Update: United has finally extended the 4/30 deadline to cancel flights that were booked before 3/3 for travel from 6/1-12/31. You now have until 5/31 to make cancellations. You should wait until 5/31 before making any cancellations for travel from 6/1-12/31 to see if United will extend the cancellation deadline, or cancel/significantly change your flight, […]