Episodes

[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 39134 Feb 21, 2007
Open
12 12
52.3
 
88 13 15.2 2 4 0 3 3
2 40603 Mar 1, 2011
Open
12 12
50.9
 
90 5 16.7 1 4 2 2 3
3 37663 Feb 11, 2003
Open
8 8
47.8
 
81 8 16.4 2 2 1 1 2
4 37684 Mar 4, 2003
Open
9 9
46.3
 
90 17 15.7 1 3 2 1 2
5 38405 Feb 22, 2005
Open
12 12
46.7
 
87 13 18.8 1 5 2 2 2
6 38770 Feb 22, 2006
Open
12 12
49.2
 
85 7 16.5 1 4 3 2 2
7 38777 Mar 1, 2006
Open
10 10
49.4
 
92 19 15.6 1 3 3 1 2
8 39504 Feb 26, 2008
1970s
10 10
51.4
 
93 19 17.9 1 3 2 2 2
9 39505 Feb 27, 2008
1970s
10 10
40.3
 
83 5 16.6 2 4 2 0 2
10 39511 Mar 4, 2008
1980s
8 8
56.8
 
90 12 15.9 1 1 2 2 2
11 39861 Feb 17, 2009
Billboard Hot 100
12 12
46.3
 
80 9 15.6 2 3 2 3 2
12 40240 Mar 3, 2010
Billboard charts
10 10
53.0
 
90 6 16.4 1 3 2 2 2
13 40604 Mar 2, 2011
Open
12 12
53.2
 
93 9 17.3 2 1 4 3 2
14 40968 Feb 29, 2012
Open
12 12
52.9
 
85 11 14.5 2 2 2 4 2
15 41338 Mar 5, 2013
Open
10 10
54.0
 
86 5 15.3 1 2 3 2 2
16 42061 Feb 26, 2015
Open
12 12
46.5
 
87 9 17.2 2 2 5 1 2
17 43212 Apr 22, 2018
Open
14 14
47.1
 
87 10 17.9 3 3 4 2 2
18 43556 Apr 1, 2019
Open
20 20
49.6
 
92 16 19.6 2 5 7 4 2
19 37425 Jun 18, 2002
Open
10 10
41.4
 
86 9 18.1 3 1 4 1 1
20 37432 Jun 25, 2002
Open
10 10
41.0
 
84 15 17.4 3 2 2 2 1
21 37677 Feb 25, 2003
Open
8 8
40.5
 
81 2 13.1 3 0 3 1 1
22 38027 Feb 10, 2004
Open
8 8
50.9
 
84 25 21.5 0 4 1 2 1
23 38041 Feb 24, 2004
Open
8 8
47.4
 
92 10 17.6 1 1 4 1 1
24 38404 Feb 21, 2005
Open
12 12
48.0
 
84 19 19.5 1 4 4 2 1
25 38411 Feb 28, 2005
Open
10 10
51.1
 
90 16 21.2 1 2 4 2 1
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