'Sunday Night Football' Blows Past 'American Idol' as Most Expensive Show for Advertisers (Report)

American Idol is no longer the most expensive show for advertisers.

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NBC's Sunday Night Football has far surpassed Fox's singing competition in terms of ad rates, according to a survey in Advertising Age.

The two shows were effectively tied in last year's report -- with less than $10,000 separating them -- but for the 2012-13 season, SNF reportedly commands about $205,000 more per 30-second spot on average.

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SNF's average cost to advertisers for the current season is $545,142, up from $512,367, Ad Age reported. Meanwhile, the Wednesday edition of Idol -- the performance episode -- fell from $502,900 last season to $340,825. Thursday's results show fell from $468,100 last season to $296,002, coming in at No. 5 on the Ad Age rankings.

While SNF has continued its ratings dominance -- last week, the broadcast pulled in a 6.9 rating with adults 18-49 and 17.7 million viewers -- Idol has seen its ratings drop off as the show ages and the judges panel undergoes shakeups.

This year saw the depatures of judges Steven Tyler and Jennifer Lopez, who had been with the show for two seasons, with Mariah Carey, Nicki Minaj and Keith Urban taking their places alongside veteran Randy Jackson.

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Meanwhile, two comedies -- ABC's Emmy-winning Modern Family ($330,908) and Fox's New Girl, now only in its second season ($320,940) -- come in at No. 3 and 4 spots, respectively, while the rest of the top 10 also is filled out by comedies.

Here are the 10 most expensive TV shows in terms of ad rates, as ranked by Ad Age:

1. Sunday Night Football -- $545,142
2. American Idol (Wednesday) -- $340,825
3. Modern Family -- $330,908
4. New Girl -- $320,940
5. American Idol (Thursday) -- $296,062
6. The Simpsons -- $286,131
7. Family Guy -- $276,690
8. The Big Bang Theory -- $275,573
9. 2 Broke Girls -- $269,235
10. Two and a Half Men -- $247,261