A table for two was open on 83% of dates, so booking ahead works.
Last updated . Source: SnagRes availability record, 43,261 checks of Port Union through 19 October 2026. How we measure. Open dataset.
OpenTable. SnagRes watches its OpenTable calendar.
It publishes no release time. In our checks it books about 30 days ahead.
Not usually. At our latest reading (19 October 2026), it had a table for two on 83% of dates, from 43,261 checks. Chicago joined our tracker in late September 2026, so this is early.
Yes. SnagRes texts or emails you the moment a table opens on a date you picked. It never books, holds or resells a table: you book it yourself on OpenTable.
Port Union publishes no release time. On OpenTable it takes bookings about 30 days ahead in our checks, so plans a few weeks out are well within range.
At our latest reading, dated 19 October 2026, a table for two was open on 83% of dates in the window and 83% for four, from 43,261 checks. It has not opened a table on Mondays in our checks, which usually means it is closed then.
Open times ran from 6:30 PM to 9:45 PM, and 7:30 PM came up most often.
One caution on all of this: Chicago joined SnagRes in late September 2026. A few weeks of checks shows the shape of the calendar but does not settle it, so expect the figures to move. We follow 68 Chicago rooms.
Most nights a table is there if you book ahead. Search OpenTable for your party size, and if the time you want is gone, try a little earlier or later on the same night.
A cancellation can bring your table back. SnagRes checks Port Union's OpenTable calendar continuously and texts you the moment a table opens on a date you picked.
SnagRes never books, holds or resells a table. It tells you one is free, and you book it yourself on OpenTable.
How far ahead Port Union in Wicker Park takes OpenTable bookings, what our early checks show by night and hour, and how to catch a cancellation.
Keep reading: Port Union availability right now · The hardest Chicago reservations, measured · Last-minute tables in Chicago · When Chicago restaurants release tables · Every Chicago restaurant we track, live
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Port Union's calendar runs about 30 days deep. At the last check a table for two was bookable on 83% of the dates in that window, so booking a few days ahead is usually enough.
SnagRes watches Port Union, along with 283 more hard-to-book restaurants in New York, San Francisco, Los Angeles and Chicago, and alerts you when a table opens. Watching one is free and no card is needed: watch Port Union free.