Bus route 423 in London: School Road (TW3) ↔ Heathrow Terminal 5

Bus route 423 in London links “School Road (TW3)” and “Heathrow Terminal 5”. The return journey ends at “Hounslow Bus Station” (150 m from “School Road (TW3)”).

All routes in London →

The route of bus 423

From “School Road (TW3)” to “Heathrow Terminal 5”: 32 stops. On the way: “Fair Street”, “Douglas Road (TW3)”, “Treaty Centre”, “The Bell”, “Hibernia Road Hounslow”, “Wellington Road South”, “Staines Road / Martindale Road”, “Barrack Road”, “Cardington Square”, “Dukes Avenue (TW4)”. Then “Cavalry Barracks”, “Beavers Crescent”, “Basildene Road”, “Beavers Community School”, “Lichfield Road (TW4)”, “Green Lane (TW4)”, “Girling Way”, “Great South West Road Hatton”, “Hatton Cross Station”, “Envoy Avenue”. Before “Heathrow Terminal 5”: “Cranford Lane Hatton Cross”, “Hatton Road North”, “Harlington Corner”, “Mondial Way”, “Sipson Road”, “Bath Road / Newport Road”, “Compass Centre”, “Pinglestone Close”, “Heathrow Park Thistle Hotel”, “Heathrow Close”.

On the way back the bus takes a different route, from “Heathrow Terminal 5” to “Hounslow Bus Station” (32 stops). Only in this direction does it call at “The Square”, “Newport Road”, “Sipson Way / Blunts Avenue”, “Nene Road”, “Boltons Lane”, “New Road Harlington”, “Eastchurch Road”, “Frampton Road”, “Martindale Road Hounslow”, “Cranbrook Road (TW4)” and “Hounslow High Street”. Only in the direction of “Heathrow Terminal 5” does it call at, among others, “Fair Street”, “Douglas Road (TW3)”, “Staines Road / Martindale Road”, “Cardington Square”, “Great South West Road Hatton” and “Cranford Lane Hatton Cross”. For the way back, board nearby: “Fair Street” → “Hounslow High Street” (150 m), “Douglas Road (TW3)” → “Treaty Centre” (250 m), “Staines Road / Martindale Road” → “Martindale Road Hounslow” (100 m) and “Cardington Square” → “Barrack Road” (150 m). Towards “Heathrow Terminal 5”, board nearby: “The Square” → “Heathrow Close” (150 m), “Newport Road” → “Bath Road / Newport Road” (100 m), “Sipson Way / Blunts Avenue” → “Sipson Road” (250 m) and “Nene Road” → “Sipson Road” (250 m).

Other routes along the way

Shared sections with other routes: between “School Road (TW3)” and “Barrack Road” it shares the road with route 116; between “Fair Street” and “Barrack Road” it shares the road with routes 117 and 235; between “Fair Street” and “Staines Road / Martindale Road” it shares the road with route 237.

Connections by stop, in route order:

• “School Road (TW3)”: buses 110, 111, 120, 203, 222, 281, E8, H22, H28, H32, H37 and H98
• “Fair Street” (only towards “Heathrow Terminal 5”): buses 110, 111, 120, 203, 222, 281, E8, H22, H28, H32, H37 and H98
• “Douglas Road (TW3)” (only towards “Heathrow Terminal 5”): buses 110, 111, 120, 203, 222, 281, E8, H20, H22, H28, H32, H37 and H98
• “Treaty Centre”: buses 110, 111, 120, 203, 222, 281, E8, H20, H22, H28, H32 and H98
• “The Bell”: buses 110, 111, 120, 203, 222, 281, E8, H20, H22, H28, H32 and H98
• “Hibernia Road Hounslow”: buses 203, 222, H32 and H98
• “Wellington Road South”: bus H28
• “Girling Way”: buses 203 and 482
• “Great South West Road Hatton” (only towards “Heathrow Terminal 5”): buses 203, 446, 482, 490, 555, BL2, H25, H26, HHL and SL7
• “Hatton Cross Station”: buses 203, 446, 482, 490, 555, BL2, H25, H26, HHL and SL7
• “Envoy Avenue”: buses 203, 446, 482, 490, 555, BL2, H25, H26, HHL and SL7
• “Hatton Road North”: buses 105, 111, 222, 278, H98 and SL9
• “Harlington Corner” (only towards “Heathrow Terminal 5”): buses 105, 111, 222, 278, H98 and SL9
• “Mondial Way” (only towards “Heathrow Terminal 5”): buses 105, 111, 222 and 278
• “Sipson Road” (only towards “Heathrow Terminal 5”): buses 105, 111, 222, 278 and U3
• “Bath Road / Newport Road” (only towards “Heathrow Terminal 5”): buses 105, 111, 278, RA2 and U3
• “Compass Centre”: buses RA2 and U3
• “Pinglestone Close”: buses 350, RA2 and U3
• “Heathrow Park Thistle Hotel”: bus 350
• “Heathrow Terminal 5”: buses 350, 442, 482, 490, H30, HHL, RA2 and X442
• “The Square” (only towards “Hounslow Bus Station”): bus 350
• “Newport Road” (only towards “Hounslow Bus Station”): buses 105, 111, 278, RA2 and U3
• “Sipson Way / Blunts Avenue” (only towards “Hounslow Bus Station”): buses 105, 111, 278 and U3
• “Nene Road” (only towards “Hounslow Bus Station”): buses 105, 111, 222 and 278
• “Boltons Lane” (only towards “Hounslow Bus Station”): buses 105, 111, 222 and 278
• “New Road Harlington” (only towards “Hounslow Bus Station”): buses 105, 111, 222, 278, H98 and SL9
• “Cranbrook Road (TW4)” (only towards “Hounslow Bus Station”): bus H28
• “Hounslow High Street” (only towards “Hounslow Bus Station”): buses 110, 111, 120, 203, 222, 281, E8, H22, H28, H32, H37 and H98
• “Hounslow Bus Station”: buses 110, 111, 120, 203, 222, 281, E8, H22, H28, H32, H37 and H98

Pages for these routes: bus E8, bus H20, bus H22, bus H25, bus H26, bus H28, bus H30, bus H32, bus H37, bus H98, bus HHL, bus SL7, bus SL9, bus U3, bus X442, bus 105, bus 110, bus 111, bus 116, bus 117, bus 120, bus 203, bus 222, bus 235, bus 237, bus 278, bus 281, bus 350.

Passes and concessions

Which passes are available and who travels free is explained on a separate page: how to pay for public transport in London.

Questions about bus 423

Does bus 423 go to “Hatton Cross Station”?

Yes, in both directions.

Where can I change from bus 423 to another bus route?

Most routes stop at “School Road (TW3)” (110, 111, 120, 203, 222, 281, E8, H22, H28, H32, H37 and H98) and “Douglas Road (TW3)” (only towards “Heathrow Terminal 5”; 110, 111, 120, 203, 222, 281, E8, H20, H22, H28, H32, H37 and H98). All other stops with connections are listed above.

Checked on 29 September 2026. Source of the route and stops: Transport for London (TfL).