How to Get to Airports
from Amtrak Union Station on
Chicago Train Authority (CTA)

CTA has direct service to both CHI Airports: MDW and ORD

Quincy Station to MDW To Midway Airport (MDW)
Orange Line of CTA  Quincy Station
(walk east on Adams across river 4 blocks)
Clinton Station to ORD To O'Hare Airport (ORD)
Blue Line of CTA Clinton Station
(Tilden Entrance walk south on Clinton 2 blocks)

Map of all CTA trains

How to Buy a CTA ticket - about $2