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

United Airlines, Delta, and LATAM Airlines are the most popular carriers 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: 86% of momondo users choosing 1-stop flights on this route connected there.

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

Miami (MIA) has the shortest average layover time for this route: 2h 21m.

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.

What airlines fly to Santiago?

Delta, LATAM Airlines and American 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 39% 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.

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 February 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.

$413 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 $1,058 to $1,183. The lowest price recently found on this route was $830.

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Find the cheapest flights from St. Louis to Santiago

Round-trip

One-way

Cheap round-trip flights

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6:00 am - 5:35 am

STL

SCL

21h 35m

2 stops

4:35 am - 11:58 pm

SCL

STL

21h 23m

2 stops

$830LATAM Airlines

Wed, Mar 11 - Mon, Mar 23

6:00 am - 7:50 am

STL

SCL

23h 50m

1 stop

9:45 pm - 6:00 pm

SCL

STL

22h 15m

2 stops

$851United Airlines

Wed, Mar 11 - Mon, Mar 23

4:47 pm - 7:50 am

STL

SCL

13h 03m

1 stop

9:45 pm - 9:21 am

SCL

STL

13h 36m

1 stop

$853United Airlines

Wed, Mar 11 - Mon, Mar 23

6:00 am - 7:50 am

STL

SCL

23h 50m

1 stop

9:45 pm - 10:59 pm

SCL

STL

27h 14m

2 stops

$855United Airlines

Wed, Mar 11 - Mon, Mar 23

10:12 am - 7:40 am

STL

SCL

19h 28m

1 stop

6:30 pm - 11:09 am

SCL

STL

18h 39m

2 stops

$858Delta

Wed, Mar 11 - Mon, Mar 23

7:00 am - 7:00 am

STL

SCL

22h 00m

1 stop

9:20 pm - 10:32 am

SCL

STL

15h 12m

1 stop

$860American Airlines

Wed, Mar 11 - Mon, Mar 23

6:00 am - 5:35 am

STL

SCL

21h 35m

2 stops

11:25 pm - 5:53 pm

SCL

STL

20h 28m

2 stops

$863Delta

Wed, Mar 11 - Mon, Mar 23

5:15 am - 9:05 am

STL

SCL

25h 50m

1 stop

9:20 pm - 11:58 pm

SCL

STL

28h 38m

1 stop

$864American Airlines

Wed, Mar 11 - Mon, Mar 23

1:27 pm - 6:55 am

STL

SCL

16h 28m

2 stops

11:05 pm - 6:02 pm

SCL

STL

19h 57m

2 stops

$882LATAM Airlines

Thu, May 21 - Sat, May 30

12:04 pm - 7:40 am

STL

SCL

17h 36m

1 stop

11:00 pm - 5:53 pm

SCL

STL

20h 53m

2 stops

$893LATAM Airlines

Fri, Mar 20 - Mon, Mar 30

Delta flights from St. Louis to Santiago

Our best Delta deals on St. Louis to Santiago flight tickets

Delta

Mar 11

STL10:12 amLambert-St Louis

19h 28m

1 stop

SCL7:40 amSantiago Arturo Merino Benitez

Mar 23

SCL6:30 pmSantiago Arturo Merino Benitez

18h 39m

2 stops

STL11:09 amLambert-St Louis

$858

Delta

Mar 11

STL6:00 amLambert-St Louis

21h 35m

2 stops

SCL5:35 amSantiago Arturo Merino Benitez

Mar 23

SCL11:25 pmSantiago Arturo Merino Benitez

20h 28m

2 stops

STL5:53 pmLambert-St Louis

$863

Delta

Mar 28

STL10:07 amLambert-St Louis

20h 08m

1 stop

SCL8:15 amSantiago Arturo Merino Benitez

Apr 4

SCL11:00 pmSantiago Arturo Merino Benitez

24h 06m

2 stops

STL9:06 pmLambert-St Louis

$943

American Airlines flights from St. Louis to Santiago

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

American Airlines

Mar 11

STL7:00 amLambert-St Louis

22h 00m

1 stop

SCL7:00 amSantiago Arturo Merino Benitez

Mar 23

SCL9:20 pmSantiago Arturo Merino Benitez

15h 12m

1 stop

STL10:32 amLambert-St Louis

$860

American Airlines

Mar 11

STL5:15 amLambert-St Louis

25h 50m

1 stop

SCL9:05 amSantiago Arturo Merino Benitez

Mar 23

SCL9:20 pmSantiago Arturo Merino Benitez

28h 38m

1 stop

STL11:58 pmLambert-St Louis

$864

American Airlines

Mar 28

STL5:15 amLambert-St Louis

24h 45m

1 stop

SCL8:00 amSantiago Arturo Merino Benitez

Apr 4

SCL9:25 pmSantiago Arturo Merino Benitez

15h 07m

1 stop

STL10:32 amLambert-St Louis

$950

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

6:00 am-5:35 am

2 stops21h 35m

Santiago Arturo Merino Benitez

Mon 3/23

4:35 am-11:58 pm

2 stops21h 23m

$830

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-6:00 pm

2 stops22h 15m

$851

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

4:47 pm-7:50 am

1 stop13h 03m

Santiago Arturo Merino Benitez

Mon 3/23

9:45 pm-9:21 am

1 stop13h 36m

$853

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-10:59 pm

2 stops27h 14m

$855

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

10:12 am-7:40 am

1 stop19h 28m

Santiago Arturo Merino Benitez

Mon 3/23

6:30 pm-11:09 am

2 stops18h 39m

$858

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

7:00 am-7:00 am

1 stop22h 00m

Santiago Arturo Merino Benitez

Mon 3/23

9:20 pm-10:32 am

1 stop15h 12m

$860

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

6:00 am-5:35 am

2 stops21h 35m

Santiago Arturo Merino Benitez

Mon 3/23

11:25 pm-5:53 pm

2 stops20h 28m

$863

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Wed 3/11

5:15 am-9:05 am

1 stop25h 50m

Santiago Arturo Merino Benitez

Mon 3/23

9:20 pm-11:58 pm

1 stop28h 38m

$864

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Thu 5/21

1:27 pm-6:55 am

2 stops16h 28m

Santiago Arturo Merino Benitez

Sat 5/30

11:05 pm-6:02 pm

2 stops19h 57m

$882

St. LouisSantiago

STL - SCL

STLSCL

Lambert-St Louis

Fri 3/20

12:04 pm-7:40 am

1 stop17h 36m

Santiago Arturo Merino Benitez

Mon 3/30

11:00 pm-5:53 pm

2 stops20h 53m

$893

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 $883. If you don’t want to visit Santiago in July, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $903.

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	19h 35m
Direct flights	None

The fastest flight from St. Louis to Santiago takes 19h 35m

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

Search flight deals

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 19h 35m 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 February 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 39% of the total bookings. Other popular airlines include LATAM Airlines with 31% and American Airlines with 29%.

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 $689	Free Cancellation	Rating 7.2 11,271 reviews	Search American Airlines flights
Delta	PriceFrom $755	Free Cancellation	Rating 7.9 8,180 reviews	Search Delta flights
LATAM Airlines	PriceFrom $801	Free Cancellation	Rating 7.5 1,921 reviews	Search LATAM Airlines flights

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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.