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Coming in from Ireland connecting to chicago

What should I expect? Sorry I should have said I am on Aer Lingus to Heathrow and British Airways to Chicago. I purchased one ticket all the way through, it has the same ticket number, but I cannot check in through to Chicago until I get to Heathrow. I can only check in through from Shannon to UK. Cannot check in from UK to Chicago until I get to Heathrow. Does this mean I have to get passport stamped, get my luggage and check in again? According to Heathrow I should only have to follow the purple line.

Posted by
6875 posts

Is this one ticket on Aer Lingus (Shannon to Heathrow) and British Airways (heathrow to Chicago)?

Posted by
1913 posts

Let’s assume this is one ticket - Shannon (via LHR) to Chicago.

You check-in for the start of your flight, your luggage is checked all the way through to Chicago (you don’t see it in London).

At Heathrow you simply make your way to your Chicago flight. There is no immigration on a flight from Ireland.

https://www.heathrow.com/flight-connections

Posted by
1523 posts

For that matter, you go through all the U.S. formalities (security, passport control, etc.) while at the Shannon airport.

Posted by
5462 posts

It seems I am rarely able to check all the way through online flying from Europe back to the US, perhaps this is what you are experiencing. I find it has to do with Security and to verify your passport. No problem, when you show up in Shannon, they will check you in at the counter.

Posted by
1913 posts

For that matter, you go through all the U.S. formalities (security, passport control, etc.) while at the Shannon airport.

Not if the flight is Shannon to the UK

Posted by
7 posts

Sorry I should have said I am on Aer Lingus to Heathrow and British Airways to Chicago. I purchased one ticket all the way through, it has the same ticket number, but I cannot check in through to Chicago until I get to Heathrow.

Posted by
10265 posts

Go to Heathrow Flight Connections and plug in your flight information. It will give you step by step instructions.

No passport control at Heathrow coming in from Ireland. . You cannot go through U.S immigration at Shannon. You will have to change terminals at Heathrow.

I'm guessing you can't check in until Heathrow because BA wants to check you have a valid passport.

Posted by
7809 posts

Which airline did you buy the ticket from? Or did you buy from expedia or some such entity?

Aer Lingus flights I find for SNN-ORD, connect through Boston.