"The wedding has been called off. This is an incredibly sensitive subject and both parties would appreciate privacy and respect over the issue," said Kinzinger spokeswoman Brook Hougesen.
Kinzinger, 34, got engaged to fellow pilot, Air Force Capt. Riki Meyers, in December 2011. The two met in in pilot training, became good friends and then started dating, he told The Hill last year, when he was named to The Hill's "The 50 Most Beautiful" list.
The newly reelected congressman will be returning to Washington in January. He won a tough primary contest earlier this year against fellow Republican Rep. Dan Manzullo.
— This story was updated at 1:21 p.m.