Switch the command center to the decisions that matter for your journey.
Official arrivals, departures, maps and transport guidance are published by Chicago O'Hare / Chicago Department of Aviation.
Loading…ORD is a four-terminal Chicago hub where the connection route depends heavily on whether you stay inside the secure area. AirportBoard combines official flight links, terminal transfer rules, city access and connection planning.
Fast, source-backed answers for the airport questions travelers search before they fly.
The difference between secure-side walking, ATS and Terminal Transfer Bus at ORD.
Open guide →How the CTA Blue Line fits into a trip between O’Hare and Chicago.
Open guide →O’Hare passenger Terminals 1, 2, 3 and 5 are active.
Terminals 1–3 have secure-side pedestrian connections.
CTA Blue Line provides public rail service between O’Hare and Chicago.
CTA Blue Line rail connects O’Hare with downtown Chicago.
The Airport Transit System links terminals landside, while secure-side walking connects Terminals 1, 2 and 3.
Terminal 5 connections may use the ATS or the Terminal Transfer Bus when eligible; construction can change stops.
Verify with official source ↗Domestic connections among Terminals 1–3 can often remain airside. International arrivals without preclearance must clear U.S. formalities, reclaim baggage and pass security again for an onward flight.
Confirm storage availability and location before leaving your terminal; a Terminal 5 move can add ATS or security time.
Luggage-storage checklist →Lounges are spread across multiple ORD terminals. Access depends on airline, terminal and whether you can remain within the secure area.
Choose by transfer friction, not only nightly price. Compare airside transit hotels, terminal-connected hotels and nearby properties with reliable shuttle access.
Model security, passport control, terminal changes, bags and self-transfer risk before relying on the headline layover time.
Check connection time →Original, source-backed pages for transport, transfers, layovers and arrival decisions.
A practical comparison of CTA Blue Line and road options from ORD.
Updated 2026-10-01 · Read guide →How secure-side walking, ATS and the Terminal Transfer Bus fit together at Chicago O’Hare.
Updated 2026-10-01 · Read guide →How to think about an ORD layover based on terminal, immigration and the Blue Line/road journey.
Updated 2026-10-01 · Read guide →A reusable checklist for separate-ticket connections where the airline does not protect the onward flight.
Updated 2026-10-01 · Read guide →A universal method for deciding whether to leave the airport during a layover.
Updated 2026-10-01 · Read guide →A provider-neutral guide to travel eSIM setup, device compatibility, activation timing and the gap between airport Wi‑Fi and mobile data.
Updated 2026-10-01 · Read guide →AirportBoard separates live open data from editorial guidance. Operational flight status stays with the official airport/airline source. Aviation weather comes from NOAA/NWS. Airport facts and transport guidance are checked against official airport or public-transport sources.
Fast answers with operational caveats where they matter.
Yes, the official airport guidance says Terminals 1–3 have secure-side pedestrian connections.
Use the current airport transfer guidance; ATS and eligible Terminal Transfer Bus service are the main options.
International arrivals without preclearance must clear CBP, claim baggage and pass TSA security again before an onward flight.
Last editorial verification: 2026-10-01. Gate, visa, security, transport and operating details can change. Confirm time-sensitive decisions with the airport, airline or transport operator.
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Explore →Use verified terminal guidance, then calculate the connection or departure buffer instead of guessing from the scheduled time alone.