Flying to Cusco and Machu Picchu with Altitude Concerns
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Cusco sits at 3,400 m, an hour's flight from Lima. The CDC advises only mild exercise for the first 48 hours at altitude; talk to your doctor before you go about the altitude and whether any medication is right for you.
Scope: For travellers flying into Cusco, Peru, who want to plan around altitude. It isn't medical advice: health points are attributed to the U.S. CDC and the Government of Canada, and your doctor should decide what applies to you. Trekking at higher elevations, such as multi-day treks or Rainbow Mountain, needs more planning than this guide covers.
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Most trips to Machu Picchu start with a flight to Cusco, and the altitude is what catches people out. Flying in means a large climb in about an hour. Here's what official health sources say, and how to shape the first days of the trip around it.
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Official rules: U.S. CDC Yellow Book
Why the flight matters
The CDC's Yellow Book notes that a one-hour flight separates Lima, on the Pacific coast at 161 m (528 ft), from Cusco at 3,400 m (11,152 ft), where most travellers start their journey through southern Peru. Flying straight in removes the gradual ascent that helps the body adjust.
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Official rules: U.S. CDC Yellow Book
What the CDC advises about acclimatizing
The CDC's high-altitude chapter recommends ascending gradually: avoid going directly from low altitude (under 1,200 m / 4,000 ft) to a sleeping altitude above 2,750 m (9,000 ft) in one day. A flight to Cusco does exactly that, so the chapter's other advice matters more.
It advises only mild exercise for the first 48 hours at altitude, and describes acetazolamide as a medication a clinician may prescribe to speed acclimatization or to treat early acute mountain sickness, with the recommendation depending on a traveller's risk, including their history of altitude illness and how high they'll sleep on the first night.
Whether any medication is right for you is a decision for your doctor. Book a pre-travel appointment early enough to discuss it.
General advice: applies wherever you fly
Plan the first days around the altitude
Avoid scheduling your most strenuous day right after landing. Look up the elevation of each place you'll sleep, and take that list to your doctor when you discuss the plan.
Build slack into the itinerary so a rough first night doesn't cost you your Machu Picchu visit.
One plan to keep out of the first days: Rainbow Mountain (Vinicunca). Day trips from Cusco climb to a viewpoint at about 5,036 m, far above the city's 3,400 m, so the outing belongs after you have acclimatised, and it is worth raising with your doctor alongside the rest of the itinerary if you intend to go.
Official rules: Peru (Ministry of Culture)
Machu Picchu tickets and trails
Peru's Ministry of Culture sells entrance tickets to Machu Picchu online through the Peruvian State Platform for the Management of Visits to Cultural Centers; the official Machu Picchu site links to it. Check the current entry rules there before you plan the day.
The Government of Canada's travel advice for Peru warns that trails in the Andes may be steep, slippery and poorly marked, that some hikers have become lost on trails around Machu Picchu, and that access to Vinicunca ("Rainbow Mountain") is regularly disrupted by disputes between communities along its routes. It advises knowing the symptoms of high-altitude illness.
General advice: applies wherever you fly
Before you book, sort out
A short list to work through well before departure.
Checklist
- A pre-travel appointment to discuss altitude, your health conditions and any medication.
- An itinerary with a lighter first day or two after flying in.
- Official Machu Picchu tickets for a date that leaves room for delays.
- Travel insurance that covers the activities you plan.
- The current travel advisory for Peru, including any regional warnings.
Official sources
Rules and amounts change. Before you rely on anything marked as an official rule, check the source. These are the official pages we used.
- Peru (Yellow Book) · U.S. Centers for Disease Control and Prevention (CDC)
- High-Altitude Travel and Altitude Illness (Yellow Book) · U.S. Centers for Disease Control and Prevention (CDC)
- Travel advice and advisories: Peru · Government of Canada
- Online tickets · Machu Picchu official site (Ministry of Culture, Peru)
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