heathrow transition dublin to usa

When traveling from Ireland to England, there is no immigration or customs. It's like a domestic flight. You will have to change terminals as Aer Lingus is in Terminal 2, American is in Terminal 3 and British Airways uses both Terminal 3 and Terminal 5.

Go to this website, fill in your flight information and you will get step by step instructions:

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

You'll have plenty of time.

Thank you so much! I really appreciate the help.

Are these separate tickets or one?

Separate tickets. I'm booking them. Already got the American Airlines/British Airways flight home. Booking a quick round-trip to Ireland after a week in England.

The only thing I see is that a delay / cancellation by Aer Lingus would cause problems with your flight the US since they are on separate tickets. I would suggest the night before or at least an earlier flight. Also, please understand what it will cost you to change your ticket home if the need arises.

Checked bags can add to the time crunch of having to retrieve and re-check them.

Note Aer Lingus is far from generous on their carry-on allowance. What would be carry-on on BA could very well be checked bags on Aer Lingus.

Is an 11:10 a.m. arrival from Dublin enough time?

Yes, if nothing goes sideways.

I understand you have to get to Heathrow 3 hrs ahead of time but I just read that you don’t need to go through customs? We are flying from London to Dublin so wandering if it isn’t necessary to get to Heathrow 3 hrs ahead of time?

Thanks

"I understand you have to get to Heathrow 3 hrs ahead of time but I just read that you don’t need to go through customs? We are flying from London to Dublin so wandering if it isn’t necessary to get to Heathrow 3 hrs ahead of time?"

Its classed as a domestic flight so there is no immigration or customs. Furthermore, even if it was an international flight (which it is not) there is no exit immigration from the UK. However, there is security screening, that and check-in/bag drop is where the log jams are likley to be. What is your airline advising? If they are saying arrive at the airport 3 hours before departure that is exactly what you should be doing - be guided by them.

Dublin to London is very much an international flight. It hasn't been a domestic trip for around 100 years, there even was a war about it.

And while the UK and Ireland have a Common travel area, so no immigration checks between the countries, Great Britain is not part of the EU customs union. So you are crossing a customs border. That being said, it seems like UK customs official's attitude to EU arrivals has been to ignore them, so the risk that anyone asks about your bags is probably very small, but it is something that might happen.

It should work, but are you willing to pay the price of a last minute transatlantic ticket if it doesn't?

Arrivals from Ireland are routed the same way as other non UK jurisdictions in the Common Travel Area such as the Channel Islands: bypass immigration but exit via Customs.

If there are no bags to be rechecked you can go via the transfer route instead. Security will be negotiated whichever way.

Haroldmb48......flying from Heathrow TO Dublin......

Unless you hold a British or Irish passport, you have to go through immigration in Ireland. (I've done this a few times from the UK as I have a US passport.)

CTA immigration only applies to British or Irish subjects.

Furthermore, even if it was an international flight (which it is not)

It really is.

We flew through Heathrow yesterday. Terminal announcements were reminding passengers that for flights to the US they needed to be at the boarding gate two hours before departure for "additional security measures". Not sure what those were as we were flying to Singapore.