KTI

Find Cheap Flights to Phnom Penh – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

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Best reviews • 8.2 score
Airline reviews
Airline reviews
When to book
in advance
Our data shows that travellers who book at least 17 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
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Flight Deals

Cheap Flights to Phnom Penh

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Phnom Penh

Multiple Airlines Logo
SYD  Sydney Airport-KTI Phnom Penh Techo Intl
11282 kmmulti-stop
Multiple Airlines Logo
KTI  Phnom Penh Techo Intl-SYD Sydney Airport
11282 kmmulti-stop
Multiple Airlines
Multiple Airlines Logo
MEL  Melbourne Airport (Tullamarine)-KTI Phnom Penh Techo Intl
11024 kmmulti-stop
Multiple Airlines Logo
KTI  Phnom Penh Techo Intl-MEL Melbourne Airport (Tullamarine)
11024 kmmulti-stop
Multiple Airlines
Booking Insights

Price, demand, and travel trends for Australia to Phnom Penh flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Australia to Phnom Penh with more confidence.

What is the cheapest day to fly to Phnom Penh?

Wednesday is the cheapest day to fly to Phnom Penh at $1,057 return on average over the past 12 months on KAYAK. Tuesday is the most expensive at $1,235.

What is the cheapest month to fly to Phnom Penh?

  • February is the cheapest month to fly to Phnom Penh with an average price of $850 return.
  • December ($1,632) and June ($1,185) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Phnom Penh?

Morning flights to Phnom Penh are the cheapest at $1,099 return on average. Afternoon flights are the most expensive at $1,196.

When are flights to Phnom Penh the cheapest?

Flights to Phnom Penh are cheapest 17 weeks before departure. Booking in this window typically costs about 33% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Phnom Penh

Low season

September
Best time to beat the crowds (4% less expensive on average)
Most popular time to fly (49% more expensive on average)

When to book flights to Phnom Penh

Are your dates flexible? Find out the best times to travel to Phnom Penh based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Phnom Penh, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Phnom Penh?

    Malaysia Airlines operates the most flights from Australia to Phnom Penh at 0 per week, while Singapore Airlines is the airline most often selected by KAYAK users searching for flights from Australia to Phnom Penh. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • How do I know if a flight to Phnom Penh is a good deal?

    A good deal on a flight to Phnom Penh is around $859 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Phnom Penh?

    Last-minute fares to Phnom Penh – booked within 2 weeks of departure – run 16% above the average return fare of $1,097.

Your guide to booking Phnom Penh flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Phnom Penh, aim to book around 17 weeks before you fly. That window historically saves about 33% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Phnom Penh, recent KAYAK data shows that stronger deals tend to be around $859 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Phnom Penh in February. Return fares historically average $850 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to morning to save up to $97 per return. Morning flights to Phnom Penh average $1,099 compared to $1,196 for midday flights. See the time-of-day chart above for the full breakdown.

Reviews of the top 5 airlines flying to Phnom Penh

 
Need help choosing which airline to fly with to Phnom Penh? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1600 reviews
8.6Crew
7.8Food
8.1Entertainment
8.3Boarding
8.0Comfort
Airline reviews

I had the worst experience of my life in travel. Due to circumstances beyond my control (catastrophic traffic accidents on the highway between Gold Coast and Brisbane) I missed my flight for the first time ever. Because I booked through Kayak Singapore Airlines were not interested in helping me. They told me to contact the agent that I booked through. I was extremely stressed as I had connecting flights in Europe. First Kayak told me that the next available flights were in four days time. Then they told me that they could do it but at a cost of $2600 AUD. When I agreed he told me that he was having trouble getting it through Singapore’s system and he would contact me further once it had been done. When I had not heard from him after several hours, I phoned Kayak again, spoke to a different person who said he could do it for $8200. I declined and told him to cancel the booking. The worst part of this experience was that I had booked 5 flights altogether with Singapore including Premium Economy on two legs and Singapore cancelled all my flights including the return legs leaving me with having to completely reschedule my entire trip. Kayak refunded me $2000 from $5200, obviously leaving me out of pocket. This has left me feeling that I will never deal with Kayak or Singapore Airlines again.

2.0 MediocreJanine, July 2026
Read more Singapore Airlines reviews

I had the worst experience of my life in travel. Due to circumstances beyond my control (catastrophic traffic accidents on the highway between Gold Coast and Brisbane) I missed my flight for the first time ever. Because I booked through Kayak Singapore Airlines were not interested in helping me. They told me to contact the agent that I booked through. I was extremely stressed as I had connecting flights in Europe. First Kayak told me that the next available flights were in four days time. Then they told me that they could do it but at a cost of $2600 AUD. When I agreed he told me that he was having trouble getting it through Singapore’s system and he would contact me further once it had been done. When I had not heard from him after several hours, I phoned Kayak again, spoke to a different person who said he could do it for $8200. I declined and told him to cancel the booking. The worst part of this experience was that I had booked 5 flights altogether with Singapore including Premium Economy on two legs and Singapore cancelled all my flights including the return legs leaving me with having to completely reschedule my entire trip. Kayak refunded me $2000 from $5200, obviously leaving me out of pocket. This has left me feeling that I will never deal with Kayak or Singapore Airlines again.

Crew were so busy Anna so awesome. I was in a seat that got my food nearly last but the crew were Just awesome.

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

Headwind delayed our flight which wasn’t the airlines fault

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

Food could have been better. Too many passengers getting up and down all the time.

Delayed 1hour due to storm still didn't get window seat for third flight despite paying £240 extra to book them

It was an average flight. I would have expected more from this airline. Food, seats, service, etc was just average. I just give them some extra points for offering free WiFi on board with just a Krisflyer account.

Check in was easy through self-check-in kiosks just like domestic flights. Staff onboard were fantastic. Some "book the cook" good options weren't great, others really good. Entertainment options a bit limited to what I've experienced on Qantas. Overall a good flight though, especially for the price.

Crews are not allowed to perform any service whenever the captain deems there’s a chance of turbulence. Even if it is perfectly smooth air.

I upgraded my flight to business and before boarding they told me they will not have food on the flight unless someone declines the food service.

Flight was kept super cold. I was shivering and had to layer up.

I love the comfortable business class seats. The service was excellent. Staff was friendly.

Food , drink experience were great with Cathay. Crew service was excellent. Clean toilet and full snack bars always, pilot took of 26minutes later when boarding at Hong Kong with extra US customs check at gate 9 for US flight, but he managed to arrive only 2 minutes later from flight tracker. Smooth flight .

If I had blood clots, that window seat would've killed me for certain.

Cathay Pacific helps me with the planning due to weather delays. Well planed flights.

The crew staffs are very nice. The temperature is too low.

The crew were fine. I didn’t enjoy the food at all. I found it unappetising and really had trouble eating it. The comfort level was fine and our return flight is with Cathay Pacific but honestly I probably wouldn’t fly Cathay Pacific again.

We requested special assistance and Cathay Pacific provided it in Sydney, but we were completely forgotten about in Hong Kong - when we really needed the help to catch our connecting flight. Really disappointing service.

The staff were excellent considering it was a jam packed flight. We had to wait nearly an hour for our baggage to appear on the carousel. That was a real shame.

Seats not comfortable. We had requested vegan meal and it wasn’t given.

did not get a notification about seat selection ahead of time. We didn't end up sitting together.

I was denied boarding at the Brisbane airport and it seems like I won’t get any refunds from the airline

Overall I had good experience with China Southern airline. Nothing to claim. I hoped they could improve the meal quality that is.

The airport didn‘t give me the ticket. I called customer service to ask for a refund but they kept giving me a perfunctory response and refused to refund me.

The flight was delayed hours and most flights from CS are always delayed. Plane was efficient and got us home but not the best food and no entertainment system at all.

Crew: Everybody was polite. People just need to get efficient and less reworking things. Entertainment: Could have move movies and games. The “music” section is a joke, only ONE available. Food: The food provided on the flights boarding in china needs a serious reworking. Too much oil, bad for your stomach, tastes too artificial and the eggs were a giant mass of green dough.

Food was terrible. Fish was equal to a sausage and scrumbled eggs were terribly green with a quite weird fllavour. Everybody with me hated all options. The best food was the bread with butter.

No good but was short flight. Both of our China Southern flights were on time. No surprises.

The food was perfect. The boarding process is a bit long. Given the late boarding time, I felt very tired by the time I was seated.

Overall experience is good but if the food menu can change to authentic Malaysia food will be good. I.e. Nasi Lemak, Char Kueh Tiew and etc

Food was good but only 1 meal and 1 pie, instead of 2 meals. Both legs were late.

OK seats comfortable, easy boarding/embarking, excellent connection to domestic Malaysia flight with baggage checked through without customs. Catering especially drinks borderline ok luckily less important aspect

The flight isn’t great, as the plane has faulty with light and noise. It blinks and make noise for 8hrs non stop! Causing health and sensory issues! Causing Hazard matter to all 3 babies that on bassinet seats. This matters affected 12 passengers and the most horrible flight I ever experience. Have been flying with MAS for more 30yrs and this is the worst! Very disappointed

Did not take as cancelled 3 time so took another airline

It was a 2-hour flight so they didn't have much time for serving food. There was some turbulence so they could not serve hot coffee or tea for the safety reason. Good service, good tasting food, nice plane, a little bit of delay.

chaos boarding. Crew in business class seemed short staffed and lacking in attention to details initially, but did improve during flight.

Delayed, not enough information. Had to ask for refreshments, crew could have been more proactive

Orange juice change to mineral water . Should keep the orange juice.

I had purchased extra leg room for all legs of the flight but due to a delay in leaving Perth I was put on another flight but with Emirates. My luggage was initially lost but later found and my suitcase was broken. I ended up losing my upgrades

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