London or Dublin to Atlanta in April

We need to get back to the U.S. from London in April. Our ship arrives at Harwich pier early am on April 24th. Can anyone advise as to the possibilities of getting to Atlanta on the 24th or thereabouts? We are Delta parents. Someone advised if we have to have positive space, we try Aer Lingus for a one-way fare? I guess that route is Heathrow to Dublin to Orlando as they don't fly into Atlanta.

Once we get back to the U.S. I'm not too worried about getting back to Indianapolis.

Thanks,

Sheila

Since your ship is docking on the 24th I looked at the 2 Gatwick to Atlanta flights on April 25th and they are both excellent for nonrev travel....right now over a 100 open seats on both the 9am and 11am...