What is the cheapest airline that flies from Lambert-St Louis to Chile?

American Airlines, Delta, and LATAM Airlines are the most popular carriers operating from Lambert-St Louis to Chile

What airlines fly to Chile?

Delta, LATAM Airlines and American Airlines are the top three most popular airlines that fly to Chile from St. Louis according to our data. Delta is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Chile. Keep in mind that there are 4 different airlines that fly to Chile on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Lambert-St Louis Airport to Chile?

Prices for flights from Lambert-St Louis Airport to Chile are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Chile?

As of December 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Chile.

How old do you have to be to fly from Lambert-St Louis Airport to Chile?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Chile.

What documentation or ID do you need to fly to Chile?

The travel and health documents required for your trip to Chile can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chile. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$419 Cheap Flights from St. Louis to Chile in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Chile

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 pm - 7:40 amSTL-SCL

12h 40m1 stop

10:10 pm - 8:52 amSCL-STL

12h 42m1 stop

$753LATAM Airlines

Find Deal

Wed, Mar 11 - Mon, Mar 23

7:10 am - 7:40 amSTL-SCL

22h 30m1 stop

10:10 pm - 8:52 amSCL-STL

12h 42m1 stop

$754Delta

Find Deal

Thu, Mar 12 - Thu, Mar 26

5:00 pm - 7:40 amSTL-SCL

12h 40m1 stop

10:10 pm - 11:45 amSCL-STL

15h 35m1 stop

$755Delta

Find Deal

Wed, Mar 11 - Tue, Mar 24

6:00 am - 7:50 amSTL-SCL

23h 50m1 stop

9:45 pm - 9:50 pmSCL-STL

26h 05m2 stops

$756United Airlines

Find Deal

Wed, Mar 11 - Mon, Mar 23

5:00 pm - 7:40 amSTL-SCL

12h 40m1 stop

6:40 am - 11:42 pmSCL-STL

19h 02m2 stops

$757Delta

Find Deal

Wed, Mar 11 - Wed, Mar 25

7:10 am - 6:35 amSTL-SCL

21h 25m2 stops

10:10 pm - 8:52 amSCL-STL

12h 42m1 stop

$759Delta

Find Deal

Thu, Mar 12 - Thu, Mar 26

7:10 am - 5:35 amSTL-SCL

20h 25m2 stops

8:50 am - 11:42 pmSCL-STL

16h 52m2 stops

$760Delta

Find Deal

Wed, Mar 11 - Thu, Mar 26

7:10 am - 6:35 amSTL-SCL

21h 25m2 stops

4:35 am - 11:42 pmSCL-STL

21h 07m2 stops

$763LATAM Airlines

Find Deal

Mon, Mar 9 - Mon, Mar 23

9:45 am - 5:55 amSTL-SCL

18h 10m1 stop

10:10 pm - 8:52 amSCL-STL

12h 42m1 stop

$764Delta

Find Deal

Thu, Mar 12 - Mon, Mar 23

5:00 pm - 11:25 pmSTL-SCL

28h 25m2 stops

6:40 am - 8:52 amSCL-STL

28h 12m2 stops

$765LATAM Airlines

Find Deal

Wed, Mar 11 - Tue, Mar 24

American Airlines flights from St. Louis to Chile

Our best American Airlines deals on St. Louis to Chile flight tickets

American Airlines

Mar 11

STL9:35 amLambert-St Louis

19h 15m

1 stop

SCL6:50 amSantiago Arturo Merino Benitez

Mar 23

SCL10:15 pmSantiago Arturo Merino Benitez

23h 14m

1 stop

STL7:29 pmLambert-St Louis

$779

Find similar

American Airlines

Mar 11

STL2:00 pmLambert-St Louis

17h 05m

2 stops

SCL9:05 amSantiago Arturo Merino Benitez

Mar 23

SCL9:15 pmSantiago Arturo Merino Benitez

15h 17m

1 stop

STL10:32 amLambert-St Louis

$784

Find similar

LATAM Airlines flights from St. Louis to Chile

Our best LATAM Airlines deals on St. Louis to Chile flight tickets

LATAM Airlines

Mar 11

STL5:00 pmLambert-St Louis

12h 40m

1 stop

SCL7:40 amSantiago Arturo Merino Benitez

Mar 23

SCL10:10 pmSantiago Arturo Merino Benitez

12h 42m

1 stop

STL8:52 amLambert-St Louis

$753

Find similar

LATAM Airlines

Mar 9

STL7:10 amLambert-St Louis

21h 25m

2 stops

SCL6:35 amSantiago Arturo Merino Benitez

Mar 25

SCL4:35 amSantiago Arturo Merino Benitez

21h 07m

2 stops

STL11:42 pmLambert-St Louis

$763

Find similar

LATAM Airlines

Mar 11

STL5:00 pmLambert-St Louis

28h 25m

2 stops

SCL11:25 pmSantiago Arturo Merino Benitez

Mar 24

SCL6:40 amSantiago Arturo Merino Benitez

28h 12m

2 stops

STL8:52 amLambert-St Louis

$765

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

5:00 pm-7:40 am

1 stop12h 40m

Santiago Arturo Merino Benitez

Mon 3/23

10:10 pm-8:52 am

1 stop12h 42m

$753

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Thu 3/12

7:10 am-7:40 am

1 stop22h 30m

Santiago Arturo Merino Benitez

Thu 3/26

10:10 pm-8:52 am

1 stop12h 42m

$754

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

5:00 pm-7:40 am

1 stop12h 40m

Santiago Arturo Merino Benitez

Tue 3/24

10:10 pm-11:45 am

1 stop15h 35m

$755

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

6:00 am-7:50 am

1 stop23h 50m

Santiago Arturo Merino Benitez

Mon 3/23

9:45 pm-9:50 pm

2 stops26h 05m

$756

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

5:00 pm-7:40 am

1 stop12h 40m

Santiago Arturo Merino Benitez

Wed 3/25

6:40 am-11:42 pm

2 stops19h 02m

$757

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Thu 3/12

7:10 am-6:35 am

2 stops21h 25m

Santiago Arturo Merino Benitez

Thu 3/26

10:10 pm-8:52 am

1 stop12h 42m

$759

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

7:10 am-5:35 am

2 stops20h 25m

Santiago Arturo Merino Benitez

Thu 3/26

8:50 am-11:42 pm

2 stops16h 52m

$760

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Mon 3/9

7:10 am-6:35 am

2 stops21h 25m

Santiago Arturo Merino Benitez

Mon 3/23

4:35 am-11:42 pm

2 stops21h 07m

$763

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Thu 3/12

9:45 am-5:55 am

1 stop18h 10m

Santiago Arturo Merino Benitez

Mon 3/23

10:10 pm-8:52 am

1 stop12h 42m

$764

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

5:00 pm-11:25 pm

2 stops28h 25m

Santiago Arturo Merino Benitez

Tue 3/24

6:40 am-8:52 am

2 stops28h 12m

$765

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Chile

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

Prices

Airlines

What is the cheapest month to fly to Chile?

In general, March is the cheapest month to fly from St. Louis to Chile. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $883. If you aren’t able to travel during the month of March, then book flights to Chile from St. Louis during July instead. Flights to Chile in July, while not as cheap as those in March, still average around $883.

What is the cheapest day to depart on your flight to Chile?

Our data shows that Wednesday is the least expensive day to fly to Chile. Tickets to fly out on this day can be as low as $955. On the other hand, Saturday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,189.

What is the cheapest time of day to depart on your flight to Chile?

According to our data, the cheapest time of day to fly to Chile is at noon. momondo users have found flights departing from St. Louis to Chile at noon for as low as $982. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,074 on average. Flights to Chile from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Chile?

You are more likely to see cheaper flights to Chile from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Chile for around $992 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chile from St. Louis for as low as $740 on momondo.

Cheap St. Louis to Chile flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Chile

Fastest flight time	18h 40m
Direct flights	None

The fastest flight from St. Louis to Chile takes 18h 40m

There are no direct flights from St. Louis to Chile. There are no popular flight routes from St. Louis to Chile.

Search flight deals

When did momondo last update prices for flights from Lambert-St Louis Airport to Chile?
Prices for flights from Lambert-St Louis Airport to Chile are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Chile?
As of December 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Chile.
How old do you have to be to fly from Lambert-St Louis Airport to Chile?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Chile.
What documentation or ID do you need to fly to Chile?
The travel and health documents required for your trip to Chile can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chile. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Chile

Compare and see reviews for airlines that fly from St. Louis to Chile with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $689	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
United Airlines	PriceFrom $764	Free Cancellation	Rating 7.4 9,062 reviews	Search United Airlines flights
Delta	PriceFrom $803	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights
LATAM Airlines	PriceFrom $823	Free Cancellation	Rating 7.5 1,889 reviews	Search LATAM Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Chile?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Chile. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Chile with flexible booking policies on momondo?

Yes. All flights to Chile from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Chile?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chile from St. Louis.

I’m not ready to book a flight from St. Louis to Chile right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Chile, momondo offers a useful price alert feature which will track prices for flights to Chile from St. Louis and alert you when they change.