Killing Fields and Prison S21 Bus Tour
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September 2026
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Adults
Age 13 and over
Children
Age 12 and under
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Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.1/5
Based on 208 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Killing Fields and Prison S21 Bus Tour worth booking?
Killing Fields and Prison S21 Bus Tour is a 5-hour experience in Phnom Penh, Cambodia, from $15 per person. It scores 68 out of 100 on the Outty Ranking, which we label “Solid Choice”, based on a 4.1/5 rating across 208 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 68 / 100
- Rating
- 4.1/5 (208)
- Duration
- 5 hours
- From
- $15 per person
Hop aboard a comfortable, air-conditioned tour bus and embark on a journey through Cambodia's haunting past. Begin your exploration at the Security Prison S21, established during the Khmer Rouge regime from 1975 to 1979.
What you get
About this experience
Hop aboard a comfortable, air-conditioned tour bus and embark on a journey through Cambodia's haunting past. Begin your exploration at the Security Prison S21, established during the Khmer Rouge regime from 1975 to 1979. Discover the chilling transformation of a former school into a notorious interrogation and torture facility, where thousands endured unimaginable horrors. Next, venture to the Killing Fields, situated 11 kilometers south of Phnom Penh. Here, witness the somber landscapes where mass executions and burials unfolded. Enrich your understanding of Cambodia's recent history with a documentary screening onboard, offering invaluable insights into the nation's turbulent past.
What's included
Included
- Documentary film played on-board on the way to Killing Fields
- Free WiFi on board (please ask tour assistant when you need it)
- 1 x bottle of drinking water
- Half day transportation on an air-conditioned tour bus
- English speaking tour assistant on hand to help
Not included
- Entry fees (Prison S21 $5, ; Killing Fields $3)
- Audio guides (Prison S21 $5; Killing Fields $3, optional)
- In-House live guide services (Prison S21 $3-$5, Optional)
What you'll see and do
Tuol Sleng Genocide Museum
Visit the notorious prison under Khmer Rouge regime. A school was turned into a security prison by Khmer Rouge in the middle of Phnom Penh city.
75 minutes here · Admission not included
Choeung Ek Genocidal Center
You will visit the execution site and mass grave where victims of Prison S21 run by Khmer Rouge. Now the site is a memorial centre of the victims killed by Khmer Rouge regime.
75 minutes here · Admission not included
Where it starts and ends
Hotel pickup
Pickup is included for all travelers. Pickup begins about 30 minutes before departure.
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 15 travelers per booking
- Operated by
- Phnom Penh Hop on Hop off Bus Tours
Know before you go
- Infants are required to sit on an adult’s lap
- Not recommended for travelers with spinal injuries
- Not recommended for travelers with poor cardiovascular health
- Travelers should have at least a moderate level of physical fitness
- Please provide your WhatsApp number when you make the booking as we will contact you via WhatsApp for pick up time, or you can ask your hotel reception to call our local number 015745880 to confirm pick up time and location the night before the tour, or you can send us an email 1 day in advance to confirm hotel pick up time and location. Please provide hotel name & address (as some hotels have similar names), and room number for pick up.
- The Killing Fields tour is a shared bus tour, please be on time for pickup. If your hotel is located near Riverside, Central Market (not including Russian BLVD), Wat Phnom, Royal Palace, Independence monument, Aeon Mall, Kirirom, BKK, we will offer free hotel pick up. But some hotels are not in our pick up zone due to traffic problem. Guests who stay in those hotels are advised to come to Night Market at Riverside (bus station) for pick up at 8am or 1:30pm, or to arrange your own transportation such as tuktuk ($2-$5 depending on your hotel location) to go to a meeting point for pick up. If you stay at a residential address within our pick up zone, you will be advised to go to a hotel suggested by our office for pick up. Please check the location of your hotel before you book this tour.
- Pick up times: Morning tour pick up starts from 8am. If your hotel is near riverfront, pick up time will be between 8am - 8:15am. If your hotel is a bit far away from riverside, pick up time will be between 8:15am - 9:00am. Afternoon tour pick up starts from 1:30pm, if your hotel is near riverfront, pick up time will be between 1:30pm - 1:45pm, if your hotel is a bit far away from riverside, pick up time will be between 1:45pm - 2:30pm. Please come down to the reception area at lease 10 minutes in advance for pick up and inform the reception that you are waiting for pick up, because our tour assistant will go to ask the reception first. Please do not stay in your room or in the hotel restaurant. Pick up might be delayed due to traffic condition and special events. The duration of transfers is approximate.
- Experience Phnom Penh’s profound history with a distinctive approach that caters to a diverse audience. Unlike conventional tours that rely on English-speaking guides, our tour offers a unique advantage: the freedom to explore the Genocide Museum and Killing Fields at your own pace, using multi-language audio guides. This ensures that every participant, regardless of their native language, receives an insightful and personalized experience for a minimal fee—often less than the cost of a cup of coffee. Our join tour accommodates a vibrant mix of cultures, allowing you to engage deeply with the historical sites while enjoying the flexibility and inclusivity of our self-guided approach. Discover the stories and significance of these pivotal landmarks in a way that’s tailored to you, enhancing both accessibility and understanding for all.
- There are three options for visiting Prison S21: 1.Audio Guide ($5): Rent an audio guide with interviews, detailed explanations, and availability in 12 languages (English, Français, Deutsch, Nederlands, Italiano, Español, Pусский, 中文, แบบไทย, 한국인, 日本語, Tiếng, Việt ). It provides comprehensive insights into the exhibits and the history of the Khmer Rouge regime. 2.Live Guide ($3-$5): Hire an in-house live guide for a more interactive experience. A live guide offers detailed knowledge, answers questions, and shares personal stories to enhance your visit. Live guide service is only in English. 3.Self-Guided: Explore the museum on your own with plenty of written information, including placards and signage. This option allows you to move at your own pace and focus on areas of interest. Regarding the audio guide at the prison, there are two versions available: the Highlight version and the Long version. The Highlight version, marked in red on the guide map, lasts approximately 60 minutes. We recommend this version for those participating in our tour. The Long version, which lasts about 120 minutes, is more suitable for private tours. If you wish to delve deeper into the history of the Khmer Rouge and spend more time at the museum, a private tour is recommended. When renting the audio guide, please begin your tour promptly and maintain a steady pace between stops. Avoid spending excessive time at any one stop to ensure you complete the tour within the allocated time. Return to the bus at the time specified by the bus attendant. You will have approximately 80 minutes to visit the museum, which most visitors find sufficient. If you feel you need more time, we suggest opting for a private tour instead.
- There are two options for visiting the Killing Fields: 1.Audio Guide ($3): Rent an audio guide with interviews, detailed explanations, and availability in 14 languages (English, Français, Deutsch, Nederlands, Italiano, Español, Pусский, Svenska, 中文, แบบไทย, 한국인, 日本語, Melayu, Tiếng, Việt ). 2.Self-Guided: Explore the Killing Fields on your own with maps and informational signs to help guide you through the various areas, including the memorial stupa, mass graves, and excavation sites. Audio guides at Prison S21 and Killing Fields are optional.
- Our visit time assigned at the Prison is about 1 hour and 15 minutes. So you are suggested to take the highlight tour if you purchase the audio guide. Highlight Audio Tour is about 50 minutes. Please follow the numbers printed in RED on the guide map. Extensive audio guide is about 2 hours long and is not suitable for half day tour.
- Entry fees not included, please prepare small money notes for entrance fees and audio tours.
- Please choose the option that best suits your preferences and budget for a richer experience. Please note that our bus tour is distinct from a tuktuk tour. Our tour is designed with Western tourists in mind, focusing on comfort, safety, and a richer experience compared to a tuk-tuk, with an English-speaking bus attendant who provides general assistance. Our service includes air-conditioned transportation, audio commentary and documentaries on board, as well as Wi-Fi and drinking water. We understand that our tour may be more expensive than a tuk-tuk ride, but we aim to provide a more comfortable, comprehensive, informative, and safe experience.
Photos
What travelers are saying
Outty’s summary of the themes that recur across 208 traveler reviews. Written by us, not quoted from reviewers.
The guide
5 mentionsTravelers single out the guide as the reason the experience works.
Knowledge and storytelling
4 mentionsReviewers describe the commentary as informative rather than scripted.
Good for families
3 mentionsReviewers traveling with kids report it landed well with their group.
Pace and timing
2 mentionsSeveral reviewers found the schedule tight or the day long.
Traveler reviews
208 verified traveler reviews for Killing Fields and Prison S21 Bus Tour. Ratings and reviews provided by Viator and Tripadvisor.
Awsome the museum was...
Awsome the museum was amazing and the killing fields were even better because we got to see where it really took place. We liked how the bus took us to the places and gave us plenty of time at each place
via Viator
Good way to see S21 and Killing Fields
Convenient way to see S21 and Killing Fields. Can easily be done more cheaply by Tuktuk but I thought it was worth paying extra for the support and the interesting video.
via Tripadvisor
Good way to see these places.
Myself and my partner did this tour - it was OK - nothing to complain about - You don't have unlimited time at the places but it takes you to 2 places - Prison 21 and Killing Fields - and you have a decent amount at time at both. a really good video was played also on the bus which was really informative.
via Tripadvisor
Hassle free way of getting to S21 and Killing Fields
We booked this tour through Klook the night before. Communication was prompt, and all information needed regarding pick up and making sure that we understood it was transport only between the sites was relayed to us. The bus has air conditioning, and the guide handed out water. When we got to the sites, the guide helped us pay for our entrance fees and made sure to tell us the time to be back by. The time allowed was 1.5 hours per site, which we found to be more than enough to soak in all the horrific history. We found this bus tour to be great, with friendly, professional service and would highly recommend it as a hassle-free way to get around with hotel pick up and drop off.
via Tripadvisor
The Killing Fields
I paid 5usd Cheap i know. The bus picked me up from my hotel. The drive was around 45 min or so. R.I.P to all the victims, you literally just walk in a big circle looking at maybe 3-4 plot of dirts patches. No need to pay for the audio guide because there are signs displaying what happened and the tour bus plays a video explaining everything but if you insist i believe it was around 3usd. It took me maybe 20 min to walk the area. They give you around a hour but I noticed a lot of people sitting on benches that finished early waiting on their bus as well. Basic snacks on site but there is a food stall and restaurant across the street of all the tours I'd save this for last and prioritize Ankor Wat and a few others first.
via Tripadvisor
Good to know
- Duration
- 5 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Hotel pickup
- Included for all travelers
- Booked in 30 days
- 73
- Verdict
- Solid Choice
Why this scores 68
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Killing Fields and Prison S21 Bus Tour: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Phnom Penh.
How much does Killing Fields and Prison S21 Bus Tour cost?
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Prices start at $15 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Phnom Penh usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Killing Fields and Prison S21 Bus Tour take?
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Plan for about 5 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Phnom Penh is not rushed.
Is Killing Fields and Prison S21 Bus Tour worth it?
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It holds an Outty Ranking of 68 out of 100, which we label "Solid Choice". That score blends traveler sentiment (4.1/5 across 208 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Phnom Penh, and how flexible the cancellation terms are.
Can I cancel or reschedule Killing Fields and Prison S21 Bus Tour?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Killing Fields and Prison S21 Bus Tour suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 5-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Killing Fields and Prison S21 Bus Tour?
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Around 73 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Phnom Penh can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Phnom Penh and add a light layer if any part of the 5-hour experience runs outdoors or after sunset.
Where does Killing Fields and Prison S21 Bus Tour start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Phnom Penh within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Phnom Penh?
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On Outty we rank every Phnom Penh experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Half Day Tuol Sleng S21 and Choeung Ek Killing Field Tour, The Killing Field and Toul Sleng Genocide Museum (S21) Tour, Killing field and Toul Sleng genocide museum Tour. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Phnom Penh?
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Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Phnom Penh?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
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