BWI Checkpoint B security wait times: what to expect
From October 13 to November 9 we logged 105,717 security checkpoint readings at BWI Checkpoint B. The standard lane averaged 2 minutes, and TSA PreCheck averaged 2 minutes. 98% of standard-lane readings were 10 minutes or less, and none were over half an hour.
That is in line with BWI as a whole.
When the line is longest
The standard line at Checkpoint B is longest around 7 AM, when it has averaged 6 minutes, and shortest around 1 AM, at 1 minute. By day of the week, Sunday has been the heaviest (3 minutes on average) and Wednesday the lightest (2 minutes).
| Time of day | Standard | PreCheck |
|---|---|---|
| Early morning (4–8 AM) | 5 min | 3 min |
| Morning (8 AM–noon) | 4 min | 3 min |
| Midday (noon–4 PM) | 2 min | 2 min |
| Evening (4–8 PM) | 1 min | 1 min |
| Night (8 PM–4 AM) | 1 min | 2 min |
Average wait across the last 28 days. A dash means the lane is usually closed then.
PreCheck at Checkpoint B
PreCheck and standard waits have been almost the same here, within a minute of each other on average, so PreCheck matters less at Checkpoint B than at busier checkpoints.
How early to arrive
To plan your arrival, use the worst hour rather than the average: at Checkpoint B that is 6 minutes in the standard lane around 7 AM. Allow that on top of your airline's check-in and bag-drop deadlines, and more on Sundays and holiday weekends. The live board above shows what the line is doing right now, and the chart projects the next 12 hours.
Other terminals at BWI
| Terminal | Standard avg | PreCheck avg | Busiest hour |
|---|---|---|---|
| Checkpoint A | 3 min | 2 min | 7 AM |
| Checkpoint BC | 3 min | 2 min | 7 AM |
| Checkpoint DE | 3 min | 3 min | 1 PM |
Where these numbers come from
Each airport publishes its own checkpoint wait estimates. This site reads them every minute and keeps every reading. Closed lanes are left out of the averages, and times are local to the airport. The averages above cover the last 28 days and are recalculated every hour. The posted wait is the airport's estimate, not a timed measurement, so treat it as a guide.
The full archive is free to download as an open dataset, and the about page explains who runs the site and why.