O’Hare International Airport (ORD)

O’Hare is large, and they seem to be a good airport to drop off a letter that you’ve written during a layover.

Official Information

Post Security Drop Boxes

In their FAQ:

There is no post office at O’Hare but there are mail collection ​boxes scattered throughout the terminals:

Terminal 1, Concourse B, Gate B9
Terminal 1, Concourse C, Gate C18
Terminal 3, Concourse H, Gate H1, Across from the Starbucks
Terminal 3,  Concourse L, Gate L2A, Across from Publican Tavern
Terminal 5, Concourse M, Gate M8​

Last updated 9 June 2017