Khao Yai is Thailand’s original national park, and it still feels like it earned that title. Established in 1962 and now part of the Dong Phayayen-Khao Yai Forest Complex, a UNESCO World Heritage Site, it covers over 2,000 square kilometers of rainforest, grassland, and cloud forest a few hours northeast of Bangkok. Wild elephants cross the roads, gibbons call from the canopy, and two of the country’s better-known waterfalls sit inside its boundaries.
This guide covers what it costs to get in, when it’s open, which waterfalls and viewpoints are worth building a day around, what wildlife you can realistically expect to see, and the honest logistics: you need your own wheels here, there’s a real elephant-road-safety issue worth taking seriously, and the best sights close for four months a year. Every fact below is sourced; see the Sources section at the end.
Quick facts
| Foreign adult entry fee | ฿400 (US$12) |
| Foreign child entry fee (3-14) | ฿200 (US$6) |
| Vehicle fee | ฿30 (US$0.90) car / ฿20 (US$0.60) motorbike / up to ฿200 ($6) large truck |
| Opening hours | 6am-6pm daily, year-round |
| Nearest town / gate | Pak Chong (Chao Por Khao Yai gate, north side); Noen Hom gate (Prachinburi side, east) |
| Getting there from Bangkok | Bus or train to Pak Chong (~3 hrs), then local bus/taxi to the gate |
| Getting around inside | No public transport; rental car, motorbike, mountain bike, or tour required |
| Best time to visit | November-February (cool, dry) |
| Viewpoint/trail closures | Roughly June 1-September 30 annually (rainy season regeneration) |
Conversions at ฿33 = US$1 (July 2026).
How much does it cost to enter Khao Yai National Park?
Foreign adults pay ฿400 (US$12), and foreign children aged 3-14 pay ฿200 (US$6), according to the official Khao Yai National Park site. Thai nationals pay a much lower local rate (฿40 for adults, ฿20 for children), which is standard across Thailand’s national parks.
On top of the person fee, there’s a separate vehicle charge:
| Vehicle | Fee (THB) | Fee (USD) |
|---|---|---|
| Motorcycle | ฿20 | $0.60 |
| Car (4-wheel) | ฿30 | $0.90 |
| 6-wheel vehicle | ฿100 | $3 |
| 6-10 wheel vehicle | ฿200 | $6 |
Vehicles over 10 wheels, double-deckers, anything taller than 3.5 meters, or towed RVs aren’t permitted. Pay in cash at the gate or through the Department of National Parks’ QueQ e-ticket app. If you’re staying overnight at a park campsite or bungalow, your ticket covers the length of your stay rather than expiring after one day.
What are the opening hours?
The park operates 6am to 6pm, every day of the year, per the official park site. Visitor centers for maps and trail information run roughly 8:30am-4:30pm.
Where are the entrances?
Khao Yai has two fee-charging gates on opposite sides of the park: Chao Por Khao Yai (Pak Chong side, Nakhon Ratchasima), the main entrance most visitors use since Pak Chong has buses, trains, hotels, and rental shops, and Noen Hom (Prachinburi side, eastern approach), less commonly used by day-trippers.
Haew Narok and Haew Suwat: the two must-see waterfalls
Haew Narok is the park’s largest and tallest waterfall, dropping roughly 150 meters in three tiers, according to World of Waterfalls. It sits toward the south of the park and is the more dramatic of the two, with the strongest flow during and just after the rainy season.
Haew Suwat is smaller at about 25 meters, but arguably more famous: it’s the waterfall used as a filming location in the 2000 movie The Beach, starring Leonardo DiCaprio. The water flows over volcanic rock into the Lam Ta Khong stream as a wide curtain, and it’s an easy, short walk from the parking area, making it one of the most-visited single stops in the park. Both falls run fullest from the tail end of the rainy season through early cool season (roughly September-December) and thin out by the hot season (March-May).
What wildlife will I actually see?
Khao Yai’s reputation is built on genuine biodiversity, not hype. The wider Dong Phayayen-Khao Yai Forest Complex hosts more than 800 recorded fauna species, including over 112 mammal species and nearly 400 bird species. Wild elephants are the biggest draw and biggest safety consideration (see below), seen on forest trails and directly on park roads. Gibbons are heard more than seen, their whooping calls carrying across the canopy most mornings, and hornbills, including the great hornbill, are often spotted overhead by their heavy wingbeats. Sambar deer graze in open grassland near dusk, macaques loiter near roads and picnic areas, and civets, porcupines, and owls turn up mostly on the night safari.
None of this is guaranteed. It’s a wild forest, not an enclosure, so sightings depend on season, time of day, and luck. Early morning and the night safari give you the best odds.
The night safari
The park runs a nightly spotlight safari in open-sided trucks, covering about 10km over roughly one hour, with two departure slots (around 7-8pm and 8-9pm), per Thai National Parks. It’s the most reliable way to spot sambar deer, porcupines, civets, and the occasional wild elephant lit up at the roadside. Book through the visitor center or your tour operator in advance; slots are limited.
Wild elephants on the roads: the honest safety note
This detail separates Khao Yai from a tidy nature park. Wild elephants regularly cross both the roads inside the park and nearby rural highways (NM.3052 and NM.1016) that skirt the boundary, particularly in the dry season when food and water inside the forest thin out. Local reporting from 2026 flagged several wildlife-related road incidents most months on these routes, concentrated in the early evening and around dawn, including elephants blocking roads, damaging vehicles, and stranding tourists for hours.
If you encounter an elephant on the road, the park’s official guidance is direct: stop at least 30 meters away and don’t approach for a photo, skip the horn and flash photography since elephants have sensitive hearing and a startled elephant is a dangerous one, and reverse slowly if it approaches, keeping the engine running for a fast exit rather than cutting it to take a photo. Watch the signals: a calm elephant flaps its ears and sways its tail and trunk loosely, while an agitated one holds its ears stiff and its trunk locked and staring. Elephants move in family groups, so a single one on the road often means others are nearby; give the group time to clear before proceeding.
This isn’t meant to scare you off the park. It’s meant to make sure you treat an elephant sighting from a car like what it is: an encounter with a genuinely large wild animal, not a photo op.
Getting there and getting around
From Bangkok to Pak Chong. Buses run from Bangkok’s Mochit (Chatuchak) bus terminal, taking about 3 hours for roughly ฿145 (US$4.40). Trains also run from Bangkok’s rail stations to Pak Chong throughout the day, per Ton Tan Travel. From Pak Chong, a local Pak Chong-Khao Yai bus runs 6am-5pm, roughly every 30 minutes, for about ฿15, terminating at the Chao Por Khao Yai visitor center at the entrance.
Inside the park. This is the part first-timers underestimate: there is no public transport once you’re through the gate, and the waterfalls, viewpoints, and trailheads are spread across many kilometers of forest road, far too far apart to walk between. Your realistic options: rent a car or motorbike in Pak Chong beforehand (motorbikes run around ฿300-500/day), rent a mountain bike at the visitor center (around ฿200/day, workable for shorter distances), or book an organized tour that handles transport between every stop and usually bundles the night safari and a guide. For most visitors without a vehicle already in Thailand, a tour from Bangkok or Pak Chong is the simplest way to see multiple sights in one day.
Viewpoints, trails, and seasonal closures
The Pha Diao Dai viewpoint is the park’s best-known lookout, with panoramic views over the forest and surrounding mountains. Along with several trails, it’s closed annually from June 1 to September 30 to let vegetation regenerate during the rainy season. Rougher trails (often numbered, like trails 5 and 6) can also close temporarily at other times of year after heavy rain makes them unsafe, so confirm current status with a visitor center or your tour operator before you go.
Camping and staying overnight
Khao Yai has one main open campground, Lam Ta Khong, inside the park. Pitch your own tent for around ฿30/night, or rent one from the park: about ฿150 for a small two-person tent, ฿225 for a larger four-person tent, with gear like sleeping bags and mats renting for ฿20-50 each. The park also offers bungalow-style accommodation starting around ฿800 for two people. Book directly with the Department of National Parks by phone, since the online booking portal has had repeated outages through 2026. If you’d rather stay outside the park, Pak Chong has a wide range of resorts and glamping sites aimed at the same weekend crowd.
Best time to visit
- November-February (cool, dry season): the best all-around window. Daytime temperatures average around 22C, dropping to 9-10C at night, with minimal rain. This is also the busiest period, especially weekends.
- March-May (hot season): clear skies and long sunny days, good for birdwatching, but noticeably hotter and some waterfalls run lower.
- June-October (rainy season): heavy rain, muddier trails, and the seasonal closure of Pha Diao Dai and other viewpoints/trails. On the upside, waterfalls run fullest and the forest is at its greenest, and crowds thin out considerably.
The honest downsides
Khao Yai is genuinely worth visiting, but go in with realistic expectations. You need a vehicle: without a car, motorbike, or tour, you’ll be stuck near the entrance gate, since this isn’t a park you casually explore on foot between stops. Wild elephants on roads are a real risk, not a novelty, so treat every sighting from a vehicle with real caution, especially at dawn, dusk, and at night on roads bordering the park. Weekends and holidays get crowded, since this is Thailand’s oldest and most famous park and an easy trip from Bangkok; popular spots like Haew Suwat can feel busy on Saturdays, Sundays, and holidays. Wildlife sightings aren’t guaranteed either: gibbons and hornbills are heard more reliably than every animal is seen, and elephant sightings depend on season and luck. Finally, viewpoints and some trails close for four months a year — check the June-September Pha Diao Dai closure before building a trip around it.
Planning the rest of your trip
Khao Yai pairs naturally with the wine country that grew up around its edge: see outthailand.com’s Khao Yai wineries guide for the vineyards and tasting rooms a short drive from the park gates. For the full range of things to see and do in the area, check outthailand.com’s things to do in Khao Yai guide. If you’re routing this trip from the capital, outthailand.com’s things to do in Bangkok guide covers how to spend the rest of your time before or after.
Once the park is sorted, check outthailand.com’s live events listings for what else is happening in the region that week, whether that’s a market, a live music night, or a festival worth building your trip around.
Sources
- Khao Yai National Park official site: Park Entry Fees: entrance fees, vehicle fees, opening hours, payment locations
- Khao Yai National Park official site: Visitor Safety and Regulations: wild elephant safety guidance, park regulations
- Khao Sod English: Wildlife Crossing Warning Issued for Two Roads Near Khao Yai: elephant/gaur road crossing warnings, timing of incidents
- Hua Hin Localplus: Elephant Sightings Near Khao Yai Prompt Driver Warnings: frequency of wildlife-related road accidents
- World of Waterfalls: Haew Narok Waterfall: Haew Narok height and description
- Thai National Parks: Khao Yai National Park: night safari schedule and route, wildlife species, park overview
- Ton Tan Travel: How to get to Pak Chong by public transport: bus/train routes and fares from Bangkok, Pak Chong-Khao Yai local bus
- UNESCO World Heritage Centre: Dong Phayayen-Khao Yai Forest Complex: UNESCO inscription, forest complex size and composition
- Wikipedia: Khao Yai National Park: park establishment year, size, history
- PB Valley Khao Yai Winery: Khao Yai wine region location and background