Cheap flights from Siem Reap to Udon Thani

Siem Reap
SAI
Udon Thani
UTH

Flight deals from Siem Reap to Udon Thani

Below you can see the best deals on flights Siem Reap — Udon Thani for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 24 August, from $136.

Top 10 cheap flights from Siem Reap to Udon Thani

K6
K6
DD
$ 197

Siem Reap — Udon Thani

22:20—15:50
12 Aug 2026
17 h 30 m
2 stops
K6
K6
DD
$ 197

Siem Reap — Udon Thani

22:20—17:30
12 Aug 2026
19 h 10 m
2 stops
FD
DD
$ 205

Siem Reap — Udon Thani

17:15—15:50
12 Aug 2026
22 h 35 m
1 stop
FD
DD
$ 205

Siem Reap — Udon Thani

17:15—17:30
12 Aug 2026
24 h 15 m
1 stop
FD
DD
$ 205

Siem Reap — Udon Thani

11:55—17:30
13 Aug 2026
5 h 35 m
1 stop
FD
DD
$ 205

Siem Reap — Udon Thani

16:55—07:10
13 Aug 2026
38 h 15 m
1 stop
FD
DD
$ 205

Siem Reap — Udon Thani

11:55—07:10
13 Aug 2026
43 h 15 m
1 stop
FD
DD
$ 205

Siem Reap — Udon Thani

16:55—07:10
14 Aug 2026
14 h 15 m
1 stop
FD
DD
$ 208

Siem Reap — Udon Thani

17:15—07:10
12 Aug 2026
13 h 55 m
1 stop
FD
DD
$ 208

Siem Reap — Udon Thani

17:15—07:10
12 Aug 2026
37 h 55 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Siem Reap — Udon Thani flight

Looking for cheap flights from Siem Reap to Udon Thani? There are no direct flights on this route, but you can compare convenient connections and fares from different airlines, then book your Siem Reap — Udon Thani ticket online.

There are no direct flights — tickets are sold with a connection (usually via Don Mueang International Airport), the whole trip with a connection takes about 21 h 5 min, flights are operated by Thai AirAsia, Thai Lion Air, the distance between the cities is around 457 km.

Planning your trip? You may find our Udon Thani travel guide, how to get from the airport into town and Udon Thani weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $136Min. price
AugustCheapest
JanuaryPeak season
NoDirect flights
457 kmDistance
4 h 15 minTravel time

Flight ticket prices by day: Siem Reap — Udon Thani

Below is a calendar of the lowest flight ticket prices for Siem Reap — Udon Thani by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $136 in August, and the most expensive are around $221 in January. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Siem Reap to Udon Thani by month. Tickets are usually cheapest in September (around $196) and priciest in January (about $257) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$257highMay$208lowSep$196low
Feb$251highJun$202lowOct$202low
Mar$233mediumJul$221mediumNov$227medium
Apr$245highAug$221mediumDec$257high

Some values are estimated based on seasonality.

When to fly

Weather in Udon Thani: it is warmest in April (up to 36 °C on average) and coolest in December (around 28 °C). The driest month is January.

Tickets are usually cheapest in August and most expensive in January. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Udon Thani

Dry and wet days · Udon Thani

Wind speed and direction · Udon Thani

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How to get the best deal on a Siem Reap — Udon Thani ticket

  • Book ahead: fares for Siem Reap — Udon Thani are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to Udon Thani is usually August — plan your trip around it if your dates are flexible.
  • There are no direct flights — travellers usually connect via Don Mueang International Airport. Compare different connections: a layover adds time but lowers the price.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Siem Reap — Udon Thani route are operated by 2 airlines; Thai AirAsia runs the most flights. There are no direct flights — compare carriers and convenient connections below.

There are no direct flights on the Siem Reap — Udon Thani route. Showing airlines offering connecting flights.
  • Thai AirAsiaFD
    WebsiteFleet: 5618.9M pax/year
    • SAI → DMK → UTH (with stopover)
    Open →
  • Thai Lion AirSL
    WebsiteFleet: 184M pax/year
    • SAI → DMK → UTH (with stopover)
    Open →

Cities and airports on the Siem Reap — Udon Thani route

Flights Siem Reap — Udon Thani depart from Siem Reap International Airport and arrive at Udon Thani International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Siem Reap

SAI
Cambodia
About the cityHow to get thereWeatherAll about the country Cambodia
Arrival

Udon Thani

UTH
Thailand
About the cityHow to get thereWeatherAll about the country Thailand
Departure airports
Arrival airports

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Frequently asked questions about the Siem Reap — Udon Thani flight

How long is the flight from Siem Reap to Udon Thani?

There are no direct flights, so travel time depends on the connection in Don Mueang International Airport. Based on search data, the whole trip takes about 21 h 5 min including the layover.

How far is it from Siem Reap to Udon Thani?

The distance from Siem Reap to Udon Thani is about 457 km.

Are there direct flights from Siem Reap to Udon Thani?

There are no nonstop flights on this route — tickets are only available with a connection (usually via Don Mueang International Airport).

Which airlines fly from Siem Reap to Udon Thani?

Airlines operating Siem Reap — Udon Thani include Thai AirAsia, Thai Lion Air. See the full list with schedules in the "Airlines" section on this page.

Which airports do Siem Reap — Udon Thani flights use?

Flights from Siem Reap depart from Siem Reap International Airport, and arrive at Udon Thani International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Siem Reap to Udon Thani?

The price of a Siem Reap — Udon Thani ticket depends on your travel date, season and demand: it is usually cheapest to fly in August, and most expensive in January. Tickets typically cost between $136 and $221. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Siem Reap — Udon Thani?

Flights Siem Reap — Udon Thani are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is August. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Siem Reap to Udon Thani?

To catch a low fare Siem Reap — Udon Thani, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually August.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

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