Chicago · United States
ORD — O'Hare International
Three connected terminals, one that isn't, and a train that runs all night
O'Hare is one of the world's great connecting airports, and for domestic transfers it is genuinely easy: three of its terminals are joined behind security, so most connections are a walk rather than an expedition. The exception is the international terminal, which is separate in a way that catches people out.
It also has something few large American airports offer — a rapid transit line running twenty-four hours a day directly from the airport into the city centre. On a snowy weekday afternoon that train is not just cheaper than a taxi, it is faster.
Terminals and how they connect
Terminals 1, 2 and 3
Domestic operations, all connected to each other behind security by walkways and underground tunnels. A connection among these three needs no re-screening and is usually a ten to twenty minute walk.
Terminal 5
The international terminal, physically separate from the others and reached by the Airport Transit System. It now handles some domestic flights too, which makes checking your terminal more important than it used to be. There is no airside link to Terminals 1 to 3.
The Airport Transit System
An automated people mover connecting all terminals with the remote parking and rental car centre, running frequently and free of charge. It is landside, so using it between Terminal 5 and the others means clearing security again.
Getting into Chicago
Times below are realistic ranges rather than best cases. Rail journeys keep to a timetable; road journeys do not, and treating the two the same is how people miss flights.
CTA Blue Line
45 minutes to the Loop
The station sits beneath Terminal 2 and trains run twenty-four hours a day, seven days a week, straight into downtown Chicago. Cheap, immune to traffic and weather, and the reason many locals never drive to O'Hare.
Metra North Central Service
40 minutes to Union Station
A commuter rail option from a station reached by shuttle. Fewer trains, weekdays only, and useful mainly if Union Station is where you are actually headed.
Taxi or ride-hailing
30 minutes to well over an hour
Around eighteen miles to the Loop on the Kennedy Expressway, which is heavily congested in both peaks. Ride-hailing pickups are from designated areas at each terminal and the parking garage.
Airport shuttle coaches
45 to 90 minutes
Shared vans and scheduled coaches serve downtown hotels and the suburbs. Sensible with a lot of luggage; slower than the train once multiple stops are counted.
Connecting through ORD
Among Terminals 1, 2 and 3 this is one of the more pleasant large-airport connections in the United States, and an hour is often genuinely enough. Terminal 5 changes the calculation completely: you exit, ride the Airport Transit System and clear security from scratch, so allow at least two hours, and more if you are arriving internationally and need immigration and customs first. The other factor here is weather — O'Hare's winter and its summer thunderstorms both produce delay cascades, so a tight last connection of the day carries real risk.
Worth knowing before you fly
The Blue Line is often the fastest option, not just the cheapest
In snow or at rush hour, a train on its own right of way beats the Kennedy Expressway comfortably. The one drawback is the walk and escalators from the platform up into Terminal 2, which is tedious with large cases.
Check whether your flight is in Terminal 5
It used to be a safe assumption that Terminal 5 meant international. It no longer is, and turning up at Terminal 3 for a Terminal 5 flight costs you a good half hour.
Winter here is a scheduling risk, not an inconvenience
De-icing queues and ground stops at O'Hare ripple through the whole US network. On a January itinerary, avoiding the last flight of the day and leaving a wider connection buffer is worth more than any other precaution.
Terminal assignments, transit timetables and fares all change. Confirm the details that matter to your trip with the airport or transport operator before you travel.
Routes through ORD
Flying from Chicago
- Chicago to Paris
- Chicago to Dubai
- Chicago to Tokyo
- Chicago to London
- Chicago to Rome
- Chicago to Madrid
- Chicago to Barcelona
- Chicago to Delhi
- Chicago to Istanbul
- Chicago to Cancún
- Chicago to Amsterdam
- Chicago to Frankfurt
- Chicago to Dublin
- Chicago to Lisbon
- Chicago to Mexico City
- Chicago to Guadalajara
- Chicago to Monterrey
- Chicago to León
- Chicago to Puerto Vallarta
- Chicago to Los Cabos
- Chicago to Panama City
- Chicago to Punta Cana
- Chicago to San Juan
- Chicago to Bogotá
FAQ
ORD — common questions
Terminals, transfers and getting into the city.
How do you get from O'Hare to downtown Chicago?
The CTA Blue Line from beneath Terminal 2 runs twenty-four hours a day and reaches the Loop in about 45 minutes for a couple of dollars, which makes it the best option for most visitors and often the fastest in bad traffic. A taxi or ride-hailing covers the eighteen miles in thirty minutes on a good day and well over an hour in either rush hour. Metra commuter rail to Union Station is an option on weekdays if that is your destination.
Are O'Hare terminals connected?
Terminals 1, 2 and 3 are all connected behind security, so a connection among them requires no re-screening — just a walk of ten to twenty minutes. Terminal 5 is separate, reached by the free Airport Transit System on the public side, which means clearing security again when you get there.
How long should I allow for a connection at O'Hare?
An hour is often workable between Terminals 1, 2 and 3, because they are joined airside. If Terminal 5 is involved at either end, allow two hours, and add immigration and customs time on top if you are arriving from abroad. In winter, treat the published minimums with suspicion and leave more room than the schedule technically requires.
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