I am so sorry for your loss. Here are two different references:
“The minister’s honorarium
Finally, it is customary to give the minister an “honorarium,” for his/her leadership. The amount of such honorariums is usually up to you. In less affluent neighborhoods a $100 honorarium might be appropriate; in more privileged communities a $250 honorarium (or larger) might work. Naturally, you should take into account the time spent by the clergy in working with you in planning and counseling prior to the service.”
Source
” Members Of Tarrytown United Methodist Church:
* No honorarium is expected from members of the congregation because this is part of a pastor’s responsibilities.
*However, if the family chooses to make a special gift to pastor, the amount is to be decided by the family.
*If special travel is required, expenses of the clergy should be covered.
Non-members:
*An honorarium of at least that of the organist ($150) is appropriate.”
Source