| Episode | Channel | Broadcast | Viewers | Share | Pos | |
| Gridlock | |  |  | Sun 24 Apr 2016 2:00am EDT | | | | |
| Gridlock | |  | | Sat 14 May 2016 11:00pm CDT | | | | |
| Gridlock | |  | | Thu 19 May 2016 9:00pm EDT | | | | |
| Gridlock | | | | Fri 20 May 2016 12:00am EDT | | | | |
| Gridlock | | | | Fri 20 May 2016 3:00am EDT | | | | |
| Gridlock | | | | Fri 20 May 2016 6:00pm EDT | | | | |
| Gridlock | | | | Sun 22 May 2016 12:00pm EDT | | | | |
| Gridlock | |  | | Thu 11 Aug 2016 10:00am EDT | | | | |
| Gridlock | | | | Thu 1 Sep 2016 9:00pm EDT | | | | |
| Gridlock | | | | Fri 2 Sep 2016 12:00am EDT | | | | |
| Gridlock | | | | Mon 28 Nov 2016 10:00am EST | | | | |
| Gridlock | | | | Wed 21 Dec 2016 1:30am EST | | | | |
| Gridlock | | | | Wed 11 Jan 2017 10:00am EST | | | | |
| Gridlock | | | | Wed 15 Feb 2017 11:00am EST | | | | |
| Gridlock | | | | Thu 16 Feb 2017 5:00am EST | | | | |
| Gridlock | | | | Wed 22 Mar 2017 7:00am EDT | | | | |
| Gridlock | | | | Mon 10 Apr 2017 7:00am EDT | | | | |
| Gridlock | | | | Wed 19 Apr 2017 11:00am EDT | | | | |
| Gridlock | | | | Thu 20 Apr 2017 5:00am EDT | | | | |
| Gridlock | | | | Wed 24 May 2017 11:00am EDT | | | | |
| Gridlock | | | | Fri 23 Jun 2017 10:00am EDT | | | | |
| Gridlock | | | | Fri 21 Jul 2017 9:00am EDT | | | | |
| Gridlock | | | | Mon 21 Aug 2017 6:00am EDT | | | | |
| Gridlock | | | | Tue 19 Sep 2017 10:00am EDT | | | | |
| Gridlock | | | | Mon 6 Nov 2017 11:00am EST | | | | |
| Gridlock | | | | Wed 20 Dec 2017 4:45pm EST | | | | |
| Gridlock | | | | Wed 10 Jan 2018 7:00am EST | | | | |
| Gridlock | | | | Sun 30 Sep 2018 1:00pm EDT | | | | |
| Gridlock | | | | Mon 24 Dec 2018 6:00am EST | | | | |
| Gridlock | | | | Fri 28 Dec 2018 1:20am EST | | | | |
| Gridlock | | | | Fri 10 Jan 2020 2:40pm EST | | | | |
| #DoctorWhoLockdown: Gridlock | |  |  | Sat 30 May 2020 8:00pm BST | | | | |
| Gridlock | | | | Tue 29 Dec 2020 2:40pm EST | | | | |
| Gridlock | | | | Mon 27 Dec 2021 2:40pm EST | | | | |
