Related Clues:

• What astronauts do
• Rise rapidly
• Opposite of plummet
• Birds do it
• Travel in a hot air balloon
• Go out of sight, as gas prices
• Fly into the wild blue yonder
• Use a hang glider
• Rise suddenly
• Ride the air currents
• Climb swiftly
• Fly heavenward
• Glide along
• Float in the air
• Hit the stratosphere