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Cheap flights from Hong Kong to Siem Reap

One-way from $160, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Fri, Oct 30Any priceSat, Oct 31Any priceSun, Nov 1Any priceMon, Nov 2$160Tue, Nov 3Any priceWed, Nov 4$179Thu, Nov 5Any priceFri, Nov 6Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$160
HK Express, flight UO 540Found 7 days ago, 1 adult
Check live price
7:35amHong KongMon, Nov 2
Travel time 4h, 1 stopHKGSAI
10:35amSiem ReapMon, Nov 2
$161
HK Express, flight UO 540Found 2 days ago, 1 adult
Check live price
7:35amHong KongWed, Dec 16
Travel time 4h, 1 stopHKGSAI
10:35amSiem ReapWed, Dec 16
$162
HK Express, flight UO 540Found 6 days ago, 1 adult
Check live price
7:35amHong KongWed, Dec 9
Travel time 4h, 1 stopHKGSAI
10:35amSiem ReapWed, Dec 9
$162
HK Express, flight UO 540Found 2 days ago, 1 adult
Check live price
7:35amHong KongFri, Dec 11
Travel time 4h, 1 stopHKGSAI
10:35amSiem ReapFri, Dec 11
$162
HK Express, flight UO 540Found 2 days ago, 1 adult
Check live price
7:35amHong KongSat, Dec 12
Travel time 4h, 1 stopHKGSAI
10:35amSiem ReapSat, Dec 12

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in CambodiaTravel eSIM from $4, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in Siem Reap, booked ahead at a fixed price.
    See options
  • Travel insuranceTravel insurance quotes for Cambodia from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu12345678910111213141516171819202122232425–26$18527–28–29$16730–31–

November 2026

MoTuWeThFrSaSu1–2$1603–4$1795–6–7–8–9–10$19611–12–13–14–15–16–17–18$19719$19920–21–22–23–24–25–26–27–28$17929–30–

December 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9$16210–11$16212$16213$16914$16215$16316$16117–18–19–20–21$22022$25623$2232425262728293031
$162 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Nov 2, $160.

Lowest fares by month

In the fares found this week, November has the lowest: from $160 one-way, against $203 in March 2027. Pick a month to see its cheapest date.

  1. Oct$167
  2. Nov$160
  3. Dec$161
  4. Jan$170
  5. Febno fares yet
  6. Mar$203
  7. Aprno fares yet
  8. Mayno fares yet
  9. Junno fares yet
  10. Julno fares yet
  11. Augno fares yet
  12. Sepno fares yet
$0$100$200$300Oct$160NovDecJanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October$167Thu, Oct 291 stop
November$160Mon, Nov 21 stop
December$161Wed, Dec 161 stop
January 2027$170Mon, Jan 181 stop
February 2027—
March 2027$203Fri, Mar 191 stop
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in Siem Reap. Average daily high and low and monthly precipitation, 1997–2010 normals.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare$167$160$161$170–$203––––––
High °C32°31°31°32°34°35°36°35°34°33°32°32°
Low °C25°23°21°20°22°24°25°25°25°25°25°25°
Precipitation mm200517452957150214193209288

Source: Siem Reap on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from Hong Kong to Siem Reap?

In the fares found this week, November has the lowest: from $160 one-way, against $203 in March 2027.

What is the weather in Siem Reap in November?

In November, the cheapest month to fly, the average daily high in Siem Reap is 31 °C and the low 23 °C.

Are there direct flights from Hong Kong to Siem Reap?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

Which day of the week is cheapest to fly?

In the fares we have, Monday departures are the cheapest, with a typical lowest fare of $177. Thursday is the priciest at about $199.

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