You can take the "Hotel Hoppa H2" from terminal 1, 2, 3 or "Hotel Hoppa H54" from terminal 5. The time table is available from the following site.
http://www.heathrowairport.com/portal/page/Heathrow^General^To+and+from+Heathrow^Hotel+transfers/b2382ed4f4599110VgnVCM10000036821c0a____/448c6a4c7f1b0010VgnVCM200000357e120a____/
The fee is GBP4.
Heathrow Hotel Hoppa
The most convenient transfer between your hotel and Heathrow airport
£4 each way and KIDS GO FREE!
Up to 2 children under 15 years of age travel free when accompanied by a fare paying adult.
Serves Terminals 1, 2, 3, 4 and 5Services operate from right outside the terminal buildingsTravel in comfort with plenty of luggage spaceThe Hoppa service operates from 04:00 to Midnight (approximate times)Book online today using the journey planner above, or alternatively you can buy tickets from the driver, at your hotel or from our onsite self- service ticket machines.
Hotels where you can catch the Heathrow Hotel Hoppa:
Comfort InnCrowne PlazaEasy Hotel (On demand only - book at hotel)Heathrow / Windsor MarriotHoliday Inn ArielHoliday Inn (M4, Junction 4)Holiday Inn (A4, Bath Road)Holiday Inn HeathrowIbisJurys InnLondon Heathrow MarriottNovotel
Quality HotelPark InnPremier Travel Inn (M4, Junction 4)Premier Travel Inn (A4, Bath Road)Ramada London HeathrowRadisson EdwardianRenaissanceSheraton HeathrowSheraton SkylineThistle London HeathrowTravelodge HeathrowTravelodge Terminal 5