Chicago Gateway: 2 Days Out and Onward
Two days means one real interstate day trip, no more pretending otherwise. Day one gets you oriented in Chicago itself and versed in what actually leaves from here; day two is Milwaukee, the only stop on this list that’s honestly a day trip. Want Indiana Dunes and Route 66 too? See the 3-day or 4-day version of this same plan.
Book these before you go
- Milwaukee day trip from Chicago : book the morning slot before summer Saturdays fill up.
- Milwaukee brewery and lakefront tour : worth locking in if a guided afternoon beats wandering solo.
- Chicago hotel rates near Union Station : stay walkable to the station since both days start there.
| Day | Focus | Distance / travel time from Chicago |
|---|---|---|
| 1 | Chicago, the home base | In the city |
| 2 | Milwaukee, WI (Amtrak Hiawatha) | ~90 min one-way, $19-37 |
Day 1: Chicago, the home base
If you’re flying in, the Blue Line is the only O’Hare rail line running all 24 hours, about 45 minutes to the Loop for $2.75 tapped on a Ventra card or contactless payment. If you’re arriving off one of Union Station’s own long-haul trains, you’re already downtown, no transfer needed. Day one isn’t about seeing everything Chicago offers; our Chicago guide covers Millennium Park, the river cruise and the rest of downtown in the depth it deserves. It’s about getting oriented before day two leaves the city limits. Walk the free Riverwalk toward Union Station in the evening and get a look at the building the rest of this trip runs through.
Day 2: Milwaukee, the one honest day trip
Catch a morning Amtrak Hiawatha from Union Station; the ride to Milwaukee runs about 90 minutes, with 7 weekday and Saturday round trips a day (6 on Sunday) and fares of $19-37 one-way depending on demand. The train stops at Glenview, Sturtevant and General Mitchell Airport along the way. Spend the day at the Harley-Davidson Museum, the Milwaukee Art Museum’s lakefront wing, or wandering the Milwaukee Public Market, then catch an evening train back with real time to spare before dinner in Chicago. Confirm current departure times at visitmilwaukee.org before you lock in a return train.
Do you need a car for this trip?
No. Both days here run entirely on the CTA and the Amtrak Hiawatha; a rental car adds a parking bill and buys you nothing a train seat doesn’t already cover. Save the car rental for the day this itinerary doesn’t include yet: Route 66.
Getting around this itinerary
CTA rail is $2.75 and bus is $2.50 since the February 2026 fare update (see transitchicago.com for current fares); tap a Ventra card or a contactless bank card directly at the turnstile. This trip stays inside two gateways only; for a longer version that adds Indiana Dunes and Route 66’s national start, see our 3-day through 7-day versions. For day trips that stay inside Illinois, see our Chicago, Illinois guide instead.
Concrete tip: book the Hiawatha the same week you book flights. A Saturday morning train in the May-October window sells out before most visitors think to check.