View source for Bus Service 27

{{Travel Advisory|S27=showonly|SengkangHougangBCM=showonly}}
{{Infobox
 |title=Service 27
 |img=[[File:SBS6054G 27.jpeg|centre|300px]]
 |info=
  {{Infohead|Route Information}}
  {{Infoline|Route|Hougang Central Interchange ↺ Changi Airport Terminal 2 (Loop)}}
  {{Infoline|Route Length|44.4 km}}
  {{Infoline|Travelling Time|120 mins<br><small>(2 h)</small>}}
  {{Infoline|Operator|{{SBST}}<br>([[Sengkang – Hougang Bus Package]])}}
}}

'''Bus Service 27''' serves Changi Airport, linking the Airport Passenger Terminal Buildings (PTBs) 1, 2 & 3 with the residential towns of Tampines, Sengkang, Buangkok and Hougang. By using the Tampines Expressway (TPE) between Tampines and Sengkang, it serves as an important route connecting the two towns. In fact, most of service 27’s demand comes from the Sengkang – Tampines sector, with Short Trip Service 27A supplementing morning peak demand towards Tampines and evening peak downroutes from Tampines Avenue 4 heading back to Hougang.

From Tampines Central, Service 34 also heads to the Airport, but takes a longer route through Tampines East. In addition, Service 72 offers comparable travel time between Tampines Central and Hougang, but does not service Buangkok or Sengkang.

'''Short-Trip Service 27A''' operates during Weekday Morning Peak hours and supplements the high demand for Service 27 from Sengkang to Tampines. During Weekday Evening Peak hours, numerous special departures are operated in the reverse direction, from Tampines Avenue 4 (UOB Tampines Ctr) to Hougang Ctrl Int.

===Bus Duty & Fleet===
{| class='wikitable' style='text-align:center;'
|+Service 27/27A
!rowspan=2 style='{{CSS/SBST|xfc=|xbc=}}'|Depot
!colspan=2 style='{{CSS/SBST|xfc=|xbc=}}'|Fleet Size
!rowspan=2 colspan=2 style='{{CSS/SBST|xfc=|xbc=}}'|Fleet
|-
!style='{{CSS/SBST|bgop=c0|xfc=|xbc=}}'|27
!style='{{CSS/SBST|bgop=c0|xfc=|xbc=}}'|27A
|-
!rowspan=2 style='{{CSS/SBST|bgop=c0|xfc=|xbc=}}'|Hougang Depot (HGDEP)
|rowspan=2|35
|rowspan=2|12
!35 Single Deckers
|-
|
'''SBS6066Y SBS6068S SBS6069P SBS6070J SBS6071G SBS6090B SBS6100G SBS6124M SBS6125K SBS6130U SBS6135G SBS6143H SBS6147Y SBS6215J SBS6237X SBS6389R SBS6637A SBS6638Y SBS6640P SBS6705L SBS6706J SBS6713M SBS6715H SBS6723J SBS6726B SBS6728X SBS6733E SBS6791L SBS6822G SBS6831E SBS6846M SBS6859B SBS6866E SBS6867C SBS6870S'''<br>Mercedes-Benz O530 Citaro
|}

{|class="wikitable mw-collapsible mw-collapsed"
!Notes
|-
|
* '''1 bus''' will perform sharebus trips on Feeder {{Bus/325}} during Weekdays AM Peak, AM Off-Peak and PM Peak.
* This service practises jumpbus on Weekdays.
* All Service 27 buses are deployed on a rotation basis.
* '''All Service 27 buses''' practise overnight parking at '''Sengkang West Depot (SWDEP)'''.
|}

===Route Information===
====Frequency====
{| class='wikitable' style='text-align:center;'
!style='{{CSS/SBST|xfc=|xbc=}}'|Period
!style='{{CSS/SBST|xfc=|xbc=}}'|AM Peak<br><small>(First Bus - 08:30)</small>
!style='{{CSS/SBST|xfc=|xbc=}}'|AM Off Peak<br><small>(08:31 - 16:59)</small>
!style='{{CSS/SBST|xfc=|xbc=}}'|PM Peak<br><small>(17:00 - 19:00)</small>
!style='{{CSS/SBST|xfc=|xbc=}}'|PM Off Peak<br><small>(19:01 - Last Bus)</small>
|-
!Loop Service
|06 - 10 minutes
|06 - 09 minutes
|06 - 11 minutes
|08 - 11 minutes
|}

====Special Departures====
*{{BS67261}} → {{BS64009}}
**'''Weekdays:''' 05:00 & 05:10
**'''Saturdays:''' 05:05 & 05:15
**'''Sundays & Public Holidays:''' 05:05, 05:17 & 05:29
*{{BS95109}} → {{BS64009}}
**'''Saturdays:''' 18:44, 20:10, 22:06, 22:27 & 23:13
**'''Sundays & Public Holidays:''' 18:49, 20:16, 22:16, 22:30 & 23:10
*{{BS76131}} → {{BS64009}}
**'''Weekdays:''' 15:27, 15:34, 15:41, 15:48, 15:55, 16:01, 16:07, 16:19, 16:26, 16:32, 16:38, 16:50, 16:56, 17:02, 17:09, 17:15, 17:21, 17:27, 17:40, 17:46, 17:53, 18:00, 18:08, 18:16, 18:25, 18:33, 18:40, 18:48, 18:55, 19:03, 19:11, 19:19, 19:28, 19:43, 20:21, 20:57, 21:35, 22:16, 22:52, 23:30 & 23:49
**'''Saturdays:''' 08:53, 09:08, 17:47, 18:00, 19:19, 19:28, 20:37, 20:44, 21:48, 22:02, 23:09, 23:26, 00:23 & 00:36
**'''Sundays & Public Holidays:''' 18:08, 18:45, 19:42, 20:01, 20:51 & 21:10

<div style='background-color:#ff000011;padding:0.5em;min-height:300px;'>
=====Service 27A=====
[[File:SBS6731K 27A.jpeg|thumb|right|300px|SBS6731K on Short-Trip Service 27A]]
*{{BS67261}} → {{BS76139}}
**'''Weekdays (except Public Holidays):''' 05:10, 06:12, 06:18, 06:24, 06:30, 06:37, 06:40, 06:46, 06:52, 07:06, 07:13, 07:21, 07:29, 07:36, 07:43, 07:50, 07:56, 08:03, 08:10, 08:17, 08:24, 08:30, 08:40, 08:46, 08:52, 08:59, 09:07, 09:15, 09:22, 09:29, 09:36 & 09:39
</div>

====Loop Service====
<div class="mw-collapsible">
<p class='exc'>[Show/Hide Full Route Details]</p>
{| class="wikitable"
!rowspan=2 colspan=2 style='{{CSS/BUS|xfc=|xbc=}}'|Bus Stops
!rowspan=2 style='{{CSS/BUS|xfc=|xbc=}}'|Nearby Attraction
!colspan=2 style='{{CSS/BUS|xfc=|xbc=}}'|Weekdays
!colspan=2 style='{{CSS/BUS|xfc=|xbc=}}'|Saturdays
!colspan=2 style='{{CSS/BUS|xfc=|xbc=}}'|Suns/PH
|-
!style='{{CSS/LTA|xfc=|xbc=}}'|First bus!!style='{{CSS/LTA|xfc=|xbc=}}'|Last bus
!style='{{CSS/LTA|xfc=|xbc=}}'|First bus!!style='{{CSS/LTA|xfc=|xbc=}}'|Last bus
!style='{{CSS/LTA|xfc=|xbc=}}'|First bus!!style='{{CSS/LTA|xfc=|xbc=}}'|Last bus
|-
|colspan=2|{{BS64009|int=(Berth B3)}}
|{{NE14| }}
|style='text-align:center'|05:10||style='text-align:center'|23:50||style='text-align:center'|05:15||style='text-align:center'|23:50||style='text-align:center'|05:30||style='text-align:center'|23:50
|- class='ex'
|colspan=2|{{BS64397}}
|
|style='text-align:center'|05:12||style='text-align:center'|23:52||style='text-align:center'|05:17||style='text-align:center'|23:52||style='text-align:center'|05:32||style='text-align:center'|23:52
|- class='ex'
|colspan=2|{{BS64389}}
|
|style='text-align:center'|05:14||style='text-align:center'|23:54||style='text-align:center'|05:19||style='text-align:center'|23:54||style='text-align:center'|05:34||style='text-align:center'|23:54
|- class='ex'
|colspan=2|{{BS64379}}
|
|style='text-align:center'|05:16||style='text-align:center'|23:55||style='text-align:center'|05:20||style='text-align:center'|23:56||style='text-align:center'|05:36||style='text-align:center'|23:55
|- class='ex'
|colspan=2|{{BS64579}}
|
|style='text-align:center'|05:18||style='text-align:center'|23:57||style='text-align:center'|05:22||style='text-align:center'|23:58||style='text-align:center'|05:38||style='text-align:center'|23:57
|-
|colspan=2|{{BS67609}}
|{{NE15| }}
|style='text-align:center'|05:22||style='text-align:center'|00:01||style='text-align:center'|05:26||style='text-align:center'|00:02||style='text-align:center'|05:42||style='text-align:center'|00:01
|-
|{{BS67261}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:00||style='text-align:center'|00:03||style='text-align:center'|05:05||style='text-align:center'|00:04||style='text-align:center'|05:05||style='text-align:center'|00:03
|- class='ex'
|{{BS67209}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:01||style='text-align:center'|00:04||style='text-align:center'|05:06||style='text-align:center'|00:05||style='text-align:center'|05:06||style='text-align:center'|00:04
|- class='ex'
|{{BS67199}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:02||style='text-align:center'|00:05||style='text-align:center'|05:07||style='text-align:center'|00:05||style='text-align:center'|05:07||style='text-align:center'|00:05
|- class='ex'
|{{BS67189}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:03||style='text-align:center'|00:06||style='text-align:center'|05:08||style='text-align:center'|00:06||style='text-align:center'|05:08||style='text-align:center'|00:06
|- class='ex'
|{{BS67249}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:05||style='text-align:center'|00:07||style='text-align:center'|05:10||style='text-align:center'|00:07||style='text-align:center'|05:10||style='text-align:center'|00:07
|-
|{{BS67259}}
!{{SWT|27A|#f00}}
|{{SE1| }}
|style='text-align:center'|05:06||style='text-align:center'|00:08||style='text-align:center'|05:11||style='text-align:center'|00:07||style='text-align:center'|05:11||style='text-align:center'|00:08
|- class='ex'
|{{BS65061}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:07||style='text-align:center'|00:09||style='text-align:center'|05:12||style='text-align:center'|00:08||style='text-align:center'|05:12||style='text-align:center'|00:09
|- class='ex'
|{{BS65199|int=(Berth 1A)}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:08||style='text-align:center'|00:10||style='text-align:center'|05:13||style='text-align:center'|00:09||style='text-align:center'|05:13||style='text-align:center'|00:10
|- class='ex'
|{{BS75359}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:15||style='text-align:center'|00:17||style='text-align:center'|05:19||style='text-align:center'|00:18||style='text-align:center'|05:19||style='text-align:center'|00:16
|- class='ex'
|{{BS75369}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:16||style='text-align:center'|00:18||style='text-align:center'|05:20||style='text-align:center'|00:19||style='text-align:center'|05:20||style='text-align:center'|00:17
|- class='ex'
|{{BS75319}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:17||style='text-align:center'|00:19||style='text-align:center'|05:21||style='text-align:center'|00:20||style='text-align:center'|05:21||style='text-align:center'|00:17
|- class='ex'
|{{BS75299}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:18||style='text-align:center'|00:20||style='text-align:center'|05:22||style='text-align:center'|00:21||style='text-align:center'|05:22||style='text-align:center'|00:18
|- class='ex'
|{{BS75289}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:19||style='text-align:center'|00:21||style='text-align:center'|05:23||style='text-align:center'|00:22||style='text-align:center'|05:23||style='text-align:center'|00:19
|- class='ex'
|{{BS75279}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:23||style='text-align:center'|00:22||style='text-align:center'|05:24||style='text-align:center'|00:23||style='text-align:center'|05:24||style='text-align:center'|00:20
|- class='ex'
|{{BS76549}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:24||style='text-align:center'|00:24||style='text-align:center'|05:26||style='text-align:center'|00:25||style='text-align:center'|05:25||style='text-align:center'|00:22
|- class='ex'
|{{BS76191}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:26||style='text-align:center'|00:26||style='text-align:center'|05:28||style='text-align:center'|00:27||style='text-align:center'|05:27||style='text-align:center'|00:24
|-
|{{BS76149}}
!{{SWT|27A|#f00}}
|{{EW2| }}
|style='text-align:center'|05:28||style='text-align:center'|00:28||style='text-align:center'|05:30||style='text-align:center'|00:29||style='text-align:center'|05:29||style='text-align:center'|00:26
|-
|{{BS76139}}
!{{SWT|27A|#f00}}
|
|style='text-align:center'|05:29||style='text-align:center'|00:29||style='text-align:center'|05:32||style='text-align:center'|00:30||style='text-align:center'|05:31||style='text-align:center'|00:27
|- class='ex'
|colspan=2|{{BS76069}}
|
|style='text-align:center'|05:31||style='text-align:center'|00:31||style='text-align:center'|05:34||style='text-align:center'|00:32||style='text-align:center'|05:33||style='text-align:center'|00:29
|- class='ex'
|colspan=2|{{BS95151}}
|
|style='text-align:center'|05:41||style='text-align:center'|00:41||style='text-align:center'|05:43||style='text-align:center'|00:41||style='text-align:center'|05:42||style='text-align:center'|00:37
|- class='ex'
|colspan=2|{{BS95011}}
|
|style='text-align:center'|05:42||style='text-align:center'|00:42||style='text-align:center'|05:44||style='text-align:center'|00:42||style='text-align:center'|05:43||style='text-align:center'|00:38
|-
|colspan=2|{{BS95109|int=(Berth 3)}}
|{{CG2| }}<br>Changi Airport Terminal 3<br>Jewel Changi Airport
|style='text-align:center'|05:44||style='text-align:center'|00:44||style='text-align:center'|05:47||style='text-align:center'|00:44||style='text-align:center'|05:46||style='text-align:center'|00:40
|-
|colspan=2|{{BS95029|int=(Berth 3)}}
|Changi Airport Terminal 1<br>Jewel Changi Airport
|style='text-align:center'|05:48||style='text-align:center'|00:47||style='text-align:center'|05:50||style='text-align:center'|00:47||style='text-align:center'|05:50||style='text-align:center'|00:44
|-
|colspan=2|{{BS95129|int=(Berth 4)}}
|{{CG2| }}<br>Changi Airport Terminal 2<br>Jewel Changi Airport
|style='text-align:center'|05:51||style='text-align:center'|00:51||style='text-align:center'|05:54||style='text-align:center'|00:51||style='text-align:center'|05:53||style='text-align:center'|00:48
|- class='ex'
|colspan=2|{{BS95019}}
|
|style='text-align:center'|05:54||style='text-align:center'|00:53||style='text-align:center'|05:57||style='text-align:center'|00:54||style='text-align:center'|05:55||style='text-align:center'|00:50
|- class='ex'
|colspan=2|{{BS95159}}
|
|style='text-align:center'|05:55||style='text-align:center'|00:54||style='text-align:center'|05:58||style='text-align:center'|00:56||style='text-align:center'|05:57||style='text-align:center'|00:51
|- class='ex'
|colspan=2|{{BS76061}}
|
|style='text-align:center'|06:06||style='text-align:center'|01:03||style='text-align:center'|06:08||style='text-align:center'|01:05||style='text-align:center'|06:07||style='text-align:center'|01:00
|- class='ex'
|colspan=2|{{BS76131}}
|
|style='text-align:center'|06:06||style='text-align:center'|01:04||style='text-align:center'|06:09||style='text-align:center'|01:06||style='text-align:center'|06:08||style='text-align:center'|01:01
|-
|colspan=2|{{BS76141}}
|{{EW2| }}
|style='text-align:center'|06:09||style='text-align:center'|01:05||style='text-align:center'|06:11||style='text-align:center'|01:08||style='text-align:center'|06:10||style='text-align:center'|01:02
|- class='ex'
|colspan=2|{{BS76199}}
|
|style='text-align:center'|06:11||style='text-align:center'|01:07||style='text-align:center'|06:13||style='text-align:center'|01:10||style='text-align:center'|06:12||style='text-align:center'|01:04
|- class='ex'
|colspan=2|{{BS76541}}
|
|style='text-align:center'|06:14||style='text-align:center'|01:09||style='text-align:center'|06:16||style='text-align:center'|01:13||style='text-align:center'|06:14||style='text-align:center'|01:06
|- class='ex'
|colspan=2|{{BS75271}}
|
|style='text-align:center'|06:15||style='text-align:center'|01:10||style='text-align:center'|06:17||style='text-align:center'|01:14||style='text-align:center'|06:15||style='text-align:center'|01:07
|- class='ex'
|colspan=2|{{BS75281}}
|
|style='text-align:center'|06:17||style='text-align:center'|01:11||style='text-align:center'|06:19||style='text-align:center'|01:15||style='text-align:center'|06:17||style='text-align:center'|01:08
|- class='ex'
|colspan=2|{{BS75291}}
|
|style='text-align:center'|06:18||style='text-align:center'|01:13||style='text-align:center'|06:20||style='text-align:center'|01:16||style='text-align:center'|06:18||style='text-align:center'|01:09
|- class='ex'
|colspan=2|{{BS75311}}
|
|style='text-align:center'|06:20||style='text-align:center'|01:15||style='text-align:center'|06:22||style='text-align:center'|01:17||style='text-align:center'|06:20||style='text-align:center'|01:10
|- class='ex'
|colspan=2|{{BS75361}}
|
|style='text-align:center'|06:21||style='text-align:center'|01:16||style='text-align:center'|06:23||style='text-align:center'|01:18||style='text-align:center'|06:21||style='text-align:center'|01:11
|- class='ex'
|colspan=2|{{BS75351}}
|
|style='text-align:center'|06:21||style='text-align:center'|01:17||style='text-align:center'|06:24||style='text-align:center'|01:19||style='text-align:center'|06:22||style='text-align:center'|01:12
|- class='ex'
|colspan=2|{{BS65191|int=(Berth 1B)}}
|
|style='text-align:center'|06:26||style='text-align:center'|01:22||style='text-align:center'|06:30||style='text-align:center'|01:24||style='text-align:center'|06:27||style='text-align:center'|01:18
|- class='ex'
|colspan=2|{{BS65069}}
|
|style='text-align:center'|06:28||style='text-align:center'|01:24||style='text-align:center'|06:32||style='text-align:center'|01:26||style='text-align:center'|06:29||style='text-align:center'|01:19
|-
|colspan=2|{{BS67251}}
|{{SE1| }}
|style='text-align:center'|06:30||style='text-align:center'|01:25||style='text-align:center'|06:33||style='text-align:center'|01:27||style='text-align:center'|06:30||style='text-align:center'|01:20
|- class='ex'
|colspan=2|{{BS67241}}
|
|style='text-align:center'|06:31||style='text-align:center'|01:26||style='text-align:center'|06:34||style='text-align:center'|01:28||style='text-align:center'|06:32||style='text-align:center'|01:22
|- class='ex'
|colspan=2|{{BS67181}}
|
|style='text-align:center'|06:32||style='text-align:center'|01:27||style='text-align:center'|06:35||style='text-align:center'|01:29||style='text-align:center'|06:33||style='text-align:center'|01:22
|- class='ex'
|colspan=2|{{BS67191}}
|
|style='text-align:center'|06:34||style='text-align:center'|01:28||style='text-align:center'|06:36||style='text-align:center'|01:30||style='text-align:center'|06:34||style='text-align:center'|01:23
|- class='ex'
|colspan=2|{{BS67201}}
|
|style='text-align:center'|06:35||style='text-align:center'|01:29||style='text-align:center'|06:37||style='text-align:center'|01:31||style='text-align:center'|06:35||style='text-align:center'|01:24
|- class='ex'
|colspan=2|{{BS67269}}
|
|style='text-align:center'|06:36||style='text-align:center'|01:30||style='text-align:center'|06:38||style='text-align:center'|01:32||style='text-align:center'|06:36||style='text-align:center'|01:25
|-
|colspan=2|{{BS67601}}
|{{NE15| }}
|style='text-align:center'|06:38||style='text-align:center'|01:31||style='text-align:center'|06:40||style='text-align:center'|01:33||style='text-align:center'|06:38||style='text-align:center'|01:27
|- class='ex'
|colspan=2|{{BS64571}}
|
|style='text-align:center'|06:41||style='text-align:center'|01:33||style='text-align:center'|06:42||style='text-align:center'|01:35||style='text-align:center'|06:40||style='text-align:center'|01:29
|- class='ex'
|colspan=2|{{BS64371}}
|
|style='text-align:center'|06:44||style='text-align:center'|01:35||style='text-align:center'|06:47||style='text-align:center'|01:37||style='text-align:center'|06:45||style='text-align:center'|01:32
|-
|colspan=2|{{BS64381}}
|{{NE14| }}
|style='text-align:center'|06:46||style='text-align:center'|01:37||style='text-align:center'|06:48||style='text-align:center'|01:38||style='text-align:center'|06:46||style='text-align:center'|01:33
|- class='ex'
|colspan=2|{{BS64391}}
|
|style='text-align:center'|06:48||style='text-align:center'|01:38||style='text-align:center'|06:50||style='text-align:center'|01:40||style='text-align:center'|06:47||style='text-align:center'|01:35
|-
|colspan=2|{{BS64009|int=(Alighting)}}
|{{NE14| }}
|style='text-align:center'|06:50||style='text-align:center'|01:40||style='text-align:center'|06:51||style='text-align:center'|01:41||style='text-align:center'|06:48||style='text-align:center'|01:37
|}
</div>

==Historical Information==
{| class="wikitable" style='text-align:center'
!style={{CSS/BUS|xfc=|xbc=}}|Operator
!style={{CSS/BUS|xfc=|xbc=}}|Route
!style={{CSS/BUS|xfc=|xbc=}}|Year
!style={{CSS/BUS|xfc=|xbc=}}|Date
!style={{CSS/BUS|xfc=|xbc=}}|Service changes
|-
|rowspan=31|{{SBST}}<br>'''(Current)'''<br>''Known as {{SBS}} prior to 1 November 2001''
|rowspan=3|Tampines ↺ Changi Airport
|rowspan=2|'''1988'''
|'''24 January'''
|style='text-align:left'|Introduced between Tampines Int and Changi Airport PTB (Loop).
|-
|'''23 October'''
|style='text-align:left'|Skips a pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
|-
|'''1990'''
|'''13 October'''
|style='text-align:left'|Amended to serve Changi Airport PTB 2.
|-
|rowspan=3|Pasir Ris ↺ Changi Airport
|'''1992'''
|'''29 November'''
|style='text-align:left'|Extended to Pasir Ris Int under TransitLink Network Integration Exercise Phase 10.
|-
|'''1993'''
|'''24 January'''
|style='text-align:left'|Amended to serve Tampines Int in both directions.
|-
|'''1994'''
|'''16 January'''
|style='text-align:left'|Amended to ply Pasir Ris St 52 and Pasir Ris Dr 1, skipping Pasir Ris Ctrl.
|-
|Tampines ↺ Changi Airport
|'''1995'''
|'''10 September'''
|style='text-align:left'|Shortened to Tampines Int with the introduction of Service 15.
|-
|rowspan=3|Tampines ↔ Changi Airport
|rowspan=2|'''1996'''
|{{TBC}}
|style='text-align:left'|Converted to bi-directional service between Tampines Int and Changi Airport PTB 1.
|-
|{{TBC}}
|style='text-align:left'|First bus from Tampines Int brought forward to 0545 hrs on Sundays and Public Holidays.
|-
|'''1997'''
|{{TBC}}
|style='text-align:left'|Serves additional pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
|-
|rowspan=7|Sengkang ↔ Changi Airport
|rowspan=2|'''1999'''
|'''25 July'''
|style='text-align:left'|Extended to Sengkang Ter.
|-
|{{TBC}}
|style='text-align:left'|Serves reinstated bus stop outside Blk 298A along Punggol Rd.
|-
|rowspan=3|'''2000'''
|{{TBC}}
|style='text-align:left'|Serves new pair of bus stops outside and opposite SATS Flight Kitchen along Airport Blvd.
|-
|{{TBC}}
|style='text-align:left'|Serves 2 new pairs of bus stops outside and opposite Tampines Dormitory and before and after Tampines Ind Ave 5 along Tampines Ave 10.
|-
|{{TBC}}
|style='text-align:left'|Serves reinstated bus stop outside Blk 190C along Punggol Rd.
|-
|'''2001'''
|'''28 April'''
|style='text-align:left'|Amended to Sengkang Temp Int.
|-
|rowspan=3|'''2002'''
|{{TBC}}
|style='text-align:left'|Serves new pair of bus stops before and after Tampines Ave 9 along Tampines Ave 10.
|-
|Hougang Ctrl ↔ Changi Airport
|'''29 December'''
|style='text-align:left'|Extended to Hougang Ctrl Int.
|-
|rowspan=2|{{Bus/D|27|note=Hougang Ctrl ↔ Changi Airport}}{{Bus/D|27A|note=Compassvale Rd → Tampines Ave 5}}
|'''30 December'''
|style='text-align:left'|{{Bus/D|27A|note=Introduced from Compassvale Rd (Opp Blk 240) to Tampines Ave 5 (Blk 147) during morning peak hours on weekdays.}}
|-
|'''2003'''
|{{TBC}}
|style='text-align:left'|Serves new pair of bus stops before and after TPE along Tampines Ave 10.
|-
|rowspan=2|{{Bus/D|27|note=Hougang Ctrl ↔ Changi Airport}}{{Bus/D|27A|note=Compassvale Rd → Tampines Ave 5}}{{Bus/D|27B|PAST|note=Tampines Ave 5 → Compassvale Rd}}
|rowspan=2|'''2007'''
|'''26 March'''
|style='text-align:left'|{{Bus/D|27B|PAST|note=Introduced from Tampines Ave 5 (Blk 938) to Compassvale Rd (Blk 240) during evening peak hours on weekdays.}}
|-
|'''11 November'''
|style='text-align:left'|Amended to serve Changi Airport PTB 3.
|-
|{{Bus/D|27|note=Hougang Ctrl ↔ Changi Airport}}{{Bus/D|27A|note=Compassvale Rd → Tampines Ave 5}}
|'''2008'''
|{{TBC}}
|style='text-align:left'|{{Bus/D|27B|PAST|note=Discontinued.}}
|-
|rowspan=2|{{Bus/D|27|note=Hougang Ctrl ↔ Changi Airport}}{{Bus/D|27A|note=Sengkang East Ave → Tampines Ave 4}}
|rowspan=2|'''2009'''
|'''17 August'''
|style='text-align:left'|{{Bus/D|27A|note=Extended to start from Sengkang East Ave (Blk 203B) and shortened to terminate at Tampines Ave 4 (Opp Century Sq).}}
|-
|'''26 October'''
|style='text-align:left'|{{DWAB}}
|-
|rowspan=6|{{Bus/D|27|note=Hougang Ctrl ↺ Changi Airport}}{{Bus/D|27A|note=Sengkang East Ave → Tampines Ave 4}}
|'''2012'''
|'''9 January'''
|style='text-align:left'|{{Bus/D|27|note=Converted to loop service between Hougang Ctrl Int and Changi Airport PTB 2.}}
|-
|'''2014'''
|'''24 August'''
|style='text-align:left'|Serves new pair of bus stops before and after Punggol Rd along TPE.
|-
|'''2015'''
|'''8 November'''
|style='text-align:left'|Serves new pair of bus stops outside and opposite CityLife @ Tampines along Tampines Ave 9.
|-
|'''2017'''
|'''11 September'''
|style='text-align:left'|{{Bus/D|27|note=Last bus extended to 2350 hrs daily.}}
|-
|'''2022'''
|'''28 August'''
|style='text-align:left'|Temporarily amended to ply Hougang Ave 4 and Hougang Ave 10 with the partial closure of Hougang Ctrl to facilitate the construction of {{CR8| }} on the {{CRL}}.
|-
|'''2024'''
|'''27 May'''
|style='text-align:left'|{{Bus/D|27|note=First bus brought forward to 0510 hrs on weekdays.}}
|}

{{Sengkang – Hougang Bus Package}}