Is it advisable for one whose asthma is well controlled to travel to places of high altitude?

Sure why not: Keep taking your medications, and bring your rescue inhalor as well. Trigger for asthma includes viral illness, fumes, smoking, allergens (dust, animal dander, ) chemicals, aspirin, cool dry air. It may take you time to acclimatize to high altitude (depending how high you are) . Without any other pulmonary conditon and well controlles asthma i will not be too concerned.

What do YOU mean by: "well controlled"? Asthma in america study reveals that most patients rating their asthma well controlled are not in control by the standards of allergists & pulmonologists. A simple yardstick is the rule of twos. Asthma is in control when albuterol use <3x/week & waking up at night from asthma <3x/month & exacerbation of asthma requiring Prednisone or er visit <2x/year. Pass & you're good to go.