u/CheeseNsprinkles43

We are going from The Waldorf to Heathrow terminal 3 and I wanted to see what the easiest way would be to get there? I’m unfortunately very green when it comes to train travel (although we will have a few trips before we leave for the airport by then). I’m not sure if we should have a car/taxi for the trip or take the train or subway. I’m from the states so there is very little train/subway in my life. Also how early should we leave for a 15:15 departure back to the states? Thank you all for the help. Sorry I’m so new to all of this.