Updated Date:
Author: Salar de Uyuni Editorial Team
Quick Summary: The standard way to travel from Uyuni to San Pedro de Atacama is a 3-day 4×4 tour that crosses the salt flats, the coloured lagoons and the southwest desert before dropping you at the Hito Cajón border post at roughly 4,480 m, where a transfer takes you the final 45 km into Chile. Most travelers do the shared version; private and 4-day options exist for more comfort and time. The crossing is straightforward if your paperwork is in order, but the altitude, cold and basic accommodation are the real challenges, not the border.
Crossing from Bolivia into Chile through the southwest desert is one of the great overland journeys in South America, and one of the few where the transport *is* the trip. There is no bus from Uyuni to San Pedro de Atacama in any normal sense. You cross on a tour, sleeping in remote villages and refuges, and you arrive in Chile at a border post above 4,400 m.
This guide covers the formats available, which direction to travel, what happens at the border, and how to pick an operator. For the route overview, see our San Pedro de Atacama to Uyuni page.
What this route actually is
A multi-day tour from Uyuni to Chile is a 4×4 expedition covering roughly 600 km of mostly unpaved track through the Sur Lípez region of Potosí department, finishing at the Hito Cajón crossing beside Laguna Blanca. Groups are typically six passengers plus a driver in a Toyota Land Cruiser, with a cook either travelling with the group or waiting at accommodation.
Three things define it:
- Altitude. You spend two days between 3,600 m and 5,000 m, sleeping above 4,200 m on night two.
- Remoteness. No ATMs, no reliable phone signal, no medical facilities, no fuel stations for long stretches.
- Cold. Night temperatures in the refuges commonly reach −10°C and can fall to −20°C in June and July.
None of that makes it a hard trip, but it does mean the cheapest available seat is not automatically the right choice.
The standard 3-day itinerary
Nearly every operator runs a version of this. Timings shift, the order rarely does.
Day 1 — Uyuni to the salar rim Departure around 10:00–11:00. Train Cemetery outside Uyuni, then Colchani for salt processing and handicrafts, then out onto the flat for perspective photos. Lunch on the salt, Isla Incahuasi with its giant cacti in the afternoon, sunset on the flat, then overnight in a salt-built hostel in a village such as Chuvica or Atulcha.
Day 2 — Desert and lagoons The long day, often six to eight hours in the vehicle. Rock formations at Valle de Rocas, the abandoned settlements our ghost towns page covers, a string of high lagoons including Laguna Hedionda and Laguna Cañapa, then the Siloli Desert and Árbol de Piedra. Late afternoon at Laguna Colorada at about 4,278 m, then overnight nearby at around 4,200–4,300 m.
Day 3 — Geysers, hot springs, border Very early start, usually 04:30–05:00. Sol de Mañana geyser field at roughly 4,850 m at dawn, when steam is thickest against the cold air. Breakfast and a soak at Polques Hot Springs. Then the Dalí Desert, Laguna Verde and Laguna Blanca beneath Licancabur volcano, and the border at Hito Cajón between roughly 08:00 and 10:00.
Passengers continuing to Chile transfer to a shuttle; passengers on a round trip turn back toward Uyuni, arriving in the evening.
Tour formats compared
| Format | Duration | Ends at | Roughly who it suits |
|---|---|---|---|
| Shared 3-day, one-way to Chile | 3 days | Hito Cajón / San Pedro | The default. Best for budget travelers and anyone continuing south |
| Shared 3-day, round trip | 3 days | Back in Uyuni | Travelers returning to La Paz or continuing to Potosí and Sucre |
| 4-day extended | 4 days | Hito Cajón or Uyuni | Travelers who want less time in the vehicle each day and a sunrise on the salt |
| Private 3-day | 3 days | Either | Photographers, families, couples, anyone wanting flexibility on timings and stops |
| 2-day express | 2 days | Usually back to Uyuni | Time-pressed travelers; cuts the southwest circuit heavily and is rarely worth it |
| Luxury / semi-private | 3–4 days | Either | Travelers wanting private rooms, better refuges and smaller groups |
The 4-day version is the underrated option. The single biggest complaint about the standard 3-day tour is the length of day two and the 04:30 start on day three. A fourth day spreads the same route out and often adds sunrise on the salt flat.
Which direction should you travel?
This matters more than most people realise.
| Uyuni → San Pedro de Atacama | San Pedro de Atacama → Uyuni | |
|---|---|---|
| Altitude profile | Ascending, then a sharp drop to 2,400 m at the end | Sharp ascent on day one from 2,400 m to over 4,000 m |
| Acclimatisation | Better — you have already been on the altiplano | Harder — altitude sickness risk is highest on day one |
| Salt flats seen | Day one, at the start | Day three, as the finale |
| Laguna Verde timing | Early morning, often before the wind turns it green | Late morning, better chance of full colour |
| Sunset on the salt | Yes, day one | Sometimes, depending on operator timing |
| Ends in | San Pedro de Atacama at 2,400 m — a gentle landing | Uyuni at 3,670 m, with onward transport to arrange |
| Best for | Travelers coming from La Paz or Peru heading south | Travelers coming up from Chile or Argentina |
If you are already in Bolivia and acclimatised, travelling Uyuni to Chile is easier on your body and finishes with a long descent to San Pedro, which most people find a relief. If you are coming from Chile, budget at least two nights in San Pedro first, and consider a day trip to somewhere around 4,300 m before committing to the tour.
The Hito Cajón border crossing
The crossing itself is simple, but it is remote and there is no help available if something is wrong with your paperwork.
How it works:
- Your tour reaches the Bolivian post at Hito Cajón, at roughly 4,480 m, usually mid-morning on day three.
- You get your Bolivian exit stamp. Check the stamp is actually in your passport before walking away. Missing exit or entry stamps are the most common problem on this crossing.
- You transfer to a shuttle bus for the final 45 km into Chile, descending steeply to San Pedro de Atacama at about 2,400 m.
- Chilean immigration and customs are processed in San Pedro, not at the pass.
- Arrival in San Pedro is typically between 10:30 and 12:00.
What to know:
- Chilean agricultural controls are strict. Fresh fruit, vegetables, meat, dairy, seeds, honey and coca leaves are prohibited. Declare anything you are unsure about rather than risk a fine — the penalties are real and the searches are thorough.
- Carry your passport accessibly, not buried in a bag on the roof rack.
- The transfer usually costs extra and is paid in cash, in bolivianos or Chilean pesos. Confirm with your operator whether it is included.
- There is no ATM at the border. Sort your cash in Uyuni.
- Crossing in the other direction, into Bolivia, you must have completed SIGEMIG, Bolivia’s free online entry pre-registration, before you arrive. It applies to every foreign visitor regardless of nationality and produces a QR code you show at the border. US, UK, EU, Canadian and Australian citizens have been able to enter Bolivia visa-free since December 2025, but visa-free does not mean paperwork-free — SIGEMIG is separate and still mandatory. Register through Bolivia’s Dirección General de Migración before travelling.
The border can close temporarily in heavy snow, most often in July and August. Operators reroute passengers back to Uyuni when this happens, so do not book a same-day onward flight from Calama.
Choosing an operator
Uyuni has dozens of agencies and quality varies enormously. The headline price tells you very little. Ask these before paying:
- Does the agency own its vehicles, or subcontract? Subcontracting is common and means the agency you paid has no control over your driver.
- How old is the 4×4 and when was it last serviced? Breakdowns on day two are the single most common trip-ruiner.
- Does the driver speak English, or is there a separate guide? Many drivers speak Spanish and Quechua only. This is fine if you are comfortable in Spanish and a significant limitation if you are not.
- How many passengers per vehicle? Six plus driver is standard. Seven is cramped for three days.
- What is included and what is not? The Eduardo Avaroa reserve entrance fee, Isla Incahuasi entry, Polques Hot Springs and the Chile transfer are frequently excluded.
- Are sleeping bags provided or hired separately? Night two is well below freezing.
- Are dietary requirements possible? Vegetarian and vegan meals need to be arranged at booking, not on the day.
- What happens if the border closes or a vehicle breaks down? A clear answer is a good sign.
- Is there oxygen in the vehicle? Reputable operators carry a cylinder.
Read recent independent reviews rather than the ones displayed in the agency window. Prices cluster tightly, and an agency significantly below the local rate is usually cutting the vehicle, the food or the accommodation.
Costs, and what is usually extra
Shared 3-day tours from Uyuni are priced within a fairly narrow band, with private tours several times higher. Budget separately in cash for:
- Eduardo Avaroa National Reserve entrance fee, collected at the gate in bolivianos
- Isla Incahuasi entry on day one
- Polques Hot Springs entry
- Toilet fees at most stops
- Drinks, snacks and any hot shower charges at the refuges
- Sleeping bag hire if not included
- The transfer from Hito Cajón to San Pedro de Atacama
- Tips for the driver and cook
Carry small boliviano notes. There are no ATMs and no card payment anywhere between Uyuni and the border, and change is genuinely scarce.
One 2026-specific note: Bolivia’s national diesel shortage has raised operating costs across the country and thinned transport availability. Tour prices have been more volatile than usual and dollar quotes are unreliable since the boliviano began floating on 26 June 2026. Confirm figures in bolivianos in the week before you travel, and check the current official rate with the Banco Central de Bolivia if you are budgeting in advance.
Getting to Uyuni to start the tour
Most travelers reach Uyuni from La Paz, and 2026 has made that leg less predictable. Our La Paz to Uyuni guide covers the options in detail, and how to get to Salar de Uyuni compares every arrival route including Cusco to Uyuni from Peru.
If you are coming down through Peru and crossing into Bolivia first, the transport comparison matters:
| Option | Best for | Trade-offs |
|---|---|---|
| Bolivia Hop and Peru Hop | First-time visitors, non-Spanish speakers, travelers building a wider Peru–Bolivia route | Hotel pickups, bilingual staff and assistance at the border remove most of the confusing steps; costs more than the cheapest local ticket |
| Public long-distance buses | Confident Spanish speakers, locals, travelers who want to go direct | Cheapest headline fare, but add taxis to and from terminals, waiting time, luggage handling and schedule changes and the gap narrows; terminals are busy and signage is in Spanish only |
| Domestic flights to Uyuni | Travelers short on time or avoiding overnight cold | Fastest and most reliable, considerably more expensive, limited departures |
Two 2026 realities apply to every road option in Bolivia. Regulated bus fares rose by around 40% in January, and the national diesel shortage has cut the number of interdepartmental buses actually running, with reports through mid-year of only a fraction of the fleet in service. Whichever option you choose, book earlier than you normally would and build a spare day into your itinerary before a non-refundable tour departure.
Who each option suits
- Best for first-time visitors: shared 3-day tour from Uyuni to Chile, with a well-reviewed operator.
- Best for budget travelers: the same, booked in person in Uyuni rather than online.
- Best for comfort: private or semi-private 3- or 4-day tour with upgraded accommodation.
- Best for photographers: 4-day tour, travelling Uyuni to Chile, with a private vehicle if the budget allows.
- Best for travelers coming from San Pedro de Atacama: the reverse 3-day, but only after two nights acclimatising in San Pedro.
- Best for confident Spanish speakers: any local agency in Uyuni, where you will get better information and more flexibility.
- Best for travelers who want everything organised: book the tour and your Bolivia arrival transport together, and leave a buffer day in Uyuni.
If you are heading into Chile, our guide to the Atacama Desert covers what waits on the other side.
FAQ
Is there a direct bus from Uyuni to San Pedro de Atacama?
There are some direct bus services between Uyuni and Calama in Chile, taking around nine hours, with onward connections to San Pedro de Atacama. However, the overwhelming majority of travelers cross on a 3-day 4×4 tour instead, because the tour route passes the coloured lagoons, geysers and desert landscapes that are the main reason to travel this corridor at all. A direct bus gets you to Chile and nothing else. If you have already seen the southwest circuit or are short on time, the bus is a legitimate choice; otherwise the tour is the better value even though it costs more.
How long does the border crossing at Hito Cajón take?
Usually 30 to 60 minutes on the Bolivian side, depending on how many tour vehicles arrive at once. Bolivian exit formalities happen at the pass at roughly 4,480 m, then you transfer to a shuttle for the 45 km descent to San Pedro de Atacama, where Chilean immigration and customs are processed. The Chilean side can take longer because agricultural inspections are thorough. Total time from the Bolivian post to being free in San Pedro is commonly two to three hours, with arrival typically late morning.
Can I do the tour one way and not return to Uyuni?
Yes, and it is the most popular way to do it. Operators sell the 3-day tour as a one-way trip ending at the Chilean border, with a transfer into San Pedro de Atacama arranged either as part of the price or as a small extra paid in cash. You will need to confirm this when booking, because the same tour is also sold as a round trip returning to Uyuni on the evening of day three. If you are carrying luggage you do not want on the roof rack for three days, ask about storage and be realistic about dust.
What happens if I get altitude sickness during the tour?
Tell your driver immediately rather than waiting. Reputable operators carry oxygen and know the route well enough to descend or reroute if needed, and coca tea is available at every stop. The highest risk is night two, spent above 4,200 m near Laguna Colorada, and the highest point on the route is the Sol de Mañana geyser field at roughly 4,850 m. The best prevention is acclimatising before you start — at least two nights above 3,500 m in La Paz, Potosí or Uyuni — plus drinking plenty of water, eating lightly and avoiding alcohol during the tour.
What do I need to enter Bolivia if I cross from Chile?
Every foreign visitor must complete SIGEMIG, Bolivia’s free online entry pre-registration, before arriving, and it applies at land borders exactly as it does at airports. It takes under ten minutes, costs nothing, and produces a QR code you present at the post. Separately, citizens of the US, UK, EU countries, Canada and Australia have been able to enter visa-free for tourism since December 2025, while other nationalities may need a visa in advance. Your passport should have at least six months’ validity, and you should confirm your entry stamp is in the passport before leaving the border post.
Limitations
Itineraries, stop order and timings vary between operators and are routinely adjusted for weather, water levels and road conditions. The Hito Cajón border can close temporarily in snow, particularly in July and August, so avoid booking same-day onward flights from Calama. Reserve entrance fees, hot springs charges and the border transfer are cash only in bolivianos and change periodically. Tour operator standards, group sizes, vehicle condition and accommodation quality differ widely and we have not audited individual agencies — read recent independent reviews and confirm inclusions before paying. Bolivian entry requirements and visa categories change; verify your own nationality’s status with official sources before travelling. Transport to Uyuni is unusually unstable in 2026 because of the national diesel shortage and January’s regulated fare increase, and the boliviano has been floating since 26 June 2026, so treat all dollar figures as approximate and confirm prices in bolivianos close to your departure date.
