Cheap flights from Hanoi to Phnom Penh from $157 HAN → KTI
Noi Bai International Airport (HAN) → Techo International (KTI)
The cheapest return found recently is $367 with Vietjet, 2 Jan 2027 – 6 Jan 2027, found yesterday. The cheapest one-way found recently is $157 with Thai AirAsia, 26 Sept 2027, found today.
- Cheapest one-way found recently
- $157, found today
- Cheapest return found recently
- $367, 2 Jan 2027 to 6 Jan 2027
- Usual return price
- $326 to $345
- Cheapest month to fly
- December 2026, return fares from $306 found in the last 7 days
- Airlines with nonstop flights
- Vietnam Airlines, Air Cambodia
Return
The cheapest return fare on each of 4 departure dates is usually $326 to $345.
Cheapest return found recently
$367
2 Jan 2027 – 6 Jan 2027 · Vietjet
Noi Bai International Airport (HAN) → Techo International (KTI)
Leaves 4:45 p.m. · Return leaves 6:35 p.m. · 29 h 35 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$341
3 Jan 2027 – 3 Jan 2027 · Vietnam Airlines
Noi Bai International Airport (HAN) → Techo International (KTI)
Leaves 9:25 a.m. · Return leaves 9:55 p.m. · 5 h 30 min of travel, both ways together
out nonstop, back nonstop
found 3 days ago
Found recently, and the cheapest we hold
$367 2 Jan 2027 – 6 Jan 2027found yesterdaySee prices for these dates
$306 5 Dec – 23 Decfound 4 days agoSee prices for these dates
What have prices looked like?
Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $223 to $327.
At $367, the cheapest return found recently is above that range.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 4 departure dates from 5 Dec to 1 May 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 4-night return fares leaving within 3 days of 2 Jan 2027 to compare.
Every date we hold
18 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 5 Dec – 23 Dec | $306 | Air Cambodia | Noi Bai International Airport (HAN) → Techo International (KTI) | out nonstop, back nonstop | found 4 days ago | See prices for these dates |
| 2 Jan 2027 – 6 Jan 2027 | $367 | Vietjet | Noi Bai International Airport (HAN) → Techo International (KTI) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 3 Jan 2027 – 3 Jan 2027 | $337 | Vietnam Airlines | Noi Bai International Airport (HAN) → Techo International (KTI) | out 1 stop, back nonstop | found 3 days ago | See prices for these dates |
| 1 May 2027 – 4 May 2027 | $332 | Vietnam Airlines | Noi Bai International Airport (HAN) → Techo International (KTI) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $306.
Airlines on the cheapest dates: Vietnam Airlines, Air Cambodia, Vietjet.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$157
26 Sept 2027 · Thai AirAsia
Noi Bai International Airport (HAN) → Techo International (KTI)
Leaves 9:05 a.m. · 8 h 40 min trip
1 stop
found today
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$157 26 Sept 2027found todayOpen this trip
$153 14 Sept 2027found 4 days agoOpen this trip
What have prices looked like?
Over 5 days, 29 Sept to 12 Nov, the cheapest one-way we saw each day was $150 to $153.
At $157, the cheapest one-way found recently is above that range.
5 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 26 Sept 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 14 Sept 2027 | $153 | Vietnam Airlines | Noi Bai International Airport (HAN) → Techo International (KTI) | 1 stop | found 4 days ago | Open this trip |
| 26 Sept 2027 | $157 | Thai AirAsia | Noi Bai International Airport (HAN) → Techo International (KTI) | 1 stop | found today | Open this trip |
Airlines on the cheapest dates: Vietnam Airlines, Thai AirAsia.
Premium cabin fares from Hanoi to Phnom Penh
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 2 Jan 2027 – 6 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 26 Sept 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Hanoi to Phnom Penh?
Return
Fares 7 to 13 days before departure were typically 9% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (50 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $305 | $297 | +10% | 7 |
| 7–13 days | $277 | $255 | Cheapest seen | 16 |
| 14–29 days | $308 | $255 | +11% | 19 |
| 30–59 days | $303 | $223 | +9% | 40 |
| 60–89 days | $281 | $271 | +1% | 18 |
| 90–179 days | $323 | $270 | +17% | 34 |
| 180+ days | $320 | $320 | +16% | 8 |
One-way
Not enough history yet: we have 5 days of one-way prices, 29 Sept to 12 Nov, and compare booking times once 3 booking ranges have 7 days each.
Live price for these dates
The cheapest return found recently is for 2 Jan 2027 – 6 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Hanoi to Phnom Penh?
The cheapest return found recently is $367 with Vietjet, 2 Jan 2027 to 6 Jan 2027, found yesterday. The cheapest return we hold, of any age, is $306 with Air Cambodia, 5 Dec to 23 Dec, found 4 days ago. The cheapest return fare on each of 4 departure dates is usually $326 to $345.
How much is a one-way flight from Hanoi to Phnom Penh?
The cheapest one-way found recently is $157 with Thai AirAsia, 26 Sept 2027, found today. The cheapest one-way we hold, of any age, is $153 with Vietnam Airlines, 14 Sept 2027, found 4 days ago.
What is the cheapest month to fly from Hanoi to Phnom Penh?
December 2026 is the cheapest month for a return, from $306, 5 Dec to 23 Dec, found 4 days ago.
How far ahead should I book a flight from Hanoi to Phnom Penh?
In 50 days of prices between 24 Sept and 12 Nov, return fares 7 to 13 days before departure were typically 9% lower than 0 to 6 days before departure.
Is there a direct flight from Hanoi to Phnom Penh?
Yes, the cheapest nonstop return found recently is $341 with Vietnam Airlines, 3 Jan 2027 to 3 Jan 2027, found 3 days ago.
How long is the flight from Hanoi to Phnom Penh?
The cheapest one-way found recently, with Thai AirAsia on 26 Sept 2027, takes 8 h 40 min with 1 stop.
Which airlines have the cheapest flights from Hanoi to Phnom Penh?
Between 5 Dec and 1 May 2027, Vietnam Airlines has the cheapest return on 2 of the 4 departure dates we hold, Air Cambodia on 1 and Vietjet on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work