Review: Giant Ibis buses, Phnom Penh to Siem Reap (and vice versa)

If you’re skeptical about getting from Phnom Penh to Siem Reap by bus, allow me to assure you that it’s an excellent way to travel in Cambodia! The road from Phnom Penh to Siem Reap is sealed now, which means a smooth rode with views of the Cambodian countryside, and the trip takes between 5 and 6 hours. Giant Ibis, with its onboard powerpoints and WiFi, offers  the best full-size bus experiences in 2022. In this post, I’ll cover Giant Ibis day buses and night buses between Phnom Penh and Siem Reap, both of which I have taken many times.

Giant Ibis bus Cambodia 2019

We took this gleaming Giant Ibis bus in 2019 and it’s still a great ride.

Giant Ibis table of contents

Giant Ibis Phnom Penh – Siem Reap buses

Due to the drop in tourism because of the Covid-19 pandemic, Giant Ibis is only running one day bus and one night bus between Phnom Penh and Siem Reap as of August, 2022, but it is likely they will return to their five-a-day schedule later in the year.

Phnom Penh to Siem Reap 8:45 a.m. 10 p.m.
Siem Reap to Phnom Penh 8:45 a.m. 10 p.m.

→ Buy a ticket on Giant Ibis now

Giant Ibis Transport

Giant Ibis Transport began operations in 2012 and offers a variety of services that will appeal particularly to visitors. Their fleet of buses is new, the seats recline, they offer free WiFi, power outlets, a bottle of water and a pastry and their staff speak English. They are also the only full-size bus company in Cambodia to offer seat belts. Best of all, they offer online booking and seat reservation, thus eliminating the 30-odd minutes one would usually have to spend at a Cambodian travel agent’s while they call the bus company and laboriously write out a ticket.

This isn’t the only thing that sets Giant Ibis apart from the other bus companies in Cambodia. One of my favorite things about the journey is that it does not involve multiple pickups and dropoffs along the way as many of the mini-bus companies do.

The best thing about Giant Ibis, though, is safety. They have a maximum speed of 95 kph/60 mph, and management is alerted automatically if drivers go over this speed. The company has ten full-time mechanics and their dedication to safety seems very genuine. They are also more reliable than the local airlines that ply this route, who often cancel flights if they deem them not profitable enough, leaving people stranded and with little recourse other than to wait an extra day.

Giant Ibis daytime buses from Phnom Penh to Siem Reap

The trip from Phnom Penh to Siem Reap takes about 6 hours give or take about thirty minutes. It’s a nice way to see a bit of the countryside; along the way you’ll see traditional Khmer homes, family gardens, rice paddies, flocks of ducks, and water buffalo being led home. The 38-foot buses seat 41 passengers and while there are no toilets on board, the bus stops at the 1.5 and 3.5 hour mark. The first stop isn’t always the same, but always has a relatively clean Western toilet. Usually, the bus stops at Batheay Rest Area on National Road 6, where you can also buy snacks and cold drinks.

Banyan Tree Giant Ibis restaurant

Don’t worry, you will stop for lunch.

The lunch stop is a restaurant on National Road 4 contracted by Giant Ibis called The Stop in Kampong Speu. While on one hand, it does feel like a bit of a hustle to be forced to sit at a bus company-contracted restaurant, there’s no way of avoiding this. Every bus company in Cambodia stops at places that pay them for the business, and it will even happen when you take a private taxi.

The prices are a little bit higher than you’d expect in Cambodia, but still not very expensive (dishes are priced between $3 and $8). They serve Western and Khmer food, such as hamburgers, pizza, and fried rice, and they are efficient enough to make sure everyone has ordered and eaten in less than 30 minutes. And while Giant Ibis doesn’t own the place, they do hygiene inspections to make sure that everything is up to their standards. Moreover, the toilets are clean and usually have toilet paper. So overall, I can’t really complain.

On board the Giant Ibis day bus

On board, Giant Ibis offer movies in English, which are generally family-friendly action movies–anything that was once a comic book seems to be fair game. Seats have individual switches for the speakers, so the noise is not too loud for those who aren’t interested in watching the movie, and as time progresses they have been lowering the volume, and sometimes skipping them entirely, perhaps recognizing that no one watches the movie anyway.

WiFi is offered onboard, using 3G and 4G. This means that the connection is available when there’s a 3G/4G signal available, which is more than half the journey. It doesn’t work in the more rural parts of the trip, but there’s no avoiding that; this isn’t the fault of Giant Ibis, there is just no mobile service there. The latest exciting addition are individual power outlets on all of the buses between Phnom Penh and Siem Reap. They’re international-style plugs that feature inputs for most standard plugs from around the world.

inside a Giant Ibis bus

Interior of a Giant Ibis on the Siem Reap to Phnom Penh route. Still looking good!

Of course everything on Giant Ibis is not perfect–the seats are narrow enough that it’s unpleasant to sit next to a large stranger, but they have more legroom than any of the mini-buses, and the ride is smoother and more comfortable than on a mini-bus.

Giant Ibis day bus schedule from Phnom Penh to Siem Reap (and vice-versa)

Currently, buses run from Phnom Penh to Siem Reap at 8:45 a.m., 9:45 a.m. and 12:30 p.m., the schedule is the same in the opposite direction, with buses from Siem Reap to Phnom Penh at 8:45 a.m., 9:45 a.m. and 12:30 p.m. as well. They also have a night bus service in both directions at 11:00 p.m. and and 11:30 p.m

Tickets on the Giant Ibis Phnom Penh to Siem Reap route cost $15, and prices are the same for locals and foreigners. You can buy tickets online and choose your seats in advance.

Giant Ibis night buses from Phnom Penh to Siem Reap

Over the years, I’ve taken more Giant Ibis night bus journeys than I care to admit. When I first moved to Cambodia, I vowed I would never take a night bus in Cambodia.  Since then, I’ve made an exception for Giant Ibis because of their safety record and precautions. I’m now a regular on the Giant Ibis night bus from Siem Reap to Phnom Penh.

Giant Ibis night bus Cambodia

The Giant Ibis night bus looks great in the morning, too.

Night buses in Cambodia are notoriously unsafe. Giant Ibis, on the other hand, makes safety a priority. Their  buses go slowly, with a maximum speed of 60km (37 miles) per hour. They enforce this by transmitting the speed via GPS to the Giant Ibis office so that management knows if a driver breaks the rules and go faster. Going slowly is not only safer, but allows for a better night’s sleep, because even at at these speeds the bus usually arrives in six or seven hours. Another safety precaution Giant Ibis takes is to always have two drivers on each bus, and they switch half-way through the journey. If one driver feels fatigued he can switch out and take a nap.

On board the Giant Ibis night bus

In addition to offering a safe ride, each seat is equipped with a power socket that accept standard American, Euro, and UK plugs, and most of them usually work. The bus has WiFi (password: giantibis) that is provided by 4G. This means the connection works as long as there’s 4G coverage, which is for true for about 60% of the journey. Be aware that they do turn out the lights soon after the journey begins, so if you do want to read you will need to bring your own lighting.

The buses are air-conditioned and have a toilet on board. Overly cautious types such as myself bring a sweater for the former and tissues for the latter. Passengers are all given a bottle of water, and each bed comes with a pillow and blanket. When you board the bus you’ll be given a bag to keep your shoes in, so as not to get the beds dirty.

Giant Ibis night bus

The 11 p.m. Giant Ibis night bus has lie-flat beds.

There are two Giant Ibis night buses going each way between between Phnom Penh and Siem Reap, with slightly different seat configurations.  The 11 p.m. Giant Ibis night buses have 32 beds, with 15 on the bottom bunk and 17 on the top. The beds do not fully lie flat, but offer a 45 degree angle that’s pretty decent, and some taller people seem to find the angled seat more comfortable than the lie-flat ones. Seat 6-F is right next to the toilet, and as such, is probably the least optimal seat on the bus. Each bed has a cubby at the bottom to keep your shoes (and feet) in.

Giant Ibis night bus

The 11 p.m. Giant Ibis night bus seating chart.

The 11:30 p.m. bus has 30 lie-flat seats, with 14 on the bottom and 16 on the top. The only downside of this is because there are two fewer seats, there isn’t always a bed for the driver who may end up sleeping next to you in the aisle. On these buses, there are eight single beds and 11 seats of double beds.

Giant Ibis Night Bus

The seating plan for the  11:30 p.m. Giant Ibis night bus.

The buses do not have two levels, rather, the seats are designed like bunk beds with one on the top and one on the bottom. All of the Giant Ibis night buses are arranged with one row of two beds next to each other, and a row of single bunks with an aisle in the middle. If you are traveling alone, try to get one of the single beds. I have traveled alone on the Giant Ibis night bus many times and have never felt unsafe as a solo woman, but again, be sure to get a solo bed (if you buy a ticket online, you can make an advance seat reservation).

Giant Ibis night bus interior

Off to dreamland on the Giant Ibis night bus beds. This is the interior of the 11 p.m. bus.

The night bus buses are not new, but they are fully refurbished. As on all buses, the toilets are not the nicest in the world (if you are a larger person you’ll have a hard time squeezing in) but at least these ones are usually clean. The road between Phnom Penh and Siem Reap is still bumpy — although better than a year ago — and if you aren’t a sound sleeper, it can be a challenge to get a good night’s sleep. Luckily, that challenge is usually alleviated for me by bringing an eye mask, ear plugs, and a sleeping pill.

I travel between Phnom Penh and Siem Reap regularly, and the trip can be excruciatingly long. Because I save so much time by sleeping through the journey, I’ve become a regular on the Giant Ibis night bus. Despite being pretty highly strung about road safety in Cambodia, overall, I think the Giant Ibis night bus is a safe way to get across the country (here are the other options for this route).

Giant Ibis night bus schedule from Phnom Penh to Siem Reap (and vice-versa)

Phnom Penh to Siem Reap 10 p.m.
Siem Reap to Phnom Penh 10 p.m.

→ Buy a ticket on Giant Ibis now

Frequently asked questions about Giant Ibis

Where does Giant Ibis stop in Phnom Penh?

In Phnom Penh, Giant Ibis has a ticketing office on Street 106, but the buses leave and depart from the Giant Ibis bus station on Street 90 behind the National Library. Here’s a map.

Where does Giant Ibis stop in Siem Reap?

Giant Ibis has an office in Siem Reap, but the buses leave and depart from the main bus station which is a little bit outside of Siem Reap. Here’s a map.

This is the address: Address: Borey Seang Nam 1, Sangkat Chreav, Siem Reap

How long does it take to get from Phnom Penh to Siem Reap on Giant Ibis?

Giant Ibis takes between five and six hours to get from Phnom Penh to Siem Reap during the daytime, depending on traffic. The buses at night drive slower, so can take about an hour longer.

How long does it take to get from Siem Reap to Phnom Penh on Giant Ibis?

Giant Ibis takes between five and six hours to get from Siem Reap to Phnom Penh during the day, dependent on how bad traffic is. Because the night buses go slower, they can take about an hour longer.

Which are the best seats on Giant Ibis buses?

Whether you are traveling during the day or at night, the closer to the front is better, in my personal opinion.

How can I get from the Phnom Penh Airport to the Giant Ibis bus terminal?

Download the Passapp or Grab app on your phone and hail a tuk tuk from just outside the gates of the airport. You can also negotiate with a tuk tuk driver inside, but it is usually cheaper to use an app.

Buying tickets on Giant Ibis

Tickets on the Giant Ibis Phnom Penh to Siem Reap route cost $15, and prices are the same for locals and foreigners. You can buy tickets online and choose your seats in advance.

Some links in this post generate affiliate sales for us. This does not affect our reviews for specific bus companies or routes! For more about how we deal with advertising, affiliate sales, and stuff like that, you can read more here.

90 Responses to Review: Giant Ibis buses, Phnom Penh to Siem Reap (and vice versa)

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    […] with 37 pleather seats (plus one for the attendant). One of the more common complaints about the Giant Ibis Phnom Penh to Siem Reap buses is that there’s not a huge amount of legroom. Well, they clearly got the message because the […]

    Marie Pierre Allagnat says:

    Where to take the bus from in siem Reap and where does is the terminal in Phnom Penh?

    ramesh vohra says:

    Is there any GIANT BUS daily-weekly- monthly pass ?

    marco says:

    Hi there
    can i ask if is there any alternative to Giant Ibis night bus from Siem Reap to Sihanoukville (via or not Phnom Penn?
    i’m reading many complaining about this transfert
    i am worried that the night bus will not arrive in time to get the earliest bus leaving for Sihanoukville
    i would like to take directly a boat transfert to the island when we will arrive there without stop in Sihanoukville
    thank you for the suggestion

      Lina says:

      Despite any complaints, the Giant Ibis is still the best night bus in Cambodia. Personally, I do not trust any of the other companies. The bus from Siem Reap arrives very early, with more than enough time to connect to the bus to Sihanoukville. You can also fly from Siem Reap to Sihanoukville.

    bradroack says:

    this is awesome traveling bus

    Terry Tran says:

    [Sales: GiantIbis Nightbus Ticket Siem Reap – Phnom Penh]

    I would like to re-sell a ticket from Siem Reap to Phnom Penh, depart at 11:00 PM – Dec 30, 2015 – with lower price: $12 (original price from GiantIbis is $15 + $1 credit card processing fee). Please contact me via email, I will send you details about the booking and we can discuss further. Thanks!
    Reason: I booked 3 tickets, yet unfortunately, one of my friend cancelled her trip at the last minute. And GiantIbis does not refund if I cancel the ticket.
    Sorry if my comment bothers you guys. Sorry Lina for my spam. You can remove it after Dec 30, thank you so much!

      Lina says:

      I’ll let it slide because it’s Christmas. No more, though, please!

      Terry Tran says:

      “Tickets are non-refundable but exchangeable for 1 time only up to one year from the date of purchase.”
      –> So it’s not limited to the date I posted above, I can exchange it to any departure time that suitable for you.

    luke shan says:


      Peter Bepbob says:

      Speeding, well if they just had a GPS system and a way to Identify the Driver they might be able to ensure no more speeding ?

    Matt says:

    Lina — what is the Giant bus stop “address” in Siem Reap, I am looking at the google map and cannot figure it out; like — point to street intersections or commercial establishments and say North / South of that location – much appreciate

      Lina says:

      Hi Matt, if you search on Google Maps you can find them that way, or if you look at the maps I’ve linked to have a look for the blue icon that says Giant Ibis.

    pushkar sinha says:

    we are in cambodia 23rd to 30th of this month. As of now we have locked Giant for our travel from siemreap to sihanoukville but with such adverse comments and experiences of some peoplwould just like to know the real Giant and what exactly can we expect from them in all respects especially safety and courtesy.

    Alma says:

    Is it better to book online or just go directly to the bus company office and book the tickets for the ride?


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