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Cheap flights from the United States to Phnom Penh from $735

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 10/23. 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

Etihad Airways Logo
4:30 pm - 6:55 amBOS-PNH
27h 25m1 stop
Etihad Airways Logo
7:55 am - 2:10 pmPNH-BOS
42h 15m1 stop
$1,154Etihad Airways
Find Deal
Sat, Oct 4 - Fri, Nov 7
Etihad Airways Logo
3:40 pm - 6:30 amBOS-PNH
26h 50m1 stop
Etihad Airways Logo
7:50 pm - 2:10 pmPNH-BOS
30h 20m1 stop
$1,163Etihad Airways
Find Deal
Sat, Jan 31 - Sat, Feb 21
Etihad Airways Logo
4:30 pm - 6:55 amBOS-PNH
27h 25m1 stop
Etihad Airways Logo
7:50 pm - 2:10 pmPNH-BOS
30h 20m1 stop
$1,179Etihad Airways
Find Deal
Sun, Oct 5 - Thu, Nov 6
Etihad Airways Logo
4:30 pm - 6:55 amBOS-PNH
27h 25m1 stop
Etihad Airways Logo
7:50 pm - 2:10 pmPNH-BOS
30h 20m1 stop
$1,180Etihad Airways
Find Deal
Sat, Oct 4 - Thu, Feb 5
Etihad Airways Logo
10:05 pm - 6:30 amIAD-PNH
21h 25m1 stop
Etihad Airways Logo
7:55 am - 3:50 pmPNH-IAD
43h 55m1 stop
$1,199Etihad Airways
Find Deal
Sat, Oct 25 - Tue, Nov 4
Etihad Airways Logo
4:30 pm - 6:55 amBOS-PNH
27h 25m1 stop
Etihad Airways Logo
7:50 pm - 2:10 pmPNH-BOS
30h 20m1 stop
$1,204Etihad Airways
Find Deal
Tue, Oct 7 - Thu, Feb 5
Etihad Airways Logo
4:30 pm - 6:55 amBOS-PNH
27h 25m1 stop
Etihad Airways Logo
7:55 am - 3:10 pmPNH-BOS
42h 15m1 stop
$1,226Etihad Airways
Find Deal
Tue, Oct 14 - Tue, Oct 28
Etihad Airways Logo
5:05 pm - 6:55 amBOS-PNH
50h 50m2 stops
Etihad Airways Logo
7:50 pm - 2:10 pmPNH-BOS
30h 20m1 stop
$1,228Etihad Airways
Find Deal
Wed, Oct 8 - Thu, Feb 5
Multiple Airlines Logo
1:55 pm - 6:55 amORD-PNH
29h 00m1 stop
Multiple Airlines Logo
1:55 pm - 11:10 amPNH-ORD
33h 15m3 stops
$1,615Multiple Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Multiple Airlines Logo
1:07 am - 6:30 amSFO-PNH
39h 23m2 stops
Multiple Airlines Logo
8:30 pm - 2:31 pmPNH-SFO
32h 01m2 stops
$1,653Multiple Airlines
Find Deal
Tue, Mar 10 - Tue, Apr 7

Etihad Airways flights from United States to Phnom Penh

Our best Etihad Airways deals on United States to Phnom Penh flight tickets
Etihad Airways
Oct 4
BOS4:30 pmBoston Logan Intl
27h 25m
1 stop
PNH6:55 amPhnom Penh Pochentong
Nov 7
PNH7:55 amPhnom Penh Pochentong
42h 15m
1 stop
BOS2:10 pmBoston Logan Intl
$1,154
Find similar
Etihad Airways
Jan 31
BOS3:40 pmBoston Logan Intl
26h 50m
1 stop
PNH6:30 amPhnom Penh Pochentong
Feb 21
PNH7:50 pmPhnom Penh Pochentong
30h 20m
1 stop
BOS2:10 pmBoston Logan Intl
$1,163
Find similar
Etihad Airways
Oct 5
BOS4:30 pmBoston Logan Intl
27h 25m
1 stop
PNH6:55 amPhnom Penh Pochentong
Nov 6
PNH7:50 pmPhnom Penh Pochentong
30h 20m
1 stop
BOS2:10 pmBoston Logan Intl
$1,179
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 September 16, 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

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sat 10/4

4:30 pm-6:55 am

1 stop27h 25m

Phnom Penh Pochentong

Fri 11/7

7:55 am-2:10 pm

1 stop42h 15m

$1,154

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sat 1/31

3:40 pm-6:30 am

1 stop26h 50m

Phnom Penh Pochentong

Sat 2/21

7:50 pm-2:10 pm

1 stop30h 20m

$1,163

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sun 10/5

4:30 pm-6:55 am

1 stop27h 25m

Phnom Penh Pochentong

Thu 11/6

7:50 pm-2:10 pm

1 stop30h 20m

$1,179

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Sat 10/4

4:30 pm-6:55 am

1 stop27h 25m

Phnom Penh Pochentong

Thu 2/5

7:50 pm-2:10 pm

1 stop30h 20m

$1,180

Washington, D.C.Phnom Penh

IAD - PNH

IADPNH

Washington, D.C. Dulles Intl

Sat 10/25

10:05 pm-6:30 am

1 stop21h 25m

Phnom Penh Pochentong

Tue 11/4

7:55 am-3:50 pm

1 stop43h 55m

$1,199

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 10/7

4:30 pm-6:55 am

1 stop27h 25m

Phnom Penh Pochentong

Thu 2/5

7:50 pm-2:10 pm

1 stop30h 20m

$1,204

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Tue 10/14

4:30 pm-6:55 am

1 stop27h 25m

Phnom Penh Pochentong

Tue 10/28

7:55 am-3:10 pm

1 stop42h 15m

$1,226

BostonPhnom Penh

BOS - PNH

BOSPNH

Boston Logan Intl

Wed 10/8

5:05 pm-6:55 am

2 stops50h 50m

Phnom Penh Pochentong

Thu 2/5

7:50 pm-2:10 pm

1 stop30h 20m

$1,228

ChicagoPhnom Penh

ORD - PNH

ORDPNH

Chicago O'Hare Intl

Tue 10/14

1:55 pm-6:55 am

1 stop29h 00m

Phnom Penh Pochentong

Tue 10/21

1:55 pm-11:10 am

3 stops33h 15m

$1,615

San FranciscoPhnom Penh

SFO - PNH

SFOPNH

San Francisco

Tue 3/10

1:07 am-6:30 am

2 stops39h 23m

Phnom Penh Pochentong

Tue 4/7

8:30 pm-2:31 pm

2 stops32h 01m

$1,653

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 $1,053. 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 $1,235 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 $903 on momondo.

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

You could potentially save up to 13% 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

Direct flights

None
There are no direct flights from United States to Phnom Penh. There are no popular flight routes from United States to Phnom Penh.
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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 $560Free CancellationRating
7.5
110 reviews
Search China Southern flights
Singapore AirlinesPriceFrom $575Free CancellationRating
8.1
1,365 reviews
Search Singapore Airlines flights
Air ChinaPriceFrom $644Free CancellationRating
7.3
101 reviews
Search Air China flights
China EasternPriceFrom $658Free CancellationRating
7.2
166 reviews
Search China Eastern flights
Philippine AirlinesPriceFrom $661Free CancellationRating
7.2
911 reviews
Search Philippine Airlines flights
Cathay PacificPriceFrom $683Free CancellationRating
7.6
993 reviews
Search Cathay Pacific flights
Asiana AirlinesPriceFrom $694Free CancellationRating
8.2
480 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $732Free CancellationRating
8.4
1,140 reviews
Search Korean Air flights
Vietnam AirlinesPriceFrom $736Free CancellationRating
7.6
201 reviews
Search Vietnam Airlines flights
China AirlinesPriceFrom $770Free CancellationRating
8.3
767 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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