Heathrow Airport Buses - Free Bus Routes

London Bus routes and local bus services
London and local buses operate from the Heathrow central bus station, terminals 4 and 5 AND Hatton Cross Tube which is to the south of the airport opposite the Hilton Garden Inn Heathrow Airport. As far as travelling into central London goes they are most practical for local transfers since further journeys will normally require one or more bus changes. All of these buses are within the area subsidised by BAA so as to be able to offer free travel around the local Heathrow area. However they are only free within the airport perimeter.
Heathrow Freeflow Free Fare Zone
These are the bus routes serving Heathrow and the immediate vicinity which are a free service. However they are only free for stops within the free fare zone. The sections that are free for bus travel at Heathrow airport are part of larger routes and not dedicated Heathrow buses but part of the public transport system.  The free travel zone is sponsered by the owners of Heathrow Airport, BAA. Very roughly the zone stretches on the North side from the Sheraton Heathrow Colnbrook to the Sheraton Skyline along the Bath Road. On the East side following the path of the perimeter road down to the Hilton Garden Inn Heathrow Airport. Then on the South side along the Southern Perimeter Road out to the World Cargo centre.
When you board the bus tell the driver your destination. If its outside the free zone you will be asked for a fare. These routes are all part of normal services which go much further than the vicinity of the airport.

*TfL Bus Passes, Travelcards, Saver Tickets and Oyster Cards are NOT accepted on those services marked with an asterix*.
Central Bus Station serves terminals 2 and 3.

Routes from within Heathrow Airport Grounds:
*51 (not part of freeflow zone) Terminal 5 > Chertsey Heriot Road > Chertsey Clay Corner > Addlestone Victory Park > Addlestone Tesco > Weybridge Ship > Weybridge Station > Brooklands Road Summers Close > Byfleet Plough > Manor Farm Sanway Road > Byfleet Youth Club > Brooklands Tesco
*60/61 (not part of freeflow zone) terminal 5 to Wraysbury, Slough and Eton Wick
Holiday Inn Bath Road> Park Inn Heathrow> Sheraton Heathrow Colnbrook
*71 (not part of freeflow zone) terminal 5 to Staines, Windsor and Slough Part of the SlouthHeathrow 7 series routes
Staines Bus Station > Thorpe Road Roundabout > Pooley Green Glebe Road> Egham Arndale Way > Royal Holloway College > Englefield Green Holly > Tree > Old Windsor Bells of Ouzeley > Windsor Hospital > Windsor Parish Church > Slough Bus Station
*75: (central bus station) runs to Slough and Maidenhead from 5.00 till 23.20 (check timetable for holiday and weekends)
 via >Compass Centre Bath Road >Colnbrook Brands Hill >Axis Park Tamar Way >Langley Harrow > Slough Bus Station >Salt Hill Three Tuns >Bath Road Dover Road >Bath Road St Andrews Way > Bath Road Sainsburys >Maidenhead Bridge >Maidenhead Frascati Way
*76 (central bus station) to Slough, Cippenham and Slough Langley, Mondays to Saturdays except evenings
(75/76): Heathrow Police Station> Holiday Inn Bath Road> Hilton Garden Inn Heathrow Airport >Compass Centre Bath Road > Sheraton Heathrow Colnbrook (Thistle Heathrow is 100 yard walk south from here)
*77 (not part of freeflow zone) from terminal 5 to Slough and Windsor, Langley, Slough, Windsor and Dedworth
Colnbrook, The Greyhound > Sutton Lane > High Street Langley > Ditton Park Road > Cedar Way > Drake Avenue > Upton Court Road > Kaywood Close > Langley Road > Sussex Place > Wexham Road > Queensmere Shopping Centre > Slough Bus Station > Windsor Road High Street > Chalvey / Albert Street > Chavely / McDonald's > Windsor Boys School > Windsor / Arthur Road > Windsor / Peascod Street > Windsor Part of the SlouthHeathrow 7 series routes
*78 (not part of freeflow zone) from terminal 5 to slough > and Britwell (also Burnham evenings and Sundays)
Colnbrook Brands Hill, Sutton Lane > Axis Park Hurricane Way > Langley Tamar Way > Trelawney Avenue Shops > Slough Bus Station > Salt Hill Three Tuns > Farnham Road Essex Avenue > Britwell Shops Part of the SlouthHeathrow 7 series routes
90 (Hatton Cross station) to Feltham and Northolt
Feltham > Hatton Cross Buss Station (Hilton Garden Inn Heathrow Airport) > Harlington Corner (Hilton Garden Inn Heathrow Airport, Hilton Garden Inn Heathrow Airport with a short walk) > Yeading > Northolt
105 (Central Bus Station) to Greenford (24 hour service)
111 (Central Bus Station) to Kingston via Hounslow (24 hr)
140 (Central Bus Station) to Harrow Weald (24 hour service) (via Hayes)
(105/111/140) BA Compass centre> Holiday Inn Bath Road> Park Inn Heathrow> Hilton Garden Inn Heathrow Airport> Renaissance Heathrow> Heathrow Academy> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline
(105/111 also passes and stops at Hilton Garden Inn Heathrow Airport, Hilton Garden Inn Heathrow Airport, Premier Inn Bath Road, Hilton Garden Inn Heathrow Airport and Hilton Garden Inn Heathrow Airport but they are not within the Freeflow zone, 100 yard walk from 140 Harlington Corner stop)
(111/140) also takes in>Hilton Garden Inn Heathrow Airport
 203 (Hatton Cross) to Hounslow and Staines
285 (central bus station and Hatton Cross) to Kingston (24 hour service): This also is the Railair service from Heathrow to Feltham. More details on the 285 Railair here.
Hilton Garden Inn Heathrow Airport > Holiday Inn Bath Road> Renaissance Heathrow> Park Inn Heathrow> Hilton Garden Inn Heathrow Airport> Heathrow Academy> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline> World Business centre> BA East Base> Hilton Garden Inn Heathrow Airport> Hattons Cross Station
350 Terminal 5 to West Drayton, Stockley Park, Hayes & Harlington
Dukes Bridge> Sheraton Heathrow Colnbrook> Hatch Lane
423 (Terminal 5 and Hatton Cross) to Beavers Farm, Hounslow bus station
Heathrow Lodge> Thistle Heathrow>  Sheraton Heathrow Colnbrook > Hilton Garden Inn Heathrow Airport > Holiday Inn Bath Road > Renaissance Heathrow> Park Inn Heathrow> Heathrow Academy> Hilton Garden Inn Heathrow Airport> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline> World Business centre> BA East Base> Hilton Garden Inn Heathrow Airport> Hattons Cross  
441 (central bus station and terminal 5 (anti-clockwise)) to Stanwell, Staines, Egham and Englefield Green
Terminal 5 shuttle bus  (this part of the route is within the freeflow zone, see above). Stops at N5 car park on route to terminal 5. Terminates at Englefield Green and goes via Staines and Egham.
482 Terminal 5 to Terminal 4 then Heston, Southall station
Terminal 5 >Heathrow Cargo Centre > Terminal 4 > Hattons Cross  > Hilton Garden Inn Heathrow Airport
490 (from terminals 4 and 5 and Hattons Cross) to Richmond (from Hatton Cross tube) also Feltham and North Sheen
Hilton Garden Inn Heathrow Airport> Hattons Cross >  Terminal 4 > Heathrow Cargo Centre> Terminal 5
555 (central bus station and terminal 4) to Sunbury Village - Stanwell, Ashford, Sunbury Cross, Shepperton and Walton-on-Thames
Terminals 2,3 > Heathrow Airport North Police Station (with a short walk suitable for Hilton Garden Inn Heathrow Airport, Hilton Garden Inn Heathrow Airport) > Harlington Corner > Hatton Cross Bus Station (with a short walk suitable for Hilton Garden Inn Heathrow Airport)> Terminal 4
557 (from Hatton Cross and terminal 4 only) to Stanwell, Ashford, Sunbury, Shepperton, Chertsey and Addlestone
(555) BA Compass centre> Heathrow Police Station> Renaissance Heathrow> Park Inn Heathrow> Heathrow Academy> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline> (555,557) Hilton Garden Inn Heathrow Airport> Hattons Cross >  Terminal 4
*724 (from central bus station, terminal 4 and terminal 5) This is a Green Line service
Heathrow Airport Terminal 5 > Heathrow Airport Central Bus Stn > Uxbridge Station > Denham Station > Rickmansworth Station > Watford Junction Station > St Albans City Station > Hatfield Station > Welwyn Garden City Bus Station > Harlow Bus Station
A10 (central bus station) to Stockley Park, Hillingdon and Uxbridge
A40 (central bus station) to Uxbridge, Gerrards Cross, Beaconsfield and High Wycombe (not evenings)
H25 from Hatton Cross to Hanworth
Hatton Cross Station> Hilton Garden Inn Heathrow Airport> BA Link Centre
H26 from Hatton Cross to Feltham
N9 Night Bus from terminal 5 and Central Bus Station. First us 23.55, Last bus 4.55 (Saturday 5.25 weekends)
T5> BA Compass centre> Central Bus Station> Heathrow Police Station> Hilton Garden Inn Heathrow Airport > Holiday Inn Bath Road> Renaissance Heathrow> Park Inn Heathrow> Heathrow Academy> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline (also passes Hilton Garden Inn Heathrow Airport, Hilton Garden Inn Heathrow Airport, Premier Inn Bath Road and Hilton Garden Inn Heathrow Airport but they are not within the Freeflow zone) >Hounslow> Brentford> Hammersmith> Kensington> Central London> Aldwych
U3 Central Bus station to Uxbridge
Heathrow Police Station> Park Inn Heathrow> Holiday Inn Bath Road> Hilton Garden Inn Heathrow Airport
X26 (from Hattons Cross and central bus station) to West Croydon (Metrobus service) via Feltham
Heathrow Police Station> Renaissance Heathrow> Park Inn Heathrow> Heathrow Academy> Radisson Heathrow> Marriott Heathrow> Sheraton Skyline> (555,557) Hilton Garden Inn Heathrow Airport> Hattons Cross

Hotels with bus routes (free unless stated)
Heathrow Lodge 423
from terminals 2 and 3: 1.8 miles (1.5 km), from terminal 4: 2.4 miles (3.9 km), from terminal 5: 0.5 miles (0.8 km)
Hilton Garden Inn Heathrow Airport 90/285/423/555
from terminals 2 and 3: 1.5 miles (2.4 km), from terminal 4: 1.3 miles (2.1 km), from terminal 5: 3.1 miles (5 km)
Hilton Garden Inn Heathrow Airport 90/105/111/N9 Hotel is Outside the area of the Free Fare Scheme
from terminals 2 and 3: 1.1 miles (1.8 km) , from terminal 4: 1.6 miles (2.6 km), from terminal 5: 2.5 miles (4 km)
Hilton Garden Inn Heathrow Airport 75/76/105/285/423//N9/U3
from terminals 2 and 3: 0.7 miles, from terminal 4: 1.6 miles, from terminal 5: 1.6 miles
Hilton Garden Inn Heathrow Airport 75/76/111/140/285/423/N9/U3
from terminals 2 and 3: 0.9 miles (1.5 km), from terminal 4: 1.8 miles (2.9 km), from terminal 5: 1.1 miles (1.8 km)
Hilton Garden Inn Heathrow Airport 203/423 Hotel is Outside the area of the Free Fare Scheme
from terminals 2 and 3: 3.7 miles, from terminal 4: 3.4 miles, from terminal 5: 5.3 miles
Hilton Garden Inn Heathrow Airport 90/105/111/ N9 Hotel is Outside the area of the Free Fare Scheme
from terminals 2 and 3: 1.2 miles, from terminal 4: 1.7 miles, from terminal 5: 2.7 miles
Hilton Garden Inn Heathrow Airport 105/111/140/285/423/555
from terminals 2 and 3: 0.7 miles, from terminal 4: 1.5 miles, from terminal 5: 1.9 miles
Hilton Garden Inn Heathrow Airport 285/423/482/490/555/H25/X26
from terminals 2 and 3: 1.5 miles, from terminal 4: 1.3 miles, from terminal 5: 3.1 miles
Hilton Garden Inn Heathrow Airport 105/111/140/285/423/555/N9/X26
from terminals 2 and 3: 0.9 miles, from terminal 4: 1.5 miles, from terminal 5: 2.4 miles
Hilton Garden Inn Heathrow Airport 105/111/N9 Hotel is Outside the area of the Free Fare Scheme
from terminals 2 and 3: 1.7 miles, from terminal 4: 2 miles, from terminal 5: 3.3 miles
Park Inn Heathrow 105/111/140/285/423/555/N9/U3
from terminals 2 and 3: 0.7 miles, from terminal 4: 1.6 miles, from terminal 5: 1.8 miles
Premier Inn Bath Road 105/111/N9 (outside free zone)
from terminals 2 and 3: 1.3 miles, from terminal 4: 1.8 miles, from terminal 5: 2.9 miles
Radisson Heathrow 105/111/140/285/423/555/N9
from terminals 2 and 3: 0.8 miles, from terminal 4: 1.5 miles, from terminal 5: 2.2 miles
Hilton Garden Inn Heathrow Airport 105/111/N9 Hotel is Outside the area of the Free Fare Scheme
from terminals 2 and 3: 1.9, from terminal 4: 2.1 miles, from terminal 5: 3.5 miles
Renaissance Heathrow 105/111/140/285/423/555/N9/X26
from terminals 2 and 3: 0.7 miles, from terminal 4: 1.5 miles, from terminal 5: 2 miles
Sheraton Heathrow Colnbrook 75/76/350/423
from terminals 2 and 3: 1.4 miles, from terminal 4: 2.1 miles, from terminal 5: 0.8 miles
Sheraton Skyline 105/111/140/285/423/555/N9/X26
from terminals 2 and 3: 0.9 miles, from terminal 4: 1.6 miles, from terminal 5: 2.4 miles
Hilton Garden Inn Heathrow Airport 75/76 (100 yards walk)/ 423
from terminals 2 and 3: 1.4 miles, from terminal 4: 2.1 miles, from terminal 5: 0.7 miles

Other Hotels
The Holiday Inn M4/J4 is not on a bus route directly to the airport. The nearest point for a free ride is the Park Inn Heathrow Bus Stop which is a 1 mile walk or a 222 bus will get you to the Park Inn for less than the Heathrow Hoppa and you can then get the free bus ride as above.

>>>See Bus Fares
Standard London Bus/Tram Fare is £1.50 per adult
You can make a second bus or tram journey for free within one hour of touching in for your first bus or tram journey (if using pay as you go).
Buses are cash free, trams have a £2.60 cash fare
under 16's travel free
Hopper fares mean a second journey on a bus or tram within 1 hour of the first journey using a contacless payment are free.
If you have a Bus and Tram Discount photocard you can pay 75 pence per journey with a £2.25 cap but restrictions apply including you must live in London and receiving certain benefits

Terminal 1,2,3 (central Bus Station) served by
75/76 - 77 - 78 - 105 -111 -140 - 285 - 441 - 555 - 724 - A10 - A40 - N9 - U3 - X26
Terminal 4 served by
482 - 490 - 555 - 557
Terminal 5 served by
60/61 - 71 - 350 - 423 - 441 - 482 - 490 - 724 - N9

Terminal to Terminal (free journey)
Central Bus station (terminals 2, 3) to terminal 4: 555
Central Bus station (terminals 2, 3) to terminal 5: 441, 724, N9
Terminal 4 to 5: 482, 490

>>>timetables
This map >>>Local bus Map, will show you a simplified diagram of how these Heathrow free bus routes operate.
This map >>>All local Routes will show you all London Bus routes around Heathrow (including those not actually serving the airport)
This map >>>Free Bus Heathrow Routes the Firstgroup bus company issues map
This map >>>All local Routes in more detail but covering a smaller area

Detailed maps showing freeflow zone and bus from each terminal together with their stands
>>>Central Bus Station (Terminals 2 and 3)
>>>Terminal 4
>>>Terminal 5

Metrobus
Metrobus operate the X26 service to West Croydon from 06.00 till 22.00. Runs 7 days a week except Christmas.

X26:
Heathrow to Croydon
Heathrow Airport Central > Hatton Cross Stn, Bus Station > Teddington, Broad Street > Kingston, John Lewis > Kingston, Cromwell Rd Bus Stn > New Malden, Fountain > Worcester Park Station > North Cheam, Cheam Common Rd > Cheam, Broadway > Sutton, Police Station > Carshalton, High Street > Wallington Green > East Croydon Station > West Croydon, Bus Station
Metrobus route information

Green Line
Heathrow to Harlow
Green Line run in conjunction with Arriva. The Green Line 724 route runs from Heathrow out to Harlow along the following route.
724 - Heathrow Airport, Central Bus Stn > Hillingdon Hospital, Heath Road > Brunel University, Kingston Lane > Uxbridge, Belmont Road > Denham, Station > Maple Cross, The Cross > Rickmansworth Station > Croxley Met. Station > Watford, Clarendon Road, stop 16 > Watford Junction Station > Garston, Watford Bus Garage > Chiswell > Green, Three Hammers > St Albans, St Peters Street, stop 13 > St Albans City Station, Interchange > Oaklands, Colney Heath Lane > Hatfield, Town Centre, Market Place
Hatfield, Rail Station, forecourt > Welwyn Garden City, QEII Hospital > Welwyn Garden City, Bus Station > Panshanger, Watchlytes > Birch Green > Hertford North Station
Hertford Bus Station, bay 4 > Ware, London Rd, opp. College > Ware Station > St Margarets Station > Harlow, Bus Station
On weekdays the service runs from 06.20 till 22.05. 09.20 till 21.20 on Sundays. Expect the full journey to take around 2hrs 30 minutes.

Greenline Website

Slough Heathrow Series 7
71, 75, 76, 77 and 78: The 7-series is the Firstgroup bus service that links Heathrow with towns and villages to the west of the airport. Some bus services run to/from to Heathrow's Central Bus Station whilst others operate direct to and from Terminal 5. Links with Windsor, Slough and Maidenhead.

Timetables for Slough Heathrow 7 series

For more specific bus information see the appropriate section from below
Heathrow to London
Heathrow to Gatwick
Heathrow to Luton
Heathrow to Stansted