“This little dude has been such a trooper all day! Our flight to LA to promote #unforgettablethemovie has been delayed 5 1/2 hours and the kids still smiling…which has kept me smiling! #stayingpatient #stayingpositive,” the Doubt actress, 38, captioned the image.
Last week, the Knocked Up actress shared a selfie with all three of her children, including daughters Naleigh, 8, and Adalaide, 5.
The 27 Dresses star and husband, musician Josh Kelley, 37, welcomed their son on Dec. 20, 2016.
Heigl’s latest film, Unforgettable, is set to hit theaters on April 21.