Cheap flights from St. Louis to Phnom Penh from $825

Trusted by millions

Kiwi.com Guarantee for stress-free travel

One search, all the best deals

Explore flight deals to Phnom Penh

3 stops
Tue, Jun 24
St. Louis STLPhnom Penh PNH

$825
Search
3 stops
Mon, Jun 23
St. Louis STLPhnom Penh PNH

$862
Search
3 stops
Tue, Jun 24
St. Louis STLPhnom Penh PNH

$937
Search
3 stops
Tue, Jun 24
St. Louis STLPhnom Penh PNH

$937
Search
3 stops
Tue, Jun 24
St. Louis STLPhnom Penh PNH

$952
Search
3 stops
Sun, Jun 22
St. Louis STLPhnom Penh PNH

$995
Search

Prices updated:

Not happy with the results? Try some of our useful filters

2 stops
Sun, Jun 22 – Sat, Jun 28
St. Louis STLPhnom Penh PNH

$1,710
Search
2 stops
Sun, Jun 22 – Sat, Jun 28
St. Louis STLPhnom Penh PNH

$1,755
Search
2 stops
Sat, Jun 21 – Sat, Jun 28
St. Louis STLPhnom Penh PNH

$1,870
Search
2 stops
Sun, Jun 22 – Fri, Jun 27
St. Louis STLPhnom Penh PNH

$1,882
Search
2 stops
Sun, Jun 22 – Fri, Jun 27
St. Louis STLPhnom Penh PNH

$1,882
Search
2 stops
Sat, Jun 21 – Fri, Jun 27
St. Louis STLPhnom Penh PNH

$2,069
Search

Prices updated:

Not happy with the results? Try some of our useful filters

How much do flights to Phnom Penh cost?

Key info about flying to Phnom Penh

Depart from
St. Louis Lambert International
Arrive to
Phnom Penh International
Average flights per week
400
Flight distance
Worth visiting
Killing Fields, Phnom Penh - Cu Chi Tunnels

Check-in for a flight from St. Louis to Phnom Penh

NameCarrier codeIATA CodePassport needed during booking
Air CanadaACAACYes
Hawaiian AirlinesHALHANo
EVA AirEVABRYes
Cathay PacificCPACXNo
Korean AirKALKEYes

Weather in Phnom Penh

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January32°C22°C
February34°C23°C
March36°C25°C
April35°C26°C
May34°C26°C
June33°C25°C
July32°C25°C
August32°C25°C
September31°C25°C
October31°C24°C
November31°C23°C
December30°C22°C
Hottest Month
36°C
March
Coldest month
22°C
January
Sunny days
195
days per year

14 day forecast

Saturday
24 May
90%
34°C26°C
31 May
88%
31°C25°C
Sunday
25 May
89%
35°C26°C
1 Jun
33°C25°C
Monday
26 May
86%
32°C26°C
2 Jun
32°C27°C
Tuesday
27 May
89%
34°C25°C
3 Jun
36°C27°C
Wednesday
28 May
88%
30°C25°C
4 Jun
88%
34°C27°C
Thursday
29 May
87%
34°C25°C
5 Jun
66%
30°C26°C
Friday
30 May
87%
29°C25°C
6 Jun
89%
29°C24°C
The most popular airlines for this route are Air Canada, Hawaiian Airlines, EVA Air, Cathay Pacific, and Korean Air. St. Louis and Phnom Penh have 400 direct flights per week. When you arrive at Phnom Penh, consider visiting Killing Fields, Phnom Penh, and Cu Chi Tunnels.

Frequently asked questions

What are the most popular routes to and from St. Louis?
What are the most popular routes to and from Phnom Penh?
What airports are near St. Louis?
What airports are near Phnom Penh?
Which airlines fly between St. Louis and Phnom Penh?
When’s the best time to travel between St. Louis and Phnom Penh?
What flights operate between St. Louis and Phnom Penh?
How many airports are there near St. Louis?
How many airports are there near Phnom Penh?
What time do nonstop (direct) flights between St. Louis and Phnom Penh depart?
What time do nonstop (direct) flights between St. Louis and Phnom Penh arrive?
What time do flights between St. Louis and Phnom Penh depart?
What time do flights between St. Louis and Phnom Penh arrive?

Explore alternative trips

Flights from St. Louis

Flights to Phnom Penh

Popular routes

The nearest countries with flights to Phnom Penh

Here is a list of countries people are flying from

Other destination countries from St. Louis

Here is a list of countries people are flying to
Find the best connection from St. Louis to Phnom Penh
Search flights

Get more out of Kiwi.com with our mobile application

Download boarding passes

One-click booking

Get exclusive offers and prices

Mobile trip notifications


We hack the system,
you fly for less