The cheapest and fastest buses from Bangkok to Si Thoi
Cheapest price
$21
Average price
$21
Fastest journey
9 h 45 m
Average duration
9 h 45 m
Buses per day
1
Distance
629 km
The best way to find a cheap bus ticket from Bangkok to Si Thoi is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from Bangkok to Si Thoi will cost around $21 if you buy it on the day, but the cheapest tickets can be found for only $21.
Of the 1 buses that leave Bangkok for Si Thoi on Fri, May 08, 1 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
On Fri, May 08 the direct buses cover the 629 km distance in an average of 9 h 45 m but if you time it right, some buses will get you there in just 9 h 45 m .
On Fri, May 08 the slowest buses will take 9 h 45 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.
12:30 PM9h45Bangkok10:15 PMSi Thoi$211One-way0 transfers
12:30 PM9h45Bangkok10:15 PMSi Thoi$211One-way0 transfers
Travel Information
Compare bus and flight for Bangkok to Si Thoi
Omio recommends booking the bus as it is the most popular option from Bangkok to Si Thoi among Omio's users. If you are prioritising price take the bus with prices starting from $20. For those with little time consider booking a flight which can get you there in 1h 22m. The ticket price range depends on the travel mode: a bus costs an average of $20, and a flight costs an average of $28.
Distance: 390 miles (629 km)
Compare bus with
Most popular Bus | Flight | Driving |
|---|---|---|
$21 Average price Cheapest | $55 Average price | $101 Average price (fuel + tolls) |
10h 15m Average total duration 9h 45m Onboard + 30m Additional time* | 4h 22m Average total duration Fastest 1h 22m Onboard + 3h 0m Additional time* | 9h 48m Average total duration (door-to-door) |
Direct Options | Direct Options | Direct Options |
This is compared to other travel options from Bangkok to Si Thoi:
A bus is $34 (€27) less than a flight for this route with tickets for a flight from Bangkok to Si Thoi costing on average $55 (€44).
Other travel options to Si Thoi take longer:
Bus takes on average 9h 45m.
You'll arrive about 3m sooner (9h 45m by bus vs 9h 48m by car) and save roughly $80 (€64) compared to fuel and tolls ($21 (€17) vs $101 (€80)). You also skip the drive itself — no traffic stress, no parking, and you can use the time to work, nap, or catch up on a series with the onboard Wi-Fi.
Driving is still worth considering if you're travelling with bulky luggage, need flexibility on departure times, or plan to stop along the way.
Bangkok to Si Thoi Bus Timetables
| Operator | Departure Time | Arrival Time | Duration | Departure days | Cheapest price |
|---|---|---|---|---|---|
Operator Budsarakham | Departure Time 05:00PM | Arrival Time 03:45AM | Duration 10h45 | Departure days Thu, Sat | Cheapest price $28 |
Operator Cherdchai Tour | Departure Time 05:30PM | Arrival Time 03:15AM | Duration 9h45 | Departure days Thu, Sat | Cheapest price $23 |
Operator Thaibus Tour | Departure Time 06:00PM | Arrival Time 04:00AM | Duration 10h00 | Departure days Thu, Sat | Cheapest price $23 |
Operator Kasemthara Tour | Departure Time 06:40PM | Arrival Time 05:10AM | Duration 10h30 | Departure days Thu, Sat | Cheapest price $27 |
Operator Cherdchai Tour | Departure Time 07:30PM | Arrival Time 05:30AM | Duration 10h00 | Departure days Thu, Sat | Cheapest price $23 |
Operator Thaibus Tour | Departure Time 07:35PM | Arrival Time 05:25AM | Duration 9h50 | Departure days Thu, Sat | Cheapest price $23 |
Operator Budsarakham | Departure Time 07:40PM | Arrival Time 06:25AM | Duration 10h45 | Departure days Thu, Sat | Cheapest price $28 |
Live departures
Bangkok to Si Thoi bus times
The table below shows live departures for Bangkok to Si Thoi buses for today, Thursday, May 7. You can also manually refresh the results below to see updated bus journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
![]() | 5:00 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h45 | 3:45 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 5:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 9h45 | 3:15 AM Mae Ka, Phayao University | 0 transfersDirect | |
![]() | 5:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 9h45 | 3:15 AM Mae Ka, Phayao University 2 (forest Pavilion) | 0 transfersDirect | |
![]() | 5:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h00 | 3:30 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 6:00 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h00 | 4:00 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 6:40 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h30 | 5:10 AM Mae Ka, Phayao University 2 (forest Pavilion) | 0 transfersDirect | |
![]() | 6:40 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 11h00 | 5:40 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 7:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h00 | 5:30 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 7:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 9h45 | 5:15 AM Mae Ka, Phayao University 2 (forest Pavilion) | 0 transfersDirect | |
![]() | 7:30 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 9h45 | 5:15 AM Mae Ka, Phayao University | 0 transfersDirect | |
![]() | 7:35 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 9h50 | 5:25 AM Phayao, Bus Terminal | 0 transfersDirect | |
![]() | 7:40 PM Bangkok, Chatuchak Bus Terminal (Mo Chit 2) | 10h45 | 6:25 AM Phayao, Bus Terminal | 0 transfersDirect | |
This is the last bus of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets Bangkok to Si Thoi by bus or flight
Compare bus and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
May 08
May 09
May 10
May 11
May 12
May 13
May 14
Journey information
Overview: Bus from Bangkok to Si Thoi
Buses from Bangkok to Si Thoi run on average 6 times per day, taking around 9h 45m. Cheap bus tickets for this journey start at $20 (€16) if you book in advance.
There are 6 buses per day. The earliest bus runs at 18:00, the last at 20:35. The fastest bus covers the 390 miles (629 km) distance in 9h 45m.
Distance 390 miles (629 km) |
Average bus duration 9h 45m |
Cheapest ticket price $20 (€16) |
Buses per day 6 |
Direct buses 6 |
Fastest bus 9h 45m |
First bus 6:00 PM |
Last bus 8:35 PM |
Cheapest Month Jan |
Cheapest Day Fri |
High Season Apr - Jun |
Low Season Jul - Sep |
FAQs: Bus from Bangkok to Si Thoi
Find answers to the most common questions about traveling from Bangkok to Si Thoi by bus. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest bus, the cheapest option, or tips for making the most of your visit at Si Thoi, this guide helps you travel smarter and with confidence.

popular bus stations
Popular bus stations from Bangkok to Si Thoi
- 04:00-22:00
- Free Wi-Fi available throughout terminal
- Large parking area available for both short and long-term parking
- Food court and various food stalls available inside terminal
- Available at designated taxi stand outside terminal
- Wheelchair ramps and elevators available
- Public restrooms available with 5 THB fee
- BTS: Mo Chit Station
- MRT: Chatuchak Park Station
- Bus: 3, 26, 29, 34, 49, 52, 77
- 05:00-22:00
- Free Wi-Fi available throughout terminal
- Available at terminal parking lot, 20 baht per hour
- Food court and several local food vendors available inside terminal
- Available at designated taxi stand outside terminal
- Wheelchair ramps and elevators available
- Public restrooms available for 5 baht
- BTS: Mo Chit Station
- MRT: Chatuchak Park Station
- Bus: 3, 26, 77, 96, 104, 134, 136, 138, 145, 509, 522
- Local taxis available on demand
- Bus: Local buses to Phayao
- Available at the main road
Most popular bus connections from Bangkok
More options for your journey from Bangkok to Si Thoi
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