If you are searhing for a flight offer from London Heathrow Airport to Atlanta, search for departures on Mondays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Atlanta, Tuesday would be the cheapest day to fly and Saturday is the most expensive. https://firstclassflightscairns.blogspot.com/2025/02/5-things-you-must-know-before-boarding.html