White House adviser Kellyanne Conway cost taxpayers thousands of dollars last year — taking numerous trips across the country on private planes, rather than commercial flights, according to House Democrats.

The trusted Trump aide flew alongside former health secretary Tom Price, who was forced to step down last fall due to the apparent jet-setting.

While Price has sent checks to the Treasury Department, paying back Uncle Sam for his travels, Conway has yet to offer up a cent.

Rep. Elijah Cummings, the top Democrat on the House Oversight Committee, sent a letter Tuesday to Chairman Trey Gowdy (R-S.C.) — asking him to subpoena travel records for Conway and other White House officials.

Lawmakers on the left claim they’ve been pressing the Trump administration for quite some time about the issue, but they’ve refused to play ball.

“The White House has completely stonewalled our requests for documents,” Cummings wrote in his letter to Gowdy. “If you do not issue a subpoena at this point, it will be obvious to the White House and the American people that the Committee has no intention of serving as a true check on the Executive Branch.”

Price sent the government three checks — totaling about $59,400 — for related travel expenses, according to Cummings.

Conway was said to have accompanied him on several trips, including stops in Maine, Michigan, New Hampshire, Tennessee, West Virginia and Philadelphia.

A White House spokesman downplayed the Democrats’ push for records, calling it “ridiculous” and a “partisan attack.”

“Members of the president’s Cabinet invite relevant White House staff for official travel to events advancing the president’s agenda,” Deputy White House Press Secretary Hogan Gidley said in a statement. “When White House staff accompany Cabinet members their travel plans are arranged, secured and financed by the inviting agency.”

Price resigned back in September after reports emerged, saying he had racked up a $400,000 travel bill. President Trump later scolded him for his use of private charters while speaking to reporters.

“Personally, I’m not happy about it,” Trump said. “I am not happy about it and I let him know it.”

With Post Wires