30–35 minutes from O’Hare Transfer to Union Station, on paper
Metra’s North Central Service runs about 30–35 minutes between O’Hare Transfer and Chicago Union Station, with fares around $3–6 depending on zone and time of day. It’s a weekday-only commuter rail line, more of a niche play for northwest suburbs and Union Station than a general airport train. Think “railfan or regular commuter tool,” not first-timer airport default.
Trains run roughly every 60–120 minutes, and only Monday–Friday, which is why locals call it useless for weekend airport runs. Outside peak hours, expect gaps over an hour; people on r/chicagotransit complain about landing, checking the schedule, and seeing a 70–90 minute wait. Build in slack or skip it.
The train doesn’t reach terminals 1, 2, 3, or 5 directly; you first ride the free ATS to the O’Hare Transfer station, then board Metra there. By the time you factor ATS time, platform walking, and schedule padding, overall airport-to-downtown time often ends up similar to the CTA Blue Line for random arrival times, even though Metra runs faster between stations.
Inbound North Central trains terminate at Chicago Union Station on Canal Street, about 0.5–0.8 miles from a lot of Loop hotels. Regulars either walk 10–15 minutes with a rolling bag or grab a short bus or rideshare hop. If you really want State Street or Michigan Avenue, you’re adding another leg compared with staying on the Blue Line.
How to ride it, step by step
- 1. Land at ORD and follow signs for the free ATS from terminals 1, 2, 3, or 5.
- 2. Ride the ATS to O’Hare Transfer; it’s usually about 5–10 minutes platform to platform.
- 3. Check the North Central Service timetable in the Metra app or on metra.com; look specifically for NCS trains to Chicago Union Station, not other lines.
- 4. Buy a mobile ticket in the Metra app for zones O’Hare Transfer–Union Station, or use cash with the conductor on board if you don’t mind a small surcharge.
- 5. Board the marked NCS train, ride about 30–35 minutes to Union Station, then walk or rideshare to your final address.
What regulars do and what to watch
Suburban commuters plan flights to land 30–40 minutes before a specific NCS departure, then kill time with coffee instead of gambling on a sprint from terminal 3 to O’Hare Transfer. Frequent riders keep the Metra app installed for tickets so they never deal with cash or platform machines. If timing is off and the next train is 60–120 minutes away, they default to the Blue Line or a rideshare instead of waiting.
Big things to watch: no weekend service, limited midday frequency, and a separate fare system from CTA (Ventra doesn’t cover Metra tickets on this line). One practical tip: before you even deplane, check the Metra app for the next NCS departure; if it’s more than 45–60 minutes out, don’t force it—head for the Blue Line and move on.