Cheap Flights from St Louis to Phnom Penh from 1.437 € Return

Flight deals from St Louis to Phnom Penh

Looking for cheap tickets from St Louis to Phnom Penh, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Phnom Penh.1.437 € per passenger.Departing Thu, 2 Jul, returning Thu, 23 Jul.Return flight with Alaska Airlines and AirAsia Cambodia.Outbound indirect flight with Alaska Airlines, departs from St Louis on Thu, 2 Jul, arriving in Techo International.Inbound indirect flight with AirAsia Cambodia, departs from Techo International on Thu, 23 Jul, arriving in St Louis.Price includes taxes and charges.From 1.437 €, select.

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Flying from St Louis to Phnom Penh

Arm yourself with these facts on the fly.

Cheapest flight found	1.437 €
Cheapest month to fly	July
Cheapest airport to fly from	St Louis

How to find cheap flights from St Louis to Phnom Penh

Ready to join the other savvy travellers booking the cheapest one-way and return flights to Phnom Penh? Here are a few tips to help you do it the smart way.

Fly from St Louis into Techo International

At the moment, the lowest priced flight tickets to Phnom Penh are from St Louis Airport to Techo International Airport.

Fly in July

We crunched the flight calendar and found the cheapest time to fly from St Louis to Phnom Penh is currently July.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from St Louis to anywhere you choose in Phnom Penh.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from St Louis to Phnom Penh go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the Phnom Penh to Phnom Penh flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average St Louis to Phnom Penh flight price?

We looked at all of the upcoming return flights from St Louis to Phnom Penh we could find over the next 12 months. It looks like 1.437 € is the best price. This is good, compared to the average Phnom Penh ticket price of 1.437 €.

What is the cheapest month to fly from St Louis to Phnom Penh?

The cheapest month to fly from St Louis to Phnom Penh is currently July.

Which upcoming date is cheapest to fly from St Louis to Phnom Penh on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from St Louis to Phnom Penh on Thursday, 2 July 2026.

Are there any direct flights from St Louis to Phnom Penh?

Currently, there aren't any direct flights from St Louis to Phnom Penh, but you can still fly with a stopover.

If I'm flying from St Louis, where in Phnom Penh is cheapest to fly into?

If you're flying from St Louis, the cheapest city in Phnom Penh to fly into is Phnom Penh. The cheapest airport serving Phnom Penh at the moment is Techo International.