KTI

$309 Find Cheap Flights to Phnom Penh - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 19% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$584
Typical prices: $930-$1,522
Singapore Airlines
Mon 1/15Mon 1/22
SEA - KTI • 1 stop
Cheapest one-way
$314
Typical prices: $494-$893
Singapore Airlines
Sat 2/24
SFO - KTI • 1 stop
Top airlines
Best reviews • 8.5 score
Airline reviews
Airline reviews
When to book
in advance
Our data shows that travelers who book at least 22 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
+1
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Phnom Penh!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Phnom Penh

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

Recent round-trip flight deals to Phnom Penh

Fri, Jan 15 - Fri, Jan 22
Singapore Airlines Logo
8:40 am - 1:45 pmSEA  Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl
38h 05m1 stop Singapore Changi
Singapore Airlines Logo
9:35 am - 7:05 amKTI  Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl
36h 30m1 stop Singapore Changi
$584Singapore Airlines
Tue, Jan 19 - Tue, Jan 26
Singapore Airlines Logo
8:40 am - 1:45 pmSEA  Seattle/Tacoma Intl-KTI Phnom Penh Techo Intl
38h 05m1 stop Singapore Changi
Singapore Airlines Logo
9:35 am - 7:05 amKTI  Phnom Penh Techo Intl-SEA Seattle/Tacoma Intl
36h 30m1 stop Singapore Changi
$609Singapore Airlines
Tue, Nov 17 - Tue, Apr 20
Air China Logo
8:55 pm - 11:10 pmLAX  Los Angeles-KTI Phnom Penh Techo Intl
35h 15m2 stops Shenzhen Beijing Capital
Air China Logo
12:15 pm - 7:00 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
20h 45m1 stop Shenzhen
$719Air China
Thu, Nov 5 - Wed, Dec 2
Air China Logo
10:25 pm - 11:10 pmLAX  Los Angeles-KTI Phnom Penh Techo Intl
33h 45m1 stop Beijing Capital
Air China Logo
11:40 am - 7:00 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
46h 20m2 stops Shenzhen Beijing Capital
$722Air China
Mon, Nov 30 - Mon, Dec 7
China Southern Logo
10:00 pm - 3:05 pmLAX  Los Angeles-KTI Phnom Penh Techo Intl
26h 05m1 stop Guangzhou Baiyun
China Southern Logo
4:10 pm - 6:30 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
17h 20m1 stop Guangzhou Baiyun
$725China Southern
Mon, Nov 16 - Tue, Dec 22
China Eastern Logo
11:30 am - 12:15 amLAX  Los Angeles-KTI Phnom Penh Techo Intl
21h 45m1 stop Shanghai Pu Dong
China Eastern Logo
1:25 am - 9:05 amKTI  Phnom Penh Techo Intl-LAX Los Angeles
22h 40m1 stop Shanghai Pu Dong
$726China Eastern
Mon, Nov 16 - Tue, Dec 22
China Eastern Logo
11:30 am - 11:35 amLAX  Los Angeles-KTI Phnom Penh Techo Intl
57h 05m2 stops Shanghai Pu Dong Kunming Changshui
China Eastern Logo
1:25 am - 9:05 amKTI  Phnom Penh Techo Intl-LAX Los Angeles
22h 40m1 stop Shanghai Pu Dong
$727China Eastern
Thu, Nov 5 - Thu, Nov 12
XiamenAir Logo
10:55 pm - 5:05 pmLAX  Los Angeles-KTI Phnom Penh Techo Intl
27h 10m1 stop Xiamen Gaoqi Intl
XiamenAir Logo
12:50 pm - 7:00 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
21h 10m1 stop Xiamen Gaoqi Intl
$735XiamenAir
Thu, Jan 14 - Sun, Feb 14
XiamenAir Logo
10:55 pm - 11:45 amLAX  Los Angeles-KTI Phnom Penh Techo Intl
21h 50m1 stop Xiamen Gaoqi Intl
XiamenAir Logo
12:50 pm - 7:00 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
21h 10m1 stop Xiamen Gaoqi Intl
$735XiamenAir
Sun, Nov 15 - Wed, Dec 2
China Southern Logo
10:00 pm - 10:50 amLAX  Los Angeles-KTI Phnom Penh Techo Intl
21h 50m1 stop Guangzhou Baiyun
China Southern Logo
11:55 am - 6:30 pmKTI  Phnom Penh Techo Intl-LAX Los Angeles
21h 35m1 stop Guangzhou Baiyun
$758China Southern
Booking Insights

Price, demand and travel trends for flights to Phnom Penh

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

What is the cheapest flight to Phnom Penh?

Seattle to Phnom Penh is the cheapest route at $584 round-trip, found in the past 5 days on KAYAK. Los Angeles to Phnom Penh is the most popular connection with round-trip deals from $719.

What is the cheapest day to fly to Phnom Penh?

Sunday is the cheapest day to fly to Phnom Penh at $1,183 round-trip on average over the past 12 months on KAYAK. Friday is the most expensive at $1,328.

What’s the cheapest month to fly to Phnom Penh?

•September is the cheapest month to fly to Phnom Penh with an average price of $971 round-trip.
•June ($1,513) and December ($1,489) 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?

Afternoon flights to Phnom Penh are the cheapest at $1,199 round-trip on average. Evening flights are the most expensive at $1,363.

When are flights to Phnom Penh the cheapest?

Flights to Phnom Penh are cheapest 22 weeks before departure. Booking in this window typically costs about 20% 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

Cheapest flight

$314
Beat the crowds with an average 26% drop in travelers.
The most popular month to fly with an average 17% increase in travelers.
One-way flight from San Francisco to Phnom Penh

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 round-trip 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.

  • 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 $930 round-trip. This fare is in the lowest 25% of round-trip 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) are typically 8% higher than the average round-trip fare of $1,186.

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

    EVA Air operates the most flights from the United States to Phnom Penh at 0 per week, while Cathay Pacific is the airline most often selected by KAYAK users searching for flights from the United States to Phnom Penh. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

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, book around 22 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 20% lower during this window than last-minute fares.
  • For flights to Phnom Penh, a good round-trip fare is around $930. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to Phnom Penh in September. Round-trip fares historically average $971, making September the cheapest month to travel based on KAYAK data from 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 ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to noon to save up to $164 per round-trip. Noon flights to Phnom Penh average $1,199 compared to $1,363 for afternoon flights.

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.
8.5
EVA AirOverall score based on 1545 reviews
8.3Comfort
8.0Entertainment
8.1Food
8.5Boarding
8.7Crew
Airline reviews

Likes: Comfort and cleanliness Dislike: 2 hours layover in Manila is not enough to change plain, immigration, collect baggage and change of terminal

10.0 Excellentrey, Sep 2026
Read more EVA Air reviews

Likes: Comfort and cleanliness Dislike: 2 hours layover in Manila is not enough to change plain, immigration, collect baggage and change of terminal

The flight was delayed and food was averiage - only sandwich. The flight attendants were good and gave outstanding customer service 👍🏼

They forced me to check a bag. When Kayak sold me these tickets I was not informed of carry on baggage weight limits.

Great food on both legs and fast customer service from the stewardesses....

The food was great; the attendants were pleasant. Waiting to onboard felt stressful, as passengers who had connecting flights at SEA had to be verified again for two things before getting a real boarding pass: passport and carry-on luggage weight. The boarding pass issued by another airline (i.e., the first leg of my trip) did not count. The S terminal at SEA was barren, with lots of sensory overloads because every airline was repeatedly broadcasting long lists of names of passengers who had not gone through that verification process. The carry-on luggage weight check seemed futile to me. I saw a woman who opened her over-weight suitcase to move some items into her shoulder bag. She still boarded with two huge bags with her. I assume this check is an endeavor of ensuring fairness of the overhead bin space or optimizing fuel efficiency when gas price is through the roof, but I don't know if either goal is achieved. Nonetheless I respect the crew's dedication to the SOP.

Food tasted like the meat had freezer burn. Another thing all of our 4 check baggage was left somewhere and my oral medication for my diabetes was left in one of the lost luggage..most of the flight attendants did not know how to communicate in English.. the trip was a total nightmare

The crew need to be more friendly it seem everything such a rush situation during dinner and breakfast. Smiles to the passenger go such a long way just the service from Seattle to Taipei, service from Taipei to Bangkok were great more pleasant the flight attendant from Thailand she was very nice, as far as entertainment were amazing , wiffi connection was incredible great, I will be able to charged my phone from Seattle to Taipei and from taipei to Bangkok I won’t be able to do so flight attendant told me that because I don’t have the original iPhone charger connection has nothing to do what type of charger I have so she said there is nothing she can do about it. Foods : from Seattle to Taipei were ok no flavor , from Taipei to Bangkok I have chicken teriyaki the rice is overcooked all the flavor stuck on the aluminum wraps , breakfast the congee was on point and delicious. Will I recommend anyone to fly with Eva air go for it so you can experience yourself for myself I won’t fly with them again I’m gonna stick with Singapore airlines instead.

Never went. Got rescheduled with Phillipine Airlines to Bali, which was fine.

I am really satisfied with Eva Air and will definitely fly with them again.

The flight from SEA to Taipei was on a Boeing 787-10. Economy seats were unacceptably cramped and the seats themselves were old and lacking cushion. I'm only 5'3" and couldn't cross my legs as my knees were up against the seat in front of me! I could not get WiFi to work most of the time on both flights and crew were invisible except to serve meals. The onboard entertainment also did not work reliably and was very hard to hear through the provided earbuds. The Asian vegetarian meals were interesting. I hope they can provide a fully vegan option though these meals seemed to be already. I appreciate their providing these meals options for vegans. I don't think I'll fly a 787-10 if I can help it. It was the definition of a sardine can in Economy.

AAAAHHHH... It was shocking in a very positive way, the attention to detail, the courtesy, the manners of all personnel on board, the constant honest smiling. You can see and feel they take pride in all they do no matter how trivial. The plane in general was very comfortable. I can't wait to do it again

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

We were not sat together for the longeset duration of our travel very uncomfortable didnt enjoy that they fed us at 2 am

Flight attendants. Food, entertainment and most of all, be on time.

We are glad to have used China Airlines for our trip. Continue the good service! Thank you!

The flight was uneventful and the crew was kind and professional. Really appreciate the option to order a vegan meal for the flight!

I love my Delta crew, they were so welcoming and helpful.

Better organization of boarding procedures. Terrible leadership guiding people to gates.

I did not like how the plane landed. It was not smooth.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

Ask flight attendant for water during flight and she was a little rude get the water.

I purchased my two tickets on February 2025. Tickets were by each other, aisle and window. However, when we were boarded the assigned seats were one by the window and the other one in the middle of the four seated row. It was a horrible experience and we had to tolerate 17 hours of flight seating by different people. If the airline changes the seat arrangement, it should have the decency to notify the passengers in advance. I have checked my return tickets to Los Angeles, and I have noticed that they are not by each other and I don’t know what to do. I hope someone contacts me and rectify this mistake.

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

The friendliness of the attendants, and the quality of the service.

Flight attendants were awesome! Very helpful and patients. Some food were good but maybe not serving fish that kinda make the whole aircraft smell fishy. The “fried pork” was tasty but too much skin so it doesnt taste that great.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

Clean modern comfortable. Food could have been better, I only ate breakfast I wish they wouldn’t wake sleeping passengers who would rather sleep through dinner. No tea or coffee for breakfast

Food was terrible , uncomfortable seats, WiFi did not work, will never fly Singapore again.

I had ordered vegetarian food. What I was presented was extremely dissatisfying and not up to the mark. I pretty much did not eat entire 19 hours. For.an airline voted as best in business, it was extremely disappointing. Seats were not comfortable to sleep. Entertainment system didn’t have much choice. WiFi didn’t work for more than half the time. Cabin crew were also difficult to understand. A bit of diversity like Emirates crew would go a long way.

A little more room from the reclining seat in the front of me.

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.

For a 17hr economy flight it wasn’t bad at all, thankfully it wasn’t a narrow body plane.

Simplicity of boarding and corporate interactions were all totally positive and simple, brief, organized and clear. No regrets at all. I will favor flights with Cathay Pacific in the future.

Big selection and great food and beverages in business class with good service. Full recline but less privacy compared with Qatar.

Really impressed with the Airline and much with the Crew. The crew was amazingggg, changed seats very easily, provided a lot of snacks on demand, the plane is nice and clean, the menu is well presented; unfortunately, the food is not fantastic, but it's not bad either but nothing to rave about. I am still rating it as excellent because I loved everything else; food improvement will be great!

My flight was delayed by 8 hours I arrived at airport 4hrs earlier but to see if they can reroute me to get my connecting flt to Hong Kong. They auto rebooked my flt. With no chance. Which I missed this entire reservation through kayak. My next flt they got me on was at 6 am. Misses an entire day of my trip abroad all my accommodations seat assignments were missed and missed adding my TSA precheck to my ticket as well as my vegan meal request so I didnt have meals on any of the flight....so not a comfortable experience. Please help me with accommodations upon my return.

The plane was dirty, the seats were torn and broken, the service was the most terrible ever, the bathroom dirty, they will not even serve water you had to request it, the meals were terrible, overall less than Zero, I will never fly Cathay Pacific again.

Despite the crew's rough day, they were all very focused and friendly. The flight was too short for a meal, so no rating on that. Re. the AA app. It still isn't ready for prime time. AA works with Cathy Pacific for international flights to LA and the Aa jump to PHX. But the AA app can't find my trip and this can be problematic with flight delays and regatings at LAX.

Was not able to board flight because boarding pass name did not match passport name and no one caught it.

Had a bad experience with crew member coming back Hong Kong to la the person next to me one of the passenger have taken video and picture of crew member the person that served meal young kid late 20' s 6 5'10 had attitude at his peak anything I asked for I don't know if it was bad day or racial I felt humiliated as people could see difference towards me I no problem with Cathy and my whole family never had one was very disappointed

Frequently flyer number should and could have been put on at the time of booking as I gave the number when booking.

More options for your flight to Phnom Penh