Heathrow to Paddington Trains
 

There are two train services from Heathrow to Paddington in addition to the London Tube. The Express runs every 15 minutes (21 GBP for single ticket) or the Paddington Connect (only 9.90 GBP for single ticket however it runs only once per hour). I was not in a hurry so I chose the Connect, then ended up waiting 50 minutes for the next train. The Tube would have gotten me there sooner. Once at Paddington I bought a day ticket for the Tube to get around. So I would have been better off to take the Tube, save myself 9.90 GBP, as well as frustration with my dumb decision.

>>There are two train services from Heathrow to Paddington in addition to the London Tube.<<

The tube doesn't got to Paddington w/o changes . . .

For most visitors neither train is a good idea . . . Only IF they are staying at Paddington/Bayswater.

It's been awhile seen I have been in London, didn't it used to run every 30 minutes?

I can tell you from personal experience earlier THIS WEEK that the usual "recommendations" and from one of the participants on THIS thread that ALWAYS seems to involve getting some car service into town from Heathrow can be a lousy idea, also.'
Why? Because of morning traffic (assuming that is when most folks arrive); earlier this week it took our "car" over an hour and a half to get from Heathrow to The Strand so you do the math on that one.

It depends where your hotel us. If you are staying near Paddington then the Heathrow Express ( which runs every 15 mins I think) or the slightly cheaper Heathrow Connect make sense.

If your hotel is somewhere else it probably makes sense just to take the Piccaddily line into central London. This is the cheapest option for public transit.

"didn't it used to run every 30 minutes?"

Still does. From the T1-3 station.

Connection to it from the T4 and T5 stations on the HEX is free. Either there was a cancelled train on the day then poster used it, or he failed to understand the system.

I always take the Piccadilly line when I fly into Heathrow. I usually stay either in Bloomsbury or near Victoria Station, and the Piccadilly line is convenient for both. If I'm going to Victoria Station, I change at Hammersmith, which is just a matter of crossing the platform to get the Circle or District line. It's the easiest way to go, and probably the fastest. I've never even considered a car service.

I once, on one of my first trips to London, took the Heathrow Express when staying in Bloomsbury. It got me to Paddington fast, but the rest of the trip (by taxi) took forever, partly because there was a tremendously long queue for taxis. Then the drivers started asking people to share taxis, which I did, and of course I was dropped off last.