Based on the friendly interaction on social media, Buttigieg and Klobuchar seem to be traveling to Dallas ahead of the third Democratic debate on Thursday.
"Very funny, @United," Buttigieg tweeted, with a picture of him sitting behind his 2020 competitor.
And the debate begins... Good sitting by you @PeteButtigieg," Klobuchar responded.
United Airlines responded to the tweet, telling Buttigieg, "We thought you two might want to talk debate strategies before the big night Thursday."
In June, Sen. Elizabeth Warren, D-Mass, was seen sitting directly behind Sen. Bernie Sanders, I-Vt., on a flight to Miami.