There are 7 ways to get from Udon Thani to Siem Reap by plane, train, bus or car

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2rio's travel planner.

Recommended option

Fly from Udon Thani  •  3 h 11 min

  1. Fly from Udon Thani (UTH) to Siem Reap (REP) UTH - REP

$90 - $292

Cheapest option

Train, bus  •  18 h 49 min

  1. Take the train from Udon Thani to Bang Sue 76 Nong Khai - Hua Lamphong - Class II AC
  2. Take the bus from Bangkok Mochit Bus Terminal to Siem Reap

$22 - $67

5 alternative options

Train to Vientiane, fly  •  15 h 21 min

  1. Take the train from Udon Thani to Nong Khai
  2. Fly from Vientiane (VTE) to Siem Reap (REP) VTE - REP

$175 - $442

Bus Air Udon  •  16 h

  1. Take the bus from Udonthani Terminal to Bangkok Mochit Terminal
  2. Take the bus from Bangkok Mochit Bus Terminal to Siem Reap

$22 - $39

Bus via Nakhon Ratchasima  •  16 h 29 min

  1. Take the bus from Udonthani to Nakhon Ratchasima
  2. Take the bus from Nakhon Ratchasima to Aranyaprathet
  3. Take the bus from Poipet to Siem Reap Virak Buntham Express

$22 - $26

Train, bus via Amphoe Aranyaprathet  •  22 h 26 min

  1. Take the train from Udon Thani to Hua Lamphong
  2. Take the train from Hua Lamphong to Aranyaprathet
  3. Take the bus from Poipet to Siem Reap Virak Buntham Express

$29 - $88

Drive  •  9 h 11 min

  1. Drive from Udon Thani to Siem Reap 377 miles

$45 - $75

Questions & Answers

The cheapest way to get from Udon Thani to Siem Reap is to bus which costs ฿700 - ฿900 and takes 16 h 29 min.

More details

The quickest way to get from Udon Thani to Siem Reap is to fly which costs ฿2900 - ฿10000 and takes 3 h 11 min.

More details

The distance between Udon Thani and Siem Reap is 465 km. The road distance is 603.1 km.

Get driving directions

It takes approximately 3 h 11 min to get from Udon Thani to Siem Reap, including transfers.

More details

No, there is no direct bus from Udon Thani to Siem Reap. However, there are services departing from Udonthani Terminal and arriving at Siem Reap via Bangkok Mochit Bus Terminal. The journey, including transfers, takes approximately 16 h.

More details

What companies run services between Udon Thani, Thailand and Siem Reap, Cambodia?

Thai AirAsia, Thai Smile and three other airlines fly from Udon Thani to Siem Reap every 2 hours. Alternatively, you can take a bus from Udon Thani to Siem Reap via Bangkok Mochit Terminal and Bangkok Mochit Bus Terminal in around 16 h.

Airlines
Thai AirAsia
Website
airasia.com
Flights from Udon Thani to Siem Reap via Don Muang
Ave. Duration
3 h 23 min
When
Every day
Estimated price
$65 - $180
Flights from Vientiane to Siem Reap via Don Muang
Ave. Duration
7 h 15 min
When
Every day
Estimated price
$50 - $160
Lao Airlines
Website
laoairlines.com
Flights from Vientiane to Siem Reap via Luang Prabang
Ave. Duration
4 h 10 min
When
Monday, Wednesday, Friday and Sunday
Estimated price
$120 - $340
Flights from Vientiane to Siem Reap via Pakse
Ave. Duration
6 h
When
Monday, Wednesday and Friday
Estimated price
$120 - $340
Flights from Vientiane to Siem Reap via Savannakhet, Pakse
Ave. Duration
5 h 55 min
When
Monday, Wednesday and Friday
Estimated price
$120 - $340
Vietnam Airlines
Website
vietnamairlines.com
Flights from Vientiane to Siem Reap via Phnom Penh
Ave. Duration
5 h
When
Tuesday, Thursday, Friday and Saturday
Estimated price
$310 - $700
Flights from Vientiane to Siem Reap via Hanoi
Ave. Duration
5 h 10 min
When
Every day
Estimated price
$310 - $700
Flights from Vientiane to Siem Reap via Phnom Penh, Ho Chi Minh City
Ave. Duration
5 h 40 min
When
Every day
Estimated price
$310 - $700
Thai Smile
Website
thaismileair.com
Flights from Udon Thani to Siem Reap via Suvarnabhumi
Ave. Duration
4 h
When
Every day
Estimated price
$150 - $430
Flights from Vientiane to Siem Reap via Suvarnabhumi
Ave. Duration
6 h 55 min
When
Every day
Estimated price
$120 - $390
Bangkok Airways
Website
bangkokair.com
Flights from Vientiane to Siem Reap via Suvarnabhumi
Ave. Duration
4 h 2 min
When
Every day
Estimated price
$160 - $500
Cambodia Angkor Air
Website
cambodiaangkorair.com
Flights from Vientiane to Siem Reap via Phnom Penh
Ave. Duration
5 h
When
Tuesday, Thursday, Friday and Saturday
Estimated price
$310 - $700
Flights from Vientiane to Siem Reap via Phnom Penh, Ho Chi Minh City
Ave. Duration
5 h 40 min
When
Every day
Estimated price
$310 - $700
China Eastern Airlines
Website
en.ceair.com
Flights from Vientiane to Siem Reap via Kunming
Ave. Duration
7 h 20 min
When
Monday, Wednesday and Friday
Estimated price
$420 - $1,800
Train operators
State Railway of Thailand
Website
railway.co.th
Train from Udon Thani to Nong Khai
Ave. Duration
38 min
Frequency
Once daily
Estimated price
$7 - $28
Schedules at
railway.co.th
Book at
12go.asia
3rd Class (Seat)
$1 - $5
2nd Class (Seat)
$7 - $11
2nd Class (Berth)
$16 - $22
1st Class (Berth)
$21 - $28
Train from Udon Thani to Bang Sue
Ave. Duration
10 h 5 min
Frequency
Once daily
Estimated price
$12 - $45
Schedules at
railway.co.th
Book at
12go.asia
3rd Class (Seat)
$5 - $9
2nd Class (Seat)
$12 - $17
2nd Class (Berth)
$21 - $28
1st Class (Berth)
$30 - $45
Train from Udon Thani to Hua Lamphong
Ave. Duration
10 h 30 min
Frequency
Once daily
Estimated price
$12 - $45
Schedules at
railway.co.th
Book at
12go.asia
3rd Class (Seat)
$5 - $9
2nd Class (Seat)
$12 - $17
2nd Class (Berth)
$21 - $28
1st Class (Berth)
$30 - $45
Train from Hua Lamphong to Aranyaprathet
Ave. Duration
5 h 40 min
Frequency
Once daily
Estimated price
$9 - $35
Schedules at
railway.co.th
Book at
12go.asia
3rd Class (Seat)
$3 - $6
2nd Class (Seat)
$9 - $13
2nd Class (Berth)
$18 - $24
1st Class (Berth)
$26 - $35
Bus operators
Air Udon
Website
12go.asia
Bus from Udonthani Terminal to Bangkok Mochit Terminal
Ave. Duration
8 h
Frequency
Every 4 hours
Estimated price
$13
Schedules at
12go.asia
Nakhonchai Air
Website
nakhonchaiair.com
Bus from Udonthani to Bangkok Mochit Bus Terminal
Ave. Duration
8 h 52 min
Frequency
Every 4 hours
Estimated price
$13 - $16
Schedules at
www2.nakhonchaiair.com
Book at
nakhonchaiair.com
Sawadee Esan
Website
12go.asia
Bus from Udonthani to Bangkok Mochit Bus Terminal
Ave. Duration
9 h 30 min
Frequency
Twice daily
Estimated price
$15
Schedules at
12go.asia
Book at
12go.asia
Nattakan Transport
Bus from Bangkok Mochit Terminal to Siem Reap Cambodia
Ave. Duration
7 h
Frequency
Twice daily
Estimated price
$28
Schedules at
nattakan-transport.com
Book at
bookmebus.com
Suvarnabhumi Airport Bus
Website
suvarnabhumiairport.com
Bus from Udonthani to Nakhon Ratchasima
Ave. Duration
5 h 19 min
Frequency
Once daily
Estimated price
$8 - $12
Schedules at
bangkokairportonline.com
bus
Bus from Nakhon Ratchasima to Aranyaprathet
Ave. Duration
5 h
Frequency
5 times a day
Estimated price
$6
Virak Buntham
Website
virakbuntham.com
Bus from Poipet to Siem Reap Virak Buntham Express
Ave. Duration
3 h
Frequency
Twice daily
Estimated price
$7
Schedules at
virakbuntham.com
Book at
bookmebus.com

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