For a backpacking trip through Peru, Bolivia, and Chile, the best choice depends on what you value most. For many backpackers, a hybrid approach (mostly buses with one or two strategic flights) offers the best balance of cost, scenery, and time.
Here's how the options compare:
| Factor | Overland Buses | Domestic/Regional Flights |
|---|
| Budget | Usually cheaper overall | More expensive, but sometimes good deals |
| Time | Slow (often overnight) | Much faster |
| Scenery | Excellent—you see mountains, deserts, villages | Limited to aerial views |
| Flexibility | High; easy to change plans | Less flexible if fares increase |
| Comfort | Varies widely by company and route | Generally more predictable |
| Environmental impact | Lower per passenger | Higher |
Why buses are popular
Many of South America's classic backpacking routes are connected by comfortable long-distance buses.
A common itinerary looks like:
- Lima
- Cusco
- Machu Picchu
- Puno
- Lake Titicaca
- La Paz
- Uyuni Salt Flat
- San Pedro de Atacama
- Santiago
This route is well traveled and has frequent bus connections or organized transfers.
When flights make sense
Flights become worthwhile when:
- You're short on time (less than 3 weeks).
- You want to avoid a 20+ hour bus ride.
- You find a low-cost fare that's close to the bus price.
Popular flight segments include:
- Lima → Cusco (instead of a 20+ hour bus)
- Santiago → Lima if you're flying home
- Calama → Santiago after visiting the Atacama Desert
Suggested strategy by trip length
2 weeks
- Fly to Cusco.
- Bus through southern Peru and Bolivia.
- Consider one flight within Chile.
3–4 weeks
- Mostly buses.
- One optional flight (Lima → Cusco or Calama → Santiago).
5+ weeks
- Almost entirely overland.
- You'll experience gradual changes in landscapes—from the Andes to high-altitude lakes to the Atacama Desert.
Things to keep in mind
- The route between Bolivia's salt flats and northern Chile often involves 4×4 tours, not standard buses.
- High-altitude destinations such as Cusco, La Paz, and the Uyuni Salt Flat are easier to acclimatize to if you travel overland rather than flying directly to the highest elevations.
- Overnight buses can save on accommodation costs, but sleep quality varies.
If I were planning a backpacking trip through all three countries, I'd generally choose mostly overland buses with one carefully chosen flight. You get the classic backpacking experience, save money compared with flying everywhere, and avoid spending multiple days on the very longest bus routes.
