They were due to play the Dragons.
Connacht are without a game in the PRO14 for the second week running.
Tomorrow’s trip to the Dragons has been postponed after seven players at the Welsh side tested positive for COVID-19.
Dragons’ game away to Glasgow next week has also been called off.
Meanwhile, France scrum-half Antoine Dupont has been named the Guinness Six Nations player of the tournament.
The 23-year-old won the public vote ahead of five other nominees - including Ireland's C-J Stander.
England's Emily Scarratt is the innaugral women's Six Nations player of the Championship after helping her team to Grand Slam success.