Train from Heathrow to Edinburgh?

Unfortnately I will be traveling directly to Edinburgh, but the flights are very expensive as I am traveling next week, and found out that it's World Cup Rugby in Edinburgh over the weekend. That's why I looked into the train. the flight to Edinburgh is about 200 pounds or more....so I guess I have to check into other options?

Assuming you are arriving at Heathrow you have a bunch of options to get you to Kings Cross Station.
A taxi will cost you about $100USD. The Heathrow Express train($30USD) will get you Paddington Station from there you can take the Underground or a taxi to Kings Cross. If you think you can manage all of your luggage on a subway car/stations, you can take the the Piccadilly line directly from the airport to Kings Cross; this will be your cheapest option. If you are going to be spending some time touring the city before you head off the Edinburgh same day, you can leave your luggage at either Paddington or Kings Cross for a fee.

Trains to Edinburgh Waverly station leave from London Kings Cross Station. Travel time is about 4.5 hours. You won't have any problems with your luggage, there is plenty of space. Are you heading directly to Edinburgh right after you land at Heathrow? If so, you may want fly to instead. Getting into central especially with a lot of luggage is very expensive, and a bit of a hassle. But if you are traveling to Scotland after spending a few days in London, then the train is your best option.

The train is cheap if you book ahead. Walk-up fares can be pretty expensive. Your only luggage limit is what you can readily wrestle on and off the train yourself.

To get the cheapest train fare, book now at www.gner.co.uk. You have to register before you can book. If you're asked for a UK postal code, enter one for any London hotel. Then when it comes time to pay, change the address to match the one associated with the credit card you'll be using.

Greetings
I actually think it's not worth connecting to an Edinburgh flight at Heathrow because it can be a nightmare getting between the terminals and the chance of lost or delayed luggage is high. Also, if your tickets aren't booked together, you can't get the trans-Atlantic allowance for luggage (2 suitcases), so you'll pay through the nose for the overage.

I would buy your train tickets NOW because there are quotas for the cheap tickets and then tend to go quickly at busy times. Just allow plenty of time between landing and train.

Your best bet is to go via Heathrow Express and/or Tube to King's Cross and grab a GNER train up north. Depending on when you arrive, you could also take a sleeper train overnight from Euston Station to Edinburgh, but the cheap bargain berths are likely to be gone now. Still cheaper than flying though.

No luggage limits on train, but there is always a shortage of luggage rack space, so it's best not to bring huge bags on the train.

Have fun
Kate

Thanks so much for all your help,It is very useful information.This independent travel, while fun, is time consuming to plan. I think I have found a connecting flight from Heathrow to Edinburgh afterall, so persistence pays off.