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[back to top] American Idol  Episodes (Semifinals only)

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# Date Episode / Theme #Cn #Pf Average Rating Hi Lo σ 0-19 20-39 40-59 60-79 80-100
1 42417 Feb 17, 2016
42417 AI15 - Top 24 Solo (ii)
Open
 12 12
43.1
 
73 24 23.1 0 7 2 3 0
2 43198 Apr 8, 2018
43198 AI16 - Top 24 Solo (i)
Open
 12 12
43.1
 
77 21 22.8 0 7 2 3 0
3 43947 Apr 26, 2020
43947 AI18 - Top 20
Open (online)
 20 20
46.9
 
67 13 23.0 1 6 7 6 0
4 37439 Jul 2, 2002
37439 AI1 - Semi Group 3
Open
 10 10
36.8
 
60 20 18.1 0 5 4 1 0
5 38055 Mar 9, 2004
38055 AI3 - Wild Card
Open
 8 8
44.4
 
72 24 18.5 0 5 0 3 0
6 38405 Feb 22, 2005
38405 AI4 - Top 24 (Girls)
Open
 12 12
46.7
 
87 13 18.8 1 5 2 2 2
7 39133 Feb 20, 2007
39133 AI6 - Top 24 (Guys)
Open
 12 12
39.3
 
79 12 18.3 3 5 1 3 0
8 42424 Feb 24, 2016
42424 AI15 - Wild Card
Favorite Performance
 10 10
42.2
 
79 14 18.2 1 5 1 3 0
9 43556 Apr 1, 2019
43556 AI17 - Top 20 Solo
Open
 20 20
49.6
 
92 16 19.6 2 5 7 4 2
10 38027 Feb 10, 2004
38027 AI3 - Semi Group 1
Open
 8 8
50.9
 
84 25 21.5 0 4 1 2 1
11 38404 Feb 21, 2005
38404 AI4 - Top 24 (Guys)
Open
 12 12
48.0
 
84 19 19.5 1 4 4 2 1
12 38770 Feb 22, 2006
38770 AI5 - Top 24 (Guys)
Open
 12 12
49.2
 
85 7 16.5 1 4 3 2 2
13 39134 Feb 21, 2007
39134 AI6 - Top 24 (Girls)
Open
 12 12
52.3
 
88 13 15.2 2 4 0 3 3
14 39147 Mar 6, 2007
39147 AI6 - Top 16 (Guys)
Open
 8 8
42.4
 
67 21 17.4 0 4 2 2 0
15 39497 Feb 19, 2008
39497 AI7 - Top 24 (Guys)
1960s
 12 12
47.3
 
82 17 17.6 2 4 2 3 1
16 39505 Feb 27, 2008
39505 AI7 - Top 20 (Girls)
1970s
 10 10
40.3
 
83 5 16.6 2 4 2 0 2
17 39869 Feb 25, 2009
39869 AI8 - Semi Group 2
Billboard Hot 100
 12 12
43.6
 
84 4 19.8 2 4 3 2 1
18 40233 Feb 24, 2010
40233 AI9 - Top 24 (Guys)
Billboard charts
 12 12
36.8
 
84 3 19.0 3 4 3 1 1
19 40603 Mar 1, 2011
40603 AI10 - Top 24 (Guys)
Open
 12 12
50.9
 
90 5 16.7 1 4 2 2 3
20 40967 Feb 28, 2012
40967 AI11 - Top 25 (Guys)
Open
 13 13
47.0
 
79 7 20.3 1 4 5 3 0
21 41325 Feb 20, 2013
41325 AI12 - Vegas QF Girls 1
Open
 10 10
46.5
 
78 8 14.9 1 4 2 3 0
22 41326 Feb 21, 2013
41326 AI12 - Vegas QF Guys 2
Open
 10 10
39.8
 
68 12 18.4 1 4 3 2 0
23 42410 Feb 10, 2016
42410 AI15 - Top 24 Solo (i)
Open
 12 12
41.0
 
71 5 18.4 2 4 2 4 0
24 43213 Apr 23, 2018
43213 AI16 - Victory/2nd Chance
Open
 14 14
50.5
 
86 8 20.5 1 4 4 4 1
25 43569 Apr 14, 2019
43569 AI17 - Top 14
Open
 14 14
44.6
 
85 3 17.4 2 4 4 3 1
26 43570 Apr 15, 2019
43570 AI17 - Victory/2nd Chance
Open
 14 14
43.6
 
81 2 17.9 2 4 5 2 1
27 37656 Feb 4, 2003
37656 AI2 - Semi Group 1
Open
 8 8
45.1
 
70 11 19.3 1 3 1 3 0
28 37670 Feb 18, 2003
37670 AI2 - Semi Group 3
Open
 8 8
45.5
 
74 25 22.9 0 3 4 1 0
29 37684 Mar 4, 2003
37684 AI2 - Wild Card
Open
 9 9
46.3
 
90 17 15.7 1 3 2 1 2
30 38777 Mar 1, 2006
38777 AI5 - Top 20 (Guys)
Open
 10 10
49.4
 
92 19 15.6 1 3 3 1 2
31 38784 Mar 8, 2006
38784 AI5 - Top 16 (Guys)
Open
 8 8
49.8
 
80 24 19.9 0 3 2 2 1
32 39504 Feb 26, 2008
39504 AI7 - Top 20 (Guys)
1970s
 10 10
51.4
 
93 19 17.9 1 3 2 2 2
33 39861 Feb 17, 2009
39861 AI8 - Semi Group 1
Billboard Hot 100
 12 12
46.3
 
80 9 15.6 2 3 2 3 2
34 39877 Mar 5, 2009
39877 AI8 - Wild Card
Billboard Hot 100
 8 8
48.3
 
72 24 22.0 0 3 2 3 0
35 40239 Mar 2, 2010
40239 AI9 - Top 20 (Guys)
Billboard charts
 10 10
43.4
 
70 15 20.4 1 3 3 3 0
36 40240 Mar 3, 2010
40240 AI9 - Top 20 (Girls)
Billboard charts
 10 10
53.0
 
90 6 16.4 1 3 2 2 2
37 41332 Feb 27, 2013
41332 AI12 - Vegas QF Girls 3
Open
 10 10
50.5
 
81 26 22.7 0 3 3 3 1
38 41333 Feb 28, 2013
41333 AI12 - Vegas QF Guys 4
Open
 10 10
44.3
 
78 16 20.7 1 3 5 1 0
39 41689 Feb 19, 2014
41689 AI13 - Rush Week (Guys)
Open
 10 10
46.5
 
74 4 19.4 1 3 2 4 0
40 41690 Feb 20, 2014
41690 AI13 - Wild Card
Open
 5 5
40.6
 
82 20 16.8 0 3 1 0 1
41 42060 Feb 25, 2015
42060 AI14 - Top 12 Guys
Open
 12 12
47.0
 
85 10 18.0 2 3 2 4 1
42 43212 Apr 22, 2018
43212 AI16 - Top 14
Open
 14 14
47.1
 
87 10 17.9 3 3 4 2 2
43 37432 Jun 25, 2002
37432 AI1 - Semi Group 2
Open
 10 10
41.0
 
84 15 17.4 3 2 2 2 1
44 37663 Feb 11, 2003
37663 AI2 - Semi Group 2
Open
 8 8
47.8
 
81 8 16.4 2 2 1 1 2
45 38411 Feb 28, 2005
38411 AI4 - Top 20 (Guys)
Open
 10 10
51.1
 
90 16 21.2 1 2 4 2 1
46 38412 Mar 1, 2005
38412 AI4 - Top 20 (Girls)
Open
 10 10
44.5
 
68 10 21.3 1 2 5 2 0
47 38418 Mar 7, 2005
38418 AI4 - Top 16 (Guys)
Open
 8 8
50.4
 
85 16 17.6 1 2 3 1 1
48 38419 Mar 8, 2005
38419 AI4 - Top 16 (Girls)
Open
 8 8
47.5
 
80 7 16.4 1 2 2 2 1
49 38769 Feb 21, 2006
38769 AI5 - Top 24 (Girls)
Open
 12 12
45.8
 
80 10 15.8 3 2 3 3 1
50 38776 Feb 28, 2006
38776 AI5 - Top 20 (Girls)
Open
 10 10
41.6
 
70 7 16.7 2 2 4 2 0
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