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Cheap flights from Santiago to St. Louis from $916

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Santiago to St. Louis departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Santiago to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
8:40 pm - 2:33 pm
SCL
-
STL
18h 53m
1 stop
Delta Logo
9:15 am - 7:15 am
STL
-
SCL
21h 00m
1 stop
$916Delta
Tue, Aug 18 - Mon, Aug 24
American Airlines Logo
8:50 pm - 10:45 am
SCL
-
STL
14h 55m
1 stop
American Airlines Logo
6:07 pm - 7:50 am
STL
-
SCL
11h 43m
1 stop
$925American Airlines
Fri, Sep 4 - Sun, Oct 11
LATAM Airlines Logo
4:15 am - 11:58 pm
SCL
-
STL
20h 43m
2 stops
LATAM Airlines Logo
11:00 am - 11:49 am
STL
-
SCL
22h 49m
3 stops
$927LATAM Airlines
Mon, Aug 31 - Mon, Sep 7
American Airlines Logo
8:50 pm - 6:05 pm
SCL
-
STL
22h 15m
2 stops
American Airlines Logo
11:31 am - 7:50 am
STL
-
SCL
18h 19m
2 stops
$930American Airlines
Fri, Sep 4 - Sun, Oct 11
LATAM Airlines Logo
8:30 am - 11:46 am
SCL
-
STL
28h 16m
3 stops
LATAM Airlines Logo
5:46 pm - 10:15 pm
STL
-
SCL
26h 29m
3 stops
$965LATAM Airlines
Thu, Sep 3 - Thu, Sep 10
Delta Logo
8:40 pm - 2:33 pm
SCL
-
STL
18h 53m
1 stop
Delta Logo
6:00 am - 7:15 am
STL
-
SCL
24h 15m
1 stop
$982Delta
Fri, Aug 7 - Thu, Aug 13
LATAM Airlines Logo
5:10 am - 11:48 pm
SCL
-
STL
20h 38m
2 stops
LATAM Airlines Logo
6:00 am - 6:55 am
STL
-
SCL
22h 55m
2 stops
$991LATAM Airlines
Sat, Oct 24 - Wed, Oct 28
LATAM Airlines Logo
7:50 am - 11:58 pm
SCL
-
STL
17h 08m
2 stops
LATAM Airlines Logo
6:00 am - 5:55 am
STL
-
SCL
22h 55m
2 stops
$997LATAM Airlines
Fri, Aug 7 - Thu, Aug 13
LATAM Airlines Logo
7:50 am - 11:58 pm
SCL
-
STL
17h 08m
2 stops
LATAM Airlines Logo
6:00 am - 1:25 pm
STL
-
SCL
30h 25m
3 stops
$1,001LATAM Airlines
Fri, Aug 7 - Thu, Aug 13
LATAM Airlines Logo
8:40 pm - 10:51 am
SCL
-
STL
16h 11m
1 stop
LATAM Airlines Logo
2:25 pm - 7:40 am
STL
-
SCL
15h 15m
1 stop
$1,013LATAM Airlines
Sat, Oct 24 - Wed, Oct 28

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Delta flights from Santiago to St. Louis

Our best Delta deals on Santiago to St. Louis flight tickets
Delta
Aug 18
SCL8:40 pmSantiago Arturo Merino Benitez
18h 53m
1 stop
STL2:33 pmLambert-St Louis
Aug 24
STL9:15 amLambert-St Louis
21h 00m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$916
Delta
Aug 7
SCL8:40 pmSantiago Arturo Merino Benitez
18h 53m
1 stop
STL2:33 pmLambert-St Louis
Aug 13
STL6:00 amLambert-St Louis
24h 15m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$982
Delta
Aug 14
SCL6:45 pmSantiago Arturo Merino Benitez
22h 32m
2 stops
STL4:17 pmLambert-St Louis
Aug 21
STL9:15 amLambert-St Louis
21h 00m
1 stop
SCL7:15 amSantiago Arturo Merino Benitez
$1,048

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
Aug 31
SCL4:15 amSantiago Arturo Merino Benitez
20h 43m
2 stops
STL11:58 pmLambert-St Louis
Sep 7
STL11:00 amLambert-St Louis
22h 49m
3 stops
SCL11:49 amSantiago Arturo Merino Benitez
$927
LATAM Airlines
Sep 3
SCL8:30 amSantiago Arturo Merino Benitez
28h 16m
3 stops
STL11:46 amLambert-St Louis
Sep 10
STL5:46 pmLambert-St Louis
26h 29m
3 stops
SCL10:15 pmSantiago Arturo Merino Benitez
$965
LATAM Airlines
Oct 24
SCL5:10 amSantiago Arturo Merino Benitez
20h 38m
2 stops
STL11:48 pmLambert-St Louis
Oct 28
STL6:00 amLambert-St Louis
22h 55m
2 stops
SCL6:55 amSantiago Arturo Merino Benitez
$991

momondo Fare Finder

 
Customize your flight search to find flights from Santiago to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 21, 2026.
Use the filters below to find and compare flights from Santiago to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 8/18

8:40 pm-2:33 pm

1 stop18h 53m

Lambert-St Louis

Mon 8/24

9:15 am-7:15 am

1 stop21h 00m

$916
Quickest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 9/4

8:50 pm-10:45 am

1 stop14h 55m

Lambert-St Louis

Sun 10/11

6:07 pm-7:50 am

1 stop11h 43m

$925

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 8/31

4:15 am-11:58 pm

2 stops20h 43m

Lambert-St Louis

Mon 9/7

11:00 am-11:49 am

3 stops22h 49m

$927

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 9/4

8:50 pm-6:05 pm

2 stops22h 15m

Lambert-St Louis

Sun 10/11

11:31 am-7:50 am

2 stops18h 19m

$930

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Thu 9/3

8:30 am-11:46 am

3 stops28h 16m

Lambert-St Louis

Thu 9/10

5:46 pm-10:15 pm

3 stops26h 29m

$965

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 8/7

8:40 pm-2:33 pm

1 stop18h 53m

Lambert-St Louis

Thu 8/13

6:00 am-7:15 am

1 stop24h 15m

$982

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 10/24

5:10 am-11:48 pm

2 stops20h 38m

Lambert-St Louis

Wed 10/28

6:00 am-6:55 am

2 stops22h 55m

$991

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 8/7

7:50 am-11:58 pm

2 stops17h 08m

Lambert-St Louis

Thu 8/13

6:00 am-5:55 am

2 stops22h 55m

$997

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Fri 8/7

7:50 am-11:58 pm

2 stops17h 08m

Lambert-St Louis

Thu 8/13

6:00 am-1:25 pm

3 stops30h 25m

$1,001

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Sat 10/24

8:40 pm-10:51 am

1 stop16h 11m

Lambert-St Louis

Wed 10/28

2:25 pm-7:40 am

1 stop15h 15m

$1,013

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

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

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

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

What is the cheapest month to fly to St. Louis?

In general, September is the cheapest month to fly from Santiago to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of December is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $795.

Can stopping save me money on Santiago to St. Louis flights?

You could potentially save up to 27% on your flight if you consider stops on a Santiago to St. Louis flight.

When to book flights from Santiago to St. Louis

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

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

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

Fastest flight time

18h 53m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 18h 53m
There are no direct flights from Santiago to St. Louis. There are no popular flight routes from Santiago to St. Louis.
Search flight deals

Frequently asked questions about flying from Santiago to St. Louis

  • How far is Santiago Arturo Merino Benitez to Lambert-St Louis by plane?

    Santiago Arturo Merino Benitez and Lambert-St Louis are 5131.6 mi apart from one another. By plane, this route typically takes 18h 53m.

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

    Prices for flights from Santiago Arturo Merino Benitez Airport to Lambert-St Louis Airport are refreshed on a daily basis.

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

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis 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 Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Collinsville
St. Peters
Florissant
Maryland Heights
O'Fallon
Alton
Farmington
Clayton
Wentzville
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Santiago to St. Louis flights to just show those with flexible booking policies.

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

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 St. Louis from Santiago.

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

Yes momondo offers price alerts on flights to St. Louis from Santiago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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