The best replacement for stopover is layover.

The best alternatives to stopover are rated as following:
★★★★★  layover
★★  openjaw
★★  transit
★★  stop over
★  connection
★  direct flight
  stopover

Your alternative for stopover is not listed? Suggest!
Speaking about stopover, one probably shouldn't forget about singapore airlines.

Other search terms related to stopover and their ratings are:
★★★★★ singapore airlines
You have in mind a companion for stopover and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of stopover in all years. Click on graph for more.
stopover
layover
openjaw