What airlines fly to Santiago?

Delta, American Airlines and LATAM Airlines are the top three most popular airlines that fly to Santiago from St. Louis according to our data. Delta is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Santiago. Keep in mind that there are 3 different airlines that fly to Santiago on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from St. Louis to Santiago?

Flights connecting via Miami (MIA) have the shortest average one-way travel time: 12h 45m.

Which layover airport offers the lowest fares from St. Louis to Santiago?

Flights via Miami (MIA) offer the lowest average round-trip price of $898.

Which layover airport has the shortest connection time from St. Louis to Santiago?

Atlanta (ATL) has the shortest average layover time for this route: 2h 05m.

What is the cheapest airline that flies from Lambert-St Louis to Santiago Arturo Merino Benitez?

American Airlines is the most popular carrier operating from Lambert-St Louis to Santiago Arturo Merino Benitez

Which airport is the most popular layover for flights between St. Louis and Santiago?

Atlanta (ATL) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?

Prices for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?

As of June 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport.

What documentation or ID do you need to fly to Santiago Arturo Merino Benitez Airport?

The required travel and health documents for your Santiago Arturo Merino Benitez Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Santiago Arturo Merino Benitez Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$479 Cheap Flights from St. Louis to Santiago in 2026

Q: What is the typical price of a round-trip flight between St. Louis and Santiago?

Prices are currently low for flights on this route. Typical prices usually range from $1,198 to $1,500. The lowest price recently found on this route was $947.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Santiago

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:35 am - 6:25 am

STL

SCL

17h 50m

1 stop

9:50 pm - 10:45 am

SCL

STL

14h 55m

1 stop

$947American Airlines

Tue, Sep 1 - Sun, Sep 6

12:45 pm - 6:25 am

STL

SCL

16h 40m

2 stops

9:50 pm - 10:45 am

SCL

STL

14h 55m

1 stop

$952American Airlines

Tue, Sep 1 - Sun, Sep 6

6:00 am - 10:49 am

STL

SCL

27h 49m

3 stops

4:30 pm - 11:42 pm

SCL

STL

33h 12m

2 stops

$957LATAM Airlines

Wed, Sep 2 - Mon, Sep 7

12:52 pm - 1:25 pm

STL

SCL

23h 33m

3 stops

11:05 pm - 9:34 am

SCL

STL

36h 29m

2 stops

$962LATAM Airlines

Tue, Sep 1 - Sun, Sep 6

12:52 pm - 1:25 pm

STL

SCL

23h 33m

3 stops

11:05 pm - 9:34 am

SCL

STL

36h 29m

2 stops

$972LATAM Airlines

Tue, Sep 1 - Sun, Sep 6

6:00 am - 7:40 am

STL

SCL

22h 40m

1 stop

12:55 am - 5:06 pm

SCL

STL

19h 11m

1 stop

$978LATAM Airlines

Tue, Dec 1 - Mon, Dec 14

10:51 am - 7:15 am

STL

SCL

19h 24m

1 stop

11:05 pm - 5:53 pm

SCL

STL

19h 48m

2 stops

$983LATAM Airlines

Mon, Jul 13 - Sun, Jul 19

1:22 pm - 7:15 am

STL

SCL

16h 53m

1 stop

8:40 pm - 12:17 pm

SCL

STL

16h 37m

1 stop

$987Delta

Mon, Jul 13 - Sun, Jul 19

1:22 pm - 1:25 pm

STL

SCL

23h 03m

3 stops

8:40 pm - 9:43 am

SCL

STL

14h 03m

1 stop

$988LATAM Airlines

Tue, Jul 14 - Tue, Jul 21

6:58 pm - 9:45 pm

STL

SCL

25h 47m

3 stops

11:05 pm - 5:53 pm

SCL

STL

19h 48m

2 stops

$993LATAM Airlines

Mon, Jul 13 - Sun, Jul 19

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LATAM Airlines flights from St. Louis to Santiago

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

LATAM Airlines

Sep 2

STL6:00 amLambert-St Louis

27h 49m

3 stops

SCL10:49 amSantiago Arturo Merino Benitez

Sep 7

SCL4:30 pmSantiago Arturo Merino Benitez

33h 12m

2 stops

STL11:42 pmLambert-St Louis

$957

LATAM Airlines

Sep 1

STL12:52 pmLambert-St Louis

23h 33m

3 stops

SCL1:25 pmSantiago Arturo Merino Benitez

Sep 6

SCL9:30 pmSantiago Arturo Merino Benitez

28h 28m

2 stops

STL11:58 pmLambert-St Louis

$962

LATAM Airlines

Dec 1

STL6:00 amLambert-St Louis

22h 40m

1 stop

SCL7:40 amSantiago Arturo Merino Benitez

Dec 14

SCL12:55 amSantiago Arturo Merino Benitez

19h 11m

1 stop

STL5:06 pmLambert-St Louis

$978

United Airlines flights from St. Louis to Santiago

Our best United Airlines deals on St. Louis to Santiago flight tickets

United Airlines

Nov 8

STL1:08 pmLambert-St Louis

16h 42m

2 stops

SCL8:50 amSantiago Arturo Merino Benitez

Nov 11

SCL10:45 pmSantiago Arturo Merino Benitez

14h 20m

1 stop

STL10:05 amLambert-St Louis

$1,161

United Airlines

Nov 8

STL10:23 amLambert-St Louis

19h 27m

2 stops

SCL8:50 amSantiago Arturo Merino Benitez

Nov 11

SCL10:45 pmSantiago Arturo Merino Benitez

19h 53m

2 stops

STL3:38 pmLambert-St Louis

$1,166

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 9/1

11:35 am-6:25 am

1 stop17h 50m

Santiago Arturo Merino Benitez

Sun 9/6

9:50 pm-10:45 am

1 stop14h 55m

$947

Quickest round-trip

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 9/1

12:45 pm-6:25 am

2 stops16h 40m

Santiago Arturo Merino Benitez

Sun 9/6

9:50 pm-10:45 am

1 stop14h 55m

$952

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 9/2

6:00 am-10:49 am

3 stops27h 49m

Santiago Arturo Merino Benitez

Mon 9/7

4:30 pm-11:42 pm

2 stops33h 12m

$957

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 9/1

12:52 pm-1:25 pm

3 stops23h 33m

Santiago Arturo Merino Benitez

Sun 9/6

11:05 pm-9:34 am

2 stops36h 29m

$962

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 9/1

12:52 pm-1:25 pm

3 stops23h 33m

Santiago Arturo Merino Benitez

Sun 9/6

11:05 pm-9:34 am

2 stops36h 29m

$972

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 12/1

6:00 am-7:40 am

1 stop22h 40m

Santiago Arturo Merino Benitez

Mon 12/14

12:55 am-5:06 pm

1 stop19h 11m

$978

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Mon 7/13

10:51 am-7:15 am

1 stop19h 24m

Santiago Arturo Merino Benitez

Sun 7/19

11:05 pm-5:53 pm

2 stops19h 48m

$983

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Mon 7/13

1:22 pm-7:15 am

1 stop16h 53m

Santiago Arturo Merino Benitez

Sun 7/19

8:40 pm-12:17 pm

1 stop16h 37m

$987

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Tue 7/14

1:22 pm-1:25 pm

3 stops23h 03m

Santiago Arturo Merino Benitez

Tue 7/21

8:40 pm-9:43 am

1 stop14h 03m

$988

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Mon 7/13

6:58 pm-9:45 pm

3 stops25h 47m

Santiago Arturo Merino Benitez

Sun 7/19

11:05 pm-5:53 pm

2 stops19h 48m

$993

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Layovers

What is the typical price of a round-trip flight between St. Louis and Santiago?

What is the cheapest month to fly to Santiago?

In general, July is the cheapest month to fly from St. Louis to Santiago. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $811. If you don’t want to visit Santiago in July, then you should wait until March to fly from St. Louis, when ticket prices are also cheap, with an average price of $823.

When to book flights from St. Louis to Santiago

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Santiago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Santiago (STL to SCL) flight deals and tips

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

Fastest flight time	16h 42m
Direct flights	None

The fastest flight from St. Louis to Santiago takes 16h 42m

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

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Frequently asked questions about flying from St. Louis to Santiago

How far is Lambert-St Louis to Santiago Arturo Merino Benitez by plane?
The distance between Lambert-St Louis and Santiago Arturo Merino Benitez is about 5131.6 mi. Typically, this will take 16h 42m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?
Prices for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?
As of June 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Santiago Arturo Merino Benitez Airport.
What documentation or ID do you need to fly to Santiago Arturo Merino Benitez Airport?
The required travel and health documents for your Santiago Arturo Merino Benitez Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Santiago Arturo Merino Benitez Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from St. Louis to Santiago?
Based on momondo bookings for flights between St. Louis and Santiago, the leading airline is Delta, making up 43% of the total bookings. Other popular airlines include American Airlines with 31% and LATAM Airlines with 26%.

Best airlines flying from St. Louis to Santiago

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.1 11,716 reviews	Search American Airlines flights
Delta	PriceFrom $611	Free Cancellation	Rating 7.8 8,420 reviews	Search Delta flights
LATAM Airlines	PriceFrom $792	Free Cancellation	Rating 7.4 1,939 reviews	Search LATAM Airlines flights

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Santa Cruz

Valle Nevado

San Fernando

Pichilemu

Zapallar

Why use momondo?

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

Finding the right flight to Santiago from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Santiago quick and easy, saving you time and money.

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

Flights from St. Louis to Santiago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Santiago from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from St. Louis to Santiago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santiago and let you know when they change.