Originally Posted by
Dicksbits
Is it easier to get the bus than jump on the Heathrow Express?
The landside bus? No, takes too long.
The airside bus is right by Flight Connections and runs every 6 minutes and it's a 12 minute journey. Since HEX is only once every 15 minutes, and involves quite a schlep at the T3 end, it's always going to lose the race. Underground is a bit more frequent (every 8 minutes for most of the day) but you still have the schlep and you need an Oyster / contactless credit or debit card.