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Cheap flights from Santiago to St. Louis from $655

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santiago to St. Louis departing on 7/9. 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 - 11:53 pm
SCL
-
STL
28h 13m
1 stop
Delta Logo
11:00 am - 5:55 am
STL
-
SCL
17h 55m
2 stops
$866Delta
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
6:45 pm - 12:17 pm
SCL
-
STL
18h 32m
2 stops
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$872LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
8:40 pm - 5:53 pm
SCL
-
STL
22h 13m
1 stop
LATAM Airlines Logo
11:00 am - 5:55 am
STL
-
SCL
17h 55m
2 stops
$873LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
United Airlines Logo
10:45 pm - 10:05 am
SCL
-
STL
14h 20m
1 stop
United Airlines Logo
6:15 am - 8:50 am
STL
-
SCL
23h 35m
1 stop
$875United Airlines
Thu, Nov 19 - Mon, Nov 23
LATAM Airlines Logo
6:45 pm - 12:17 pm
SCL
-
STL
18h 32m
2 stops
LATAM Airlines Logo
11:00 am - 3:00 pm
STL
-
SCL
27h 00m
2 stops
$877LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
12:40 am - 5:53 pm
SCL
-
STL
18h 13m
2 stops
LATAM Airlines Logo
12:52 pm - 1:25 pm
STL
-
SCL
23h 33m
3 stops
$880LATAM Airlines
Tue, Jul 21 - Wed, Sep 2
LATAM Airlines Logo
7:55 pm - 5:53 pm
SCL
-
STL
22h 58m
2 stops
LATAM Airlines Logo
10:51 am - 2:50 pm
STL
-
SCL
26h 59m
2 stops
$896LATAM Airlines
Tue, Jul 14 - Wed, Jul 22
Delta Logo
10:55 pm - 4:44 pm
SCL
-
STL
18h 49m
2 stops
Delta Logo
10:44 am - 5:35 am
STL
-
SCL
17h 51m
2 stops
$932Delta
Mon, Aug 10 - Sun, Aug 16
LATAM Airlines Logo
8:40 pm - 11:53 pm
SCL
-
STL
28h 13m
1 stop
LATAM Airlines Logo
11:00 am - 7:15 am
STL
-
SCL
19h 15m
1 stop
$944LATAM Airlines
Wed, Jul 15 - Wed, Aug 5
LATAM Airlines Logo
8:40 pm - 5:53 pm
SCL
-
STL
22h 13m
1 stop
LATAM Airlines Logo
11:00 am - 7:15 am
STL
-
SCL
19h 15m
1 stop
$980LATAM Airlines
Wed, Jul 15 - Wed, Aug 5

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American Airlines flights from Santiago to St. Louis

Our best American Airlines deals on Santiago to St. Louis flight tickets
American Airlines
Jul 7
SCL9:00 pmSantiago Arturo Merino Benitez
14h 24m
1 stop
STL10:24 amLambert-St Louis
Jul 21
STL5:18 amLambert-St Louis
24h 42m
1 stop
SCL7:00 amSantiago Arturo Merino Benitez
$1,036
American Airlines
Jul 7
SCL9:00 pmSantiago Arturo Merino Benitez
14h 24m
1 stop
STL10:24 amLambert-St Louis
Jul 22
STL5:18 amLambert-St Louis
24h 42m
1 stop
SCL7:00 amSantiago Arturo Merino Benitez
$1,101
American Airlines
Jul 14
SCL9:00 pmSantiago Arturo Merino Benitez
26h 54m
1 stop
STL10:54 pmLambert-St Louis
Jul 22
STL11:15 amLambert-St Louis
18h 45m
2 stops
SCL7:00 amSantiago Arturo Merino Benitez
$1,142

LATAM Airlines flights from Santiago to St. Louis

Our best LATAM Airlines deals on Santiago to St. Louis flight tickets
LATAM Airlines
Jul 15
SCL6:45 pmSantiago Arturo Merino Benitez
18h 32m
2 stops
STL12:17 pmLambert-St Louis
Aug 5
STL11:00 amLambert-St Louis
27h 00m
2 stops
SCL3:00 pmSantiago Arturo Merino Benitez
$872
LATAM Airlines
Jul 7
SCL4:50 pmSantiago Arturo Merino Benitez
20h 27m
2 stops
STL12:17 pmLambert-St Louis
Jul 22
STL10:51 amLambert-St Louis
26h 59m
2 stops
SCL2:50 pmSantiago Arturo Merino Benitez
$873
LATAM Airlines
Jul 15
SCL6:45 pmSantiago Arturo Merino Benitez
18h 32m
2 stops
STL12:17 pmLambert-St Louis
Aug 5
STL11:00 amLambert-St Louis
27h 00m
2 stops
SCL3:00 pmSantiago Arturo Merino Benitez
$877

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 1, 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

Wed 7/15

8:40 pm-11:53 pm

1 stop28h 13m

Lambert-St Louis

Wed 8/5

11:00 am-5:55 am

2 stops17h 55m

$866

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

6:45 pm-12:17 pm

2 stops18h 32m

Lambert-St Louis

Wed 8/5

11:00 am-3:00 pm

2 stops27h 00m

$872

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

8:40 pm-5:53 pm

1 stop22h 13m

Lambert-St Louis

Wed 8/5

11:00 am-5:55 am

2 stops17h 55m

$873

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Thu 11/19

10:45 pm-10:05 am

1 stop14h 20m

Lambert-St Louis

Mon 11/23

6:15 am-8:50 am

1 stop23h 35m

$875

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

6:45 pm-12:17 pm

2 stops18h 32m

Lambert-St Louis

Wed 8/5

11:00 am-3:00 pm

2 stops27h 00m

$877

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/21

12:40 am-5:53 pm

2 stops18h 13m

Lambert-St Louis

Wed 9/2

12:52 pm-1:25 pm

3 stops23h 33m

$880

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Tue 7/14

7:55 pm-5:53 pm

2 stops22h 58m

Lambert-St Louis

Wed 7/22

10:51 am-2:50 pm

2 stops26h 59m

$896
Quickest round-trip

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Mon 8/10

10:55 pm-4:44 pm

2 stops18h 49m

Lambert-St Louis

Sun 8/16

10:44 am-5:35 am

2 stops17h 51m

$932

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

8:40 pm-11:53 pm

1 stop28h 13m

Lambert-St Louis

Wed 8/5

11:00 am-7:15 am

1 stop19h 15m

$944

SantiagoSt. Louis

SCL - STL

SCLSTL

Santiago Arturo Merino Benitez

Wed 7/15

8:40 pm-5:53 pm

1 stop22h 13m

Lambert-St Louis

Wed 8/5

11:00 am-7:15 am

1 stop19h 15m

$980

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 cheapest month to fly to St. Louis?

In general, December 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 $795. The month of November is another great option to travel to St. Louis, with average flight prices from Santiago averaging around $913.

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

You could potentially save up to 32% 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

14h 20m

Direct flights

None
The fastest flight from Santiago to St. Louis takes 14h 20m
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 14h 20m.

  • 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
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Fenton
Farmington
Wentzville
Clayton
Festus
Eureka
Litchfield
Edwardsville
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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