Heathrow to Paddington to Victoria
 

We have decided to take Heathrow Express to Paddington. My question is how difficult (read: how many stairs)is it to transfer from Padington to one of the the tube lines that goes to Victoria? Which one would we use? Really appreciate all the help we have had on this site. Thank YOU all.

Consider having a car service meet you at Heathrow and take you directly to Victoria Station. For slightly more than the price of two single tickets on the Heathrow Express to Paddington (which is out of your way to Victoria Sta), you can ride comfortably and not have to worry about ståirs.

A cash payment to Justairports.com for a ride from LHR to Victoria Sta should cost 29 GBP.

I have done the reverse. Since it was PM rush hour I opted for a taxi to Paddington. It was not that expensive. The least expensive option is to take the Piccadilly line to Hammersmith then a simple cross platform change to a District line train to Victoria. I don't know the Victoria Underground station well enough to comment on using it with bags.

Why is a taxi faster than an express train during rush hour. Doesn't a taxi have to sit in traffic whilst a train doesn't have to?
What is the cost of a taxi Heathrow to Victoria vs. the cost of a taxi from Paddington to Victoria?

Marycang: no one mentioned a taxi from LHR to Victoria. That would be VERY expensive. Gavin was talking about doing the trip in reverse - FROM Victoria. i.e. a taxi from Victoria to Paddington and then the train to LHR.

But - in answer to your original question - the Heathrow Express is fast and easy. But IMHO it makes very little sense to take the fairly expensive and comfortable HEX, only to then have to take a long tube ride. It would actually be a bit faster (and easier) to just take the tube from LHR to Victoria. And it would save about £14 per person.

The HEX is great - but really only convenient if you are staying near Paddington or north of the parks/Oxford Street.

If you don't want to book a car service - the tube would be the next easiest way from LHR to Victoria.

You can take the Tube from Paddington to Victoria. Take the Circle Line (via South Kensington).

The answer to your question is that if you take the Bakerloo line south, and cross-platform connect to the Victoria line tube to Victoria at Oxford Circus, you will encounter no staires till you get to Victoria.

Where, whatever line you choose, there is a nasty last run of about a dozen and a half stairs which is a real nuisance if you've got heavy luggage.

As Janis has pointed out, if you're going from Heathrow to Victoria, there's no point in going to Paddington.
Take the Piccadilly Line tube from Heathrow. There are always seats at the front of the train and, since they run every five minutes, there's no harm in waiting for the next one in order to get to the front of the train. Change at Hammersmith by getting off the Piccadilly train and walking ten feet to the other side of the platform where you get on a District Line train to Victoria. This will be easier and a lot cheaper than going via Paddington.