milk run 
noun
A routine, uneventful journey, especially by plane: I was waiting to catch the milk run to Winnipeg...
- To every one's enormous relief, the first mission turns out to be a milk run - hardly any flak, not a German fighter in the sky.
- It was a milk run, meaning it was an easy mission.
- His first ride was a milk run to pick up supplies in Japan.
- time difference
- time differential
- time dilatation
- time dilation
- time disc
- time disk
- time displacement
- time-distance
- time division
- time division multiplex
- time domain
- time draft
- time-drop
- time element
- Time-ese
- time-expired
- time-exposed
- time exposure
- time-fellow
- time-filler
- time flies
- Timeform
- time frame
- timeful
- timefully