$691 Cheap Flights from St. Louis (STL) to Puerto Montt (PMC)

View $691 flight on Sun, Apr 19, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Puerto Montt (PMC-Tepual)

Cheap Flights from St. Louis to Puerto Montt (STL-PMC)

Prices were available within the past 7 days and start at $691 for one-way flights and $1,421 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,421 Roundtrip, found 4 days ago
$1,421
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,421 found 4 days ago
American Airlines
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,435 Roundtrip, found 4 days ago
$1,435
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,435 found 4 days ago
Delta
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,459 Roundtrip, found 4 days ago
$1,459
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,459 found 4 days ago
Delta
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,474 Roundtrip, found 4 days ago
$1,474
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,474 found 4 days ago
American Airlines
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,479 Roundtrip, found 4 days ago
$1,479
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,479 found 4 days ago
Delta
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,480 Roundtrip, found 4 days ago
$1,480
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,480 found 4 days ago
Delta
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,521 Roundtrip, found 4 days ago
$1,521
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,521 found 4 days ago
LATAM Airlines Group
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,521 Roundtrip, found 4 days ago
$1,521
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,521 found 4 days ago
Delta
Sun, Apr 19 - Fri, Apr 24
STL
St. Louis
PMC
Puerto Montt
$1,550 Roundtrip, found 4 days ago
$1,550
Roundtrip
found 4 days ago
Select Delta flight, departing Sun, Apr 19 from St. Louis to Puerto Montt, returning Fri, Apr 24, priced at $1,550 found 4 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC) cost?
Get a cheap one-way flight from $691 or cheap return flight from $1,421 from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC)?
Planning your getaway for April is a good way to save, as it's the cheapest month for flights between STL and PMC. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STL to PMC flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to PMC?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC)?
To touch down at Tepual Airport (PMC) without delays, opt for a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC) last-minute?
Last-minute bookings from STL to PMC are typically more expensive. To lock in the cheapest rates, start searching for flights as early as possible. That being said, if you're flexible with your travel plans, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a STL to PMC flight and hotel package?
You'll generally save money by securing a STL to PMC flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After choosing your ideal flights and accommodations, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Tepual Airport (PMC)?
If you reserved your STL to PMC flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Tepual
Roundtrip price
$1,420
Distance
5645 mi

Book with confidence

St. Louis to Puerto Montt Flights

The cheapest times to fly from St. Louis to Puerto Montt

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Puerto Montt are during the month of April. You can find some of the cheapest flights from St. Louis to Puerto Montt with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Puerto Montt

Sunday is one of the best days to book for cheap flights from St. Louis to Puerto Montt: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Puerto Montt

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Puerto Montt in 2025. You can also book with separate airlines for your outbound and return journeys, from $691 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Puerto Montt flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Puerto Montt airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Puerto Montt Flights

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*Available to One Key members.