Since Donald Trump began attacking Fox News anchor Megyn Kelly's participation in the network's January 28 GOP presidential primary debate, Fox has given him nearly 40 minutes of free airtime, amounting to about $1 million.

According to a Media Matters analysis, Trump has been hosted by the network four times since he tweeted on January 23 that “Based on @MegynKelly's conflict of interest and bias she should not be allowed to be a moderator of the next debate.” Trump has since said that he would not participate in the debate, citing Kelly's participation and Fox News' response to his criticisms.

Following his tweet, he appeared on Justice on January 23, MediaBuzz on January 24, Special Report with Bret Baier on January 26, and The O'Reilly Factor on January 27, for a total of 39 minutes, 47 seconds of free airtime. According to IQ Media, which uses price data for advertising from Sqad to determine an equivalent advertising rate, those appearances were worth $936,347.76.

While many affiliated with Fox News criticized Trump's decision to boycott the debate, other conservative media figures applauded the move. On Trump's nearly 16-minute appearance with Bill O'Reilly, the Fox News host repeatedly urged the candidate to return to the debate stage. That appearance alone netted Trump more than $500,000 in free airtime.

Prior to his latest feud with Fox News, the network had given Trump nearly $30 million in free airtime from May 1, 2015, through December 31, 2015.

Methodology:

Media Matters used IQ Media to ascertain the viewership and monetary value of Donald Trump's appearances on Fox News Channel from January 23, 2015, (the day Trump floated the idea that he might not participate in the January 28 debate) through January 27, 2015, between 6 a.m. and 11 p.m.. The study includes all original appearances; repeat appearances were counted if they aired on a new day. Previous Media Matters studies have used a different program to calculate television dollar value.