Home History
| Republic of Ireland Leinster Senior League | 2018/05/16 18:00 | Crumlin United v Killester Donnycarney FC | D | 1-1 |
| Republic of Ireland Leinster Senior Cup | 2018/05/13 09:04 | Killester Donnycarney FC v Greystones | D | 0-0 |
| Republic of Ireland Leinster Senior League | 2018/05/09 19:00 | St Patricks CY FC v Killester Donnycarney FC | L | 2-1 |
| Republic of Ireland Leinster Senior League | 2018/05/02 18:00 | Bluebell United v Killester Donnycarney FC | D | 1-1 |
| Republic of Ireland Leinster Senior League | 2018/04/22 09:59 | Killester Donnycarney FC v Leixlip United | W | 3-0 |
| Republic of Ireland Leinster Senior League | 2018/04/18 19:00 | Greystones v Killester Donnycarney FC | L | 4-2 |
| Republic of Ireland Leinster Senior Cup | 2018/04/11 19:00 | Tolka Rovers v Killester Donnycarney FC | W | 1-2 |
| Republic of Ireland Leinster Senior League | 2018/03/22 19:43 | Malahide Utd v Killester Donnycarney FC | L | 1-0 |
Away History
| Republic of Ireland Leinster Senior League | 2018/05/16 18:00 | Portmarnock AFC v Sacred Heart Firhouse Clover | W | 4-3 |
| Republic of Ireland Leinster Senior League | 2018/05/02 18:47 | Bangor Celtic FC v Portmarnock AFC | D | 1-1 |
| Republic of Ireland Leinster Senior League | 2018/04/18 17:45 | Bluebell United v Portmarnock AFC | L | 3-2 |
| Republic of Ireland Leinster Senior League | 2018/04/15 13:43 | Crumlin United v Portmarnock AFC | W | 0-1 |
| Republic of Ireland Leinster Senior League | 2018/03/25 10:02 | Portmarnock AFC v Crumlin United | L | 2-4 |
| Republic of Ireland Leinster Senior League | 2018/02/11 11:00 | Portmarnock AFC v Greystones | W | 1-0 |
| Republic of Ireland Leinster Senior League | 2018/01/28 11:02 | Cherry Orchard v Portmarnock AFC | D | 2-2 |
| Republic of Ireland Leinster Senior League | 2018/01/12 20:00 | Newbridge Town FC v Portmarnock AFC | D | 1-1 |