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Cheap flights from the United States to Phnom Penh from $306

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Phnom Penh departing on 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United States to Phnom Penh

Recent round-trip flight deals from the United States to Phnom Penh

Singapore Airlines Logo
8:45 am - 8:35 amSEA-PNH
32h 50m1 stop
Singapore Airlines Logo
9:35 am - 7:10 amPNH-SEA
36h 35m1 stop
$575Singapore Airlines
Find Deal
Sun, Jan 25 - Sat, Feb 7
Singapore Airlines Logo
8:45 am - 8:35 amSEA-PNH
32h 50m1 stop
Singapore Airlines Logo
9:35 am - 7:10 amPNH-SEA
36h 35m1 stop
$578Singapore Airlines
Find Deal
Sun, Jan 25 - Sat, Feb 7
Cathay Pacific Logo
1:25 am - 5:20 pmLAX-PNH
25h 55m1 stop
Cathay Pacific Logo
6:30 pm - 10:35 pmPNH-LAX
18h 05m1 stop
$717Cathay Pacific
Find Deal
Wed, Aug 27 - Wed, Sep 3
Korean Air Logo
1:10 pm - 10:10 pmSFO-PNH
19h 00m1 stop
Korean Air Logo
11:30 pm - 10:40 amPNH-SFO
25h 10m1 stop
$731Korean Air
Find Deal
Wed, Aug 20 - Wed, Sep 3
Cathay Pacific Logo
1:25 pm - 10:15 amLAX-PNH
30h 50m1 stop
Cathay Pacific Logo
6:30 pm - 10:35 pmPNH-LAX
18h 05m1 stop
$731Cathay Pacific
Find Deal
Thu, Aug 28 - Tue, Sep 2
Korean Air Logo
1:20 pm - 10:10 pmSEA-PNH
18h 50m1 stop
Korean Air Logo
11:45 pm - 10:00 amPNH-SEA
24h 15m1 stop
$765Korean Air
Find Deal
Tue, Aug 19 - Wed, Oct 29
China Airlines Logo
12:45 am - 4:05 pmONT-PNH
25h 20m1 stop
China Airlines Logo
5:10 pm - 6:40 pmPNH-ONT
39h 30m1 stop
$865China Airlines
Find Deal
Sat, Aug 16 - Mon, Sep 8
China Airlines Logo
12:10 am - 9:50 amONT-PNH
19h 40m1 stop
China Airlines Logo
11:35 am - 4:50 pmPNH-ONT
20h 15m1 stop
$882China Airlines
Find Deal
Mon, Oct 20 - Wed, Nov 5
EVA Air Logo
1:25 am - 11:15 amJFK-PNH
22h 50m1 stop
EVA Air Logo
12:45 pm - 9:05 pmPNH-JFK
20h 20m1 stop
$1,045EVA Air
Find Deal
Sun, Aug 10 - Thu, Nov 13
EVA Air Logo
6:13 pm - 11:25 amIAD-PNH
29h 12m2 stops
EVA Air Logo
12:45 pm - 6:23 amPNH-IAD
29h 38m2 stops
$1,340EVA Air
Find Deal
Wed, Nov 5 - Fri, Nov 14

Singapore Airlines flights from United States to Phnom Penh

Our best Singapore Airlines deals on United States to Phnom Penh flight tickets
Singapore Airlines
Jan 25
SEA8:45 amSeattle/Tacoma Intl
32h 50m
1 stop
PNH8:35 amPhnom Penh Pochentong
Feb 7
PNH9:35 amPhnom Penh Pochentong
36h 35m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$575
Find similar
Singapore Airlines
Jan 25
SEA8:45 amSeattle/Tacoma Intl
32h 50m
1 stop
PNH8:35 amPhnom Penh Pochentong
Feb 7
PNH9:35 amPhnom Penh Pochentong
36h 35m
1 stop
SEA7:10 amSeattle/Tacoma Intl
$578
Find similar
Singapore Airlines
Jan 15
SFO9:40 amSan Francisco
41h 50m
1 stop
PNH6:30 pmPhnom Penh Pochentong
Jan 25
PNH7:40 pmPhnom Penh Pochentong
27h 10m
1 stop
SFO7:50 amSan Francisco
$596
Find similar

Philippine Airlines flights from United States to Phnom Penh

Our best Philippine Airlines deals on United States to Phnom Penh flight tickets
Philippine Airlines
Oct 30
SFO11:30 pmSan Francisco
34h 45m
1 stop
PNH12:15 amPhnom Penh Pochentong
Nov 8
PNH1:15 amPhnom Penh Pochentong
33h 15m
1 stop
SFO7:30 pmSan Francisco
$670
Find similar
Philippine Airlines
Oct 22
SEA11:35 pmSeattle/Tacoma Intl
34h 40m
1 stop
PNH12:15 amPhnom Penh Pochentong
Nov 11
PNH1:15 amPhnom Penh Pochentong
32h 20m
1 stop
SEA6:35 pmSeattle/Tacoma Intl
$676
Find similar
Philippine Airlines
Aug 17
LAX11:55 pmLos Angeles
34h 20m
1 stop
PNH12:15 amPhnom Penh Pochentong
Sep 9
PNH1:15 amPhnom Penh Pochentong
33h 25m
1 stop
LAX8:40 pmLos Angeles
$677
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States to Phnom Penh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from the United States to Phnom Penh that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 1/25

8:45 am-8:35 am

1 stop32h 50m

Phnom Penh Pochentong

Sat 2/7

9:35 am-7:10 am

1 stop36h 35m

$575

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Sun 1/25

8:45 am-8:35 am

1 stop32h 50m

Phnom Penh Pochentong

Sat 2/7

9:35 am-7:10 am

1 stop36h 35m

$578

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Wed 8/27

1:25 am-5:20 pm

1 stop25h 55m

Phnom Penh Pochentong

Wed 9/3

6:30 pm-10:35 pm

1 stop18h 05m

$717

San FranciscoPhnom Penh

SFO - PNH

SFOPNH

San Francisco

Wed 8/20

1:10 pm-10:10 pm

1 stop19h 00m

Phnom Penh Pochentong

Wed 9/3

11:30 pm-10:40 am

1 stop25h 10m

$731

Los AngelesPhnom Penh

LAX - PNH

LAXPNH

Los Angeles

Thu 8/28

1:25 pm-10:15 am

1 stop30h 50m

Phnom Penh Pochentong

Tue 9/2

6:30 pm-10:35 pm

1 stop18h 05m

$731

SeattlePhnom Penh

SEA - PNH

SEAPNH

Seattle/Tacoma Intl

Tue 8/19

1:20 pm-10:10 pm

1 stop18h 50m

Phnom Penh Pochentong

Wed 10/29

11:45 pm-10:00 am

1 stop24h 15m

$765

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Sat 8/16

12:45 am-4:05 pm

1 stop25h 20m

Phnom Penh Pochentong

Mon 9/8

5:10 pm-6:40 pm

1 stop39h 30m

$865

OntarioPhnom Penh

ONT - PNH

ONTPNH

Ontario

Mon 10/20

12:10 am-9:50 am

1 stop19h 40m

Phnom Penh Pochentong

Wed 11/5

11:35 am-4:50 pm

1 stop20h 15m

$882

New YorkPhnom Penh

JFK - PNH

JFKPNH

New York John F Kennedy Intl

Sun 8/10

1:25 am-11:15 am

1 stop22h 50m

Phnom Penh Pochentong

Thu 11/13

12:45 pm-9:05 pm

1 stop20h 20m

$1,045

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Wed 11/5

6:13 pm-11:25 am

2 stops29h 12m

Phnom Penh Pochentong

Fri 11/14

12:45 pm-6:23 am

2 stops29h 38m

$1,340

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Phnom Penh from

How to get the cheapest flight ticket from United States to Phnom Penh

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Phnom Penh?

In general, November is the cheapest month to fly from United States to Phnom Penh. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,055. If you aren’t able to travel to Phnom Penh during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,063.

What is the cheapest day to depart on your flight to Phnom Penh?

The cheapest day to depart from United States to Phnom Penh is on a Monday. Travelers who choose to depart for Phnom Penh on a Monday will often find tickets for as low as $1,186. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from United States to Phnom Penh for around $1,582.

What is the cheapest time of day to depart on your flight to Phnom Penh?

According to our data, the cheapest time of day to fly to Phnom Penh is in the evening. momondo users have found flights departing from United States to Phnom Penh in the evening for as low as $1,286. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Phnom Penh are more costly in the afternoon, with an average ticket price of $1,350. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Phnom Penh?

You are more likely to see cheaper flights to Phnom Penh from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Phnom Penh for around $1,240 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phnom Penh from United States for as low as $893 on momondo.

Can stopping save me money on United States to Phnom Penh flights?

You could potentially save up to 4% on your flight if you consider stops on a United States to Phnom Penh flight.

Cheap United States to Phnom Penh flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Phnom Penh

Best Price Found

$306

Fastest flight time

18h 25m

Direct flights

None

Airports in Phnom Penh

1 airport
The best one-way flight to Phnom Penh from United States in the past 72 hours is $306. The best round-trip flight deal from United States to Phnom Penh found on momondo in the last 72 hours is $575.
The fastest flight from United States to Phnom Penh takes 18h 25m
There are no direct flights from United States to Phnom Penh. Popular non-direct routes for this connection are San Francisco Airport - Phnom Penh Pochentong Airport, Dallas/Fort Worth Airport - Phnom Penh Pochentong Airport and Los Angeles Airport - Phnom Penh Pochentong Airport.
There is 1 airport near Phnom Penh: Phnom Penh Pochentong (PNH)
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  • When did momondo last update prices for flights from United States to Phnom Penh Pochentong Airport?

    Prices for flights from United States to Phnom Penh Pochentong Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from United States to Phnom Penh Pochentong Airport?

  • How old do you have to be to fly from United States to Phnom Penh Pochentong Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United States to Phnom Penh Pochentong Airport.

  • What documentation or ID do you need to fly to Phnom Penh Pochentong Airport?

    The necessary travel and health documents for your Phnom Penh Pochentong Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United States to Phnom Penh

Compare and see reviews for airlines that fly from United States to Phnom Penh with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom $563Free CancellationRating
7.6
104 reviews
Search China Southern flights
Singapore AirlinesPriceFrom $604Free CancellationRating
8.1
1,338 reviews
Search Singapore Airlines flights
Air ChinaPriceFrom $644Free CancellationRating
7.3
93 reviews
Search Air China flights
China EasternPriceFrom $660Free CancellationRating
7.2
158 reviews
Search China Eastern flights
Philippine AirlinesPriceFrom $661Free CancellationRating
7.2
894 reviews
Search Philippine Airlines flights
Asiana AirlinesPriceFrom $694Free CancellationRating
8.2
468 reviews
Search Asiana Airlines flights
Cathay PacificPriceFrom $707Free CancellationRating
7.6
949 reviews
Search Cathay Pacific flights
Korean AirPriceFrom $732Free CancellationRating
8.4
1,121 reviews
Search Korean Air flights
Vietnam AirlinesPriceFrom $736Free CancellationRating
7.5
197 reviews
Search Vietnam Airlines flights
China AirlinesPriceFrom $823Free CancellationRating
8.3
754 reviews
Search China Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from United States to Phnom Penh?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to Phnom Penh. momondo saves you time and could save you money on your trip.

Can I find flights from United States to Phnom Penh with flexible booking policies on momondo?

All flight searches from United States to Phnom Penh on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from United States to Phnom Penh?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United States to Phnom Penh.

I’m not ready to book a flight from United States to Phnom Penh right now. Can momondo alert me if prices change?

Price alerts on flights to Phnom Penh from United States are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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