to avoid traffic?
Generally, leave 15–30 minutes before or after the morning peak of roughly 7:00–9:00 a.m. The exact best time depends on your route, city, and day, which is why a route-specific app gives a more accurate answer than a general rule.
What time is traffic the worst?
Morning traffic is typically heaviest around 7:00–9:00 a.m. and evening traffic around 4:00–7:00 p.m. The evening peak is often worse because commuters mix with other afternoon trips.
Does leaving 30 minutes earlier really help?
Often, yes. Roads usually clear noticeably in the 30 minutes on either side of the peak, so a small shift can cut a large share of the delay and add up to many saved hours over a year.
How do I know the best day to drive?
Traffic varies by day of week and by route. A commute app that tracks your route's best and worst days gives you a route-specific answer rather than a general guess.