But this is the first announcement Mr. Trump has made about where he will be instead, on his 100th day in the White House.
Trump's decision to skip the correspondents dinner and hold a rally on the same night as the event may put White House reporters in a tough spot, forcing them to choose between attending the black-tie dinner and covering Trump's rally in Pennsylvania.
"Next Saturday night I will be holding a BIG rally in Pennsylvania".
Mr. Trump, whose relationship with the press corps has been combative, boycotted the annual black-tie affair for Washington's media elite and Hollywood stars where the president is traditionally the guest of honor and the main attraction.
And on the biggest stage of all, as he accepted his party's nomination at the Republican National Convention in Cleveland, Ohio, he promised to ask every government department to provide a list of wasteful projects for him to eliminate in his first 100 days.
April 29 is also the date of the annual White House Correspondents' Association dinner in Washington.
The president spent much time campaigning in Pennsylvania, and taking the state proved a key victory in defeating Democratic challenger Hillary Clinton in the Electoral College. "Looking forward to seeing our bravest and greatest Americans!" he tweeted.