Zaccheaus has agreed to a deal with the Commanders, Tom Pelissero of NFL Network reports.
Zaccheaus hauled in his lone target in Sunday's 37-34 overtime win over the Bills for a 29-yard touchdown.
Zaccheaus failed to secure his only target in Monday's 21-17 win over the Chiefs.
Zaccheaus caught one pass for eight yards in Sunday's victory over the Cowboys.
Zacchaeus pulled in one of his two targets for five yards in Sunday's Week 8 win over Washington.
Zaccheaus was targeted twice in Sunday's 20-14 loss to the Jets, finishing with one catch for five yards.
Zaccheaus is expected to serve as the Eagles' No. 3 receiver in Sunday's game against the Jets with Quez Watkins (hamstring) ruled out for the Week 6 contest.
Zaccheaus was on the field for just nine offensive snaps in Sunday's 23-14 win over the Rams and was not targeted a single time.
Zaccheaus caught two passes for 58 yards and a touchdown in Monday's victory over the Buccaneers.
Zaccheaus was not targeted in Thursday's Week 2 win over the Vikings.