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AA Guide: ORD / Chicago O'Hare International Airport - MCT, Connection, etc.

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Old Oct 18, 2015, 7:37 pm
FlyerTalk Forums Expert How-Tos and Guides
Last edit by: TEDisgone
Please edit or add information to this wiki as necessary.

At Chicago OHare (ORD), American Airlines operates out of Terminal 3



AA Ticket counters Open daily: 3:30am to 10:00pm
Flagship Check-in: Yes
Five Star Service: Yes
Curbside check-in: International only


Check-in times
In most locations, you must be checked in:
At least 45 minutes before scheduled departure, for flights within the United States
At least 60 minutes before scheduled departure, for flights to or from airports outside of the United States


Peculiarities:
ORD can be affected by winter storms or very heavy air traffic; ground holds even at incoming flights' departures airports, are not uncommon at these times. Knock-on effects during lengthy IROPS can manifest themselves systemwide.

NOTE: AA has 66 gates at Terminal 3, and has added five more at Concourse. Alaska, Iberia, and Japan Airlines all depart AA T-3. Alaska has moved to Terminal 2. All international arrivals are at Terminal 5, many international departures as well. AB, BA, CX, EY, QR, RJ depart T-5.

International arrivals from Canada airports without USCBP pre-clearance are sometimes listed as arriving at "IAB" - International Arrivals Building. These aircraft's passengers will not arrive at T-3 as domestic passengers; by Federal law, they must be cleared by USCBP, and that facility is at T-5.

There is no airside connection T-3 <--> T-5; one must go landside and use the free "ATS" airport train. Flyers connecting to BA departing T-5 may use the airside shuttle bus departing near gates G17 and K20. Every half hour 11 am - 9 pm. Sign with orange dot. TTB SERVICE HAS BEEN TEMPORARILY SUSPENDED - TTB service takes travelers from the domestic terminals (1, 2, & 3) to Terminal 5 without having to exit security or be rescreened in Terminal 5 at the TSA​ checkpoint. [Still suspended as of 4/30/2022] Airside connection has been restored March 1, 2023 - SEE BELOW


Operating terminals and gates
Terminal 1 is used by All Nippon Airlines (Departures), Ethiopian (Departures), Lufthansa (Departures), and United.

Terminal 2 is used by Air Canada, Alaska, Delta, and previously US Airways, jetBlue, along with many United Express flights.

Terminal 3 is used by Alaska Airlines, American Airlines and for departures only by Iberia and Japan Airlines (exception: arriving international flights that have been USCBP cleared, e.g. originating in Canada or DUB, arrive at Terminal 3 as domestic flights). Other airlines flying domestically and not mentioned above are also handled in Terminal 3.

Concourse G is used mostly for American Eagle flights
Concourse H and K are used for mainline flights
Concourse K gates 12-20 are typically used for international flights
Concourse L is used mostly for American Eagle flights (as well as non-oneworld carriers)

Terminal 5 is now both an international and domestic terminal. Among the international flights, the following oneworld carriers depart and arrive here: British Airways, Cathay Pacific, Etihad Airways, Finnair, Qatar Airways, and Royal Jordanian; arriving international American Airlines, Iberia and Japan Airlines flights all arrive here as well. In fact, all arriving international passengers from places without pre-clearance will arrive at Terminal 5.

Domestic carriers now using Terminal 5 are: Delta and Delta Shuttle, Frontier, Southwest, and Sun Country.


Getting from terminal to terminal
Landside transfers are normally done by using the Airport Transit System train, which also connects to the airport car parks. The ATS is currently out of service with substitute buses operating at present. April 18, 2022: ATS service has been fully restored and is operating 24/7 daily.

Terminals are connected by frequent landside buses, and AA T3 - International T5 are connected by an airside Terminal Transit Bus (TTB). If you have a boarding pass for your connection (or a printed itinerary of flight confirmation), you can use this bus, boarding at G17 or K20 and arriving airside at T5 Gate M1. The TTB runs 7 days a week, 1100 / 11 am to 2100 / 9 pm while the ATS is shut down, but seasonally and with shorter hours when it is. At other times you must exit landside and use the landside bus.

If you arrive at O'Hare on an international flight you will arrive at Terminal 5. If you have a connecting domestic flight from T1-2-3. You must use the landside bus to T3 after you process Immigration and exit Customs. You will be required to pass through security at T3. Landside busses are frequent.
May 1, 2022: Shuttle buses ended.

Airside:
walking corridors connect Terminals 1, 2 and 3 between terminals. (ATS landslide train must be used to connect to or from Terminal 5 outside of shuttle bus operating times.)

For those holding boarding passes on same day flights out of Terminal 5 (International Terminal), a shuttle bus will operate from T-3 (From Gates G17 and K20) to T-5 (Gate M13) between 11:30 am and 9:30 pm. [Still suspended as of 4/30/2022] March 1, 2023: Service restored. Connecting Traveler Information


Walking between terminals
Walking airside between terminals airside is possible (other than Terminal 5). There are no shortcuts and it can take significant time.


Arrival at the airport:
Within the U.S. as well as flights to Hawaii, Puerto Rico, and the U.S. Virgin Islands, check in:
At least 30 minutes prior to departure (if not checking bags)
At least 45 minutes prior to departure when checking bags

For flights to international destinations check in:
At least two hours prior to departure to complete all necessary international requirements


Minimum time for checking in and arriving at the gate
To better ensure an on-time departure, our goal is to close the jetbridge door 10 minutes before departure time. This allows all customers to board and stow their belongings. (AA may release your seat if you show up at your gates less than 15 minutes prior to scheduled departure.)

To retain your pre-reserved seat on a confirmed flight, make sure to follow the minimum check in and gate arrival times.*


Time to baggage delivery:
minimum 20 minutes


Security at ORD
May 2016: security queues have been quite lengthy at times, requiring up to an hour to pass through security, even at PreCheck queues. Options include:

If you have Flagship Check-In privileges, they will place you at the head of the security queue next to that check-in area.

You may choose to process security at Terminal 2 and walk airside to the AA gates (UA is only slightly better than AA). If you have CLEAR, you might want to consider clearing security here.

The mid-terminal Pre-Check line tends to be better than the one at priority security.

Note: coming out from International Terminal Arrivals immigration and customs, you are landside and may find yourself with two options: leave the building land side, or take the escalators or lifts to the ATS train platform to proceed to the other terminals or remote parking lot. To access the other terminals, you will have to process through TSA security.


What is the domestic to domestic or to international Minimum Connection Time (MCT)?
The minimum connect time at ORD, domestic to domestic or international, is 0:40 minutes. Domestic to international is easy if your international flight departs the AA terminal, but domestic to International terminal is comfortably done in 2:00 (not the official MCT, 1:15), because of the lack of connectedness between terminals. International arrival at Terminal 5 with flight departing Terminal 3, Global Entry is likely to allow 2:00 or even less, but non-U.S. or Canadian passport holders with checked baggage might use 3:00 as a better guideline.

If I am making an international to international connection, what is the process?
There is no international transit process in nearly all airports in the USA (MIA has a baggage exception for international to international). Arriving internationally, unless you have been pre-cleared, you must proceed through U. S. immigration (there are kiosks and a fast channel for Global Entry approved passengers), recover your baggage from the baggage carousel and proceed through U. S. Customs. There is a "green line" shortcut for passengers traveling only with carry-on baggage (no checked luggage) which is called "1 Stop" and there are Global Entry kiosks and there have fairly recently been dedicated Global Entry customs lines added, which ORD lacked for a very long time. Global Entry kiosks are located both in the central part of the main immigration hall area, as well as in the hall next to the 1-Stop exit.

Upon exiting Customs there is a bag drop facility; drop your checked baggage, exit to the landside arrivals area. Proceed to the the AA terminal on the ATS train, to counters or kiosks to get boarding passes for your ongoing travel, then proceed through TSA security to airside.



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AA Guide: ORD / Chicago O'Hare International Airport - MCT, Connection, etc.

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Old Dec 18, 2015, 7:39 pm
  #271  
 
Join Date: Jul 2009
Posts: 53
Thanks! I think I'm leaning slightly more toward the earlier flight -- if only there was something in between!
wroxpopuli is offline  
Old Dec 18, 2015, 7:52 pm
  #272  
 
Join Date: Nov 2008
Location: ORD
Programs: AA PLT
Posts: 2,781
Originally Posted by wroxpopuli
Thanks! I think I'm leaning slightly more toward the earlier flight -- if only there was something in between!
Not with the new system of banking that AA uses!

I think 1h20m is probably enough -- if it looks like the weather is going to be bad, you can show up to DCA early the day of departure and ask to be put on an earlier flight. As MADPhil mentioned, you don't have to reclear security, so the only concern is whether your incoming flight is on time.
linglingfool is offline  
Old Dec 23, 2015, 5:53 pm
  #273  
 
Join Date: May 2007
Location: ORD, DEL
Programs: AA (Plt Pro; 1.5 MM)
Posts: 6,185
Originally Posted by wroxpopuli
Later option would leave 80 minute connection before JAL flight, earlier would leave 3 hours. Is an hour and twenty enough time, or should I suck it up and take the earlier flight?...
An 80 min "connection"---allowing 10 min for disembarking the arriving flight---would leave you with only 20 min or so before the JL boarding begins. Therefore I would be more comfortable with the 3 hr option.
aktchi is offline  
Old Dec 28, 2015, 3:47 am
  #274  
 
Join Date: Dec 2015
Posts: 121
Hi all,

I managed to get a redemption flight (using Etihad miles) 13/08 AA47 LHR ORD which gets into ORD at 11:35.

I now need to book a separate domestic flight from ORD to RIC (unable to book using Etihad miles, they said they can't see availability). I see there are potentially 3 flights available:

AA3158 dep 14:56
AA3532 dep 18:40
AA4337 dep 21:55

I believe I'll need to clear immigration and customs in ORD before I can re-check in for the domestic flight as they will be on separate tickets.

My questions:
1. Looking at the connection times, would you say the 3hr 20mins connection time for AA3158 to be safe or not?
2. How do I find out, if I booked AA3158 and my flight from LHR is delayed, what are the chances of booking onto a later flight the same day? Or would it need to depend on availability on the day? Or will it also depend on the flexibility of the ticket?
3. If I book the AA3532, then on the day I manage to get in really early, do I have a chance to get booked on the AA3158? Or will it again depend on availability on the day? Or will it also depend on the flexibility of the ticket?

I ideally want to travel on the AA3158 as that arrives in Richmond at an earlier time, but not at risk of missing the flight and getting stuck in ORD (and potentially invalidating the RIC ORD leg at the end of my trip too?)

Any advice greatly appreciated!

Thanks,
Fish
chinafish is offline  
Old Dec 28, 2015, 4:39 am
  #275  
 
Join Date: Aug 2008
Location: South Park, Metropolis
Programs: AA LT PLT 3MM, Hilton/Marriott/SPG/Club Carlson GLD, IHG PLT
Posts: 4,613
Originally Posted by chinafish
Hi all,

I managed to get a redemption flight (using Etihad miles) 13/08 AA47 LHR ORD which gets into ORD at 11:35.

I now need to book a separate domestic flight from ORD to RIC (unable to book using Etihad miles, they said they can't see availability). I see there are potentially 3 flights available:

AA3158 dep 14:56
AA3532 dep 18:40
AA4337 dep 21:55

I believe I'll need to clear immigration and customs in ORD before I can re-check in for the domestic flight as they will be on separate tickets.

My questions:
1. Looking at the connection times, would you say the 3hr 20mins connection time for AA3158 to be safe or not?
2. How do I find out, if I booked AA3158 and my flight from LHR is delayed, what are the chances of booking onto a later flight the same day? Or would it need to depend on availability on the day? Or will it also depend on the flexibility of the ticket?
3. If I book the AA3532, then on the day I manage to get in really early, do I have a chance to get booked on the AA3158? Or will it again depend on availability on the day? Or will it also depend on the flexibility of the ticket?

I ideally want to travel on the AA3158 as that arrives in Richmond at an earlier time, but not at risk of missing the flight and getting stuck in ORD (and potentially invalidating the RIC ORD leg at the end of my trip too?)

Any advice greatly appreciated!

Thanks,
Fish
Regardless if this where to be booked as one ticket or not, you will still need to clear immigration & customs @ ORD & also collect your luggage (if you check luggage) prior to re-checking for the continuing ORD-RIC flight.
3h 20m is plenty of time for this. Keep in mind as well that you will also need to change terminals, as the LHR flights arrive T5, and the domestic AA operates from T3, should take no more than 10-15 minutes for this.

AA is good at protecting you on its booking, so rest assured if you are late in the inbound, you will be re-accommodated.
arollins is online now  
Old Dec 28, 2015, 5:09 am
  #276  
 
Join Date: Dec 2015
Posts: 121
Originally Posted by arollins
Regardless if this where to be booked as one ticket or not, you will still need to clear immigration & customs @ ORD & also collect your luggage (if you check luggage) prior to re-checking for the continuing ORD-RIC flight.
3h 20m is plenty of time for this. Keep in mind as well that you will also need to change terminals, as the LHR flights arrive T5, and the domestic AA operates from T3, should take no more than 10-15 minutes for this.

AA is good at protecting you on its booking, so rest assured if you are late in the inbound, you will be re-accommodated.
Awesome! Thanks for the super quick reply and reassurance. I feel much better.

Only having recently discovered flyer talk, I'm still new to all this. Thank you!!!

Fish
chinafish is offline  
Old Dec 30, 2015, 10:32 pm
  #277  
 
Join Date: Sep 2007
Location: ORD
Programs: UA MM, AA PPro
Posts: 1,480
Originally Posted by arollins
AA is good at protecting you on its booking, so rest assured if you are late in the inbound, you will be re-accommodated.
OP mentioned that they're going to book separate reservations. AA won't have any idea that there is an inbound, nor will they be under any obligation to accommodate the passenger on a later flight in case LHR-ORD is delayed.

Chances are very good that they will allow standby travel on a later flight to RIC, but they don't have to.

ETA: I missed the fact that the LHR-ORD is also an AA operated flight. Still, the only way AA will be able to connect two PNRs is if there's the same AAdvantage number attached to both. I doubt there will be an automatic protection on a later flight, but they will certainly be more accommodating in case of delays.


Originally Posted by chinafish

My questions:
...
2. How do I find out, if I booked AA3158 and my flight from LHR is delayed, what are the chances of booking onto a later flight the same day? Or would it need to depend on availability on the day? Or will it also depend on the flexibility of the ticket?
3. If I book the AA3532, then on the day I manage to get in really early, do I have a chance to get booked on the AA3158? Or will it again depend on availability on the day? Or will it also depend on the flexibility of the ticket?
2. AA allows passengers to change their non-refundable flights to an earlier or later same day flight for a fee of $75 (https://www.aa.com/i18n/utility/sameDayTravel.jsp), subject to availability (of 'E' inventory). Requests can be made within 24 hours of the flight you would like to change TO. When you view itinerary online there is an option for same-day flight change, or you can call AA.

3. Similarly to above, you can get on an earlier flight for $75 (either confirmed if inventory is available, or standby). You need to be an Elite member of the AAdvantage program to get fee waivers.

Of course, the above is moot if you have a fully flexible ORD-RIC ticket. You will be able to change flights if seats in the same fare class are available.

Last edited by legalalien; Dec 30, 2015 at 10:39 pm
legalalien is offline  
Old Dec 31, 2015, 3:30 am
  #278  
 
Join Date: Dec 2015
Posts: 121
Originally Posted by legalalien
the only way AA will be able to connect two PNRs is if there's the same AAdvantage number attached to both.
Thanks for highlighting this. I have now booked the LHR ORD LHR flights using EY miles on AA metal, and then the domestics using Avios on AA metal. I then managed to change the FF number on both bookings to my AAdvantage account, and they are both showing in "My Trips" when I log on. All seats selected. Fingers crossed this will allow the agents to do their magic.

I've chosen the earlier flight for ORD RIC, hopefully won't get delayed on the LHR ORD. 1 flight goes later as the backup. And then a midday flight from RIC ORD, with 1 flight behind that should still allow me to connect to my ORD LHR flight.

As both bookings are redemptions I don't think they have much flexibility? Unfortunately I've got no status so hopefully nothing goes wrong and I don't need to change anything!
chinafish is offline  
Old Dec 31, 2015, 10:04 pm
  #279  
 
Join Date: Sep 2007
Location: ORD
Programs: UA MM, AA PPro
Posts: 1,480
Originally Posted by chinafish
As both bookings are redemptions I don't think they have much flexibility? Unfortunately I've got no status so hopefully nothing goes wrong and I don't need to change anything!
Unfortunately Avios redemptions are not flexible, but you should be OK. There's enough time on the inbound to accommodate delays, and the outbound connection is easy, as no terminal change is needed. The longest you'll have to walk is maybe 15 minutes.

Good luck with your trip!
legalalien is offline  
Old Jan 6, 2016, 3:27 pm
  #280  
 
Join Date: Oct 2015
Posts: 9
Hi all,

I am due in to ORD from LHR at 1445 in late March in business class on an AA flight booked through BA. I want to book an onward economy flight with AA to LAS. There are flights at 1705 and 2020 that day. I'd prefer the earlier flight.

My questions are:

1. Is 2h 20m enough time to clear immigration & customs, recheck bags and catch the earlier flight?

2. If I am too late for the earlier flight, will AA re-book me onto the later flight?

Thanks in advance for your help.
heartyharry is offline  
Old Jan 6, 2016, 9:21 pm
  #281  
 
Join Date: May 2007
Location: ORD, DEL
Programs: AA (Plt Pro; 1.5 MM)
Posts: 6,185
Originally Posted by heartyharry
I am due in to ORD from LHR at 1445 in late March in business class on an AA flight booked through BA. I want to book an onward economy flight with AA to LAS. There are flights at 1705 and 2020 that day. I'd prefer the earlier flight.

My questions are:

1. Is 2h 20m enough time to clear immigration & customs, recheck bags and catch the earlier flight?

2. If I am too late for the earlier flight, will AA re-book me onto the later flight?

Thanks in advance for your help.
Welcome to FT! Depending on immigration lines, the earlier connection could be tight. Yes, AA will rebook you if you miss it---but it is difficult to say if the the very next flight will have space or not.
aktchi is offline  
Old Jan 7, 2016, 1:01 pm
  #282  
 
Join Date: Oct 2015
Posts: 9
Originally Posted by aktchi
Welcome to FT! Depending on immigration lines, the earlier connection could be tight. Yes, AA will rebook you if you miss it---but it is difficult to say if the the very next flight will have space or not.
Thank you very much for your welcome and the helpful response. I think I'll just book the later connection and relax!
heartyharry is offline  
Old Jan 8, 2016, 2:12 pm
  #283  
 
Join Date: May 2007
Location: ORD, DEL
Programs: AA (Plt Pro; 1.5 MM)
Posts: 6,185
Originally Posted by heartyharry
Thank you very much for your welcome and the helpful response. I think I'll just book the later connection and relax!
I would do the same. It is better to have a confirmed seat on the safer (later) flight. Then you can always request to stand by on the earlier one if you make it early enough. If you make it, fine; if not, enjoy our beautiful airport for a while and you'd be on your way.

Problem with reverse scenario is that if they don't have space left in the later flight, you'd be stuck with overnighting at a hotel at your own expense. (AA might help you get a discounted rate, but they won't foot the bill.)
aktchi is offline  
Old Jan 8, 2016, 2:40 pm
  #284  
 
Join Date: Oct 2015
Posts: 9
Originally Posted by aktchi
I would do the same. It is better to have a confirmed seat on the safer (later) flight. Then you can always request to stand by on the earlier one if you make it early enough. If you make it, fine; if not, enjoy our beautiful airport for a while and you'd be on your way.

Problem with reverse scenario is that if they don't have space left in the later flight, you'd be stuck with overnighting at a hotel at your own expense. (AA might help you get a discounted rate, but they won't foot the bill.)
That's fantastic. Your advice has enabled this relative novice traveller to make the correct decision and I know I will be relaxed on my trip as a result. Thank you very much again!
heartyharry is offline  
Old Jan 12, 2016, 4:32 pm
  #285  
 
Join Date: Jan 2016
Posts: 3
I have an IAH-ORD-HKG flight in a few days. They're booked in the same ticket but different airlines.

My question is, do I have to get my bags from the carousel in ORD and re-check them in my airlines' check-in counter for my ORD-HKG flight or are the bags checked through to HKG and I only have to deal with the immigration?
randz is offline  


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