"I got New York to Puerto Rico, round trip, for $77," said an elated passenger.
Delta Air Lines is giving some air travelers a post-Christmas treat.
Yesterday, people booking Delta flights could get them at ultra-low prices, some down to 20 bucks for a round trip.
Jason Herbert tells NBC's "Today" show he got a round trip deal from New York to Vegas.
"I was in complete shock. I was like oh my God. I was like, wow, for me to get in for 81 bucks? Merry Christmas to me," Herbert said.
The airline says it will honor the "mistake fares."