Regionals, big jet regional, probably 50-ish, but could easily get higher than that.
Domestic pax narrowbody, maybe 15-30-ish, depending on airline.
Long-haul pax widebody, might be as low as 3-5.
This assumes a typical line guy who probably bids the same way consistently, ie his preferences and seniority will limit him to some subset of the available destinations. If you sole objective was to fly to different places, you could do that.