Cheap Flights from St Louis to Phnom Penh
No deal from St Louis to Phnom Penh has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from St Louis to Phnom Penh, the lowest round-trip fare we recorded was $1218, in October. The typical fare was $3187. October was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $1394 on American and Cathay Pacific, seen Oct 27. It is an unverified observation and may have changed.
See every deal <a href="/from/st-louis">from St Louis</a>, <a href="/to/phnom-penh">to Phnom Penh</a>, or the return direction <a href="/from/phnom-penh/to/st-louis">Phnom Penh to St Louis</a>.
Latest price we saw: St Louis to Phnom Penh
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| St Louis (STL) to Phnom Penh (KTI) | $1394 | 7.9¢ | Oct 29 – Nov 4 | American and Cathay Pacific | Oct 27 | Check price |
Price history: St Louis to Phnom Penh
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $1218 | $1920 | 30 |
| Sep 2026 | $1269 | $1771 | 36 |
| Aug 2026 | $1449 | $4183 | 36 |
| Jul 2026 | $4873 | $4873 | 1 |
Frequently asked questions
How many flight deals from St Louis to Phnom Penh are on Sparkflights right now?
There are 0 verified deals from St Louis to Phnom Penh on the board right now. The list refreshes hourly.
What is the lowest price ever seen from St Louis to Phnom Penh?
The lowest fare we've recorded from St Louis to Phnom Penh is $1218, based on 103 price observations over 4 months.
How much does a flight from St Louis to Phnom Penh cost?
The typical round-trip fare we observed from St Louis to Phnom Penh is $3187, against a recorded low of $1218. These are observations, not quotes.
When is the cheapest month to fly St Louis to Phnom Penh?
October was the cheapest month we observed from St Louis to Phnom Penh and July the dearest, over 4 months of data.
What is the current price from St Louis to Phnom Penh?
The most recent fare our sweep saw from St Louis to Phnom Penh is $1394, on Oct 27. It is an unverified observation rather than a verified deal, so check it before booking.