Quick Summary: There is no direct, comfortable way from La Paz to San Pedro de Atacama, and that is part of the appeal. The four realistic options are a three-day Uyuni salt flat tour ending at the Hito Cajón border, a bus chain via Uyuni and the Ollagüe crossing, a flight to Calama via Santiago or Santa Cruz, or an overland run via Oruro. The salt flat tour is the option most travelers should take, because it turns the journey into the highlight rather than the cost.
The Geography Problem
La Paz sits at 3,650 metres on the northern altiplano. San Pedro de Atacama sits at 2,400 metres in northern Chile, on the far side of a high desert plateau, the Eduardo Avaroa reserve, and an international border at over 4,400 metres. In a straight line it is not far. By road it is a long, high, cold traverse through some of the emptiest terrain in South America.
There is no single bus that does it well, and travelers who look for one usually end up disappointed. What exists instead are four distinct approaches with genuinely different trade-offs.
Route 1: The Three-Day Salt Flat Tour to Hito Cajón
The most popular option, and for most travelers the right one.
You travel from La Paz to Uyuni overnight, then join a three-day, two-night 4×4 tour that crosses the Salar de Uyuni, the coloured lagoons of the Eduardo Avaroa Andean Fauna National Reserve, the Sol de Mañana geysers and the Salvador Dalí desert, before dropping you at the Hito Cajón border post on the morning of day three. From there a shuttle takes you the roughly 45 kilometres down to San Pedro.
- Total time: four days from La Paz including the overnight bus.
- Typical cost: roughly US$150–300 for the tour depending on operator standard and group size, plus the La Paz–Uyuni bus and the Hito Cajón to San Pedro transfer, plus the reserve entry fee.
- Pros: you see Bolivia’s headline landscape and cross the border with the same vehicle. No backtracking.
- Cons: three days in a jeep at very high altitude, basic accommodation, and you are dependent on a single operator for everything including the border handover.
The altitude warning matters here. Hito Cajón sits at around 4,480 metres and San Pedro at 2,400. Coming the other way — Chile to Bolivia — travelers ascend more than 2,000 metres within an hour, which is a serious altitude-sickness risk. Going La Paz to San Pedro you are descending, which is far kinder, and is one of the strongest arguments for doing the route in this direction.
Route 2: Bus via Uyuni and the Ollagüe Crossing
The independent option. Overnight bus La Paz to Uyuni, then a direct international bus from Uyuni to San Pedro de Atacama or Calama, crossing at Ollagüe.
- Total time: roughly 24–30 hours including the Uyuni stop.
- Typical cost: roughly US$40–70 for the Uyuni–San Pedro leg, plus the La Paz–Uyuni fare.
- Departures: typically one service per day, often leaving Uyuni in the very early morning.
- Journey time on the international leg: commonly 11–13 hours including the border.
- Pros: cheapest of the overland options, no tour commitment, seats recline.
- Cons: long, cold, and you see the desert through a window rather than standing in it. Border formalities can take two to three hours.
This is the option that suits fluent Spanish speakers who want to travel directly and are comfortable navigating Bolivian terminals and border posts. It is worth counting the full picture when comparing costs — the taxi to the terminal, the check-in window, and a night in Uyuni all belong in the sum.
Route 3: Flying
There is no direct flight. The realistic routings are La Paz to Calama via Santiago, or La Paz to Calama via Santa Cruz and a Chilean connection. Calama is around 100 kilometres from San Pedro, with frequent shuttle buses taking around 90 minutes to two hours.
- Total time: typically a full day with connections.
- Typical cost: highly variable, commonly US$250–500 return depending on season and booking window.
- Pros: fastest, and avoids the high-altitude overland crossing entirely.
- Cons: expensive, involves backtracking through Santiago, and you skip the entire Bolivian southwest — which is the reason most people take this route in the first place.
Flying makes sense for travelers with fixed dates and limited time, and for anyone advised against high altitude on medical grounds.
Route 4: Overland via Oruro and Tambo Quemado
Less common for this specific pairing, but worth knowing. The Tambo Quemado–Chungará crossing at around 4,680 metres is the paved route from the altiplano to Chile, and it leads to Arica on the coast rather than to San Pedro. From Arica or Iquique you would then travel south, which is a long detour.
This route is relevant mainly to travelers heading for coastal Chile rather than the Atacama, and it is covered in our companion article on Bolivia to Chile by bus.
Comparison Table
| Salt flat tour to Hito Cajón | Bus via Ollagüe | Flight via Calama | Overland via Tambo Quemado | |
|---|---|---|---|---|
| Total time from La Paz | ~4 days | ~24–30 hours | ~1 day with connections | 2+ days with detour |
| Approx. cost | US$200–400 all in | US$60–110 all in | US$250–500 | Variable |
| Scenery | Exceptional | Good from a window | Aerial only | Good, different |
| Altitude profile | High but descending | High but descending | Avoids the plateau | Very high pass |
| Flexibility | Fixed itinerary | Daily departure | Schedule-dependent | Flexible |
| Best for | Most travelers | Independent budget travelers | Time-limited or altitude-sensitive | Those heading to coastal Chile |
Border, Paperwork and 2026 Conditions
SIGEMIG. Bolivia requires all foreign visitors to complete the SIGEMIG online entry registration before arriving, which produces a QR code. This applies to land arrivals as well as flights. If you are leaving Bolivia, make sure your entry was properly recorded — travelers have long reported problems at Andean borders where an entry stamp was not issued, producing a fine on exit. Check your passport at the moment you cross in, and do not walk away from the window until you have seen the stamp.
Exit and entry. Bolivian formalities at Hito Cajón are completed at the top of the pass; Chilean customs are further down towards San Pedro. Chile enforces strict agricultural import rules — no fruit, vegetables, seeds, meat or dairy. Declare anything you are unsure about; penalties for undeclared items are significant.
Cash. Change your remaining bolivianos before the border. There is nothing at Hito Cajón, and Chilean prices are several times Bolivian ones, which is a shock worth budgeting for.
2026 disruption. A 90-day nationwide state of emergency was declared on 20 June 2026 to clear road blockades that had cut supplies across Bolivia, as reported by Al Jazeera. Fuel supply has been tight, and departures from Uyuni have at times been delayed. Check road status with the Administradora Boliviana de Carreteras and the Government of Canada travel advisory before committing.
Sequencing the Whole Trip
It is essential to schedule travel time to destinations that are conveniently located and arranged in a logical sequence. For most travelers that means arriving in La Paz overland from Lake Titicaca — which provides an acclimatisation ramp — spending time in La Paz, then running the southern loop through Uyuni and out to Chile. Doing it in reverse, arriving from San Pedro at 2,400 metres and crossing to 4,480 metres in an hour, is the single most common cause of serious altitude sickness on this corridor.
Bolivia Hop runs the northern corridor between La Paz, Copacabana and the Peru border with hotel pickup and drop-off, onboard bilingual hosts and hop-on, hop-off flexibility, and travelers arriving from Cusco or Puno usually join through Peru Hop at the Kasani crossing. The southern legs to Uyuni and onward to Chile are served by domestic and international operators rather than the Bus Hop network.
What Travelers Say
Traveler quote: Not available— see reviewer. A verified, named traveler review specific to the La Paz–San Pedro de Atacama routing could not be confirmed at the time of writing.
FAQ
Can I do the salt flat tour and leave my luggage somewhere?
Yes, and most travelers do. Tour operators in Uyuni store bags for the duration of the tour, and La Paz hotels almost universally store luggage free for returning guests. Since the tour ends at the border rather than back in Uyuni, you will need to take everything with you on a Hito Cajón-ending itinerary — which is worth planning for, as jeep space is limited to roughly one main bag plus a daypack per person. Confirm the luggage allowance with your operator before booking.
Is the border crossing complicated?
Not complicated, but slow and cold. Hito Cajón is a small post at around 4,480 metres and processing a jeep convoy can take an hour or more in the open. Have your passport, SIGEMIG confirmation and any visa documentation accessible rather than buried in a bag. Chilean entry involves a declaration form and a baggage inspection at the control point further down. The whole sequence typically adds two to three hours to the day.
Which direction is better, Bolivia to Chile or Chile to Bolivia?
Bolivia to Chile, for altitude reasons. Travelling south you begin acclimatised from La Paz and Uyuni and descend into San Pedro. Travelling north you leave San Pedro at 2,400 metres and are at 4,480 metres within an hour, then spend three days above 4,000 metres — a profile that produces a lot of unwell travelers. If you must go north, spend at least two nights in San Pedro first and consider discussing altitude medication with a doctor before travelling.
How cold does it get on the tour?
Very. The second night of a three-day tour is typically spent at over 4,000 metres, where temperatures regularly fall to around minus 10°C and can reach minus 20°C in the winter months of June to August. Accommodation is basic and usually unheated, though blankets are provided in quantity. Bring a proper insulated jacket, thermal base layers, hat, gloves and a warm sleeping bag or hire one in Uyuni. This is the single most common thing travelers underestimate.
Do I need a visa for Chile?
Most European, North American, Australian and New Zealand passport holders enter Chile visa-free for tourism, and nationals of many other countries do too, but requirements change and some nationalities need to apply in advance. Check with the Chilean consulate for your nationality before travelling. Everyone entering Chile receives a tourist card at the border which must be retained and presented on exit, and Chile’s agricultural declaration is enforced seriously.
Limitations
Fares, departure frequencies and tour prices on this corridor change frequently and are affected by Bolivia’s 2026 fuel situation and inflation, so treat the figures here as indicative and confirm current prices and schedules locally or with your operator before booking; this article also does not name individual bus companies on a route the Bolivia Hop network does not serve, which limits direct comparison — the workaround is to check recent dated reviews for whichever service your accommodation or agency recommends. Border processing times vary widely and cannot be predicted, so build buffer into any onward connection from San Pedro or Calama. Road and security conditions in Bolivia have been unusually changeable during 2026, making ABC bulletins and official travel advisories the appropriate live sources.